JP6522460B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat. More particularly, the present invention relates to a vehicle seat which can be stored and moved so that the seat cushion can be lifted forward from the use position on the vehicle body and the seat back can be moved forward to the empty space after the bounce of the seat cushion.

  2. Description of the Related Art Conventionally, there is known a vehicle seat capable of expanding a rear space by jumping up a seat cushion to the front and moving the seat back forward to the vacant space (Patent Document 1) ). Specifically, the seat cushion is hinged at its front lower portion on the floor panel so that it can be flipped forward around the connecting portion. Further, the seat back is connected at its lower part to the floor panel via a four-bar linkage, and can be moved forward by the link motion of the link.

JP 2004-136874 A

  In the above-mentioned prior art, the seat cushion and the seat back have to be moved forward and backward separately, and the operability is poor. The present invention has been made as a solution to the above problem, and the problem to be solved by the present invention is to facilitate the operation of moving the seat cushion and the seat back back and forth in separate operations. It will be done.

  In order to solve the above-mentioned subject, the vehicle seat of the present invention takes the following measures.

  According to a first aspect of the present invention, there is provided a vehicle seat capable of storing and moving, wherein the seat cushion is raised forward from the use position on the vehicle body and the seat back is moved forward to the empty space after the raising of the seat cushion. It has an interlocking structure which interlocks the movement of one with the movement of the other in at least one of the storage movement of the seat back and the seat cushion and / or the movement of movement back from the storage.

  According to the first aspect of the present invention, at least one of the storage movement of the seat cushion and the seat back, and the movement of returning them from the storage can be performed by a simple operation of moving either one.

  The second invention has the following configuration in the first invention described above. The seat cushion is hinged on the vehicle body so as to be able to rotate up and down, and the seatback is linked so as to be movable back and forth on the vehicle body by a four-bar linkage, and either movement between the seat cushion and the seatback Is linked to the other transmission link.

  According to the second aspect of the present invention, the seat cushion and the seat back can be stably operated with movements of one degree of freedom. Further, by connecting the seat cushion and the seat back to each other by the transmission link, both the storage movement and the movement from the storage back can be performed in a smooth manner without being caught by each other.

  The third invention is the following configuration in the above-described second invention. The transmission link is rotatably pin-connected to the seat cushion side member and the seat back side member.

  According to the third aspect of the invention, the transmission link is configured to be less susceptible to bending loads, and both motions can be performed between the two without providing an absorbing structure such as a long hole in both the seat cushion and the seat back. A transmission structure that can be appropriately transmitted can be simply configured.

FIG. 2 is a side view schematically showing an initial state of the vehicle seat of Example 1; It is a side view which represented the storing state of the vehicle seat typically. It is the side view which represented the state in the middle of storage of the vehicle seat typically. It is an enlarged view of a link mechanism. It is the side view which represented typically the storing state in the position which made it slide to the front side of a vehicle seat.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Basic structure of sheet 1>
First, the configuration of the seat 1 of the first embodiment will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the seat 1 of the present embodiment is configured as a right-hand seat in the second row of a car provided with a 3-row seat. The seat 1 includes a seat back 2 serving as a backrest of a seated occupant, a seat cushion 3 serving as a seating portion, and a headrest 5 serving as a head rest.

  The seat cushion 3 described above is connected on the floor F of the vehicle so as to be able to adjust its position in the front-rear direction via the pair of left and right slide rails 4. The lower end portion of the seat back 2 is at a backrest angle with respect to each lower arm 7 installed at the upper portion of each slide rail 4 described above via a recliner 6 functioning as a rotation shaft device capable of stopping rotation. It is linked in a state where it can be adjusted. The headrest 5 is inserted into the upper portion of the seatback 2 from above and mounted. Here, the floor F of the above-mentioned vehicle corresponds to the "vehicle body" of the present invention.

<Recliner 6>
The seat back 2 described above is held in a state in which the backrest angle with respect to the floor F is fixed by the configuration in which the recliners 6 described above are always held in the locked state. The above-described seat back 2 is released from the locked state of each recliner 6 by operating a reclining lever (not shown) provided at a predetermined position of the seat 1, and the backrest angle is freely made in the back and forth direction It can be switched to an adjustable state.

<Slide rail 4>
The seat cushion 3 is always held in a fixed position in the front-rear direction on the floor F by the configuration in which the slide rails 4 described above are held in a slide-locked state. In the seat cushion 3, the slide lock state of each slide rail 4 described above is released by operating a slide lever (not shown) provided at a predetermined place of the seat 1, and the position in the front-rear direction on the floor F Can be switched to a freely adjustable state.

