JP2005279152A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate a step between a case and a lever. <P>SOLUTION: A seat for a vehicle is provided with: an inclination adjusting circular arcuate gear 11 which is circularly arranged with a backrest attachment shaft 6, which is the turning center of a backrest seat 3, as a center in the sitting side bracket 5 of a sitting seat; a lock member 8 which is arranged in the backrest side bracket 7 of the backrest seat 3 and includes a lock gear part 10 engaged with the inclination adjusting circular arcuate gear 11; and the lever 21 for disengaging the lock gear part 10 from the inclination adjusting circular arcuate gear 11. In the seat for the vehicle, the lever 21 is provided with a link rod 30, which is energized so as to be normally turned in a clockwise or counterclockwise direction between an operation transmission rod 32 and the lever 21, in a reclining device connected through the use of the operation transmission rod 32 and an operation lever 35 which is freely turnably arranged in the case 42 disposed at the prescribed position of the backrest seat 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a reclining device or a locking device for a vehicle seat, and particularly relates to attachment of an operation lever such as a reclining device.

Conventionally, a configuration in which an operation lever of a lock device that locks a seat belt provided on a back seat is provided at a predetermined position of a vehicle seat, and the lock device and the operation lever are connected by an operation transmission member is known (Patent Document 1). reference).
JP 59-14548 A

In the known example, since the distance (interval) between the operation lever and the locking device is shifted by a manufacturing tolerance, the operation transmission member is formed of a wire, but an operation transmission loss occurs. There are challenges.
That is, when the operating lever and the locking device are connected by a rod, the operability is improved, but on the other hand, the distance between the operating lever and the locking device changes due to the tolerance, and the operating lever is covered with a cover as shown in FIG. When surrounded, a step H appears between the operation lever surface and the edge of the cover, and this step H is based on a tolerance that is originally within a range of dimensions allowed in advance. Another problem arises that the level difference H is easily seen by the eyes and the appearance is deteriorated.
However, this problem cannot be solved by means of increasing the accuracy of manufacturing and assembling as long as the tolerance is originally within the allowable range.
The present application is to provide a reclining device having a simple step and having a step difference equivalent to that of eliminating the tolerance.

In the present invention, the back seat 3 is attached to the seat seat via the reclining device R so that the inclination angle can be adjusted, or the seat seat or the back seat is fixed to the vehicle body by a locking device, and the reclining device R Alternatively, the lock device and the operation lever 35 of the device are connected by an operation transmission rod 32 such as a rod, and the operation lever 35 is rotated clockwise between the reclining device R or the lock device and the operation transmission rod 32. This is a vehicle seat provided with a link rod 30 biased so as to always rotate in either the direction or the counterclockwise direction.
In the present invention, the backrest seat 3 is attached to the seat seat via the reclining device R so that the inclination angle can be adjusted. The reclining device R is attached to the seat-side bracket 5 of the seat seat and the center of rotation of the backrest seat 3. A tilt adjusting arc gear 11 provided in an arc shape centered on the dorsal fin mounting shaft 6, and a lock gear portion provided on the dorsal side bracket 7 of the dorsal seat 3 and engaged with the tilt adjusting arc gear 11. 10 and a lever 21 for detaching the lock gear portion 10 from the tilt adjusting arc gear 11, and the lever 21 is a case 42 provided at a predetermined position of the dorsal seat 3. The operation lever 35 is rotatably connected to the operation transmission rod 32 and the operation transmission rod 32 and the lever 21 are connected in the clockwise direction or the counterclockwise direction. It is obtained by a vehicle seat provided with a biasing link rod 30 to constantly rotating crab.
In the present invention, one end of the link rod 30 is attached to the lever 21 by a shaft 31, and the other end is attached to the operation transmission rod 32 by a shaft 33, and the shaft 31 and the shaft 33 of the link rod 30 are connected. A hook 50 is provided in the middle and closer to the shaft 31 than the middle, and a vehicle seat is provided in which a spring 51 is provided between the hook 50 and the seat side bracket 5 side.
In the present invention, the link rod 30 is configured such that the position of the shaft 33 is positioned in either the clockwise direction or the counterclockwise direction with respect to the axis 31, and between the lever 21 and the operation lever 35. Even when the distance between them is short, the vehicle seat is configured so that the operation transmission rod 32, the shaft 33, and the shaft 31 do not rotate beyond the line S arranged in the same straight line.
In the present invention, the lever 21 is pivotally attached to the dorsal bracket 7 by a shaft 17 at the intermediate portion in the length direction, and the lock member 8 is attached to the arc gear 11 for tilt adjustment at one end of the lever 21. An engaging hole 22 for engaging the engaging portion 20 of the cam body 16 to be pressed and an unlocking cam hole 25 for engaging and disengaging with the engaging pin 26 of the locking member 8 are formed, and the other end of the lever 21 is formed. The link rod 30 is a vehicle seat attached by a shaft 31.

