JP4858817B2 - Tip-up / dive-down automotive reclining seat - Google Patents

Description

  The present invention is provided with a reclining lock mechanism that can be locked and unlocked when the seat back is kept in a sitting position and the angle is adjusted or the seat cushion is tilted forward, and is locked when the seat cushion is flipped up to the seat back side. Further, the present invention relates to a tip-up / dive-down type reclining seat for an automobile that includes a tip-up lock mechanism that can be unlocked and that can be stored in a dive-down manner on the lower side of the vehicle body floor.

Conventionally, a tip-up lock mechanism that can raise the seat cushion to the seat back side has been provided, and in order to make it easy to use, the entire seat is secured by keeping the tip-up lock mechanism locked from the raised state of the seat cushion. For chip-up and dive-down type vehicles that can be dive-down stored from the upper side to the lower side of the floor, and that the tip-up lock mechanism can be unlocked from the dive-down stored state and the entire seat can be returned to the original seating position. A sheet is known (Patent Document 1).
JP2005-212554

  The tip-up / dive-down seat for automobiles does not have a reclining lock mechanism that can be locked and unlocked when the seat back is kept in the sitting position and the angle is adjusted or the seat cushion is moved forward. Attached to one side of the back, the striker is attached to the side panel of the vehicle body, and the latch is engaged with the striker to keep the seat back in the seating posture, so that the seat cushion can be lifted up to the seat back side. .

  In order to configure the tip-up / dive-down type automobile seat as a reclining seat, the tip-up lock mechanism can be operated separately from the reclining lock mechanism, as well as the tip-up lock mechanism when the reclining lock mechanism is unlocked. The mechanism can also be unlocked so that the entire seat can be stored in a dive down state, and both mechanisms can be held in an unlocked state so that the entire seat can be returned to the original sitting position from the dive down stored state, while the seat cushion is raised The entire seat may be configured to be able to be dive-down stored on the lower side of the vehicle body floor by holding the posture with the lock of the tip-up lock mechanism and unlocking the reclining lock mechanism.

  The problems to be solved by the present invention include both a reclining lock mechanism and a tip-up lock mechanism that can be unlocked so as to keep the seat back in a sitting posture and adjust the angle or move forward to the seat cushion side. The tip-up lock mechanism can be operated separately from the reclining lock mechanism. At the same time, when the reclining lock mechanism is unlocked, the tip-up lock mechanism can also be unlocked and the entire seat can be stored in a dive down state. Configure to return to posture. On the other hand, since the reclining lock mechanism is unlocked while keeping the seat cushion jumping posture locked by the tip-up lock mechanism, the entire seat is configured to be dive-down retractable on the lower side of the vehicle body floor.

  In addition, a tip-up lock mechanism is provided that can securely lock the seat cushion in the jumping posture and that can be unlocked when the seat cushion is flipped up.

  In addition, a stand leg that stands on the lower side of the vehicle body floor is provided on the front side of the cushion bracket, and the stand leg can be stored in conjunction with a seat cushion jumping up or a dive down of the entire seat. It is in place to be able to stand up in conjunction with the seating return of the entire seat.

In the invention according to claim 1 of the present application, the reclining lock mechanism that can be unlocked by rotating the operating shaft or locked by returning is provided between the base bracket and the lower side of the back bracket. The seat back is equipped with the rear side curved upward of the cushion bracket, pivotally attached to the lower part of the back bracket, and the stand leg that stands on the lower side of the vehicle body floor is provided on the front side of the cushion bracket. It consists of a seat cushion equipped with an uplock mechanism between the rear side of the cushion bracket and the back bracket,
The seat back is kept in the sitting position by locking the reclining lock mechanism, and the angle can be adjusted by unlocking the reclining lock mechanism. The seat cushion with the pivot of the cushion bracket as the fulcrum is seated by unlocking the tip up lock mechanism Bounce up to the back side, keep the raising position locked by the tip-up lock mechanism, and further, the entire seat with the seat cushion raised or the entire seat with the seat back folded forward can be dive-down stored on the lower side of the vehicle floor In the tip-up / dive-down automotive reclining seat configured in
The reclining lock unlocking mechanism has a link bar that can bend and stretch connected to the operating shaft of the reclining lock mechanism on the lower end side, and a braking link that is provided on the upper end side with a guide pin protruding sideways on the upper end side of the link bar on the middle part. A stopper pin for receiving and locking the lower end side of the braking link from below is provided on the plate surface so as to protrude sideways above the pivot axis of the cushion bracket,
A reclining link plate is mounted on the back bracket plate so as to be swingable by a support shaft on the rear side, and a guide hole through which the guide pin is inserted in an arc shape centering on the support shaft of the braking link. Provided on the plate surface, provided with an operation lever for pulling operation that is connected to the front side of the link plate with a cable wire on the back side of the seat back,
By pulling the actuating lever, the entire reclining link plate, braking link, link bar mechanism is pulled up to unlock the reclining lock mechanism, and by releasing the actuating lever pulling, the entire mechanism is lowered by its own weight, and the reclining lock mechanism Is assembled in a lockable manner,
The tip-up lock mechanism has a semi-circular arc at the rear edge of the cushion bracket centered on the pivot, and the notch teeth for the seat cushion seating position and the lifting position are located at the rear edge of the cushion bracket. A latch that is provided in the front-rear direction of a substantially semicircular arc shape and that has protrusion teeth that can be engaged or disengaged alternatively with the notch teeth of the cushion bracket on the lower side of the rear side. Mounted so that it can swing, and a cam with the lower side facing the lower rear side of the latch is mounted on the upper side so that it can swing on the same axis as the support shaft of the reclining link plate. A latching step that is regulated by contact is provided on the upper side of the rear side of the latch,
The tip-up lock unlocking mechanism has a recess on the upper side of the rear side of the latch that is deeper than the step edge of the locking step by at least the engagement margin between the notch teeth and the protruding teeth and allows the cam to swing.
A tip-up link plate is mounted on the rear side so as to be swingable integrally with the cam coaxially with the support shaft of the reclining link plate, and the link plate abuts against the guide pin of the brake link when the seat is seated. When the seat cushion tip is up, or when the reclining lock mechanism is unlocked from the seat cushion tip-up state, an opening hole is provided in the plate surface, which is connected to the front side of the link plate with a cable wire. An operating lever for pulling operation is provided on the front lower side of the seat cushion,
By pulling the actuating lever, the cam is moved to the recess of the latch to release the protruding teeth of the latch from the notch teeth of the cushion bracket. By releasing the actuating lever, the tip-up link plate, cam, and latch mechanism The whole is restored by its own weight, and the protrusion teeth of the latch are assembled so as to be able to mesh with the notch teeth of the cushion bracket.

