JPH066078U - Structure of turning sheet - Google Patents

Abstract

(57) [Abstract] [Purpose] A turning sheet capable of turning in the forward and backward directions has a small number of parts and is capable of easily rotating the sheet 180 degrees by a small turning device. A rotating mechanism 4 for rotating a movable plate 2 by a motor M mounted on the fixed plate 1 is provided between a movable plate 2 on the seat side and a fixed plate 1 on the vehicle floor side. The protrusion 5 for preventing rattling of the movable plate 2 is formed on the opposing surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a turning seat in a vehicle seat that can change (turn) the direction to the front or rear.

[0002]

[Prior art]

 This type of turning sheet has an annular guide ring fixed to a fixed plate fixed to the vehicle floor as disclosed in Japanese Patent Laid-Open No. 59-14526, and the guide ring is fixed to the bottom of the seat. By fitting the peripheral edge of the tubular leg integrally provided on the fixed movable plate and arranging balls, rollers, etc. between the guide ring and the peripheral edge of the leg, the seat can be moved horizontally. The structure is such that the movable plate is rotatably supported, and the movable plate is locked by a lock mechanism provided between the movable plate and the fixed plate.

In the turning sheet, since the movable plate is locked and unlocked by the lock mechanism, the number of parts is large and the turning operation is troublesome.

[0006] Therefore, there has been proposed a turning device capable of turning the seat forward and backward by a motor. However, since such a turning device turns the seat using a lead screw and a nut, In order to rotate the sheet 180 degrees, the lead screw and the like become large, and the turning device also becomes large.

The present invention aims to easily rotate a seat by 180 degrees by using a small turning device having a small number of parts.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the structure of the turning seat according to the present invention is such that a rotating mechanism for rotating a movable plate on the seat side by a motor mounted on a fixed plate on the vehicle floor is provided between the fixed plate and the movable plate. A protrusion for preventing rattling of the movable plate is formed on the facing surface of the movable plate and the fixed plate.

[0007]

[Action]

 The motor activates the rotation mechanism, which rotates the movable plate and turns the direction of the sheet. Since the movable plate is provided with a protrusion for preventing rattling of the movable plate on the opposing surface of the movable plate and the fixed plate, it is rotated by the rotating mechanism without rattling.

[0008]

【Example】

 An embodiment according to the present invention will be described with reference to FIGS. FIG. 1 shows a turning seat (second seat for a wagon type automobile) according to the present invention, where 1 is a fixed plate for fixing to the vehicle floor, and 2 is a fixed plate which is attached to the fixed plate 1 so as to rotate forward and backward by 180 degrees. The seat cushion SC is fixedly attached to the upper part of the movable plate 2. Numerals 3, 3, 3, and 3 are fixed legs provided to the front, rear, left, and right of the fixed plate 1, and these legs 3, 3, ... Are fixed to the vehicle floor.

A rotating mechanism 4 is provided between the movable plate 2 and the fixed plate 1, and the motor M mounted on the fixed plate 1 rotates the movable plate 2 forward and backward by 180 degrees. It has a structure that

The rotation mechanism 4 includes a base plate 41 fixed to the fixed plate 1, a rotating plate 42 fixed to the movable plate 2, and a conventionally known gear train provided in the base plate 41 and the rotating plate 42. When the shaft 43 of the gear train is rotated by the motor M, the gear train is rotated and the rotating plate 42 is rotated by 180 degrees.

The rotating mechanism 4 is located substantially in the center between the movable plate 2 and the fixed plate 1, the base plate 41 is located in the recess 11 of the fixed plate 1, and the bolts 44, 44 of the base plate 41 are the nuts 45, The rotary plate 42 is fixedly attached to the plate 1 by 45, the rotary plate 42 is located in the convex portion 21 of the movable plate 2, and the bolts 46 and 46 of the rotary plate 42 are fixed to the movable plate 2 by the nuts 47 and 47. It is installed.

The motor M is attached below the fixed plate 1 and is connected to the shaft 43 of the rotating mechanism 4. When the motor M is operated, the shaft 43 is rotated, whereby the gear train and the rotating plate 42 are rotated, and the movable plate 2 is rotated in the front and rear directions to turn the direction of the seat.

The movable plate 2 and the fixed plate 1 are provided with a plurality of protrusions 5 for preventing rattling of the movable plate 2 on opposing surfaces around the rotation mechanism 4.

The backlash preventing protrusions 5 are formed on the movable plate 2 and the fixed plate, respectively. The protrusions 51 formed on the movable plate 2 protrude toward the fixed plate 1 and are formed on the fixed plate 1. The protrusion 52 projects toward the movable plate 2 and prevents the movable plate 2 from rattling and smoothes the rotation of the movable plate 2 when the movable plate 2 rotates.

The protrusion 51 of the movable plate 2 and the protrusion 52 of the fixed plate 1 are arranged so that the protrusion 51 of the movable plate 2 does not collide with each other when the movable plate 2 rotates. It is provided outside the protrusion 52 of the fixed plate 1 around the rotation mechanism 4.

In the turning sheet having the above structure, when the motor M operates, the shaft 43 rotates, the gear row rotates, and the rotating plate 41 rotates. When the rotary plate 41 rotates, the movable plate 2 rotates. When the operation of the motor M is stopped when the seat rotates 180 degrees in the front and rear directions, the rotation mechanism 4 is locked and the seat does not rotate.

[0017]

[Effect of device]

 According to the present invention, between the movable plate on the seat side and the fixed plate on the vehicle floor side, the rotating mechanism for rotating the movable plate by the motor mounted on the fixed plate is provided. Since the seat is locked, there is no need to install a lock mechanism as in the past, the number of parts is reduced, and the small rotating mechanism rotates the movable plate, so the space between the movable plate and the fixed plate is narrow. A rotating mechanism can be provided in the space, and the narrow space can be effectively utilized.

Since the movable plate and the fixed plate are provided with the protrusions for preventing the movable plate from rattling on the surfaces facing each other, the movable plate does not rattle and the movable plate When the is rotated, the protrusion for preventing backlash slides on the movable plate and the fixed plate, so that the movable plate can be smoothly rotated.

[Brief description of drawings]

FIG. 1 is a perspective view of a turning sheet of the present structure.

FIG. 2 is a perspective view of a movable and fixed plate of the seat shown in FIG.

3 is a partial cross-sectional view taken along the line III-III in FIG.

[Explanation of symbols]

 1 Fixed plate 2 Movable plate 4 Rotation mechanism 5 Projection for preventing backlash

Claims (1)

[Scope of utility model registration request] 1. A rotating mechanism for rotating the movable plate by a motor mounted on the fixed plate is provided between the movable plate on the seat side and the fixed plate on the vehicle floor side, and the movable surface is opposed to the movable plate and the fixed plate. A structure for a turning sheet, characterized in that a protrusion for preventing rattling of the plate is formed.