In the first and second aspects of the invention, the link rod 30 urged so as to always rotate pulls the operation transmission rod 32 to prevent the operation lever 35 from floating, and the operation lever 35 and the case 42 Steps can be eliminated.
In the invention of claim 3, since the portion between the lever shaft 31 and the rod shaft 33 of the link rod 30 and closer to the lever shaft 31 from the middle is pulled and biased by the spring 51, the reclining device by the operation lever 35 is used. The unlocking operation can be lightened, and the step between the operation lever 35 and the case 42 can be eliminated without sacrificing operability.
According to the fourth aspect of the present invention, it is possible to eliminate the step between the operation lever 35 and the case 42 corresponding to both the length of the interval between the lever 21 and the operation lever 35.
In the invention of claim 5, the spring 51 can also be used as a spring for biasing the lock member 8 so as to engage with the inclination adjusting arc gear 11, thereby reducing the number of parts and increasing the cost.

An embodiment of the present invention will be described with reference to the drawings. A back seat 3 is attached to a seat seat (not shown) via a reclining device so that an inclination angle can be adjusted, or a seat seat or a back seat is locked to a vehicle body by a lock device. This is related to the attachment of the operation lever 35 of various devices R of various vehicle seats such as fixing to the vehicle. The configuration of the various devices R is arbitrary, and in the embodiment, an example of a reclining device is described.
Reference numeral 5 denotes a seat-side bracket fixed to a vehicle seat (not shown). Although not shown in the embodiment, the seat-side bracket is fixed to an upper rail that slides against a lower rail of a slide rail fixed to the vehicle body. ing. A back bracket 7 of the back seat 3 is rotatably attached to the seat side bracket 5 by a back attachment shaft 6.
A base portion of a lock member 8 is rotatably attached to the dorsal bracket 7 by a lock attachment shaft 9, and a lock gear portion 10 is formed at the tip of the lock member 8.
The seat side bracket 5 is formed with an inclination adjusting arc gear 11 to which the lock gear portion 10 of the lock member 8 is connected and disconnected. The inclination adjusting arc gear 11 is formed in an arc shape centered on the back attachment shaft 6. The seat-side bracket 5 on the front side in the inclination direction of the back-side bracket 7 with respect to the inclination adjusting arc gear 11 is formed with a forward-turning engagement groove 12 for fixing the forward-turned back-back seat 3. It is not a requirement.

Accordingly, the cam member 15 is formed on the lock member 8, and the tip of the cam body 16 is brought into contact with the cam member 15. The cam body 16 is rotatably attached to the back bracket 7 by a shaft 17. The cam body 16 is formed with an engaging portion 20 having a shape bulging laterally, and the engaging portion 20 is closely engaged with the engaging hole 22 of the lever 21. The lever 21 is rotatably attached to the dorsal bracket 7 by fitting a through hole 23 provided in an intermediate portion in the length direction to the shaft 17.
An unlock cam hole 25 is formed at the end (one end) of the lever 21 on the lock member 8 side, and an engagement pin 26 provided on the lock member 8 is fitted and inserted into the unlock cam hole 25. The lever 21 is rotated and the engagement pin 26 is moved by acting on the unlocking cam hole 25, so that the lock gear portion 10 of the lock member 8 is detached from the inclination adjusting arc gear 11 or the forward tilting engagement groove 12.