  The invention according to claim 2 of the present application is adapted to an acute angle of an angle drawn by a line connecting the center of the cam spindle and the contact point of the cam with reference to a line connecting the center of the support shaft of the latch and the contact point of the cam. And a tip-up lock mechanism for setting the angle direction of the cam and maintaining the meshing state of the protrusion teeth of the latch and the notch teeth of the cushion bracket in the angle direction of the cam.

  The invention according to claim 3 of the present application includes a cam having a lower ellipse formed in a semi-elliptical shape, and includes a stepped portion of the locking step portion in addition to a locking step portion having a substantially J shape with which the lower side of the cam contacts. A chip provided with a substantially U-shaped recess that is deeper than the margin of engagement between the notch teeth and the protruding teeth and aligns with the lower side of the cam on the upper side of the rear side of the latch for allowing swinging and lifting of the latch An up-lock unlocking mechanism is provided.

  The invention according to claim 4 of the present application is provided with a stand leg portion pivotally attached to the lower front portion of the cushion bracket by a support shaft at the upper end, and the stand leg portion is biased by a spring in the storing direction with respect to the lower side of the seat cushion. In addition to supporting, one end of the wire is connected to the upper end side of the stand leg portion pivoted by the support shaft, and the other wire end is connected to the seat back side. Pulling in the direction, the stand leg pulling force is increased from strong to weak while the seat back is being moved forward or the seat cushion is being raised, and the stand leg pulling force is decreased from when the seat back is being returned or the seat cushion is being returned. It is characterized by being tension-supported by a cable wire that can be strongly converted.

  In the invention according to claim 1 of the present application, when the entire seat is in the seating posture and the reclining lock mechanism and the tip-up lock mechanism are in the locked state, the lower end side of the brake link is received by the stopper pin provided on the cushion bracket. In addition to being stopped, the guide pin of the braking link is located on the rear end side of the guide hole provided in the reclining link plate, so that the seating position of the entire seat is determined.

  When the operating lever provided at the lower front part of the seat cushion is pulled from the seating position of the entire seat, the tick-up link plate swings upward with the pivot as a fulcrum, and the cam also swings integrally. The lower side of the cam moves to a recess deeper than the latching step of the latch by at least the engagement allowance between the notch teeth and the projection teeth, and the projection teeth of the latch can be detached from the notch teeth of the cushion bracket so that the meshing state of each other Since it can be released, the seat cushion can be flipped up from the seating position to the relative side of the seat back with the pivot of the cushion bracket as a fulcrum.

  When operating the tip-up lock unlocking mechanism, the tip-up link plate abuts and escapes with the guide pin of the braking link through the opening hole, and the guide pin of the braking link is inserted into the guide hole of the reclining link plate. However, the guide pin of the brake link is not lifted upward by the link plate for tick-up, and therefore the reclining lock mechanism is not unlocked.

  When the seat cushion is flipped up and the tip-up actuating lever is released from the tension, the tip-up link plate, cam, and latch mechanism are moved down by their own weight, and the lower side of the cam contacts the latching step of the latch. Because of the contact, the protrusion teeth of the latch are kept in mesh with the notch teeth of the cushion bracket. As a result, the seat cushion is kept in a jumping posture by locking the tip-up lock mechanism.

  On the contrary, when the seat cushion is returned to the seat cushion, the tip-up lock mechanism can be unlocked by pulling the tip-up actuating lever, so that the seat cushion can be moved forward to the seating position.

  When the entire seat is in the sitting position and the reclining lock mechanism and tip-up lock mechanism are in the locked state, when the operating lever provided on the upper back of the seat back is pulled, the reclining link plate rotates the support shaft. Swings upward on the fulcrum. Along with this, the guide pin of the braking link is located at the rear end side of the guide hole provided in the reclining link plate, and is in contact with the opening hole of the tip-up link plate. The link plate also swings upward.

  When the reclining link plate swings upward, the guide pin of the braking link is lifted upward by the guide hole, and the link bar that can be bent and stretched connected to the operating shaft of the reclining lock mechanism is pulled upward. Thus, the reclining lock mechanism is unlocked and the tip-up link plate is also swung upward as described above, so that the tip-up lock mechanism can also be unlocked.

  The angle of the seat back can be adjusted by unlocking the reclining lock mechanism and the tip-up lock mechanism. After adjusting the angle of the seat back, if the tension of the reclining operating lever is released, the reclining link plate, braking link, link bar mechanism as well as tip up link plate, cam, latch mechanism as a whole Since the vehicle returns with its own weight, both mechanisms can be locked and the entire seat can be kept in the sitting position.

