JP3757919B2 - Rotating seat for vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular rotating seat that enables a disabled person, an elderly person, etc. (hereinafter simply referred to as an occupant) to easily get on and off the vehicle.
[0002]
[Prior art]
Conventionally, in this type of vehicle seat, a rotation mechanism that rotates the seat body approximately 90 ° between a position facing the front of the vehicle and a position facing the door opening, and rotation operation by this rotation mechanism are prohibited. A rotation lock mechanism, a release lever for manually releasing this rotation lock mechanism, and a mechanism (so-called seat) for sliding the seat body in the vehicle front-rear direction to adjust the seat position (seat position in the front-rear direction) of the seated person There is provided a vehicular rotating seat provided with a track mechanism.
In the vehicular rotating seat having such a function, in order to prevent a seated person from interfering with the vehicle body (such as a front pillar that forms a door opening) when the seat body is rotated, It is necessary to allow the seat body to rotate only at the position (for example, the rearmost position of the seat position: commonly referred to as “rearmost position”), and at other positions, it is necessary to prohibit the rotation of the seat body. This is the case for small cars such as relatively small mini cars.
[0003]
For this reason, conventionally, as a simple method, for example, a mark for displaying a position where the seat body may be rotated is attached to the seat body side (sliding side) and the vehicle floor side (non-sliding side). The sheet body is moved backward to a predetermined position where the marks of the mark coincide with each other, and then the release body is operated to rotate the sheet body. However, with this method, depending on the user, even if the mark on the seat body side and the mark on the vehicle floor side do not match, there is a possibility that the seat body may be accidentally rotated, so that the function is not fully exhibited. Can be considered.
Therefore, for example, as disclosed in Japanese Patent Application Laid-Open No. 2002-154357, a rotation lock mechanism that prohibits rotation of the seat body is provided, and when the seat body is moved to a predetermined position in the vehicle front-rear direction, a release lever release operation There has been provided a vehicle seat that is configured to be valid and invalid at other positions even when the release lever is released. According to this conventional rotation lock release restricting structure, the seat body cannot be rotated unless the seat body is moved to a predetermined position in the vehicle front-rear direction. Can be reliably prevented from interfering with.
[0004]
[Patent Document 1]
JP 2002-154357 A [Patent Document 2]
Japanese Patent Laid-Open No. 5-85237
[Problems to be solved by the invention]
However, according to the above conventional lock release regulating structure, the path from the release lever to the rotation lock mechanism via the wire is separated into the release lever side and the rotation lock mechanism side, and the release lever side is arranged on the seat body side for rotation. The lock mechanism side is arranged on the base side that slide-supports the seat body, and the operation force of the release lever is transmitted to the rotation lock mechanism side only when the seat body is located at a certain position in the vehicle longitudinal direction. As a result, the structure becomes complicated, and as a result, not only the cost of the rotating sheet is increased, but also there is a possibility of causing a malfunction.
SUMMARY OF THE INVENTION Therefore, the present invention provides a vehicle rotating seat that can reliably regulate the position in the vehicle front-rear direction (rotation operation position) where the seat body can be rotated without complicating the rotation lock device. Objective.
[0006]
[Means for Solving the Problems]
For this reason, this invention set it as the rotation sheet for vehicles of the structure described in the said each claim.
According to the vehicle rotating seat of the first aspect, the lever operation restricting member is provided on the seat body, and the release lever of the rotation lock mechanism is provided on the side of the seat slide mechanism for slidingly supporting the seat body. For this reason, when the seat body slides in the vehicle front-rear direction, the relative position between the release lever and the lever operation restricting member changes. By utilizing the fact that the relative position of the two changes, the release operation of the release lever is permitted by the lever operation restricting member when the seat body is positioned at the rotational operation position set within the slidable range. In a state where the seat body is located at a position other than the rotation operation position, a state in which the release operation of the release lever is prohibited by the lever operation restriction member can be realized.
As described above, since the release operation of the rotation lock mechanism is restricted by the relative position of the lever operation restriction member, which is changed by the sliding of the seat body, with respect to the release lever, Therefore, the position in the vehicle front-rear direction (rotation operation position) where the seat body can be rotated can be reliably regulated without complicating the rotation lock mechanism.
