JPH04136938U - Automobile rear seat reclining structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a simplified reclining mechanism for use in an automobile rear seat. [Structure] A backrest 6 is pivoted to a rear bulkhead 2. The lower part of the backrest 6 is connected to a seat cushion side bracket 7 provided with an L-shaped slit 7a consisting of a front-rear passage and a vertical passage descending from the front end of the front-rear passage, and a seat cushion side bracket 7 whose upper end is connected to the backrest. A pin 9 is pivotally attached to the side bracket 8 and slides in the slit 7a at the lower end.
between the backrest side bracket 8 and the rear bulkhead 2. It is composed of a biasing spring 11 provided therein, and an operation band 12 whose rear end is fixed near the center of the reclining lever 9, and the reversing spring 10 is used during the transition between the upright state of the backrest and the reclining state. Invert it with .

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a reclining mechanism for an automobile rear seat.

0002

[Conventional technology]

The backrest is connected to the seat cushion by a hinge member fixed to the backrest. It is supported rotatably around a rotation axis fixed to the backrest, and the sides of the backrest are A pin is provided at the top that can be retracted by operating the operating lever, and the pin is attached to the backrest side. It can be selectively fitted into multiple adjustment holes at the inclination angle adjustment position provided on the side member of the vehicle body. A device that allows the inclination angle of the backrest to be adjusted has already been developed. (For example, see Japanese Utility Model Application No. 61-45846).

0003

[Problem that the idea aims to solve]

In the above conventional device, the upper part of the side of the backrest can be accessed and retracted by operating the operating lever. The vehicle body side member on the side of the backrest is provided with a double pin that is fitted with the above-mentioned pin. A tilt angle adjustment device with several adjustment holes must be installed, and the tilt angle adjustment device must be The problem was that the equipment had to be larger.

0004 This invention has an extremely simple mechanism that can only be adjusted in two stages. The purpose is to provide a seat reclining function.

[0005]

[Means to solve the problem]

This invention allows the upper part of the backrest to rotate around the vehicle body side parts such as the rear bulkhead. The inclination angle of the backrest can be changed by pivoting the backrest and moving the lower part in the front-back direction. In the reclining device for the rear seats of automobiles, the backless The longitudinal position moving device at the bottom of the An L-shape that is attached to the rear side of the seat cushion or to the vehicle body side member. The upper end is pivotally attached to the lower part of the backrest, and the lower end is attached to the upper part of the backrest. A reclining lever with a pin that slides inside an L-shaped slit, and one end It is locked to the backrest and the other end is locked near the center of the reclining lever. The reversing spring that has been a biasing spring provided between the backrest and the backrest and biasing the backrest to move backward; The pin of the reclining lever is located in the vertical passage of the L-shaped slit. The backrest is in the upright position with the lower part of the backrest in the rear position near the lower end, and the upper The pin of the reclining lever is located at the rear end of the front and rear passage of the L-shaped slit. During the transition between the reclining state where the lower part of the rest is in the forward position, The feature is that the reversal spring reverses beyond the dead point. It is something.

[0006]

[Effect]

Due to the above, when the backrest is in the reclined state, the backrest is tilted. Pull the bottom of the striker forward against the clockwise biasing force of the reversing spring. Insert the pin provided at the lower end of the reclining lever into the front and rear passages of the L-shaped slit. When the bag is moved forward and reaches the bend located at the frontmost part of the front and rear passage, While maintaining the forward tension at the bottom of the rest, move the area near the center of the backrest backwards. When pressed, the pin of the reclining lever will move down the vertical passage of the L-shaped slit. During this descent, the reversing spring overcomes the dead point and the reclining lever The back lever is switched to a biasing force that rotates counterclockwise. The lower part of the backrest is pressed toward the rear, that is, the rear bulkhead, and the backrest is upright. maintain the status.