  In addition, the seat back can be moved forward and the entire seat can be dive-down stored on the lower side of the vehicle body floor. In this case, both the reclining link plate, braking link, and link bar mechanisms, and the tip-up link plate, cam, and latch mechanisms cannot be moved down due to their own weight, so both mechanisms are unlocked. To be kept. When dive-down storage of the entire seat, if the operator holds the reclining operation lever by hand and pushes the entire seat forward to a certain extent, it is replaced with the tip-up operation lever and held to the lower part of the vehicle floor. You can lower it.

  When returning the entire dive-down stored seat to the sitting position, the reclining lock mechanism and tip-up lock mechanism are unlocked, so if the operator lifts the seat back by holding the reclining operation lever by hand, The seat cushion can be easily returned to the sitting position from the seat back.

  When the seat cushion is locked in the flip-up state by the tip up lock mechanism, the stopper pin protruding from the cushion bracket is separated from the lower side of the brake link, the brake link is lowered by its own weight, and the guide pin of the brake link is used for reclining. It moves to the front end side of the guide hole provided in the link plate.

  When the reclining actuating lever is pulled from the tip up state of the seat cushion so that it can be moved forward with the seat back and stored in the dive down position, the reclining link plate swings upward and is positioned on the front end side of the guide hole. Since the guide pin of the braking link is pulled upward by the reclining link plate, the reclining lock mechanism can be unlocked as described above.

  Even if the reclining lock mechanism is unlocked, the tip-up link plate is provided with an opening hole that can come into contact with the guide pin of the braking link when the reclining lock mechanism is unlocked from the tip-up state of the seat cushion. Therefore, the tip-up link plate does not swing, and the tip-up lock mechanism is kept locked. Thereby, since the tip-up lock mechanism is kept in the locked state, the entire seat can be stored in a dive-down manner by being tilted forward together with the seat back without falling down.

  For dive down storage of the entire seat, if the operator holds the reclining operation lever by hand and pushes the entire seat forward to a certain extent as described above, it is replaced with the tip up operation lever and the body floor Just lift it down to the bottom. Thereby, the chip-up lock mechanism can also be unlocked and the entire sheet can be stored in a dive-down manner.

  In the invention according to claim 2 of the present application, the acute angle drawn by the line connecting the cam spindle center and the cam contact point with respect to the line connecting the cam spindle center of the latch and the cam contact point. Therefore, even if the seat cushion is flipped up, even if the seat cushion is flipped up, the cam has a stick-like action against the latching step of the latch and the latch is pressed by the cam. And the notch teeth of the cushion bracket can be securely maintained.

  In the invention according to claim 3 of the present application, in addition to the locking step portion having a substantially J shape with which the lower side of the cam formed in a semi-elliptical shape comes into contact, a notch tooth and a protruding tooth are formed from the step edge of the locking step portion. Since the depression on the rear side of the latch is provided on the upper side of the rear side of the latch, which is deeper than the engagement allowance and is aligned with the lower side of the cam, when the cam is moved to the depression of the latch by the lever pulling operation, The lower side fits into the recess of the latch, and the cam raises the latch significantly, so that the protruding tooth of the latch can be reliably released from the meshed state with the notch tooth of the cushion bracket by pulling the lever.

  In the invention according to claim 4 of the present invention, the stand leg is biased and supported by the spring in the storing direction with respect to the lower side of the seat cushion, and the one wire end is located on the upper end side relative to the pivot position of the stand leg by the support shaft. The other end of the wire is connected to the seat back side and is pulled and supported by a cable wire that can convert the strength of the tensile force, so the stand leg can be stored in conjunction with the seat cushion jumping up or the entire seat dive down. It is possible to stand up in synchronization with the seat cushion or the seating return of the entire seat.

As shown in FIG. 1, the illustrated embodiment includes a reclining lock mechanism 3 provided between a lower side of a back bracket serving as a side frame of the seat back 1 and a base bracket 2 erected on the upper side f ₁ of the vehicle body floor F. The seat back 1 is configured to stand and be held on the upper side f ₁ of the vehicle body floor F. As this reclining lock mechanism, a known reclining lock mechanism (for example, see Japanese Patent Application Laid-Open No. 2004-173922) that can be unlocked by rotating the operating shaft 4 or locked by returning.

The seat cushion 5 is pivotally attached at the rear side of the cushion bracket serving as a side frame to the lower portion of the back bracket by the pivot 6 and at the upper end thereof is pivotally attached to the front lower portion of the cushion bracket by the support shaft 7a. the provided, and is configured to maintain the sitting posture since the lower end of the stand leg portion 7 in the lower side f ₂ of the vehicle body floor F is engaged with the seat 7b installed at the rear near to standing obliquely.

  In the reclining seat for automobiles, as shown in FIGS. 2 and 3, a reclining lock unlocking mechanism for unlocking the reclining lock mechanism 3 by rotating the operating shaft 4 is assembled. This reclining lock unlocking mechanism is configured to receive a link bar 80 that can be bent and stretched by two links, a brake link 82 provided with a guide pin 81 projecting sideward on the upper end side, and a lower end side of the brake link 82 from below. A stopper pin 83 to be locked, a reclining link plate 84, and an operating lever 85 for pulling operation (see FIG. 1) are provided.