That is, since the cam body 16 acts only to press the lock member 8 in the locking direction, the lock member 8 can be moved to the inclination adjusting arc gear 11 or only by separating the cam body 16 from the cam surface 15 of the lock member 8. The lock member 8 is unlocked by the action of the unlock cam hole 25 and the engagement pin 26 since it does not detach from the forward tilting engagement groove 12.
One end of the link rod 30 is pivotally attached to the other end of the lever 21 by a shaft 31 (referred to as a lever shaft for convenience in understanding). The link rod 30 has a single-shaft bar shape having a predetermined length, and the other end of the link rod 30 is pivotable by a shaft 33 (referred to as a rod shaft for convenience) 33 at the lower end of the operation transmission rod 32. Attached to.

The upper end of the operation transmission rod 32 is pivotally attached to the lower end of the arm portion 36 of the operation lever 35 by a shaft 37, and the operation lever 35 is rotatably attached to a stay 40 provided at a desired position of the dorsal seat 3 by a shaft 41. The stay 40 is provided with a box-shaped case 42 having an open upper surface, and the operation lever 35 is positioned in the case 42.
In the embodiment, the operation lever 35 and the shaft 41 are integrally formed. 44 is a recess for fitting the case 42 provided on the back sheet 3, and 45 is a back frame of the back sheet 3.

  Accordingly, the distance (interval) between the lever 21 and the arm portion 36 of the operation lever 35 is shifted by a manufacturing tolerance, which is the height between the upper surface of the operation lever 35 and the edge 43 of the case 42. It appears that it will appear to be surely recognized by the human eye and it will not look good, but as the accuracy of manufacturing and assembly has been raised as long as it is within the tolerance range originally allowed However, there is a limit, and a level difference H is inevitably generated between the upper surface of the operation lever 35 and the edge 43 of the case 42 (FIG. 15).

In the present application, a hook 50 is provided at a predetermined position between the lever shaft 31 and the rod shaft 33 of the link rod 30, and the upper end of the spring 51 is locked to the hook 50, and the lower end of the spring 51 is an arbitrary part of the seat side bracket 5. The spring 51 is engaged with the fixed portion so as to urge the link rod 30 so as to always rotate in either the clockwise direction or the counterclockwise direction with respect to the lever shaft 31.
In this case, the link rod 30 always inclines in either the clockwise direction or the counterclockwise direction from the line S in which the shaft center of the operation transmission rod 32, the rod shaft 33, and the lever shaft 31 are aligned in the same straight line. To prevent mechanical locking (FIG. 3). That is, the line S is a state in which the shaft center of the operation transmission rod 32, the rod shaft 33, and the lever shaft 31 are arranged in the same straight line as in the operation start state of the operation lever (FIG. 11).

In the embodiment, since the link rod 30 is attached to the front side of the lever 21, the link rod 30 is urged in the clockwise direction so that the rotation direction is the rear side, thereby reducing the size.
As described above, by urging the link rod 30 to always rotate in one direction, the operation transmission rod 32 is always pulled downward, and the step between the operation lever 35 and the case 42 due to the tolerance of the operation mechanism is eliminated. To do.
In this case, the position of the hook 50 is an operation for pulling the operating lever 35 when the spring 51 is as close as possible to the lever shaft 31 within a range in which the elasticity of the spring 51 can exert the “force” that can pull the operation transmitting rod 32. You don't need to increase the force, and you don't sacrifice operability. In the embodiment, the hook 50 is provided at a position separated from the lever shaft 31 by 1/5 of the length of the link rod 30.

The elasticity of the hook 50 at this time weakens the “force” when the link rod 30 is rotated around the axis of the lever shaft 31, but the traction force that pulls the lever shaft 31 itself acts as it is. The lever 21 is rotated via 31, and the lever 21 rotates the cam body 16 via the engagement hole 22, and as a result, the lock gear portion 10 of the lock member 8 is tilted forward and strongly pressed against the engagement groove 12.
Therefore, the operation lever 35 is prevented from being lifted by the single hook 50 and the lock member 8 is pressed against the inclination adjusting arc gear 11.