Further, when the seat main body is rotated, the seat slide mechanism is also rotated as a unit, and the seat slide mechanism is used as a slide mechanism for moving the seat main body not only in the vehicle front-rear direction but also in the vehicle width direction, for example. Can be diverted. Even in this case, the release lever of the rotation lock mechanism can be released to return the seat body to the front of the vehicle only when the seat body is positioned at a predetermined position (rotation operation position) in the vehicle width direction. Therefore, in this respect as well, it can be rotated while reliably avoiding interference with the seat body and the seated person's door.
Furthermore, according to the vehicle rotation seat, the release operation of the release lever at a position other than the rotation operation position can be reliably restricted.
The rotation operation position is not only in front of the seating position, but also in the back of the seat body in order to avoid interference with obstacles (for example, rear seat, center console box, pillars constituting the door opening, etc.). It can be set not only at the rear end position of the slidable range but also at the front end position or both, and can be set at an arbitrary position in the middle of the slidable range.
In addition, a flat side plate may be provided on the side portion of the normal seat frame as a cover that shields an internal mechanism such as a rotation mechanism or a seat slide mechanism or as a reinforcing member of the seat frame. As a lever operation restricting member, the above-described effects can be obtained while further simplifying the configuration of the vehicle rotary seat and reducing the cost.
[0007]
According to claim 2 rotating vehicle seat according, it is possible to align to the rotation position of the seat body easily, it is possible to ensure good operability of the rotation seat the vehicle.
According to the rotating seat for a vehicle according to the third aspect , in addition to the above-described effects, a more detailed operation can be performed on the seat body. That is, for example, the seat body can be slid in the front-rear direction with the seat body positioned facing the front of the vehicle, and when the seat body is slid to the rotational operation position by the slide mechanism and then rotated, Since the slide mechanism slides forward or backward by an auxiliary slide mechanism different from the above slide mechanism, the seat body can be moved from the position facing the front of the vehicle to the door opening side without causing the seat body and the seated person to interfere with the vehicle body. It can be rotated to a position facing
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a vehicle M in which the vehicular rotating seat 1 of the present embodiment is applied to a passenger seat. FIG. 1 shows a state where the door D of the passenger seat is opened and the seat body 10 of the vehicle rotating seat 1 is moved to the outdoor side through the door opening K.
As shown in FIG. 2, the vehicular rotating seat 1 of this example includes a seat body 10, an auxiliary slide mechanism 20 for sliding the seat body 10 in the vehicle front-rear direction, a seat slide mechanism 40, and the seat body 10. A rotation mechanism 30 that rotates between a front-facing position and a position facing the door opening K side is provided.
First, the main base 21 is attached to the floor F of the vehicle M. On the upper surface of the main base 21, an auxiliary slide base 23 is provided so as to be slidable in the vehicle front-rear direction via guide rails 22, 22 mounted in parallel to each other in the vehicle front-rear direction (direction orthogonal to the paper surface in FIG. 2). It has been. A rotation mechanism 30 is attached to the upper surface of the auxiliary slide base 23.
[0009]
The rotation mechanism 30 has an outer ring 31 and an inner ring 32 that are coaxially and rotatably combined with each other. An inner ring 32 is fixed to the upper surface of the auxiliary slide base 23. In FIG. 2, the symbol C indicates the rotation center of the outer ring 31 and the seat body 10 with respect to the inner ring 32 (the rotation center of the rotation mechanism 30). As illustrated, the rotation center C of the seat body 10 is eccentric to the door opening K side with respect to the seat surface center.
A gear 31 a is formed on the outer peripheral surface of the outer ring 31 over the entire circumference. A rack 33 is engaged with the gear 31a. The rack 33 is mounted on the vehicle floor F along the guide rail 22 on the door opening K side.
Since the rack 33 is engaged with the gear 31 a of the outer ring 31, the rotation operation of the seat body 10 by the rotation mechanism 30 and the sliding operation in the vehicle front-rear direction by the auxiliary slide mechanism 20 are performed in conjunction with each other. That is, the seat main body 10 rotates toward the door opening K side (counterclockwise in FIG. 1) from the position facing the front of the vehicle while sliding forward, and the door opening K while sliding toward the rear of the vehicle. Rotate from the position facing toward the vehicle toward the front side of the vehicle (clockwise in FIG. 1).
[0010]
A rotation base 34 is attached to the upper surface side of the outer ring 31. The seat body 10 is attached to the upper surface of the rotating base 34 via a seat slide mechanism 40. The seat slide mechanism 40 includes two guide rails 41 and 41 and a seat base 42 that slides thereby. Both guide rails 41 and 41 are attached in parallel to each other along the left and right side portions of the upper surface of the rotation base 34. The seat body 10 is fixed to the upper surface of the seat base 42.