  The link bar 80 is attached so that the lower end side of the lower bar 80a is connected to the operating shaft 4 of the reclining lock mechanism 3, and the upper bar 80b extends upward. As shown in FIG. 4, the brake link 82 is supported at the upper end of the upper bar 80b so as to be swingable by a support shaft 80c, with the upper side protruding the guide pin 81 facing upward and the lower side facing downward. It is mounted toward the stopper pin 83 that receives and locks. The stopper pin 83 is provided on the plate surface on the rear side so as to protrude laterally above the pivot 6 of the cushion bracket 5 ′.

  The reclining link plate 84 has a substantially triangular shape with an emphasis on the lower side, and the rear side is mounted on the plate surface of the back bracket 1 ′ by a support shaft 84 a so as to be swingable. On the plate surface of the link plate 84, a guide hole 84 b that has an arc shape centering on the support shaft 80 c of the braking link 82 and through which the guide pin 81 is inserted is provided.

  Since the reclining operation lever 85 is connected to the front side of the link plate 84 by the cable wire 86, the reclining operation lever 85 is provided on the back side of the seat back 1. According to the operation lever 85, the occupant can reach the hand and pull the reclining lock unlocking mechanism, and can adjust the angle of the seat back or move it forward in one motion.

  The reclining lock unlocking mechanism unlocks the reclining lock mechanism 3 by pulling up the entire mechanism of the link plate 84, the brake link 82, and the link bar 80 by rotating the operating lever 85 and rotating the operating shaft 4. . Further, when the tension is released from the operation lever 85, the entire mechanism of the link plate 84, the brake link 82, and the link bar 80 is lowered by its own weight, so that the operation shaft 4 is rotated back and assembled so as to lock the reclining lock mechanism 3. It has been.

  In the reclining seat for automobiles, a tip up lock mechanism is assembled between the back bracket 1 'and the cushion bracket 5'. In the tip-up lock mechanism, the rear upper edge is formed in a substantially semicircular shape with the pivot 6 as the center, and the notch tooth 90a for the seating position and the notch tooth 90b for the jumping position are provided on the rear upper edge. Based on the cushion bracket 5 ', a latch 91 and a cam 92 are provided on the plate surface of the back bracket 1'.

  The latch 91 is pivotally attached to the plate surface of the back bracket 1 ′ with a support shaft 91 a so that the latch 91 can swing upward from the rear side. The latch 91 is provided with a protruding tooth 91b on the lower side of the rear side, which can be engaged with or detached from the cutout teeth 90a and 90b. The protruding teeth 91b are formed of two protrusions on the front and rear sides so as to keep positive engagement with the notched teeth 90b for the jumping position.

  The above-described notched teeth 90a at the seating position are formed by notches having a length necessary for receiving the protruding teeth 91b of the latch 91 at the seating return position of the seat cushion and adjusting the angle of the seat cushion rearward. In the illustrated embodiment, only the length of the notch used for adjusting the angle of the seat cushion rearward is provided, but the notched tooth (not shown) used for adjusting the angle of the seat cushion forward is used as the notch tooth at the seating position. It can also be provided between the notch teeth 90b for the jumping position on the front side of 90a.

  The cam 92 has a lower side facing the upper side of the rear side of the latch 91 and is coaxially supported by a support shaft 84a that supports the reclining link plate 84 on the plate surface of the back bracket 1 'so that the upper side is pivoted upward. It is attached so that it can swing.

  As shown in FIG. 5, the latch 91 is provided with a locking step 91 c that contacts and receives the lower side of the cam 92 on the upper side of the rear side. Since the lower side of the cam 92 abuts against the latching step 91c of the latch 91, the cam 8 acts on the latch 91 as a stick, so that the protruding tooth 91b of the latch 91 is replaced with the notched teeth 90a, 90b of the cushion bracket 5 ′. And can be kept in mesh.

The angle direction of the cam 92 is based on the line L ₁ connecting the support shaft center O ₁ of the latch 91 and the contact point P of the cam 92 as shown in FIG. 6 because of the relationship with the locking step 91 c of the latch 91. The angle θ drawn by a line L ₂ connecting the support shaft center O ₂ of the cam 92 and the contact point P of the cam 92 is set to be maintained at an acute angle. Since the reference line O ₁ is formed with the bottom surface of the locking step portion 91 c approaching the projection tooth 91 b, it is preferable to set the reference line O ₁ to be a diagonal line with a downward slope toward the rear side from the support shaft center O ₁ of the latch 91. .

  In the illustrated embodiment, the cam 92 has a semi-elliptical shape on the lower side. Due to the lower shape of the cam 92, the latching step 91c of the latch 91 is formed to have a substantially J-shape with which the cam 92 abuts. The substantially J-shaped bottom surface is formed into a curved surface that can receive at least half of the lower side of the cam 92, so that the lower side of the cam 92 can be stably received by contacting the locking step 91c of the latch 91. .

  The tip-up lock mechanism is provided with a recess 91d (see FIG. 5) for allowing the cam 92 to swing on the upper side of the rear side of the latch 91, a tip-up link plate 93, and a pulling operation lever 94 ( 1) is provided in the back bracket 1 ', the tip-up lock unlocking mechanism is assembled. The recessed portion 91d of the latch 91 is recessed at least as much as the meshing allowance of each tooth 90a, 90b, 91b from the stepped edge of the locking stepped portion 91c so as to maintain a clearance space where the protruding teeth 91b are disengaged from the notched teeth 90a, 90b. Should be provided.

  In the illustrated embodiment, the recess 91d of the latch 91 is substantially deeper than the engagement margin between the notched teeth 90a, 90b and the protruding teeth 91b than the step edge of the locking step 91c and is aligned with the lower side of the cam 92. It is formed so as to exhibit a letter shape (see FIG. 5).