[0007] Then pull the bottom of the backrest when the backrest is held upright The reclining lever moves against the counterclockwise biasing force of the reversing spring. While the pin provided at the lower end is raised through the vertical passage of the L-shaped slit, a reverse spring is generated. To overcome the dead point, rotate the reclining lever clockwise. The pin at the lower end of the reclining lever is L-shaped. When you reach the bend located at the top of the vertical passage of the slit, the backrest When you release your hand from the bottom, the biasing force of the reversing spring in the clockwise direction and the biasing spring Due to the backward biasing force of the reclining lever, the pin of the reclining lever is pushed into the L-shaped slit above. Move backward (to the left) through the front and rear passages of the The pin is pressed against the rear end by the biasing force in the clockwise direction, and the backrest is tilted. It is held in a reclined position.

[0008]

【Example】

FIG. 1 is a rear perspective view of an automobile to which the present invention is applied, in which 1 is an automobile body; is the rear bulkhead, 3 is the step part of the rear floor, and 4 is the step part 3 of the rear floor. The mounted seat cushion 5 and the upper part are rotatably pivoted to the rear bulkhead 2. The above-mentioned seat cushion is mounted so that the lower part of the seat cushion can be moved in the front and back direction using a front and rear position moving device. This is a rear seat consisting of a backrest 6 supported by a section 5.

[0009] Figure 2 shows an embodiment of the front-rear position moving device according to the present invention. The seat cushion 5 is placed on the stepped portion 3 and fixed by a fixing means (not shown). The rear end has a hat-shaped cross section, and the upper surface has a front and rear passage and a lower part from the front end of the front and rear passage. Seat cushion side bra provided with an L-shaped slit 7a consisting of a vertical passage leading down 7 is attached, and the backrest 6 has a rotating The shaft 6a is rotatably attached to the rear bulkhead 2 by a support member (not shown). At the same time, a backrest side bracket 8 with a hat-shaped cross section is attached to the lower end. The upper surface of the backrest side bracket 8 is provided with the seat cushion at the lower end. A recliner equipped with a pin 9a that slides inside the L-shaped slit 7a of the side bracket 7. The upper end of the inning lever 9 is a rotation shaft 8 provided on the backrest side bracket 8. It is pivotably attached to a.

0010 10 has both ends connected to the backrest side bracket 8 and the reclining lever. 9 is a coil-shaped reversing spring, and 11 has both ends attached to the above-mentioned battery. The back is secured to the crest side bracket 8 and the rear bulkhead 2, respectively. A biasing spring that biases the rest-side bracket 8 toward the rear bulkhead 2 side. The spring 12 is an operating band attached to the approximate center of the rod 9, and is a band for operation. The upper part of the headrest 6 is rotatably supported by a rotation shaft 6a, and the lower part is supported by a reversing sprocket. The ring 10 is biased clockwise against the backrest 6 and is provided at the lower end. The pin 9a is located in the front and rear passage of the L-shaped slit 7a of the seat cushion side bracket 7. is supported by the reclining lever 9 located at the rearmost part of the The bag shown in Figure 2 is biased backward (to the left in the figure) by the ring 11. The rest can be maintained in an inclined reclined position. .

[0011] Figures 3 (A), (B), and (C) show a reclining state with the backrest 6 tilted. The operating procedure for transitioning from the state to the upright state with the backrest 6 upright is shown. 3(A), the lower end of the backrest 6 is in the forward position. In the lining state, move the operating band 12 forward against the biasing spring 11. (to the right in the figure), the reclining lever 9 will rotate counterclockwise. However, the pin 9a attached to the lower end of the reclining lever 9 Under the front and rear passage of the L-shaped slit 7a provided in the seat cushion side bracket 7 The lower end of the backrest 6 moves forward in the front and back passage while being regulated by the surface. move the part forward.

