JPH04119726U - rotating vehicle seat - Google Patents

Abstract

(57) [Summary] [Objective] To provide a rotary vehicle seat S that can increase the amount of deflection of the front end of the seat cushion SC toward the outside of the vehicle cabin so that getting on and off the seat is easy. [Configuration] Lower rails 11, 21 fixed to the vehicle floor F
A pair of inner and outer seat tracks 10, 20 consisting of upper rails 12, 22 which are assembled to the same rails 11, 21 so as to be slidable in the front and rear direction, and an arc-shaped inner guide rail 3 fixed to the upper rail 12 of the inner seat track 10.
2. An arcuate outer guide rail 34 having a radius of curvature smaller than that of the rail 32 and the same center of curvature and fixed to the upper rail 22 of the outer seat track 20, both guide rails 32, 34 via guide members 36, 37. A seat cushion SC rotatably assembled to the seat cushion SC, and seat cushion locking means 31c, 42, 47, and 48 for releasably locking the rotation of the cushion SC are provided.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a rotating vehicle seat.

0002

[Conventional technology]

As a type of vehicle seat, for example, the publication ``New Automobile Engineering Handbook (Incorporated Association) (Published by Society of Automotive Engineers of Japan), Volume 6, Page 26, there are two guide rails with the same radius. are line-symmetrically arranged so that their centers of curvature coincide with each other, and seat marks are placed on both guide rails. A rotating vehicle seat is disclosed in which a seat is rotatably assembled.

0003

[Problem that the idea aims to solve]

By the way, when the seat cushion is rotated, the front edge of the seat cushion The larger the deviation toward the outdoor side, the easier the getting on and off operation becomes. However, in the above-mentioned conventional rotary vehicle seat, two guide wheels with the same radius Since the seat cushion is assembled to the idle rail, the center of rotation, that is, the guide rail, The center of curvature of the roll is located approximately at the center of the seat cushion. For this reason, the It is not possible to increase the amount of deflection of the front end of the cushion toward the outside of the cabin. In view of this problem, the present invention has been developed to prevent the seat cushion from rotating when the seat cushion is rotated. Rotation that increases the amount of deflection of the front end toward the outdoor side, making it easier to get on and off. The purpose of the company is to provide seats for type vehicles.

0004

[Means to solve the problem]

The rotary vehicle seat according to the present invention has the same level as the lower rail fixed to the vehicle floor. A pair of inner and outer seat rails consisting of an upper rail that is attached to the rail so that it can slide in the front and rear directions. rack, arc-shaped inner fixed to the upper rail of the inner seat track The guide rail has a smaller radius of curvature and the same center of curvature than the said outer rail. An arc-shaped outer guide rail fixed to the upper rail of the seat track, as described above. The system is rotatably assembled to each guide rail via a guide member that fits into the guide rail. seat cushion, and a seat cushion that releasably locks the rotation of the same cushion. It is characterized by being equipped with a locking means.

[0005]

[Actions and effects of the idea]

According to the above configuration, the upper rail slides in the front and back direction relative to the lower rail. This allows you to adjust the front and back position of the entire seat, and also allows you to lock the seat cushion. By releasing the lock from the steps, the seat cushion can be moved along both guide rails. It can be rotated. However, according to the present invention, two curves with different radii of curvature The seat cushion is rotatably supported by the guide rail, so the seat cushion The center of rotation of the cushion, that is, the center of curvature of both guide rails, is from the center of the cushion. It can be set in a position that is biased toward the rear and outside. Therefore, when rotating the seat cushion, The amount of deflection of the front end of the cushion toward the outside of the cabin can be increased, making it easier to get in and out of the vehicle. It becomes extremely easy to create.

[0006]

【Example】

The present invention will be explained below based on the drawings. Figures 1 to 3 show one implementation of the present invention. An example rotatable vehicle seat S is shown. The sheet S has a pair of inner and outer seats. Equipped with truck 10, 20, seat cushion SC and seat back SB. Ru.