  The recess 91d of the latch 91 allows the cam 92 to swing away from the latching step 91c of the latch 91, and the lower side of the cam 92 is fitted into the latch 91 so that the latch 91 is located on the rear side of the cushion bracket 5 ′. It is formed so as to swing upward and swing from the top. By swinging the cam 92, the latch 91 is pulled up until the protruding teeth 91b of the latch 91 are reliably released from the meshed state with the notched teeth 90a and 90b.

  The swinging latch 91 is supported by a presser plate 95 (see FIG. 3) held by the pivot 6 of the cushion bracket 5 ′ and the support shaft 91 d of the latch 91 so as to be stably swingable.

  The tip-up link plate 93 is attached so as to swing integrally with the cam 92 coaxially with the support shaft 84a that supports the reclining link plate 84 on the plate surface of the back bracket 1 '. The tip-up link plate 93 is provided with a substantially fan-like shape that spreads with the support portion of the support shaft 84a as a base and the portion is directed forward.

  The reclining link plate 84, the cam 92, and the tip-up link plate 93 are mounted so that the reclining link plate 84 is supported by the support shaft 84a so as to be swingable on the axis of the support shaft 84a. . Since the cam 92 and the tip-up link plate 93 are fixed on the same axis as the support shaft 84a, the support shaft 84a is inserted into the plate surface of the back bracket 5 'and is rotatably held. The plate 93 and the cam 92 are provided so as to be swingable integrally.

  As shown in FIG. 7, the tip-up link plate 93 includes an opening edge 93a that contacts the guide pin 81 of the brake link when the entire seat is seated, and a guide pin 81 of the brake link when the seat cushion is tipped up. An opening hole comprising an opening edge 93b that makes contact and escape and an opening edge 93c that makes contact and escape from the guide pin 81 of the brake link when the reclining lock mechanism is unlocked from the tip-up state of the seat cushion is provided on the plate surface. Yes.

  An operating lever 94 for pulling operation is connected to the tip-up link plate 93 via a wire cable 96. The operating lever 94 is attached to the front lower portion of the seat cushion 5 as acting on the link plate 93 for tip-up because the occupant handles it and pulls it upward (see FIG. 1). According to the operation lever 94, the passenger can reach and pull the tip-up link plate 93, and the seat cushion 5 can be lifted up in one motion.

  The tip-up lock unlocking mechanism unlocks the tip-up lock mechanism by swinging the link plate 93 and the cam 92 and pulling up the latch 91 from the cushion bracket 5 ′ by pulling the operating lever 94. Further, when the tension is released from the operating lever 94, the entire mechanism of the link plate 93, the cam 92, and the latch 91 is lowered by its own weight, so that the tip-up lock mechanism is assembled to be locked.

  As shown in FIG. 8, the stand leg portion 7 described above connects one spring end to the upper end side from the pivot position by the support shaft 7 a and connects the other spring end to the front side of the cushion bracket (not shown). The lower part of the seat cushion is stretched and supported by the tension spring 10 by a coil spring or a torsion coil spring with the lower part of the seat cushion as the storage direction. The stand leg 7 is connected to the seat back side by a wire cable 11 that connects the one-wire end 11a to the upper end side of the pivoting position by the support shaft 7a and extends rearward on the seat cushion side.

  On the seat back side, as shown in FIG. 9a, the other wire end 11b is inserted and supported by a latching piece 12 standing at an appropriate position of the back frame. The wire end 11b on the seat back side is formed as a spherical end stop, and the wire axis is inserted through the plate surface of the latching piece 12, and is attached so as to be displaced from the latching piece 12 in the protruding direction. As the cable tube 11c, a cable tube having a full length that can be expanded and contracted by a compensator is used.

  The wire cable 11 pulls the stand leg portion 7 in the standing leg direction against the tension spring 10 from the seat cushion sitting position shown in FIG. 9a to the position just before the seat cushion jumping shown in FIG. 9b. It is wired so that the tensile force can be changed in strength so as to release the tension of the stand leg portion 7 from the middle of the seat cushion as shown by 9c to the upper position.

  The cable wire 11 allows the stand leg 7 to be stored in conjunction with the raising of the seat cushion or the dive down of the entire seat, and to be able to stand out in conjunction with the seat cushion or the entire seating return. .

  In the tip-up / dive-down type reclining seat for an automobile configured as described above, when the seat is entirely seated (see FIG. 1) and the reclining lock mechanism and the tip-up lock mechanism are in the locked state (see FIG. 2). The lower end side of the braking link 82 is received and locked by a stopper pin 83 provided on the cushion bracket 5 ′. Further, since the guide pin 81 of the braking link 82 is located on the rear end side of the guide hole 84b provided in the reclining link plate 84, the seating position of the entire seat is determined.

  When tipping up the seat cushion 1 from the seating position of the entire seat, as shown in FIG. 10, when the operating lever 94 provided at the lower front portion of the seat cushion 5 'is pulled, the link plate 93 for tick-up is supported. The cam 92 swings integrally with the shaft 84a as a fulcrum, and the lower side of the cam 92 moves from the locking step 91c of the latch 91 toward the recess.

  When the lower side of the cam 92 moves from the locking step 91c of the latch 91 to the recess 91d, the lower side of the cam 92 fits with the recess 91d of the latch 91 as shown in FIG. In the fitted state of the cam 92, the recess 91d of the latch 91 is provided deeper than the engagement margin between the notched tooth 90a and the protruding tooth 91b from the step edge of the locking step 91c. Is greatly increased. For this reason, the protruding teeth 91d of the latch 91 can be reliably released from the meshed state with the notched teeth 90a of the cushion bracket 5 '.

