JPH0639560U - Revolving vehicle seat - Google Patents

Abstract

(57) [Summary] [Purpose] A simple type with the minimum number of parts required, excellent in terms of assembly and cost, easy rotation adjustment, no rattling, and peel strength at the top and bottom. Obtain a sufficient rotation adjustment mechanism. [Structure] The rotation adjusting mechanism 10 includes a lower base 11 having a cylindrical opening 12 having a plurality of engagement holes 13 and an upper base 14 having a cylindrical opening 15 having a plurality of engagement holes 16. A pair of corrugated leaf springs 2 arranged with one end locked inside the cylindrical openings of both bases.
1 and 22. The other ends of these wavy leaf springs are connected to each other to provide an operation knob 23 that can be inserted and removed from the outside. Each of the wavy leaf springs has wavy portions 25 and 26 that can be engaged with a plurality of engagement holes in the peripheral wall portions of both cylindrical openings, and is disengaged by the operation knob.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary vehicle seat in which a seat body is supported on the floor surface of a vehicle compartment so as to be rotationally adjustable, and more particularly to an improvement of a rotation adjusting mechanism in the vehicle seat.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as a vehicle seat, there has been known a rotary seat that employs a configuration in which the orientation of the seat can be changed and adjusted according to the preference and demand of a seated person. That is, this type of rotating vehicle seat has a structure in which a rotation adjusting mechanism such as a surface rubbing type or a shaft up rotating type is provided below the seat body on the floor surface of the passenger compartment. Various things have been conventionally proposed.

For example, in Japanese Utility Model Laid-Open No. 32424/1990, a ring-shaped flange provided on one side with a lower base placed on the floor and an upper frame supporting the sheet body is fitted with the flange. The ring-shaped groove provided on the other side rotatably combines the two to form a rotation support unit, and these two are placed relative to the outer side portion between the lower base and the upper frame. There is disclosed a rotary seat having a structure in which a drive mechanism section is attached by means of screw adjusting means that can be rotationally adjusted.

Then, by operating the above-mentioned drive mechanism section from the outside, the upper frame is relatively rotated with respect to the lower base, whereby the orientation of the seat body supported on the upper frame is changed. It was something to adjust.

[0005]

[Problems to be solved by the device]

 However, the above-described conventional rotary seat for a vehicle has many drawbacks such as a large number of components constituting the rotation support unit and the drive mechanism, a complicated structure, and a heavy weight.

Furthermore, in the above-mentioned conventional structure, the upper frame is rotationally adjusted on the lower base and locked at that position by the drive mechanism section by the screw adjusting means, but the lower base and the upper frame are rotated. Rotation adjustment is performed with a force from a position away from the center, but there is a problem that rotation is heavy, large operation force is required, adjustment work is complicated, and rattling easily occurs in the locked state. .

[0007] Further, the peeling strength is weak at the portion of the lower base that rotatably supports the upper frame, and in order to reinforce the peeling strength, a reinforcing plate that rotatably connects both members is used. There is also a problem that it is necessary to attach various connecting means such as that, and it is desirable to take some measures that can eliminate these problems.

Furthermore, in constructing the above-described rotary type vehicle seat, it is necessary to stack a seat main body on the upper or lower portion of the above-described rotation adjusting mechanism and to interpose a seat slide mechanism for moving back and forth. Therefore, this rotation adjusting mechanism needs to have a structure as simple as possible and to be downsized and compact, and such a point must be taken into consideration.

The present invention has been made in view of such circumstances, and the rotation adjusting mechanism is configured by a simple structure in which the number of parts is reduced as much as possible, which is excellent in assemblability and also in rotation adjusting operation. The objective is to obtain a rotary vehicle seat that can be easily and without rattling, has sufficient peel strength at the upper and lower parts, and is inexpensive in cost.

[0010]

[Means for Solving the Problems]

 In order to meet such a demand, the rotary vehicle seat according to the present invention is provided with a rotation adjusting mechanism for supporting the seat body on the floor surface of the vehicle compartment so that the seat body can be rotationally adjusted. And a lower base having a cylindrical opening formed therein, and a cylindrical opening laminated on the cylindrical base and rotatably fitted in the cylindrical opening on the lower base side and having a plurality of engaging holes formed in the peripheral wall. An upper base, a pair of corrugated leaf springs disposed along the peripheral wall portions of the cylindrical opening portions with one end locked to the inner peripheral wall portions of the cylindrical opening portions, and the corrugated plate springs. A plurality of engaging members each having a wavy portion of each wavy leaf spring formed on the peripheral wall portions of both cylindrical opening portions, and a locking member formed of an operation knob to which the other end of the spring is connected and which can be inserted and removed from the outside. Formed to engage the dowel hole and Of those that has released configured to be capable of engaging state.