[0007] Each seat track 10, 20 has a lower rail 11, 21 fixed to the vehicle body floor F. and upper rails 12 and 2 that are attached to the same rails 11 and 21 so as to be slidable in the front and back direction. 2. Further, although not shown, the sheet tracks 10 and 20 are, for example, It is equipped with a locking mechanism for the seat track as described in the item. to releasably lock the upper rails 12, 22 to the lower rails 11, 21. can do.

[0008] An inner base plate is provided on the upper surface of the upper rail 12 of the inner seat track 10. The seat 31 is fixed. This inner base plate 31 has a circular arc end 31 a, and an arcuate inner guide rail 32 is welded along the same end 31a. , the guide has a U-shaped cross section with the same rail 32 and inner base plate 31. A groove 31b is defined.

[0009] On the other hand, the upper rail 21 of the outer seat track 20 has an outer base plate. The seat 33 is fixed. This outer base plate 33 has a circular arc end 33 a, and an arcuate outer guide rail 34 is welded along the same end 33a. , a guide groove 33b having a U-shaped cross section is formed. As shown in FIG. 4, the radius of curvature R1 of the outer guide rail 34 is The radius of curvature R2 is set smaller than the radius of curvature R2 of the drail 32. Also, both guide rails The centers of curvature O of the curves 32 and 34 coincide with each other, and are located at the center of the seat cushion SC. It is set in a position that is biased toward the rear and outside.

0010 The seat cushion frame 35 that constitutes the seat cushion SC has a sheet metal structure. On the back side of the bottom, there are two guide plates 36 that fit into the guide groove 31b and a guide. A guide plate 37 that fits into the groove 33b is fixed. Each guide The plates 36, 37 have tongues 36a, 37a, respectively, and each tongue 36a, 37a has a tongue 36a, 37a. A slide piece 38 made of resin is fitted into the. Seat cushion frame 3 Reference numeral 5 denotes guide plates 36 and 37 that are slidably fitted into the respective guide grooves 31b and 33b. It is rotatably assembled to both upper rails 12, 22 via.

[0011] Next, on the back side of the seat cushion frame 35, there is a hinge plate for the lock plate. A racket 39 is fixed. This hinge bracket 39 has a hinge pin 40. is assembled and prevented from coming off with a washer 41, and a lock plate is attached to the same pin 40. 42 is assembled so as to be rotatable in the vertical direction.

0012 A lock formed on the inner base plate 31 is provided at one end of the lock plate 42. An engaging protrusion 42a that removably engages with the hole 31c is provided, and the coil spring 4 3 in the direction of engagement with the lock hole 31c. This engaging protrusion 42a is the lock hole 31c when the seat cushion SC is in the normal position shown by the solid line in FIG. to lock the cushion frame 35 against the inner base plate 31. Check. This prevents the seat cushion frame 35 from rotating.

[0013] On the other hand, at the rear end of the upper rail 22 is a hinge bracket 4 for attaching the seat back. 4 is fixed to the bracket 44, and a seat back flap that constitutes the seat back SB is fixed to the bracket 44. One end of the frame 45 is attached so as to be rotatable in the front-rear direction. This hinge bracket A hinge pin 46 is welded to the lock 44, and a lock release lever is attached to the pin 46. 47 is rotatably assembled.

[0014] The lock release lever 47 and the lock plate 42 are connected to each other by a flexible cable 48. are connected. This flexible cable 48 is the same as the guide tube 48a. Consisting of an inner wire 48b inserted into a tube 48a, the guide tube One end of 48a is inserted into a recess 39a provided in the lock plate hinge bracket 39. It is fixed with a bull nut 49, and the other end is installed on the seat back hinge bracket 44. It is fixed to the girder recess 44a with a double nut 50. Also, the inner wire One end of 48b is hooked to a recess 42b provided in the lock plate 42, and the other end is hooked to a recess 42b provided in the lock plate 42. It is hooked into a recess 47a provided in the clever 47.

