JPH0548747U - Vehicle reclining mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] The individual seats of a backseat fixed type vehicle seat in which the seats of a plurality of seats are integrally formed are used in a reclining state. A rotation stop that rotatably mounts an underframe 3 on a pedestal 1 via a rotation device 2 and fixes the underframe 3 at an appropriate position on the pedestal 1 at a use position in a predetermined direction. 8 is a seat for a vehicle in which the rotation stop 8 is released and the underframe 3 can be turned. A seat cushion metal frame 12 is slidably mounted on the underframe 3 in the front-rear direction, and a seat lock 11 is interposed between the seat cushion metal frame 12 and the underframe 3 at the waist position of the backrest 7. The upper end of the lumbar support plate 16 is rotatably supported, and the lower end of the lumbar support plate 16 is configured to freely project forward, and the seat cushion metal frame 12 is provided on the back surface of the lumbar support plate 16. Slide plate 18 protruding upward at the rear end
And the lower end of the lumbar support plate 16 is pushed forward and stopped at the reclining position following the forward movement of the seat cushion metal frame 12.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle stool to be mounted on various vehicles such as railway cars, automobiles, airplanes, ships and the like (hereinafter referred to as “vehicles”), and in particular, a fixed backrest type in which multiple seats are integrally formed. The present invention relates to a reclining mechanism for a vehicle seat, which is configured so that the lower end portion of the lumbar support plate of the backrest can be tilted following the forward movement of the seat cushion.

[0002]

[Prior Art]

 As shown in FIG. 15, a stool for a vehicle generally used in the past has an underframe 52 mounted on a leg stand 51 fixed to a floor surface of a vehicle or the like via a rotating device (not shown). A sleeve body 53, an armrest 54, a seat cushion 55 and a backrest 56 are mounted on the underframe 52 to form a stool body 57, and the stool body 57 is rotated together with the underframe 52 so that the stool is oriented in the front-back direction. In many cases, the backrest 56 can be used by being tilted rearward by the reclining mechanism 58 while being configured so that it can be turned to the rear. The reclining mechanism 58 spans a seat lock 60 between a lower end portion 59 a of a backrest frame 59 that supports the backrest 56 and the underframe 52, and the extension and contraction of the seatlock 56 causes the backrest 56 to rotate about a rotating shaft 61. The backrest 56 is made to recline by inclining steplessly. That is, the seat lock 60 is moved or stopped by operating a pedal 62 or an operating lever (not shown) formed on the armrest 54 or the like to move the fluid pressure of gas or oil enclosed in the seat lock 60. Thus, the backrest 56 can be tilted at a desired tilt angle and its tilted posture can be fixed.

[0003]

[Problems to be solved by the device]

 However, the reclining mechanism 58 of the backrest 56 as described above is mounted on a plurality of seats that have been manufactured recently, and is not attached to each seat in the new type of backrest fixing type integrally formed with the backrest. It had the problem that it could not be configured.

The present invention has been made in view of the above problems, and is used in a reclining state of each seat even in a backrest-fixed type vehicle stool in which a plurality of seat backs are integrally formed. An object of the present invention is to provide a reclining mechanism for a vehicle that can be used.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, a reclining mechanism for a vehicle seat according to the present invention includes a base frame that is rotatably mounted on a pedestal through a rotating device, and the pedestal is mounted at an appropriate position on the pedestal. In a vehicle stool in which a rotation stop for fixing the frame to a use position in a predetermined direction is arranged, and the rotation stop is released to enable the turning operation of the underframe, the seat rail metal frame is moved forward and backward on the underframe. The seat bar is slidably mounted on the lumber support and the seat lock is interposed between the seat rail metal frame and the underframe, and the lumbar support plate is rotatably supported at the lumbar position of the backrest. The lower end of the plate is configured to freely project forward, and a slide plate projecting upward to the rear end of the seat bump metal frame is brought into contact with the back surface of the lumbar support plate, and the seat bump metal frame is formed. Following the forward movement of The members support plates and extruded forward is to summarized in that which is configured to stop the reclining position.

The reclining mechanism can be configured as a backrest-fixing type vehicle seat in which the backrests of a plurality of seats are integrally formed.

[0007]

[Action]

 According to the above configuration, when the seat lock is operated to slide the seat cushion forward, the slide plate projecting upward at the rear end of the seat cushion metal frame on which the seat cushion is placed becomes the lumbar support plate. Abut the back surface and push the lower end of the lumbar support plate forward. Thus, since the upper end of the lumbar support plate is rotatably supported at the waist position of the backrest, the lumbar support plate is tilted rearward at a desired angle from the posture of the initial position and the backrest Even if the inclination angle of the seat does not change, each seat is reclined by the forward movement of the seat cushion and the forward projection of the lower end of the lumbar support plate.