0012 The backrest is removed by the forward operating force (in the direction of the solid arrow) of the operating band 12 The lower end of 6 moves forward and connects to the rotation shaft 8a provided on the backrest side bracket 8. The reclining rail is pressed clockwise by the reversing spring 10. The pin 9a of the bar 9 is attached to the seat cushion side bracket 7 as shown in FIG. 3(B). When it comes to the bending part of the L-shaped slit 7a, the solid line for the operation band 12 While maintaining the tensile force in the direction of the arrow, move the vicinity of the center of the backrest 6 backwards (dotted line arrow). When the pin 9a of the reclining lever 9 is pushed in the direction indicated by the mark), the pin 9a of the reclining lever 9 will Move the vertical passage of the L-shaped slit 7a of the side bracket 7 downward, and remove the back lever. The pushing force in the direction of the dotted arrow on the lower part of the reclining lever 9 is applied to the lower part of the reclining lever 9. The reversing spring 10 is rotated counterclockwise against the biasing force of the spring 10. The locking point 9b to the reclining lever 9 is the back lever of the reversing spring 10. Locking point 8b to the rest side bracket 8 and the backrest side of the reclining lever 9 When you cross the dead point on the straight line connecting the locking point 8a to the bracket 8, the upper The reversing spring 10 is reversed and the reclining lever 9 is rotated counterclockwise. However, as shown in FIG. 3(C), the reclining lever 9 The pin 9a is located in the vertical passage of the L-shaped slit 7a of the seat cushion side bracket 7. Since it is located inside and is restricted from moving forward (rightward), the above-mentioned reclining The counterclockwise urging force acting on the lever 9 causes the backrest 6 to move toward the rear bulkhead. It is held in an upright state as shown in FIG. 3(C) in contact with the door 2.

[0013] Contrary to the above, from the upright state of the backrest 6 as shown in FIG. 3(C), ) to shift the backrest 6 to a tilted reclining state as shown in The operating procedure is as follows.

[0014] That is, in FIG. 3(C), the operating band 12 is rotated counterclockwise of the reversing spring 10. forward against the biasing force in the upward direction and the backward (left) biasing force of the biasing spring 11. When the lower end of the backrest 6 moves forward (to the right), The pin 9a of the reclining lever 9 moves slightly downward from the position shown in Figure 3(C). At the same time, the reclining lever 9 rotates clockwise, and the reversing spring The locking point 9b to the reclining lever 9 of 10 is located at the back of the reversing spring 10. Locking point 8b to crest side bracket 8 and backrest of reclining lever 9 When the dead point on the straight line connecting the locking point 8a to the side bracket 8 is crossed, , the reversing spring 10 is reversed and the reclining lever 9 is rotated clockwise. A biasing force is applied to move the operating band 12, and this biasing force is applied to the front (right side) of the operating band 12. The pin 9a of the reclining lever 9 is shown in FIG. Pull it up to the bent part of the L-shaped slit 7a.

[0015] In this state, if you stop pulling the operating band 12 forward (to the right), the reversing sprocket Clockwise biasing force of ring 10 and rear (left side) of biasing spring 11 The pin 9a of the reclining lever 9 is pushed into the L-shaped slit 7a by the urging force. Move backward (to the left) along the horizontal passage until the backrest 6 tilts as shown in Figure 3(A). It is held in an oblique reclined position.

[0016] As mentioned above, the lower part of the backrest 6 whose upper part is pivoted to the rear bulkhead 2 From the front and rear passages and the front ends of the front and rear passages, A seat cushion side block with an L-shaped slit 7a consisting of a downward vertical passage. The racket 7 has an upper end rotatably attached to a backrest side bracket 8 and a lower end. slide inside the L-shaped slit 7a of the seat cushion side bracket 7. A reclining lever 9 with a pin 9a and one end attached to the backrest side bra. 8 and the other end is locked near the center of the reclining lever 9. reversing spring 10, rear bulkhead 2 and backrest side bracket 8 the biasing spring 11 provided between the reclining lever and the rear end thereof. A simple mechanism consisting of an operating band 12 fixed near the center of the By doing so, the backrest 6 can be placed in an upright position and the backrest 6 can be tilted. We have implemented a simple reclining device that allows you to select between two reclining states at a low cost. can be expressed.