(Operation of Example)
When the operation lever 35 is operated, the arm portion 36 of the operation lever 35 pulls the operation transmission rod 32 upward, and the operation transmission rod 32 pulls the rod shaft 33 of the link rod 30. It rotates counterclockwise around the center.
When the operation transmission rod 32, the rod shaft 33, and the lever shaft 31 are arranged in the same straight line by the rotation of the link rod 30, the operation force of the operation lever 35 is transmitted to the lever 21, and the lever 21 is rotated in the clockwise direction. Let

  When the lever 21 rotates in the clockwise direction, the engagement hole 22 of the lever 21 rotates the cam body 16 via the engagement portion 20 to disengage from the cam surface 15 of the lock member 8, while The unlocking cam hole 25 moves the engagement pin 26 to disengage the lock gear portion 10 of the lock member 8 from the inclination adjusting arc gear 11 or the forward tilting engagement groove 12 to unlock the dorsal side bracket. 7 is free to rotate with respect to the seat side bracket 5.

  In this state, the back seat 3 is rotated back and forth to adjust the tilt position, and then the lever 21 is rotated by the elasticity of the spring 51 when the operation lever 35 is released. And the lock gear portion 10 of the lock member 8 is engaged with the arcuate gear 11 for tilt adjustment and locked.

  Thus, the operation lever 35 is rotatably provided in a case 42 provided on the back sheet 3, and a step is generated between the upper surface of the operation lever 35 and the edge 43 of the case 42. A hook hook 50 is provided at a predetermined position between the shaft 31 and the rod shaft 33, the upper end of the spring spring 51 is locked to the hook 50, and the lower end of the spring 51 is locked to an arbitrary fixing portion of the seat side bracket 5. The spring 51 is configured to urge the link rod 30 so as to always rotate in either the clockwise direction or the counterclockwise direction relative to the lever shaft 31, so that the link rod 30 is always in one direction. By rotating, the operation transmission rod 32 is always pulled downward, and the step between the operation lever 35 and the case 42 due to the tolerance of the operation mechanism is eliminated.

That is, FIG. 8 shows a standard state with a tolerance of “0” that meets the design criteria, and the engaging portion 20 is tilted backward in the drawing at a predetermined angle, and FIG. 9 shows the lever 21 and the operating lever 35. The link rod 30 is rotated clockwise with respect to the standard state to absorb the error (tolerance).
FIG. 10 shows a case in which the distance between the lever 21 and the operation lever 35 is short. The link rod 30 stands up counterclockwise with respect to the standard state to absorb errors (tolerances). In either case, the operation lever 35 does not make a step with respect to the case 42.

When this interval is short, the link rod 30 is always inclined in either the clockwise direction or the counterclockwise direction from the line S in which the shaft center of the operation transmission rod 32, the rod shaft 33 and the lever shaft 31 are arranged in the same straight line. Since it is arranged so as to prevent mechanical locking.
When the operation transmission rod 32, the rod shaft 33, and the lever shaft 31 are arranged in the same straight line by the rotation of the link rod 30, the operation force of the operation lever 35 is transmitted to the lever 21, and the lever 21 is rotated in the clockwise direction. Let

  In this case, since the position of the hook 50 is as close as possible to the lever shaft 31 within the range in which the elasticity of the spring 51 can exert the “force” that can pull the operation transmission rod 32, The force that 50 rotates the link rod 30 can be weakened, the operation force when pulling the operation lever 35 is not increased, and the operability is not sacrificed.

  Further, the lever 21 is pivotally attached to the dorsal bracket 7 by a shaft through hole 23 at an intermediate portion in the length direction, and the cam body 16 presses the lock member 8 against the arcuate gear 11 for tilt adjustment on one end side of the lever 21. An engagement hole 22 for engaging the engagement portion 20 is formed, a link rod 30 is attached to the other end of the lever 21 by a lever shaft 31, and a spring 51 is provided between the hook 50 near the lever shaft 31 and the fixing portion. The spring 51 acts so that the cam body 16 presses the lock member 8 against the inclination adjusting arc gear 11 via the lever 21 and prevents the operation lever 35 from being lifted by one hook 50. The lock member 8 is also pressed against the arcuate gear 11 for tilt adjustment.

  In the embodiment, the operation lever 35 only needs to be able to unlock the lock member 8, and may be attached to the case 42 provided on any one of the front surface, the upper surface, the rear surface, and the side surface of the back sheet 3. An operation member such as an operation lever for adjusting the inclination angle of the dorsal seat 3 may be provided.