[0008]

【Example】

 An embodiment of a reclining mechanism for a vehicle seat according to the present invention will be described below with reference to the drawings. 1 to 3 show a backrest fixed type vehicle seat having a two-seat seat that constitutes a reclining mechanism according to the present invention. In the drawings, reference numeral 1 denotes a leg stand fixed to the floor surface of a vehicle or the like. An underframe 3 is mounted on the leg stand 1 via a rotating device 2, and a sleeve body 4 and an armrest 5 are mounted on the underframe 3. , The seat cushion 6 and the backrest 7 are attached to form a stool body. The seat back 7 is shared by both seats, and is fixed integrally with the sleeves 4 and 4 so that it does not tilt.

In this vehicle stool, the stool body is used together with the underframe 3 by turning it in the front-rear direction, and the rotation stoppers 8, 8, ... Are interposed between the leg stand 1 and the underframe 3. , The rotation stoppers 8, 8 ... Allow the stool body to be fixed at a use position in a predetermined direction. Reference numeral 9 is a pedal for releasing the rotation stoppers 8, 8 ... And 10 is a table mounted on the back surface of the backrest 6 so as to be freely developed.

4 and 5 show a reclining mechanism according to the present invention. Reference numeral 11 denotes a seat lock that is bridged between the lower rear surface of the seat cushion metal frame 12 and the front lower portion of the underframe 3. By the expansion and contraction operation of the seat lock 11, the seat pad metal frame 12 slidably mounted in the front and rear direction on the upper surface of the underframe 3 via the rollers 20, 20, ... The seat cushion 6 placed is configured to move in the front-back direction.

The seat lock 11 has a structure in which an elastic body (not shown) such as a spring is housed in the cylinder 11a to push the operating rod 11b to one side, and a gas sealed in the cylinder 11a. Alternatively, the operating rod 11b can be fixed at a desired position by stopping the movement of fluid pressure such as oil. The fluid pressure in the cylinder 11a can be controlled by opening and closing a release valve 11c formed on the side of the operating rod 11b. In the present invention, one side fixed end 11d of the seat lock 11 is seated. The frame 12 is fixed to the rear portion of the frame 12 by a support shaft 13, and the operating rod b side of the seat lock 11 is fixed to a bracket 14 which is erected inside the front beam 3a of the underframe 3 and is attached to the mounting portion 11e. Is to engage the lever rod 15 which is configured to be swingable with respect to the release valve 11c in a protruding manner, and by operating the lever rod 15, the release valve 11c is pressed to control the opening / closing of the valve port. The seat cushion metal frame 12 can be moved in the front-rear direction and fixed at the desired position.

In the above embodiment, the seat lock 11 is hung between the rear portion of the seat rail metal frame 12 and the front lower portion of the underframe 3 so that the seat pad 6 is pushed out in the direction in which the seat lock 11 contracts. Although the structure is shown, conversely, even if the seat lock 11 is hung between the front lower surface of the seat metal frame 12 and the rear lower portion of the underframe 3, the seat lock 11 extends in the same direction. Moreover, it is also possible to configure so that the seat cushion 6 is pushed out.

Reference numeral 16 denotes a lumbar support plate having an upper end supported by a hinge 17 and a lower end which can move forward and backward at a waist position of the backrest 7. The lumbar support plate 16 presses the waist position of the seated person to improve the usability, has a height of about 1/3 of the height of the backrest 7, and has a cushion material internally. It is a thing.

On the rear surface of the lower end portion of the lumbar support plate 16, a slide plate 18 protruding upward from the rear portion of the seat rail metal frame 12 is abutted and linked, and the rear surface of the lumbar support plate 16 is supported by the slide plate 18. Following the movement of the seat cushion metal frame 12 moving forward on the underframe 3, the lower end of the lumbar support plate 16 is pushed forward to be displaced to the reclining position.

As shown in FIG. 4, the lever rod 15 is connected to one end of an operating lever 19 formed at an appropriate portion of the seat cushion metal frame 12. Further, a relay member 20 such as a release wire is connected to the lever rod 15 and the other end is connected to a pedal 9 which is formed on the side surface of the foot stand 1, and the relay is performed by the length of the pedal 9 stepped on. It is also possible to pull the lever rod 15 in the direction of arrow A through the member 20. That is, the armature rod 15 has a structure in which it can be rotated by the operating lever 19 for reclining operation and by the relay member 20 which is interlocked with the operation of the pedal 9 when the seat is rotated.

FIG. 6 and FIG. 7 show the structure of the underframe 3, and 21 is a bracket that stands slightly upward and forward from the front beam 3a and the rear beam 3b that form the underframe 3, respectively. The rollers 21 are mounted on the roller 22, and the seat cushion metal frame 12 is placed on these rollers 21, 21 ... Slidably in the front-rear direction. Further, the seat cushion metal frame 12 includes rollers 24, 24 mounted on a bracket 23 projecting above the front beam 3a of the underframe 3 and rollers 24, 24 mounted on a receiving plate 25 fixed on the rear portion of the underframe 3. … Place it slidably on top.