<Storage mechanism 10>
Further, as shown in FIG. 2, the storage mechanism 10 connects the seat back 2 and the seat cushion 3 described above in a state in which the seat back 2 and the seat cushion 3 can be stored and moved forward with respect to each slide rail 4. The configuration is equipped with Here, the storage mechanism 10 corresponds to the "linked structure" of the present invention. Specifically, the storage mechanism 10 includes a pair of left and right hinge mechanisms 11 for hingedly connecting the front lower portion of the seat cushion 3 to the front end portion of the slide rail 4 on each side so as to be rotatable up and down, and the seat back 2 A pair of left and right four-bar link mechanisms 12 linking the lower arms 7 supporting each side from the lower side so as to be pivotally linkable with the slide rails 4 on each side in the front-rear direction And a pair of left and right transmission links 13.

  As shown in FIG. 1, the seat 1 provided with the storage mechanism 10 is always a striker in which each lock mechanism 7A attached to the lower end of the lower end of each lower arm 7 is installed on the slide rail 4 on each side. By being held in the locked state at 8A, it is held in the state of the seating usable initial position. As shown in FIG. 2, when the storage lever 10A provided at the shoulder of the seat back 2 is pulled up, the above-mentioned lock mechanism 7A is removed from the locked state with each striker 8A, as shown in FIG. It is switched to a state where it can be stored and moved forward.

  After the release operation, the seat 1 can push the seat back 2 forward with the link motion of the four-bar link mechanism 12 by pressing the seat back 2 forward. Then, in accordance with this operation, each transmission link 13 connecting the four-bar link mechanism 12 and the seat cushion 3 transmits the above-described power to the seat cushion 3 and causes the seat cushion 3 to rotate. It can be bounced to the front side with it.

  By the above-described series of operations, the seat cushion 3 is lifted up from the floor F to the front side, and the seat back 2 moves forward to the empty space after the seat cushion 3 is lifted up, and the seat 1 is moved. The sheet 100 is folded in the back of the seat back 110 of the first row of sheets 100 and stored in a compact form in the front-rear direction. With the above storage, the vacant space on the rear side of the seat 1 can be used as a passenger space for getting on and off the third row seat (not shown) from the passenger door D on the outer side of the seat 1, or the cargo space can be expanded can do.

  The seat 1 in the stored state is returned to the state of the initial position before storage shown in FIG. 1 by drawing the seat back 2 backward, contrary to the above-described storage operation. Specifically, the seat back 2 is moved rearward with the link motion of each of the four-bar link mechanisms 12 described above, by pulling the seat back 2 rearward. Then, in accordance with this operation, each transmission link 13 connecting the four-bar link mechanism 12 and the seat cushion 3 transmits the above-described power to the seat cushion 3 and causes the seat cushion 3 to rotate. It falls to the back side with it.

  Then, along with the rearward movement of the seat back 2, the above-described lock mechanisms 7A are pushed from above to the respective strikers 8A and locked, and the seat 1 is returned to the state of the initial position where seating can be used. It will be in the state of being held. Each four-bar link mechanism 12 constituting the storage mechanism 10 is configured to perform a link motion so as to move the seat back 2 back and forth with a motion of one degree of freedom. It can be easily moved in a stable operation mode without swinging in an unintended direction. Further, each hinge mechanism 11 similarly constituting the storage mechanism 10 is also configured to rotate the seat cushion 3 up and down in a motion with one degree of freedom, and therefore, an unintended direction during the rotation of the seat cushion 3 It can be moved easily with a stable sense of operation without making it swing.

  Furthermore, the transmission links 13 connecting the four-bar linkage mechanisms 12 and the hinge mechanisms 11 to each other in a interlocking manner are pin-connected so that both ends can be rotated between the mechanisms described above by the connecting shafts 13A and 13B. It is connected in the state of being done. By the above-mentioned connection, each transmission link 13 smoothly interlocks each four-bar link mechanism 12 and each hinge mechanism 11 which move in one degree of freedom with the rotational movement of the both ends of each transmission link 13. It is possible to

<Specific Configuration of Storage Mechanism 10>
Hereinafter, the specific configuration of the storage mechanism 10 described above will be described in detail. In addition, since the basic configuration of each lock mechanism 7A described above is the same as the known configuration disclosed in the document such as Japanese Patent Application Laid-Open No. 2012-36565, the description of the specific configuration thereof will be omitted. To be. In addition, since the basic configuration of each of the above-described recliners 6 is the same as the known configuration disclosed in the documents such as JP 2011-116303 A and JP 2015-30342 A, specific examples of these are Description of the configuration is also omitted.