A side plate 42a is provided on the edge of the seat base 42 on the door opening K side (left edge in FIG. 2) so that the seat body 10 faces the front of the vehicle. The side plate 42 a is provided in a range from the front end to the rear end along the edge of the seat base 42. This side plate 42a shields the mechanism portion (auxiliary slide mechanism 20, rotating mechanism 30, seat slide mechanism 40, etc.) of the vehicle rotating seat 1 from its surroundings and prevents troubles such as foreign matter biting into these mechanisms. It has a function to prevent.
In the present embodiment, the side plate 42a also has a function of restricting the release operation of the release lever 51 of the rotation lock mechanism 50, which will be described later, and this corresponds to an embodiment of the lever operation restricting member described in the claims. To do. This will be described later.
Unlike the auxiliary slide mechanism 20, the seat slide mechanism 40 is a slide mechanism that operates independently of the rotation mechanism 30. When the seat body 10 faces the front of the vehicle, the seat body 10 is moved forward and backward. A function as a so-called seat track for adjusting the seat position (sitting position) of the seated person is provided. The seat slide mechanism 40 is provided with a lock mechanism (not shown). With this locking mechanism, the seat body 10 is locked at an arbitrary position in the vehicle front-rear direction so that the foot space of the seated person can be freely adjusted according to the body size of the seated person.
[0011]
Next, between the rotation base 34 and the main base 23, a rotation lock mechanism 50 for locking the rotation position of the seat body 10 and a release lever 60 (FIG. 2) for releasing the rotation lock mechanism 50 by manual operation. Is omitted). Details of the rotation lock mechanism 50 and the release lever 60 are shown in FIG.
The rotation lock mechanism 50 and the release lever 60 are respectively attached to the lower surface side of the rotation base 34. The rotation lock mechanism 50 is supported by a bracket 51 fixed to the lower surface of the rotation base 34, and the bracket 51 so as to be rotatable in the lateral direction (along the surface direction of the rotation base 34) via a support shaft 52. The lock body 53 is provided. A lock pin 54 is attached to the lock body 53. When the lock pin 54 enters into the lock grooves 55a and 56a of the lock plates 55 and 56 attached to the upper surface of the main base 23, the rotation base 34 and the rotation of the seat body 10 are prohibited. In FIG. 3, when the lock pin 54 enters the lock groove 55 a of the lock plate 55, the seat body 10 is locked at a position facing the front of the vehicle, and when the lock pin 54 enters the lock groove 56 a of the lock plate 56, The seat body 10 is locked at a position facing the door opening K side.
A tension spring 57 is interposed between the bracket 51 and the lock body 53. 3, the lock body 53 is urged counterclockwise in FIG. 3 (the lock direction, that is, the direction in which the lock pin 54 enters the lock grooves 55a and 56a).
[0012]
On the other hand, the release lever 60 is disposed in the front portion of the rotation base 34 and in the vicinity of the corner portion on the door opening K side. The release lever 60 is supported by the bracket 62 via a support shaft 61 so as to be capable of rotating in the lateral direction. A bracket 62 is fixed to the lower surface of the rotary base 34. A tension spring 63 is interposed between the release lever 60 and the bracket 62. The release lever 60 is urged in the clockwise direction (lock side) by the tension spring 63.
The release lever 60 and the lock body 53 of the rotation lock mechanism 50 are connected by a wire 70. For this reason, when the release lever 60 is manually rotated from the lock position shown by the solid line in FIG. 3 to the unlock position shown by the two-dot chain line against the tension spring 63, the wire 70 is pulled, whereby the rotation lock mechanism. The 50 lock bodies 53 rotate in the clockwise direction against the tension spring 57, whereby the lock pin 54 is detached from the lock groove 55 a of the lock plate 55. For this reason, the rotation base 34 and the sheet main body 10 are in a state of being rotatable toward the door opening W side.