8 to 12 show a seat cushion metal frame 12, 26 is a seat plate on which the seat cushion 6 is mounted, and 27 is a seat cushion metal frame 12 inside the seat cushion metal frame 12. A rail having an L-shaped cross section fixed in the sliding direction, that is, in the longitudinal direction. The rollers 24, 24 ... Are fitted to the rail 27 to prevent the seat cushion metal frame 12 from being displaced in the left-right direction and upward.

13 and 14 show a reclining operation of the lumbar support plate 16, and FIG. 13 shows a state before the reclining operation. When changing from this state to the reclining state shown in FIG. 14, the operating lever 19 is operated to operate the lever rod 15, or the pedal 9 is stepped on to pull the relay member 20 to pull the relay member 20. By rotating the lever rod 15 connected to the seat lock 11, the release valve 11c of the seat lock 11 is opened and closed, and the seat cushion metal frame 12 is appropriately moved from the initial seating posture to the desired front position. The lower end of the support plate 16 can be pushed forward by a slide plate 18 protruding from the rear part of the seat cushion metal frame 12 and stopped at the reclining position.

Further, when the seat cushion 6 is moved rearward by the operation lever 19, the lumbar support plate 16 returns to its original position depending on the weight of the seated person. An elastic member (not shown) such as a coil spring is provided near the hinge 17 attached to the upper edge of the lumbar support plate 16 to automatically return the lumbar support plate 16 to its original position. You can also do it.

[0020]

[Effect of the device]

 Since the reclining mechanism for a vehicle seat according to the present invention is configured as described above, the lumbar support in which the lower part of the seat cushion is tilted forward in accordance with the forward movement of the sitting hood without reclining the individual backrests. Since the stool is in a reclining state due to the movement of the plate, even a stool for a vehicle fixed to the backrest can be in a reclining state, and a seated person can sit comfortably.

Moreover, unlike the conventional reclining mechanism, the upper end of the backrest does not largely project rearward, so that the stool body can be rotated regardless of whether or not it is in a reclining state. The effect after the device is implemented is extremely large.

[Brief description of drawings]

FIG. 1 is a side view showing a vehicle seat for implementing a vehicle seat reclining mechanism according to the present invention.

FIG. 2 is a front view of a vehicle seat.

FIG. 3 is a plan view of a vehicle seat.

FIG. 4 is a sectional view of an essential part showing a reclining mechanism.

FIG. 5 is a partial cutaway plan view showing a reclining mechanism.

FIG. 6 is a plan view showing an underframe.

FIG. 7 is a side view showing an underframe.

FIG. 8 is a plan view showing a seat cushion metal frame.

FIG. 9 is a right side view showing a seat cushion metal frame.

FIG. 10 is a front view showing a seat cushion metal frame.

FIG. 11 is a left side view showing a seat cushion metal frame.

FIG. 12 is an enlarged sectional view of an essential part showing a positional relationship between a seat cushion metal frame and a roller.

FIG. 13 is a side view showing a state before reclining.

FIG. 14 is a side view showing a state after reclining.

FIG. 15 is a cross-sectional view of essential parts showing a conventional vehicle seat.

[Explanation of symbols]

 1 Leg stand 2 Rotating device 3 Frame 6 Seat cushion 7 Backrest 8 Rotation stop 11 Seat lock 12 Seat cushion Metal frame 16 Lumber support plate 18 Slide plate

Claims (2)

[Scope of utility model registration request] 1. A base frame is rotatably mounted on a leg base through a rotating device, and a rotation stop for fixing the base frame to a use position in a predetermined direction is arranged at an appropriate position on the leg base. ,
In a vehicle stool for releasing the rotation stop and enabling a turning operation of an underframe, a seat cushion metal frame is slidably mounted in the front-rear direction on the underframe, and the seat cushion metal frame and the platform are mounted. A seat lock is interposed between the frames, the upper end of the lumbar support plate is swingably supported at the lumbar position of the backrest, and the lower end of the lumbar support plate is configured to freely project forward. A slide plate protruding upward from the rear end portion of the seat cushion metal frame is brought into contact with the back surface of the lumbar support plate, and the lower end portion of the lumbar support plate is pushed forward following the forward movement of the seat cushion metal frame. Reclining mechanism for a vehicle, characterized in that it is configured to stop at a reclining position. 2. A reclining mechanism for a vehicle seat, wherein the reclining mechanism according to claim 1 is configured as a fixed seat back type vehicle seat in which the seat backs of a plurality of seats are integrally formed.