[0017]

[Effect of the idea]

As mentioned above, according to the present invention, the upper part of the backrest can be attached to the rear bulkhead of the vehicle. Backless by rotatably pivoting to the body side member and moving the lower part in the front and back direction. A reclining device for automobile rear seats that allows the tilt angle of the seat to be changed. , move the backrest lower backrest position moving device to the front and rear passages and the front end of the front and rear passages. It consists of a vertical passage that descends from the side of the seat cushion to the rear side of the seat cushion or to the vehicle body side member. The attached L-shaped slit and the upper end are rotatably attached to the bottom of the backrest. A reclining rail with a pin at the bottom end that slides inside the L-shaped slit. One end is locked to the backrest and the other end is attached to the reclining lever. The reversing spring locked near the center, the backrest and rear bulkhead The pin of the reclining lever is It is near the lower end of the vertical passage of the L-shaped slit, and the lower part of the backrest is in the rear position. The backrest is upright and the pin of the reclining lever above has an L-shaped slit. It is located at the rear end of the front and rear passages, and the lower part of the backrest is in the front and back positions. The above reversal spring crosses the dead point and reverses during the transition between the This allows the lower part of the backrest to move forward when in the reclined position. When the pin of the tension reclining lever comes to the bent part of the L-shaped slit, the bag will close. While maintaining the forward pulling force at the bottom of the crest, pull around the center of the backrest. When pushed backwards, the pin moves down the longitudinal passage of the L-shaped slit, while the reversing spring is reversed and switches to a counterclockwise biasing force, pushing the bottom of the backrest backwards. to keep the backrest upright, and to keep the backrest upright. Pull the bottom of the reclining lever so that the pin of the reclining lever moves up the vertical passage of the L-shaped slit. While rising, the reversing spring reverses and switches to a clockwise biasing force, so the When the pin of the lining lever comes to the bent part of the L-shaped slit, the backrest When you release your hand from the bottom, the clockwise biasing force of the reversing spring and the biasing spring are released. The reclining lever pin slides into an L-shaped slit due to the backward biasing force of the pull. When the robot moves backward through the front and rear passages and reaches the rear end, the above-mentioned reversing spring The reclining lever, which is biased clockwise, moves the rear of the backrest. The backrest can be held in a reclined position by supporting it in the forward position. It is a simple structure that can bring about great practical effects. It is.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the rear part of a vehicle body to which the present invention is applied.

FIG. 2 is a side view of the rear seat and its surroundings showing an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing the operating mode of the device of the present invention, (A)
indicates a reclined state with the backrest tilted;
(B) shows the transition from the reclining state to the backrest upright state, and (C) shows the backrest upright state.

[Explanation of symbols]

1 Automobile body 2 Rear bulkhead 3 Rear floor step 4 Rear seat 5 Seat cushion 6 Backrest 7 Seat cushion side bracket 7a L-shaped slit 8 Backrest side bracket 8a Rotation axis 8b Locking point 9 Reclining lever 9a pin 9b Locking point 10 Reversal spring 11 Biasing spring 12 Operation band

Claims (1)

[Scope of utility model registration request] Claim 1: A rear seat for an automobile, in which the upper part of the backrest is rotatably pivoted to a vehicle body side member such as a rear bulkhead, and the inclination angle of the backrest can be changed by moving the lower part in the longitudinal direction. In a reclining device, the device for moving the lower part of the backrest back and forth is arranged in an L-shaped slit that is made up of a front and rear passage and a vertical passage that descends from the front end of the front and rear passage, and that is attached to the rear side of the seat cushion or to the vehicle body side member. and a reclining lever having an upper end rotatably pivoted to the lower part of the backrest and a lower end having a pin that slides in the L-shaped slit, and one end being locked to the backrest and the other end. A reversing spring is secured near the center of the reclining lever, and a biasing spring is provided between the rear surface of the backrest and a vehicle body side member such as a rear bulkhead to urge the backrest to move rearward. The pin of the reclining lever is located near the lower end of the vertical passage of the L-shaped slit, and the backrest is upright when the lower part of the backrest is in the rear position, and the pin of the reclining lever is located in the L-shaped slit.
The reversing spring is located at the rear end of the front and rear passage of the letter-shaped slit and is configured to reverse over a dead point in the middle of the transition between the reclining state and the lower part of the backrest in the forward position. Reclining mechanism for automobile rear seats.