[0015] When the lock release lever 47 is rotated, the inner wire 48b is pulled and locked. The lock plate 42 rotates downward against the coil spring 43, and the engagement protrusion 42 a comes off from the lock hole 31c of the inner base plate 31. This allows the Since the lock of the seat cushion frame 35 is released, the same frame 35 becomes the guide. It becomes possible to rotate along the grooves 31b and 33b.

[0016] Next, as shown in Fig. 3, the inner upper rail 12 is equipped with a reclining The bracket 51 is stacked and fixed on the inner base plate 31, and the bracket 51, a reclining mechanism 52, such as that disclosed in the above-mentioned publication, is mounted on the bolt. It is fixed with a bolt 53. Seat back SB is connected to this reclining mechanism 52. Adjust the inclination angle by rotating the adjustment lever 54 (see Figure 1) can.

[0017] This embodiment has the above configuration, and the seat track locking mechanism (not shown) is operated. to release the lock, and then attach the upper rails 12 and 22 to the lower rails 11 and 21. The longitudinal position of the entire seat S can be adjusted by sliding it in the longitudinal direction. Also , the inclination angle of the seat back SB can be adjusted by operating the adjustment lever 54. It can be arranged. Furthermore, when the lock lever 47 is rotated when getting on or off, the lock plate 42 rotates and the engaging protrusion 42a comes out of the lock hole 31a, so the two-point chain shown in FIG. As shown by the lines, insert the seat cushion SC along both guide rails 32 and 34 grooves. It can be rotated toward the outside of the vehicle.

[0018] According to this embodiment, the seat cushion SC is made up of two pieces having different radii of curvature. Rotatably assembled to the upper rails 12, 22 via the guide rails 32, 34 of By doing this, the center of rotation O of the seat cushion SC can be set to the center of the same cushion SC. The front end of the seat cushion SC is deflected toward the outside of the vehicle cabin. The amount of deflection is increased, making getting on and off much easier.

[0019] In addition, both the seat cushion SC and seat back SB are connected to both guide rails 3. 2, 34 and the upper rails 12, 22 separately via the brackets 44, 51. Therefore, even if the seat cushion SC is rotated, the seat back SB does not rotate. Therefore, when rotating the seat cushion SC, move the seat back SB forward one by one. There is no need to fold down to avoid hitting the adjacent seat back SB, so it is easier to get on and off the seat. Easy to operate.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a rotating vehicle seat according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of essential parts of the seat.

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is an explanatory diagram of the operation of the seat.

[Explanation of symbols]

10, 20... Seat track, 11, 21... Lower rail, 12, 22... Upper rail, 31... Inner base plate, 31c... Lock hole, 32, 34... Guide rail, 33... Outer base plate, 35... Seat cushion frame, 36, 37 ...Guide plate, 38...
Slide piece, 42... Lock plate, 44... Seat back mounting hinge bracket, 45... Seat back frame, 47... Lock release lever, 48... Flexible cable, 51... Reclining mounting bracket, 5
2... Reclining mechanism, 54... Adjustment lever, S
…Rotating vehicle seat, SC…Seat cushion, SB
...seat back.

Claims (1)

[Scope of utility model registration request] 1. A pair of inner and outer seat tracks consisting of a lower rail fixed to the vehicle body floor and an upper rail slidably attached to the same rail in the longitudinal direction, an arcuate inner guide rail fixed to the upper rail of the inner seat track. , an arcuate outer guide rail having a smaller radius of curvature and the same center of curvature than the outer rail and fixed to the upper rail of the outer seat track, and rotatable to the outer guide rail via a guide member fitted to each of the guide rails. 1. A rotatable vehicle seat comprising: a seat cushion assembled to a seat cushion; and a seat cushion locking means for releasably locking the rotation of the cushion.