JP2022097347A - Vehicle seat device - Google Patents

Abstract

To provide a vehicle seat device, in which a rotation support that rotates integrally with a seat body is rotatably supported by a base body via a bearing, and which can enhance a rattling suppression effect with respect to the base body of the rotation support, by the arrangement of a rattling suppression member capable of suppressing rattling of the rotation support by closely contacting a portion between the rotation support and the base body, where the portion making contact action with the rotation support and the base body can be separated away from the rotation center of the rotation support. and further by the arrangement of the rattling suppression member immediately below a load input portion to the rotation support from a seat body maintained even when the seat body receives an unbalanced load due to such a situation that an occupant leans forward/backward or to the left/right while seated on the vehicle seat device.SOLUTION: A rattling suppression member 70 is arranged on an outer side in a radial direction with respect to a bearing 45, and at least a portion of the rattling suppression member 70 is arranged at a position overlapping a coupling portion 31 between a seat body S and a rotation support 30 in the plan view.SELECTED DRAWING: Figure 5

Description

The present invention includes a seat device, particularly a base body that can be fixedly provided on the floor of a vehicle body, a rotary support that is coupled to the seat body so as to rotate integrally and supports the seat body, and a base body thereof. With a bearing that rotatably supports around the vertical axis, a lock mechanism that is provided between the base body and the rotary support and can selectively lock the rotary support to one of multiple rotational positions, and the lock mechanism. With the rotation position locked, the base body and the rotation support are in close contact with each other, and the backlash suppression member that suppresses the rattling of the rotation support and the lock mechanism rotate the support. The present invention relates to a vehicle seat device including an interlocking member that interlocks the backlash suppressing member with a lock mechanism so that the backlash suppressing member releases the contact state in response to unlocking the rotational position of the body.

In the present invention and the present specification, the "diametrical direction" means the radial direction of the virtual circle with the rotation axis of the rotation support (hence, the seat body) as the central axis, and the "circumferential direction" means the virtual circle. Refers to the circumferential direction of.

In the vehicle seat device, for example, Patent Documents 1 and 2 describe that the backlash suppressing member is arranged at substantially the same position or inward position in the radial direction with respect to the bearing that supports the rotary support on the base body. As is conventionally known.

Japanese Unexamined Patent Publication No. 2002-160556 International Publication No. 2020-110984

By the way, the backlash suppressing member suppresses the rattling of the rotating support by closely contacting the base body and the rotating support in a state where the rotating support is locked, but the effect of suppressing the backlash is. The farther the point of contact of the restraining member with the rotation support / base body is from the rotation center of the rotation support, the stronger the effect is exerted due to the lever ratio. However, in a structure in which the backlash suppressing member is arranged at substantially the same position or inward position (that is, radially inward) with respect to the bearing as in the conventional devices of Patent Documents 1 and 2, the backlash suppressing effect is sufficiently sufficient. Couldn't expect.

Therefore, in order to enhance the rattling suppressing effect, it is conceivable to arrange the rattling suppressing member on the radial outer side of the bearing, but the placement alone is not sufficient for suppressing rattling. That is, the present inventor has clarified that the backlash suppression measures should be taken in consideration of the change in the load distribution received from the seat body by the rotary support as the weight shifts to the front and back and left and right of the occupant sitting on the seat.

For example, when the seat body receives an eccentric load due to the occupant tilting back and forth or left and right while seated, in the seat body part where the load distribution is high, the load input point directly under the seat body (that is, the load input point from the seat body to the rotary support). Underneath), a force is applied that causes the rotary support on the outer side of the bearing to sink downward, while at the seat body portion where the load distribution is low, directly below it (that is, directly below the load input location), from the bearing. A force is applied in the direction in which the rotary support on the outer side is lifted upward and separated from the base body. Then, such a biased force is applied, which causes rattling of the rotary support.

The present invention has been proposed in view of the above, and an object of the present invention is to provide a vehicle seat device capable of solving the above-mentioned problems of the conventional device with a simple structure.

In order to achieve the above object, the present invention comprises a base body fixably provided on the floor of the vehicle body, a rotary support that is coupled to the seat body so as to rotate integrally and supports the seat body, and rotation thereof. A bearing that rotatably supports the support on the base body around the vertical axis, and a bearing provided between the base body and the rotation support body so that the rotation support body can be selectively locked to one of a plurality of rotation positions. In a state where the rotary support is locked in the rotational position by the lock mechanism and the lock mechanism, the rotary support is in a contact state in which the base body and the rotary support are in close contact with each other, and the rotary support rattles. The backlash suppressing member is attached to the locking mechanism so that the backlash suppressing member releases the contact state in response to the locking mechanism unlocking the rotational position of the rotary support. In a vehicle seat device provided with an interlocking member, the backlash suppressing member is arranged on the radial outer side of the bearing, and at least a part of the backlash suppressing member is the seat body in a plan view. The first feature is that it is arranged at a position overlapping with the joint portion between the rotary supports.

The second aspect of the present invention is that, in addition to the first feature, at least a part of the backlash suppressing member is arranged at a position where the base body overlaps with the connecting portion connected to the floor portion in a plan view. It is a feature of.