  When the operator lifts the seat cushion upward from the front side while keeping his hand on the operation lever 94 from the unlocked state of the tip-up lock, the protruding teeth 91b of the latch 91 are moved to the cushion bracket 5 as shown in FIG. 12a. Since it is kept in the disengaged state from the 'notched teeth 90a', the pivot 6 of the cushion bracket 5 'is used as a fulcrum, and the seat cushion 5 is flipped up from the seating position to the relative side of the seat back 1 as shown in FIGS. 12b and 12c. It is done.

  When the tip-up lock unlocking mechanism is operated, the tip-up link plate 93 comes into contact with and escapes from the guide pin 81 of the braking link 82 and the opening edge 93b (see FIG. 12a). Since the link plate 93 for tic-up is not pulled up, the reclining lock mechanism is not unlocked.

  When the tip-up actuating lever 94 is released from the lifted state of the seat cushion 5 (see FIG. 12c), the entire mechanism of the tip-up link plate 93, cam 92, and latch 91 is self-weighted as shown in FIG. Thus, the lower side of the cam 92 comes into contact with the locking step 91c of the latch 91, and the protruding teeth 91b of the latch 91 are kept in mesh with the notched teeth 90b of the cushion bracket 5 '. Thereby, the seat cushion 5 is kept in the jumping posture by locking the tip-up lock mechanism.

  When the seat cushion 5 that is flipped up is seated back, the tip-up lock mechanism can be unlocked by pulling the tip-up operating lever 94 in the same manner as described above, so that the seat cushion can be moved forward to the seating position. .

  When the reclining lock mechanism is unlocked when the entire seat is in the sitting position and both mechanisms are locked (see FIG. 1), the operator pulls the operating lever 85 provided on the upper back of the seat back 1. When operated, the reclining link plate 84 swings upward about the support shaft 84a as shown in FIG. Accordingly, since the guide pin 81 of the braking link 82 is located on the rear end side of the guide hole 84b provided in the reclining link plate 84, it contacts the opening hole 93a of the tip-up link plate 93. Therefore, the tip-up link plate 93 also swings upward.

  When the reclining link plate 93 swings upward, the guide pin 81 of the braking link 82 is lifted upward through the guide hole 84a as shown in FIG. 15, and is connected to the operating shaft 4 of the reclining lock mechanism on the lower end side. The link bar 80 that can bend and stretch is pulled upward. As a result, the reclining lock mechanism is unlocked and the tip-up link plate 93 swings upward as described above, so that the tip-up lock mechanism can also be unlocked.

  By opening the reclining lock mechanism and the tip-up lock mechanism, the angle of the seat back 1 can be adjusted backward as shown in FIG. 16a. When the tension of the reclining operation lever 85 is released after adjusting the angle of the seat back 1, as shown in FIG. 16b, the entire mechanism of the reclining link plate 84, the brake link 82, the link bar 80, and the tip up Since the entire mechanism of the link plate 93, the cam 92, and the latch 91 is returned and returned by its own weight, the reclining lock mechanism and the tip-up lock mechanism can be locked, and the entire seat can be kept in the seating posture.

Also, the reclining lock mechanism, the unlocking of the tip-up lock mechanism, FIG. 17a, also as dive down housed in the lower side f ₂ the entire sheet by ahead of the seat back 1 of the vehicle floor F as shown in Figure 17b it can. In this case, as shown in FIGS. 18a and 18b, the entire mechanism of the reclining link plate 84, the braking link 82 and the link bar 80, and the entire mechanism of the tip plate link plate 93, the cam 92 and the latch 91 are provided. Therefore, the reclining lock mechanism and the tip-up lock mechanism are kept unlocked.

In dive down storage of the entire seat, if the operator holds the reclining operation lever 85 by hand and moves the entire seat forward to a certain extent, it is replaced with the tip up operation lever 94 and the lower part of the vehicle body floor F. better to be lowered have to part f _2.

  When returning the entire dive-down stored seat to the seating position, the reclining lock mechanism and tip-up lock mechanism are in the unlocked state, so that the operator can lift the seat back 1 by holding the reclining operating lever 85 by hand. Thus, as shown in FIGS. 19a and 19b, the seat cushion 5 can be easily returned to the sitting posture from the seat back 1 (see FIG. 1).

  When the seat cushion 5 is locked in the flip-up state by the tip-up lock mechanism, the stopper pin 83 protruding from the cushion bracket 5 ′ is separated from the lower side of the braking link 82 as shown in FIG. Therefore, the guide pin 81 of the braking link 82 has moved to the front end side of the guide hole 84b provided in the reclining link plate 84.

  From the tip-up state of the seat cushion 5, when the reclining operation lever 85 is pulled so as to be moved forward with the seat back 1 and stored in the dive down, the reclining link plate 84 swings upward as shown in FIG. 21. Since the guide pin 81 of the braking link 82 located on the front end side of the guide hole 84b is pulled upward by the reclining link plate 84, the reclining lock mechanism can be unlocked as described above.

  Even when the reclining lock mechanism is unlocked, the tip-up link plate 93 is brought into contact with the guide pin 81 of the brake link 82 and released from the tip-up state of the seat cushion 5 as the reclining lock mechanism is unlocked. Since the possible opening edge 93c is provided so as to extend upward, the tip-up link plate 93 does not swing, so that the tip-up lock mechanism is kept locked.

  As a result, since the tip-up lock mechanism is kept locked, the seat cushion 5 shown in FIGS. 22a and 22b can be moved forward together with the seat back 1 without falling down, and the entire seat is dive-down as shown in FIG. Can be stored.