On the other hand, when the manual operation of the release lever 60 toward the unlock position is stopped, the release lever 60 is returned to the lock position indicated by the solid line in FIG. As a result, the wire 70 sags. When the wire 70 is slack, the external force that pulls the lock body 53 of the rotation lock mechanism 50 toward the unlock side is removed, so that the lock body 53 is returned to the lock side (counterclockwise direction in FIG. 3) by the tension spring 57. When the lock body 53 is returned to the lock side by the tension spring 57, the lock pin 54 enters the lock groove 55a (or 56a) of the lock plate 55 (or 56), whereby the rotation base 34 and consequently the seat body 10 are moved to the front of the vehicle. It is locked in the direction position (or the position facing the door opening K side), and the rotation operation is prohibited.
[0013]
The side plate 42a of the seat base 42 is located on the door opening K side (lower side in FIG. 3) of the rotation lock mechanism 50 configured as described above. Since the side plate 42a is provided integrally with the seat base 42 that supports the seat main body 10, when the seat main body 10 is moved in the vehicle front-rear direction by the seat slide mechanism 40, the side plate 42a moves integrally therewith in the vehicle front-rear direction. . When the seat body 10 is positioned at the rearmost position (rearmost position) within the range in which the seat slide mechanism 40 can slide, the front end (the left end in the figure) of the side plate 42a is located on the side of the release lever 60 as shown by the solid line in FIG. It will be in the state where it was located in the back side rather than on the movement locus of release lever 60. Therefore, in this state, the release lever 60 can be rotated to the unlock side. Therefore, in the present embodiment, the rearmost position among the sheet positions of the sheet main body 10 is set as a rotation operation position where the sheet main body 10 can be rotated.
On the other hand, when the seat body 10 is moved forward from the rotational operation position by the seat slide mechanism 40, the side plate 42a is also integrally displaced forward as indicated by a two-dot chain line in FIG. When the side plate 42a is displaced to the front side, the side of the release lever 60 is cut off and enters the operation locus, so that the release lever 60 cannot be rotated to the unlock side. In the present embodiment, the side plate 42a is retracted from the operation locus of the release lever 60 only when the seat body 10 is positioned at the rotation operation position, and the release lever 60 is rotated to the unlock side only in this state. While the rotation lock of the sheet main body 10 can be released by operating, when the sheet main body 10 is moved to the front side of the rotation operation position, the side plate 42a enters the operation locus of the release lever 60, and as a result, the release lever Accordingly, the rotation of the seat body 10 is prohibited.
[0014]
According to the vehicle rotating seat 1 of the present embodiment configured as described above, when the seat body 10 is positioned at the rearmost position (rotational operation position) of the range in which the second seat slide mechanism 40 can slide, the release is performed. It is possible to unlock the rotation lock mechanism 50 by releasing the lever 60, so that the sheet main body 10 can be rotated. On the other hand, in the state where the seat body 10 is positioned in front of the rear end position, the side plate 42a as the lever operation restricting member enters on the operation locus of the release lever 60, and therefore the release lever 60 is rotated to the unlock side. Therefore, since the rotation lock mechanism 50 cannot be unlocked, the seat body 10 cannot be rotated.
In this way, if the seat body 10 is not positioned at the end position of the slidable range, the seat body 10 is rotated from the position facing the front of the vehicle toward the door opening K or vice versa. Therefore, the seat main body 10 can be rotated while reliably avoiding the seated person from interfering mainly with front obstacles (such as pillars forming the door opening K).
In addition, the above-mentioned effects can be obtained with a structure substantially the same as the conventional configuration without separating the rotation lock mechanism 50 and the release lever 60 as in the prior art, so that the cost of the vehicle rotary seat 1 can be increased. It will not be incurred, nor will it complicate the structure. In addition, since the side plate having a function as a cover for shielding the mechanism portion provided on the seat base is used by changing the shape to an appropriate shape, the cost increases in this respect as well. There is no.
Further, when the seat body 10 is slid forward from the rotation operation position, the release lever 60 is hidden by the side plate 42a and cannot be seen by a seated person or the like. For this reason, when the seat body 10 is not located at the rotation operation position, the seated person or the like does not attempt to operate the release lever 60 by mistake.
[0015]
Next, in the embodiment described above, the seat slide mechanism 40 is configured to rotate integrally with the rotation of the seat body 10 by the rotation mechanism 30. Therefore, the seat slide mechanism 40 moves the seat body 10 to the front of the vehicle. The seat body 10 has a function of adjusting the seat position of the seated person by sliding the seat body 10 in the vehicle front-rear direction, and the seat body 10 is rotated to the door opening K side when the seat body 10 is rotated to the door opening K side. It can function as a vehicle width direction slide mechanism that moves the main body 10 in the vehicle width direction.