[0011]

[Action]

 According to the present invention, a pair of corrugated leaf springs constituting the locking member are displaced to the inner side of the cylindrical opening by inserting / removing the operation knob, so that the corrugated portion of each corrugated leaf spring is moved to the lower base and the upper base. The lock can be released by disengaging it from the engagement hole in the peripheral wall of the cylindrical opening of the seat, thereby rotating and displacing both bases in any direction relative to each other, and the orientation of the seat body can be rotationally adjusted. By stopping the operation to, the corrugated portions can be locked by the elastic force of the leaf spring to engage with the engaging holes of the cylindrical wall portions of the cylindrical openings of the lower base and the upper base.

[0012]

【Example】

 1 to 4 show an embodiment of a rotary vehicle seat according to the present invention. In these drawings, first, a schematic structure of a vehicle seat generally designated by reference numeral 1 will be briefly described with reference to FIG. The seat 1 includes a seat cushion 2 and a seat back 3 provided upright on the rear end side. A head rest 4 is provided on the upper end of the seat back 3, and a reclining mechanism (not shown) for supporting the seat back 3 with respect to the seat cushion 2 so as to be tiltable is provided.

Then, in such a seat 1, between the seat cushion 2 and the floor surface of the vehicle compartment, the whole seat 1 is rotated about the center of the seat as shown by an arrow in FIG. There is provided a rotation adjusting mechanism 10 which is adjustable and can set and adjust the orientation of the seat as desired.

With the rotary vehicle seat according to the present invention, the rotation adjusting mechanism 10 described above is formed with a plurality of rectangular engaging holes 13 in the peripheral wall portion 12a, as is apparent from FIGS. A lower base 11 having a cylindrical opening 12 formed therein, and a lower base 11 laminated on the lower base 11 and rotatably fitted in the cylindrical opening 12 on the side of the lower base 11 and having a plurality of rectangular engaging holes 16 formed in the peripheral wall portion. An upper base 14 having a cylindrical opening 15 formed in 15a, and one end 21a, 22a in each of the cylindrical openings 12, 15 is locked to the inner cylindrical peripheral wall 12a, 15a. In this state, the pair of corrugated leaf springs 21 and 22 arranged along the peripheral wall portions 12a and 15a and the other end portions 21b and 22b of these corrugated leaf springs 21 and 22 are fixed or connected by pivoting or the like to the outside. Insert / extract operation The locking member 20 is composed of a possible operation knob 23.

Further, in such a configuration, a plurality of rectangular shapes in which the corrugated portions 25 and 26 of the corrugated leaf springs 21 and 22 of the locking member 20 are formed in the peripheral wall portions 12a and 15a of both the cylindrical openings 12 and 15, respectively. It is characterized in that it is formed so as to be engaged with the engagement holes 13 and 16 and that this engagement state can be released by inserting and removing the operation knob 23.

Here, the above-mentioned corrugated leaf springs 21 and 22 have corrugated portions 25 and 26 formed by corrugating a flat plate spring material. Such corrugated leaf springs 21 and 22 are springs. And a function as a lock member. The corrugated leaf springs 21 and 22 are normally provided with a biasing force that causes the corrugated portions 25 and 26 to engage with the square engagement holes 13 and 16, respectively. Further, reference numeral 15b in the drawing denotes a caulking portion in which the lower end of the peripheral wall portion 15a of the cylindrical opening portion 15 is curved after the both cylindrical opening portions 12 and 15 have been fitted together.

According to the above-described configuration, the pair of corrugated leaf springs 21 and 22 forming the locking member 20 is displaced inside the cylindrical openings 12 and 15 by inserting and removing the operation knob 23. The corrugated portions 25 and 26 of the corrugated leaf springs 21 and 22 are released from the engaging holes 13 and 16 of the cylindrical wall portions 12a and 15a of the cylindrical openings of the lower base 11 and the upper base 14 to unlock them. The orientation of the seat body can be rotationally adjusted by relatively rotatively displacing the bases 11 and 14 in arbitrary directions.

Further, by stopping the operation of the operation knob 23, the wavy portions 25 and 26 are moved to the lower base 11 by the elastic force of the wavy leaf springs 21 and 22, as is apparent from FIGS. 2 and 3. The upper base 14 can be locked by being engaged with the engaging holes 13 and 16 of the cylindrical opening peripheral wall portions 12a and 15a.

Particularly, in this state, the corrugated portions 25 and 26 are securely engaged with the square engagement holes 13 and 16 of the cylindrical opening peripheral wall portions 12 a and 15 a of both bases 11 and 14, respectively, There is no rattling problem like the above, and a reliable locked state can be obtained. Further, in such a state, the bases 11 and 14 are held so as not to separate in the vertical direction by the engagement of the corrugated portions 25 and 26 described above, and sufficient and reliable peeling strength can be secured.