When dive-down storage of the entire seat is performed, if the operator holds the reclining operation lever 85 by hand in the same manner as described above and moves the entire seat forward to a certain extent, it is replaced with the tip-up operation lever 94. it lowered have to lower portions f ₂ of the vehicle floor F. Thereby, the chip-up lock mechanism can also be unlocked and the entire sheet can be stored in a dive-down manner.

  As described above, even if the reclining lock mechanism is unlocked by the pulling operation of the operating lever 85, the tip up lock mechanism is maintained in the locked state. The angle can also be adjusted.

While changing the posture of the entire seat as described above, the stand leg 7 is attached to the seat cushion in conjunction with the jumping of the seat cushion 5 (see FIGS. 12b and 12c) or the dive down of the entire seat (see FIGS. 17a and 17b). can be stored at the bottom side, of the entire seated back (FIG. 19a, FIG. 19b refer) is standing out on the lower side f ₂ the stand legs 7 of the vehicle floor F in conjunction to back seat or the seat cushion 5 which splashed be able to.

  Each of the above-described mechanisms has been described based on the one provided on the cushion bracket and the back bracket on one side, but each mechanism is provided on the cushion bracket and the back bracket on both sides. Each of the mechanisms on both sides can be configured to be unlocked in synchronization by two continuous wire cables from the reclining operating lever 85 and the tip-up operating lever 94.

1 is a side view showing a tip-up / dive-down automobile reclining seat according to the present invention. FIG. 2 is a side view showing a reclining lock mechanism, a reclining lock unlocking mechanism, a tip up lock mechanism, and a tip up lock unlocking mechanism provided in the reclining seat for an automobile shown in FIG. 1. It is a front view which shows each mechanism of FIG. It is a side view which shows the brake link with a link bar and a guide pin assembled | attached to the reclining lock unlocking mechanism of FIG. It is a side view which shows the latch assembled | attached to the chip | tip up lock mechanism of FIG. It is explanatory drawing which shows in principle the locking state by the chip | tip up lock mechanism of FIG. It is a side view which shows the link plate assembled | attached to the chip | tip lock unlocking mechanism of FIG. It is a side view which shows the stand leg part with which the reclining seat for motor vehicles of FIG. 1 is equipped. It is explanatory drawing which shows the tension | pulling state of the stand leg part by the wire cable of FIG. 8 on the seat back side. It is explanatory drawing which shows the state in the middle of tension release of the stand leg part by the wire cable of FIG. 8 on the seat back side. It is explanatory drawing which shows the tension release state of the stand leg part by the wire cable of FIG. 8 on the seat back side. It is explanatory drawing which shows the unlocking movement of the chip | tip lock mechanism of FIG. It is explanatory drawing which shows the unlocking state of the chip | tip up lock mechanism of FIG. FIG. 12 is an explanatory view showing the seat cushion that is being lifted up by unlocking the tip-up lock mechanism of FIG. 11. It is a side view which shows the reclining seat for motor vehicles of FIG. 1 in the middle of the raising of a seat cushion. It is a side view which shows the reclining seat for motor vehicles of FIG. 1 in the final raising state of a seat cushion. It is explanatory drawing which shows the locking return state of the chip | tip up lock mechanism of FIG. 12a. It is explanatory drawing which shows the unlocking movement of the reclining lock mechanism of FIG. It is explanatory drawing which shows the unlocking state of the reclining lock mechanism of FIG. It is a side view which shows the reclining seat for motor vehicles of FIG. 1 in the angle adjustment state by tilting back of a seat back. It is a side view which shows the reclining seat for motor vehicles of FIG. 1 in the dive down accommodation process. It is a side view which shows the reclining seat for motor vehicles of FIG. 1 in a dive down accommodation state. It is explanatory drawing which shows the reclining lock unlocking mechanism and the chip up lock unlocking mechanism of the reclining seat for motor vehicles in the way of the dive down storing of FIG. 17a. It is explanatory drawing which shows the reclining lock unlocking mechanism of the reclining seat for motor vehicles in the dive down accommodation state of FIG. 17b, and a chip up lock unlocking mechanism. It is explanatory drawing which shows the seating-return initial procedure of the reclining seat for motor vehicles in the dive down storing state of FIG. 17b. It is explanatory drawing which shows the reclining seat for motor vehicles of FIG. 19a in the way of seating return. It is explanatory drawing which shows the locking state of the chip | tip up lock mechanism of FIG. It is explanatory drawing which shows the tip-up lock mechanism of FIG. 20 in the unlocking state of a reclining lock. It is explanatory drawing which shows the chip-up lock mechanism of FIG. 21 in the dive down accommodation process of the whole sheet | seat. FIG. 22B is a side view showing a state where the entire sheet is dive-down stored by the chip-up lock mechanism of FIG. 22A. It is explanatory drawing which shows the chip | tip up lock mechanism of FIG. 21 in the state just before the dive down accommodation of the whole sheet | seat. 12c is a side view showing an angle adjustment state by tilting down the entire seat after the seat cushion of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat back 1 'Back bracket 2 Base bracket 3 Reclining lock mechanism 4 Acting shaft of reclining lock mechanism 5 Seat cushion 5' Cushion bracket 6 Cushion bracket pivot 7 Stand leg 80 Link bar 81 Guide pin 82 Braking link 83 Stopper pin 84 Reclining link plate 84a Reclining link plate support shaft 84b Reclining link plate guide hole 85 Reclining actuating lever 86 Reclining wire cable 90a, 90b Notched teeth 91 Latch 91a Latch support shaft 91b Latch projection teeth 91c Locking step 91d Latch recess 92 Cam 93 Tip-up link plate 93a to 93c Opening the chip-up link plate Mouth hole 94 Tip-up actuating lever 95 Tip-up wire cable 10 Stand leg tension spring 11 Stand leg wire cable O ₁ Latch center O ₂ Cam pivot center P Cam contact point L ₁ Latch line connecting the centers of the support shaft and the contact point of the cam and shaft center of the line L ₂ cam connecting the contact point of the cam

