JPH0510072U - Automotive seat structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a vehicle seat structure that prevents rattling in the front-rear direction and in the rotation direction when locked. [Structure] A taper portion 22 is provided on an inner portion of the upper frame 4.
Lock pin insertion portions 22 and 23 having a and 23a are provided at least at two positions on both sides, and the lock pin 16 is urged outward by the lower frame 2 by a spring force and inserted into the lock pin insertion portions 22 and 23. 17 is provided, and when the seat portion 25 comes to a predetermined fixed position, the lock pins 16, 1 are provided on the lock pin insertion portions 22, 23 of the flange portion 8 on both sides.
7 is inserted, the lock pins 16 and 17 are tapered portions 22a,
By contacting 23a, a gap is eliminated, and rattling in the front-rear direction and the rotation direction at the time of locking is prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary type automobile seat structure.

[0002]

[Prior Art]

 As a conventional vehicle seat structure of this type, as shown in FIGS. 6 to 8, an upper frame 43 for mounting a seat portion 42 is rotatably provided on a lower frame 41 fixed to a vehicle body floor 40. In some cases, a holder 44 is fixed to the center side of the lower frame 41, and the inner portion of the upper frame 43 is rotatably held by the lower frame 41 and the holder 44.

This automobile seat structure is provided with a lock mechanism 45. The lock mechanism 45 is provided with a lock piece 48 via a hinge 47 on a bracket 46 attached to the upper frame 43, and the lock piece 48 is attached to the lock piece 48. This is engaged with the lock tooth portion 49 formed on the upper frame 43.

[0004]

[Problems to be solved by the device]

 However, in the conventional example, since the lock mechanism 45 is only on one side, the gap t between the inner peripheral edge portion 43a of the upper frame 43 and the end portion 41a of the lower frame 41 is the front-back direction of the seat structure. Also, there was a problem that there was rattling in the rotation direction.

The present invention solves the above problems, and an object of the present invention is to provide a vehicle seat structure that prevents rattling in the front-rear direction and the rotation direction at the time of locking. is there.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an upper frame rotatably on a lower frame fixed to a vehicle body floor, and a holder is fixed to the center side of the lower frame to fix the inner portion of the upper frame. In a vehicle seat structure in which the lower frame and holder are rotatably held, lock pin insertion parts with tapered parts are provided at least at two locations on both sides of the inner part of the upper frame, and spring force is applied to the lower frame. A lock pin is provided which is urged by an external force to be inserted into the lock bin insertion portion.

[0007]

[Action]

 With this configuration, when the seat portion comes to the predetermined fixed position, the lock pins are located in the lock pin insertion portions on both sides of the upper frame, and the lock pins are inserted into the lock pin insertion portion by the biasing force of the spring. Since the lock pin contacts the taper part, there is no gap, and rattling in the front-rear direction and the rotation direction at the time of locking is prevented.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a sectional view of a vehicle seat structure according to the present invention, FIG. 2 (1) is a perspective view with the same parts omitted, and FIG. 2 (2) is an exploded perspective view thereof.

The vehicle seat structure according to the present invention includes a lower frame 2 fixed to a vehicle body floor 1, and an upper frame 4 is rotatably provided on an upper portion of the lower frame 2. Further, a holder 5 is fixed to the center side of the lower frame 2 with a fixing bolt 6, and the upper frame 4 can rotate while its inner portion is narrowed between the lower frame 2 and the holder 5. Is.

That is, a hole 3 which is long in the front-rear direction is formed in the center of the lower frame 2, and a flat circular recess 7 is formed in the center of the upper frame 4. A hole 8 is formed in the center of the recessed portion 7, and the peripheral portion of the hole 8 is a flange 8a. Further, the holder 5 is formed by forming a rectangular recess 10 in the center of a holder body 9 having a substantially rectangular shape in plan view. The upper frame 4 is formed by contacting the upper frame of the lower frame 2 with the flange 8a. Then, the recess 10 is inserted into the hole 8 and the recess 10 is fixed with the fixing bolt 6, so that the flange 8 is held between the upper surface of the lower frame 2 and the holder 5.