  Each slide rail 4 has a lower rail 4A installed on the floor F and an upper rail 4B assembled so as to be slidable back and forth with respect to the lower rail 4A, and the slide of the upper rail 4B relative to the lower rail 4A is locked It is configured to be released or released. However, since these basic configurations are the same as known configurations disclosed in documents such as Japanese Patent Application Laid-Open No. 2008-254599 and the like, descriptions of these specific configurations will be omitted.

<Hinge mechanism 11>
The respective hinge mechanisms 11 constituting the storage mechanism 10 described above are respectively mounted on the front lower portions on the left and right sides of the seat cushion 3 in the respective hinge brackets 11B installed at the front end portions of the upper rails 4B of the respective slide rails 4 described above. On the other hand, it is configured to be rotatably connected with a pin by a hinge shaft 11A. By the above connection, each hinge mechanism 11 bounces the seat cushion 3 forward with respect to the above-mentioned hinge shaft 11A with respect to the slide rail 4 on each side (see FIG. 2) from each position from which it is lifted. It can be turned up and down in the form of being dropped onto the slide rail 4 (see FIG. 1).

<4-bar linkage 12>
Further, as shown in FIGS. 1 and 4, each four-bar link mechanism 12 has a lower arm 7 on each side and each support bracket 8 installed on an upper rail 4B of each slide rail 4, respectively. The front link 12A and the rear link 12B, which are arranged in parallel, are connected so as to be movable back and forth. One end of each front link 12A described above is rotatably pin-connected to the lower end of the lower arm 7 on each side by the connecting shaft 12A1, and the other end is connected to the upper rail 4B in the support bracket 8 on each side by the connecting shaft 12A2. It is configured to be rotatably pin-connected at a location closer to the front than the center in the front-rear direction. In each rear link 12B, one end thereof is rotatably pin-connected to the rear end lower portion of the lower arm 7 on each side by the connecting shaft 12B1, and the other end is the upper rail 4B in the support bracket 8 on each side by the connecting shaft 12B2. It is configured to be rotatably pin-connected to a point rearward of the center in the front-rear direction of the.

  By the above-mentioned connection, each four-bar linkage 12 makes each lower arm 7 supporting the seat back 2 with respect to the slide rail 4 on each side by the linked link motion of each front link 12A and each rear link 12B described above. It can be moved forward to a position on the front end of the upper rail 4B (see FIGS. 2 and 4) and can be moved backward to a position on the rear end of the upper rail 4B (see FIGS. 1 and 4) ing.

  In each of the four-link mechanisms 12 described above, each rear link 12B has a slightly longer link length than each front link 12A. As shown in FIGS. 1 and 4, when the lower arms 7 supporting the seat back 2 are moved backward, the front links 12A and the rear links 12B are mutually different. The upper end side connecting shafts 12A1 and 12B1 are arranged in a state in which the heights of the connecting shafts 12A1 and 12B1 are substantially aligned. As shown in FIG. 2 and FIG. 4, each of the four-bar linkages 12 performs a link motion from the initial position forward to move each lower arm 7 supporting the seat back 2 to the storage position on the front side. In this case, the front links 12A with short link lengths rotate so as to fall more to the front side than the rear links 12B with long link lengths.

  By this rotation, the connecting shaft 12B1 on the upper end side of each rear link 12B is moved to a position higher than the connecting shaft 12A1 on the upper end side of each front link 12A. Therefore, the seatback 2 supported by the lower arms 7 can be raised to the front side relative to the backrest angle of the initial position shown in FIG. 1 by the above rotation, and can be moved forward while approaching the standing angle. Therefore, by the storage movement of the sheet 1, the seat back 2 can be moved in a form of being packed further to the front side, and a wide empty space can be secured on the back and back side.