Claims (4)

A seat back provided between a base bracket standing on the upper side of the vehicle body floor and a lower side of the back bracket and a cushion bracket that can be unlocked by rotating the operating shaft or locked by returning. The rear side that curves to the lower part of the back bracket is pivotally attached to the lower side of the back bracket, and the stand leg that stands on the lower side of the vehicle body floor is provided on the front side of the cushion bracket, and the tip-up lock mechanism is connected to the rear side of the cushion bracket. It consists of a seat cushion provided between the back brackets,
The seat back is kept in the sitting position by locking the reclining lock mechanism, and the angle can be adjusted by unlocking the reclining lock mechanism. The seat cushion with the pivot of the cushion bracket as the fulcrum is seated by unlocking the tip up lock mechanism Bounce up to the back side, keep the raising position locked by the tip-up lock mechanism, and further, the entire seat with the seat cushion raised or the entire seat with the seat back folded forward can be dive-down stored on the lower side of the vehicle floor In the tip-up / dive-down automotive reclining seat configured in
The reclining lock unlocking mechanism has a link bar that can bend and stretch connected to the operating shaft of the reclining lock mechanism on the lower end side, and a braking link that is provided on the upper end side with a guide pin protruding sideways on the upper end side of the link bar on the middle part. A stopper pin for receiving and locking the lower end side of the braking link from below is provided on the plate surface so as to protrude sideways above the pivot axis of the cushion bracket,
A reclining link plate is mounted on the back bracket plate so as to be swingable by a support shaft on the rear side, and a guide hole through which the guide pin is inserted in an arc shape centering on the support shaft of the braking link. Provided on the plate surface, provided with an operation lever for pulling operation that is connected to the front side of the link plate with a cable wire on the back side of the seat back,
By pulling the actuating lever, the entire reclining link plate, braking link, link bar mechanism is pulled up to unlock the reclining lock mechanism, and by releasing the actuating lever pulling, the entire mechanism is lowered by its own weight, and the reclining lock mechanism Is assembled in a lockable manner,
The tip-up lock mechanism has a semi-circular arc at the rear edge of the cushion bracket centered on the pivot, and the notch teeth for the seat cushion seating position and the lifting position are located at the rear edge of the cushion bracket. A latch that is provided in the front-rear direction of a substantially semicircular arc shape and that has protrusion teeth that can be engaged or disengaged alternatively with the notch teeth of the cushion bracket on the lower side of the rear side. Mounted so that it can swing, and a cam with the lower side facing the lower rear side of the latch is mounted on the upper side so that it can swing on the same axis as the support shaft of the reclining link plate. A latching step that is regulated by contact is provided on the upper side of the rear side of the latch,
The tip-up lock unlocking mechanism has a recess on the upper side of the rear side of the latch that is deeper than the step edge of the locking step by at least the engagement margin between the notch teeth and the protruding teeth and allows the cam to swing.
A tip-up link plate is mounted on the rear side so as to be swingable integrally with the cam coaxially with the support shaft of the reclining link plate, and the link plate abuts against the guide pin of the brake link when the seat is seated. When the seat cushion tip is up, or when the reclining lock mechanism is unlocked from the seat cushion tip-up state, an opening hole is provided in the plate surface, which is connected to the front side of the link plate with a cable wire. An operating lever for pulling operation is provided on the front lower side of the seat cushion,
By pulling the actuating lever, the cam is moved to the recess of the latch to release the protruding teeth of the latch from the notch teeth of the cushion bracket. By releasing the actuating lever, the tip-up link plate, cam, and latch mechanism A tip-up / dive-down type reclining seat for an automobile, wherein the whole is restored by its own weight and the protruding teeth of the latch are assembled so as to be able to mesh with the notched teeth of the cushion bracket.   Based on the line connecting the center of the latch spindle and the contact point of the cam, the angle of the cam is set according to the acute angle of the angle drawn by the line connecting the center of the support shaft of the cam and the contact point of the cam. 2. A tip-up / dive-down type reclining seat for an automobile according to claim 1, further comprising a tip-up lock mechanism for maintaining the meshing state of the protruding teeth of the cushion bracket and the notch teeth of the cushion bracket in the angular direction of the cam. .   A cam having a semi-elliptical shape on the lower side is provided, and in addition to a locking step portion having a substantially J shape with which the lower side of the cam abuts, meshing between the notch teeth and the protruding teeth from the step edge of the locking step portion It is provided with a tip-up lock unlocking mechanism in which a recessed portion having a substantially U shape that is deeper than that and aligned with the lower side of the cam is provided on the upper side of the rear side of the latch for allowing and lifting the latch. The tip-up / dive-down automobile reclining seat according to claim 1 or 2. It has a stand leg pivotally attached to the front lower part of the cushion bracket with a support shaft at the upper end, and the stand leg part is urged and supported in the storage direction with respect to the lower side of the seat cushion by a spring, and the end of one wire is supported Connected to the upper end side of the stand leg part pivoted by the other end, the other wire end is connected to the seat back side, and normally the stand leg part is pulled against the spring in the direction of the standing leg, The tension force of the stand leg is changed from strong to weak while the seat cushion is being raised, and the tension force of the stand leg is converted from weak to strong while the seat back is being returned or the seat cushion is being returned. The tip-up / dive-down automobile reclining seat according to claim 1, wherein

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