The side view which shows an example of a reclining apparatus and an operation lever. The exploded perspective view. The side view of a reclining apparatus. The side view of a lever. The side view of a link fence. The vertical side view of an operation lever part. FIG. The side view of a standard state. The side view in the state where the distance from the operation lever was long and the floating was corrected. The side view of the state which the distance with the operation lever was short and the sinking was corrected. The side view of the operation start state of an operation lever. The side view in which the lock member was unlocked by the operation lever. The side view of the state which fell the back sheet | seat backward. The side view which released the operation lever and the lock member was in the locked state. The side view which shows the subject of this application.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 2 ... Seat seat, 3 ... Dorsal seat, 5 ... Seat side bracket, 6 ... Dorsal side mounting shaft, 7 ... Dorsal side bracket, 8 ... Lock member, 9 ... Lock mounting shaft, 10 ... Lock gear part, 11... Inclination adjusting arc gear, 12... Tilting engagement groove, 15. Cam surface, 16. Cam body, 17 ... shaft, 20 ... engagement part, 21 ... lever, 22 ... engagement hole, 23 ... through hole, 25 ... unlocking cam hole, 26 ... engaging pin, 30 ... link rod, 31 ... shaft (lever shaft), 32 ... operation transmission rod, 33 ... shaft (rod shaft), 35 ... operating lever, 36 ... arm portion, 37 ... shaft, 40 ... stay, 41 ... shaft, 42 ... case, 43 ... edge, 50 ... hook, 51 ... spring.

Claims (5)

The back seat 3 is attached to the seat seat via the reclining device R so that the inclination angle can be adjusted, or the seat seat or the back seat is fixed to the vehicle body by a locking device, and the reclining device R or the locking device The operation lever 35 of the device is connected by an operation transmission rod 32 such as a rod, and the operation lever 35 is interposed between the reclining device R or the lock device and the operation transmission rod 32 in the clockwise direction or counterclockwise. A vehicle seat provided with a link rod 30 urged so as to always rotate in any one of rotational directions. The backrest seat 3 is attached to the seat with the tilt angle being adjustable via the reclining device R, and the reclining device R is attached to the seat side bracket 5 of the seat seat at the center of rotation of the backrest seat 3. A lock having an inclination adjusting arc gear 11 provided in an arc shape around the shaft 6 and a lock gear portion 10 provided on the dorsal side bracket 7 of the dorsal seat 3 and engaging with the inclination adjusting arc gear 11. A member 8 and a lever 21 for separating the lock gear portion 10 from the inclination adjusting arc gear 11 are provided, and the lever 21 is rotated in a case 42 provided at a predetermined position of the dorsal seat 3. The operation lever 35 and the operation transmission rod 32 that are freely provided are connected, and the operation transmission rod 32 and the lever 21 are always connected in either the clockwise direction or the counterclockwise direction. Vehicle seat provided with a biasing link rod 30 such that movement. 3. The link rod 30 according to claim 1 or 2, wherein one end of the link rod 30 is pivotally attached to the lever 21 by a shaft 31, and the other end is pivotally attached to the operation transmission rod 32 by a shaft 33. A vehicle seat in which a hook 50 is provided between 31 and the shaft 33 and closer to the shaft 31 from the middle, and a spring 51 is provided between the hook 50 and the seat side bracket 5 side. In claim 1 or claim 2 or claim 3, the link rod 30 is arranged such that the position of the shaft 33 is positioned in either the clockwise direction or the counterclockwise direction with respect to the axis 31; A vehicle seat arranged and arranged so that the operation transmission rod 32, the shaft 33, and the shaft 31 do not rotate beyond the line S arranged in the same straight line even when the distance between the lever 21 and the operation lever 35 is short. In claim 1 or claim 2, or claim 3 or claim 4, the lever 21 is pivotally attached to the dorsal bracket 7 by a shaft 17 at a longitudinal intermediate portion, and is attached to one end of the lever 21. An unlocking cam that engages and disengages the engaging hole 22 that engages the engaging portion 20 of the cam body 16 that presses the lock member 8 against the arc adjusting arc gear 11 and the engaging pin 26 of the locking member 8. A vehicle seat in which a hole 25 is formed and the link rod 30 is attached to the other end of the lever 21 by a shaft 31.

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