<Transmission link 13>
Each transmission link 13 has its both end portions rotated by the connecting shafts 13A and 13B at the side portions on each side of the seat cushion 3 described above and at the intermediate portion in the link length direction of the front link 12A of the four-bar link mechanism 12. It is possible to provide a pin connection. More specifically, the connecting shaft 13A for pin-connecting each transmission link 13 and each side portion of the seat cushion 3 is a hinge of each hinge mechanism 11 when the seat 1 is in the initial position described above with reference to FIGS. It is located in the upper rear region of the shaft 11A, and is located in the front upper region of the connecting shaft 13B for pin-connecting the transmission links 13 and the front links 12A. Each of the transmission links 13 is in a state of a substantially horizontal angular posture in which the front side is slightly raised at the time of the state of the initial position.

  Each transmission link 13 receives the pressing force from each front link 12A and transmits the pressing force to the seat cushion 3 when the seat back 2 is pushed forward from the initial position. By transmitting the pressing force, the seat cushion 3 is pushed around in the form of being flipped up toward the front side around the hinge axis 11A of each hinge mechanism 11 (see FIGS. 2 and 4). Each of the transmission links 13 raises the seat cushion 3 up to an upright angle close to the upright posture by the amount of movement by which the seat back 2 is pushed to the storage position.

  Each transmission link 13 receives the pull-in force from each front link 12A and transmits the pull-in force to the seat cushion 3 when the seat back 2 is pulled back from the storage position. The transmission of the pulling force causes the seat cushion 3 to be folded rearward around the hinge shaft 11A of each hinge mechanism 11 (see FIGS. 2 and 4). Each of the transmission links 13 pulls the seat cushion 3 back to the initial position by the amount of movement of the seat back 2 being pulled back to the initial position.

  By the way, as shown in FIG. 1, the above-mentioned seat cushion 3 has a shape in which the rear end portion extends rearward to a position where the lower end side of the above-described seat back 2 sinks. The gap between the However, even if the seat back 2 and the seat cushion 3 are configured to be moved in the front-rear direction in an interlocking manner in different movement modes between the initial position and the storage position, mutually adjacent shapes are mutually different. It moves smoothly without interfering with the movement of the

  Specifically, as shown in FIG. 3, when the seat back 2 is moved from the initial position in the storage direction, the above-described four-bar link mechanism 12 is raised from the angled posture state in which it is tilted backward to the front side. By being raised, it is moved forward in a movement mode in which the upward movement component becomes larger than the forward movement component. Therefore, even if the seat cushion 3 is moved in the vicinity of the initial position in conjunction with the movement of the seat back 2 by the retracting movement accompanied by the large movement of the seat back 2 to the upper side, the approaching shapes of both are Disturbing one another's movement is avoided.

  When the sheet 1 described above is used at a position where the sheet 100 in the first row slides from the position shown in FIG. 1 to the front side as shown in FIG. It is good to store and move at a position where it is slid to the side. By doing this, the sheet 1 can be stored so as to be folded behind the seat back 110 of the first row of sheets 100 in the position where it is slid forward, and the vacant space on the rear side is made wider. It will be possible to secure.

<Summary>
Summarizing the above, the seat 1 of the present embodiment has the following configuration. In other words, it is possible to move the seat cushion 3 forward from the initial position (use position) on the floor F (vehicle body) and move the seat back 2 forward to the empty space after the seat cushion 3 bounces. In the seat 1, at least one (both in the present embodiment) of the storage movement of the seat back 2 and the seat cushion 3 and / or the movement from the storage back to each other (the seat back 2 in the present embodiment) It has an interlocking structure (storage mechanism 10) for interlocking the movement of the other (the seat cushion 3 in this embodiment). With such a configuration, at least one of the storage movement of the seat cushion 3 and the seat back 2 or the movement of returning them from storage (both in the present embodiment) is one or the other (in the present embodiment) It can be performed by a simple operation of moving the seat back 2).

  Specifically, the seat cushion 3 is hinged on the floor F such that it can be pivoted up and down, and the seat back 2 is linked on the floor F so as to be movable back and forth by the four-bar link mechanism 12. A transmission link 13 for transmitting the motion of the seat back 2 (one) to the seat cushion 3 (the other) is connected between the two. With such a configuration, the seat cushion 3 and the seat back 2 can be stably operated with movements of one degree of freedom. In addition, by connecting the seat cushion 3 and the seat back 2 with each other by the transmission link 13, both the storage movement and the movement from the storage back are interlocked in a smooth manner that does not hold each other easily and conveniently. It can be carried out.