A lock mechanism 11 is provided on the lower frame 2. The lock mechanism 11 is provided with left and right levers 12 and 13, and the left lever 12 is rotatably attached by a fulcrum pin 14 to the surface of the lower frame 2 on the left side of the hole 3. The front side of the lever 12 extends in the front direction of the vehicle body. The right lever 13 is rotatably attached to the surface of the lower frame 2 by the fulcrum pin 15 while being positioned in the hole 3 on the right side, and the front end of the lever 13 extends rearward of the vehicle body. ing. Lock pins 16 and 17 are attached to the tip portions of the left and right levers 12 and 13, and these lock pins 16 and 17 penetrate through pin holes 18 and 19 formed in the surface portion of the lower frame 2. The pin holes 18 and 19 are long holes that are long in the left-right direction. The left and right levers 12 and 13 are connected to each other by connecting wires 20 and 21 before and after the fulcrum, and the levers 12 and 13 are urged clockwise by springs 29 and 30 in FIG. Has been done. The lock pins 16 and 17 are exposed between the linear portion 5a of the holder 5 and the flange portion 8a of the upper frame 4 and are in contact with the peripheral edge portion 8b of the flange portion 8a. Lock pin insertion portions 22 and 23 are formed on the flange portion 8a by shifting the phase by 180 degrees to the left and right, and these lock pin insertion portions 22 and 23 are V-shaped in a plane and are tapered portions 22a, 23a.

A seat portion 25 is attached to the upper frame 4 via a seat slide mechanism 24. The seat slide mechanism 24 includes a rail 26 and a slider 27 that slides on the rail 26. The rail 26 is fixed to the upper frame 4, and a seat frame 28 is attached to the slider 27.

Next, the operation will be described. When the lock pins 16 and 17 are exposed between the straight portion 5a of the holder 5 and the flange portion 8a of the upper frame 4 and are in contact with the peripheral portion 8b of the flange portion 8a, the upper frame 4 The seat slide mechanism 24 and the seat portion 25 in the upper part of the upper part can be rotated. Then, the lock pins 16 and 17 are inserted into the lock pin insertion portions 22 and 23 by the urging force of the springs 29 and 30. Since the lock pin insertion portions 22 and 23 are V-shaped in a plane and provided with the taper portions 22a and 23a, the lock pins 16 and 17 are in contact with the taper portions 22a and 23a so that the clearance is eliminated and the front and rear of the lock state There is no rattling in the direction of rotation or in the direction of rotation. Also, rattling in the vertical direction is prevented by pressing the holder 5.

The lock is released by rotating the one lever 12 against the spring 29 to remove the lock pin 16 from the lock pin insertion portion 22. The rotation of the one (left) lever 12 causes the other (right) lever 13 to rotate against the spring 30 via the connecting wires 20 and 21, and the lock pin 17 is removed from the lock pin insertion portion 23.

According to the above-described embodiment, when the seat portion 25 comes to the predetermined fixed position, the lock pins 16 and 17 are located on the lock pin insertion portions 22 and 23 of the flange portion 8a on both sides, The lock pins 16 and 17 are inserted into the lock pin insertion portions 22 and 23 by the urging force of the springs 29 and 30, and the lock pins 16 and 17 come into contact with the tapered portions 22a and 23a so that there is no gap therebetween. Rattling in the direction of rotation and in the direction of rotation is prevented.

[0016]

[Effect of the device]

 As described above, according to the present invention, the inner portion of the upper frame is provided with the lock pin insertion portions having the tapered portions at at least two positions on both sides, and the lower frame is urged by the external force by the spring force. Since the lock pin that is inserted into the lock bin insertion part is provided, when the seat part comes to the predetermined fixed position, the lock pin is located in the lock pin insertion part of the flange part on both sides, and this lock pin is attached with a spring. The lock pin is inserted into the lock pin insertion part by the force, and the lock pin comes into contact with the taper part to eliminate the gap, preventing rattling in the front-rear direction and the rotation direction at the time of locking.

[Brief description of drawings]

FIG. 1 is a sectional view of a vehicle seat structure according to the present invention.

FIG. 2 (1) is an exploded perspective view in which the same part is omitted. (2) is an exploded perspective view of the same.

FIG. 3 is a sectional view taken along the line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is a cross-sectional view taken along the line CC of FIG.

FIG. 6 is a sectional view of a conventional automobile seat structure.

FIG. 7 is a perspective view of a conventional automobile seat structure with some parts omitted.

FIG. 8 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 2 Lower frame 4 Upper frame 5 Holder 16 Lock pin 17 Lock pin 22 Lock pin insertion part 23 Lock pin insertion part

Claims (1)

[Claims for utility model registration] [Claim 1] An upper frame is rotatably provided on a lower frame fixed to a vehicle body floor, a holder is fixed to the center side of the lower frame, and an inner portion of the upper frame is fixed. In a vehicle seat structure that is rotatably held by a lower frame and a holder, lock pin insertion portions having tapered portions are provided at least at two positions on both sides inside the upper frame, and an external force is applied to the lower frame by a spring force. A seat structure for an automobile, comprising a lock pin that is biased by the lock pin to be inserted into a lock bin insertion portion.