Further, according to the rotation adjusting mechanism 10 as described above, the rotation adjusting mechanism 10 has a simple structure in which the number of parts is reduced as much as possible, the assembling property is excellent, and the rotation adjusting operation is easy and rattling. In addition, the peeling strength between the upper and lower bases can be sufficiently secured by the wedge-shaped cross section of the locking ring member, and the cost is low.

It should be noted that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part of the seat 1 can be appropriately modified and changed as necessary, and various modifications can be considered. Let's. For example, if an appropriate lock mechanism that can regulate the movement of the operation knob 23 described above is attached, the lock mechanism can be prevented from coming out and a reliable locked state can be maintained. Further, in the above-described embodiment, the lock is released by pulling out the operation knob 23, but it goes without saying that the present invention is not limited to this.

Further, according to the rotary type vehicle seat 1 of the present invention, between the lower base 11 and the passenger compartment floor constituting the rotation adjusting mechanism 10 described above, or between the upper base 14 and the seat body. It goes without saying that a slide mechanism capable of sliding the seat in the front-rear direction may be interposed therebetween.

[0023]

[Effect of device]

 As described above, according to the rotary vehicle seat according to the present invention, the rotation adjusting mechanism for supporting the seat body on the floor surface of the vehicle compartment so as to be adjustable in rotation is provided with a plurality of engaging holes formed in the peripheral wall portion of the cylinder. A lower base having a circular opening, and a cylindrical opening laminated on the lower base and rotatably fitted into the cylindrical opening on the lower base side and having a plurality of engaging holes formed in the peripheral wall. An upper base, a pair of corrugated leaf springs arranged along the peripheral wall portions with one end locked in the inner peripheral wall portions of the cylindrical opening portions, and these corrugated leaf springs. A plurality of engaging holes formed with the corrugated portions of the corrugated leaf springs on the peripheral wall portions of the two cylindrical openings. To be engaged with the Having releasably constituting the engaged state, despite the simple structure, provides the practical various excellent effects as follows.

That is, a pair of corrugated leaf springs forming the locking member are displaced to the inside of the cylindrical opening by the insertion / removal operation of the operation knob, and the corrugated portions of each corrugated leaf spring are moved to the cylindrical opening peripheral wall of both bases. The lock is released by disengaging it from the engaging hole of the section, whereby both bases can be relatively rotationally displaced in arbitrary directions to rotationally adjust the direction of the seat body, and the operation to the operation knob is stopped. As a result, the wavy portions can be locked by the elastic force of the leaf spring to engage with the engaging holes of the cylindrical opening peripheral wall portions of both bases.

Further, the rotation adjusting mechanism capable of obtaining the above-mentioned function is constituted by a simple structure in which the number of parts is reduced as much as possible, and the assembling property is excellent, and the rotation adjusting operation is easy. It can be performed without sticking, and the peeling strength between the upper and lower bases can be sufficiently secured by the locking function of the corrugated leaf spring that also functions as a spring, and the cost can be reduced. In particular, according to the present invention, the rotating function, the locking function, and the strength function can be constituted by three parts, that is, the upper base, the lower base, and the locking member by the corrugated leaf spring, which has a great advantage.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view of a rotation adjusting mechanism, which is an essential part of an embodiment of a rotary vehicle seat according to the present invention.

FIG. 2 is a sectional view of an essential part showing a locked state in the rotation adjusting mechanism that characterizes the present invention.

FIG. 3 is a schematic perspective view showing an assembled state of a rotation adjusting mechanism characterizing the present invention.

FIG. 4 is a schematic perspective view of a rotary vehicle seat according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat cushion 3 Seat back 10 Rotation adjustment mechanism 11 Lower base 12 Cylindrical opening 12a Circumferential wall 13 Square engaging hole 14 Upper base 15 Cylindrical opening 15a Circular wall 16 Square engaging hole 20 Locking member 21 Wavy Leaf Springs 22 Wavy Leaf Springs 22 Operation Knob 25 Wavy Area 26 Wavy Area

Claims (1)

[Scope of utility model registration request] 1. A rotary vehicle seat having a rotation adjusting mechanism for supporting a seat body on a floor surface of a vehicle compartment so as to be rotationally adjustable, wherein the rotation adjusting mechanism has a plurality of engagement holes formed in a peripheral wall portion. A lower base having a cylindrical opening and a lower base laminated on the lower base and rotatably fitted to the cylindrical opening on the lower base side, and having a plurality of engaging holes formed in the peripheral wall. An upper base having a cylindrical opening, and a pair arranged along the peripheral wall in a state where one end is locked inside the cylindrical wall of one of the cylindrical openings of both bases. A wavy leaf spring and a locking member that is connected to the other end of the wavy leaf spring and has an operating knob that can be inserted / extracted from the outside. Multiple engagements formed on the peripheral wall of the opening To be formed to be engaged and rotating vehicle seat, characterized in that it is releasably configure this engagement by said operation knob.