After the seat body 10 is directed toward the door opening K side, the seat body 10 is further slid to the outside in the vehicle width direction, so that the seated person can move from the seat body 10 to a wheelchair or the like more easily. It is possible to transfer to the seat body 10. Even when the seat slide mechanism 40 is used as a vehicle width direction slide mechanism, the rotation lock mechanism 50 is released to release the seat unless the seat body 10 is positioned at the rotation operation position (the rearmost position) of the slide range. The main body 10 cannot be rotated. For this reason, the seat body 10 is accidentally rotated while the seat body 10 is slid outward in the vehicle width direction (a state other than the rotational operation position), resulting in interference with the door opened by the seated person. It is possible to prevent troubles such as
[0016]
The embodiment described above can be implemented with various modifications. For example, the rotation operation position at which the seat body 10 can be rotated is set to the rearmost position in the slide range of the seat slide mechanism 40, but this rotation operation position can also be set to a middle position of the slide range. is there. In order to set the rotation operation position in the middle of the slide range, for example, a missing portion 42b (shown by a two-dot chain line in FIG. 4) is provided in the middle in the longitudinal direction of the side plate 42a as a lever operation restricting member. can do.
Further, although the configuration in which the rotation operation of the seat body 10 and the sliding operation in the vehicle longitudinal direction are linked is illustrated, the auxiliary slide mechanism 20 may be omitted and only the rotation operation may be performed.
Furthermore, by providing the seat slide mechanism 40 on the upper surface side of the rotation base 34, the seat slide mechanism 40 can be used not only as a slide mechanism for adjusting the seat position but also as a slide mechanism in the vehicle width direction. First, the seat slide mechanism may be disposed on the vehicle floor F, and the auxiliary slide mechanism and the rotation mechanism or only the rotation mechanism may be disposed above the seat slide mechanism. In this case, the seat slide mechanism has only a function of adjusting the seat position by sliding the seat body 10 only in the vehicle front-rear direction, and even in this case, the same effects as described above can be obtained.
Moreover, although the vehicle rotary seat 1 applied to the passenger seat is illustrated, it goes without saying that the vehicle rotary seat 1 can also be applied to seats at other positions such as a driver seat or a rear seat.
[Brief description of the drawings]
FIG. 1 is a plan view of a vehicle provided with a vehicular rotating seat in a passenger seat.
FIG. 2 is a view as viewed from the arrow (2) in FIG. 1, and is a view of the vehicle rotary seat as viewed from the rear.
FIG. 3 is a plan view of a rotation lock mechanism and a release lever.
FIG. 4 is a perspective view showing a positional relationship between a release lever and a lever operation restricting member.
[Explanation of symbols]
M ... Vehicle K ... Door opening 1 ... Vehicle rotating seat 10 ... Seat body 20 ... Auxiliary slide mechanism 30 ... Rotating mechanism 34 ... Rotating base 40 ... Seat slide mechanism 42 ... Seat base, 42a ... Side plate (lever operation restricting member)
50 ... Rotation lock mechanism 55, 56 ... Lock plate 60 ... Release lever 70 ... Wire

Claims (3)

A seat body, a rotation mechanism that rotates the seat body, a seat slide mechanism that slides the seat body in the vehicle front-rear direction, a rotation lock mechanism that prohibits rotation of the seat body, and a manual operation of the rotation lock mechanism A release lever that is released by the vehicle, and the release lever is a vehicular rotating seat that can be released only when the seat body is moved to a rotational operation position set in the vehicle longitudinal direction,
The one providing the lever operation restricting member to the seat body, a configuration in which Ru provided with the release lever on the fixed side of the seat slide mechanism,
The lever operation restricting member is a cover that shields the rotation mechanism and / or the seat slide mechanism, and retracts from the operation locus of the release lever in a state where the sheet main body is located at the rotation operation position, A vehicular rotating seat characterized in that when the main body is moved to a position other than the rotation operation position, the main body enters a movement locus of the release lever to prevent the release operation of the release lever . The vehicle rotating seat according to claim 1,
A vehicular rotating seat in which the rotation operation position of the seat body is set to the foremost end position or the end position of the slidable range by the seat slide mechanism. A rotating seat for a vehicle according to claim 1 or 2,
A vehicular rotating seat provided with an auxiliary slide mechanism that moves the seat body in the vehicle front-rear direction in conjunction with the rotating mechanism.

Images