  The transmission link 13 is rotatably pin-connected to the seat cushion 3 (member on the seat cushion) and the intermediate portion (member on the seat back) of the front link 12A of the four-bar link mechanism 12 There is. With such a configuration, the transmission link 13 is not easily subjected to bending load, and both motions of the seat cushion 3 and the seat back 2 without providing an absorbing structure such as a long hole. The transmission structure can be conveniently configured to be able to properly transmit between the two.

  Although the structure in which the movement of the storage mechanism 10 in the storage direction is restricted at the storage position shown in FIG. 2 is not particularly mentioned, any position involving relative movement due to the storage movement of the storage mechanism 10 is abut A stopper structure may be provided. Further, a spring (not shown) applies an urging force in the storage direction or in the direction for returning the storage mechanism 10 from the storage mechanism 10 to any of the connection points of the hinge mechanism 11, the four-bar link mechanism 12 or the transmission link 13 that constitute the storage mechanism 10. May be set. By the setting of the spring, the storage movement of the storage mechanism 10 or the movement of returning from the storage can be assisted and simplified.

<Other Embodiments>
As mentioned above, although embodiment of this invention was described using one Example, this invention can be implemented with various forms other than the said Example. For example, the vehicle seat of the present invention can be applied not only to the rear seat of a car but also to a seat applied to a vehicle other than a car such as a railway, and for various vehicles such as aircraft and ships. It can be widely applied to the sheet to be provided.

  Further, the interlocking structure of the present invention may be configured to interlock one movement with the other movement in at least one of the storage movement of the seat back and the seat cushion and the movement from the storage back. . Therefore, in the above embodiment, the motion of the seat cushion is linked to the motion of the seat back, but the motion of the seat back may be linked to the motion of the seat cushion. In addition, the above-mentioned interlocking may be performed either in the storage movement of the seat back and the seat cushion or in the movement of returning from the storage.

  Further, the interlocking structure of the present invention does not necessarily have to interlock the seat back and the seat cushion by the power transmission member such as the transmission link shown in the above embodiment, and the seat back or the seat cushion may be simply used. One of them may be directly interlocked by pushing and pulling the other directly. When the seat back and the seat cushion are connected by a power transmission member such as a transmission link and interlocked as shown in the above embodiment, the connection portion of the power transmission member is the seat cushion side member and the seat It may be connected to any part of the back side member. In addition, the power transmission member is integrally rigidly connected to one of the seat cushion side member and the seat back side member, and the other can be provided with a pin connection or a slide connection. It may be

  Further, the mechanism for raising the seat cushion forward from the use position on the vehicle body is not limited to the hinge mechanism as shown in the above embodiment, but other mechanisms such as a four-bar link mechanism or a slide mechanism using a curved slide rail It may consist of a mechanism of Also, the mechanism for moving the seat back forward to the empty space after the seat cushion is raised is not limited to the four-bar link mechanism as shown in the above embodiment, but other mechanisms such as a hinge mechanism and a slide mechanism using a slide rail It may consist of a mechanism of In addition, it may be one without a slide rail that enables position adjustment in the front-rear direction of the entire seat.

Reference Signs List 1 seat 2 seat back 3 seat cushion 4 slide rail 4A lower rail 4B upper rail 5 headrest 6 recliner 7 lower arm 7A lock mechanism 8 support bracket 8A striker 10 storage mechanism (interlocking structure)
DESCRIPTION OF SYMBOLS 10A storage lever 11 hinge mechanism 11A hinge shaft 11B hinge bracket 12 4 link mechanism 12A front link 12A1 connecting shaft 12A2 connecting shaft 12B rear link 12B1 connecting shaft 12B2 connecting shaft 13 transmitting link 13A connecting shaft 13B connecting shaft 100 first row seat 110 seatback F floor (vehicle body)
D boarding door

Claims (2)

A vehicle seat provided with a storage mechanism capable of jumping a seat cushion forward from a use position on a vehicle body and moving a seat back forward to a vacant space after the bounce of the seat cushion,
The storage mechanism
A hinge mechanism for hingedly connecting the seat cushion to the vehicle body so as to be able to rotate up and down.
A four-bar linkage that links the seat back movably back and forth to the vehicle body by a front link and a rear link;
And a transmission link connected between the seat back and the seat cushion for interlocking both movements by power transmission,
A vehicle seat , wherein the transmission link connects the seat cushion to any one of the front link and the rear link . A vehicle seat according to claim 1, wherein
The transmission link is the seat cushion side member and the seat back side of the respective rotatable pin coupled Ru vehicle seat on the member.

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