Further, in the present invention, in addition to the first feature, the seat seat portion on which the occupant sits on the seat body includes left and right side frames serving as skeletons on the left and right side portions of the seat seat portion, and the joint portion comprises. The third feature is that the joint portion includes a bolt that connects the left and right side frames and the left and right side portions of the rotary support, respectively.

Further, in the present invention, in addition to the first feature, the rotary support and the base body are formed in a substantially rectangular shape in a plan view, and the backlash suppressing member has diameters at four corners of the rotary support. It is provided with a main body portion that is slidably supported and can move between a predetermined backlash suppression position and a suppression release position, and the main body portion is a first receiving portion fixed to four corner portions of the base body. The fourth feature is that the four corners of the rotary support have tapered tips that can be pushed and pressed in a wedge shape between the two receiving portions fixed to each other.

Further, in addition to the fourth feature, in the present invention, a spring support member for supporting a spring that constantly urges the main body toward the backlash suppression position is fixed to the four corners of the rotary support. The fifth feature is that the main body portion is supported by the spring support member so as to be slidable in the radial direction.

Further, in the present invention, in addition to the fourth feature, the interlocking member is formed in the shape of a circular ring plate and is arranged concentrically on the radial outer side of the bearing, and the lock of the lock mechanism is locked. An interlocking member main body that can rotate relative to the rotary support according to the release, and a drive unit that is connected to the interlocking member main body and drives the main body to the restraint release position in response to the unlock release are integrated. The sixth feature is to prepare for.

Further, in the present invention, in addition to the fourth feature, the support frame integrally having the second receiving portion and fixed to the four corner portions of the rotary support supports the main body portion so as to be slidable in the radial direction. The seventh feature is that it is done.

Further, in addition to the sixth feature, in the present invention, a spring support member for supporting a spring that constantly urges the main body toward the backlash suppression position is fixed to the four corners of the rotary support. The eighth feature is that the interlocking member main body is rotatably and slidably supported by the spring support member.

Further, in the present invention, in addition to the fourth feature, the first and second receiving portions are arranged so as to face each other in the vertical direction, and the tip portion is vertically located between the first and second receiving portions. The ninth feature is that it can be inserted so as to be sandwiched between the two.

According to the present invention, since the backlash suppressing member is arranged on the radial outer side of the bearing, the contact point of contact of the backlash suppressing member with the rotation support / base body is kept away from the rotation center of the rotation support. This makes it possible to exert the backlash suppressing effect of the backlash suppressing member more strongly than the conventional device due to the relationship of the lever ratio from the center of rotation. Further, even when there is a concern that the load distribution received by the seat body is biased due to the weight shift of the occupant sitting on the seat back and forth and left and right, and there is a concern that rattling may occur between the rotary support and the base body, in the present invention, the present invention may be used. In particular, since at least a part of the backlash suppressing member is arranged at a position where it overlaps with the joint portion between the seat body and the rotary support in a plan view, the joint portion (that is, the load input point from the seat body to the rotary support) The rattling suppressing member existing directly underneath can more effectively exert the rattling suppressing effect, whereby the rattling can be effectively suppressed.

Further, according to the second feature, at least a part of the backlash suppressing member is arranged at a position where the base body overlaps with the connecting portion connected to the vehicle body floor portion in a plan view, so that the backlash suppressing member receives this. The base body is also arranged so as to overlap the portion connected to the vehicle body floor portion, whereby the rattling suppression effect can be more effectively exhibited and the rattling can be suppressed more efficiently.

Further, according to the third feature, the joint portion between the seat body and the rotary support (that is, the load input portion) connects the left and right side frames of the seat seat portion and the left and right side portions of the rotary support, respectively. Since it is a joint portion including bolts, a rattling suppressing member can be arranged directly under a strong load input portion from the side frame to the rotary support, and the rattling suppressing effect can be effectively exerted.

Further, according to the fourth feature, the rotary support and the base body are formed in a substantially rectangular shape in a plan view, and the backlash suppressing member is supported by the four corners of the rotary support so as to be slidable in the radial direction. It has a main body that can move between the backlash suppression position and the suppression release position, and the main body has a first receiving part that is fixed to the four corners of the base body and a second receiving part that is fixed to the four corners of the rotary support. Since it has a tapered tip that can be pushed and pressed in a wedge shape between the two, the backlash suppressing member and the first and second receiving parts that receive it are located at the four corners of the rotary support and the base, which are rectangular in shape, respectively. Utilizing the dead space, it can be deployed compactly. Further, even if the main portion of the backlash suppressing member is formed longer in the sliding direction (diameter direction) of the member, not only can it be reasonably arranged at the four corners of the rotary support, but also the main portion is located at the four corners. It can be extended to just below the joint without difficulty.

Further, according to the fifth feature, a spring support member for supporting the spring that constantly urges the main body toward the backlash suppression position is fixed to the four corners of the rotary support, and the spring support member is attached to the spring support member. Since the main body is supported so as to be slidable in the radial direction, the spring support member can also be used as a sliding guide means for the backlash suppressing member, which can contribute to the structural simplification of the device.

Further, according to the sixth feature, the interlocking member is formed in the shape of a circular ring plate and is arranged concentrically on the radial outer side of the bearing, and is a rotary support according to the lock / unlock of the lock mechanism. In contrast, the interlocking member body that can rotate relative to the other and the drive unit that is connected to the interlocking member body and drives the main unit to the restraint release position in response to the unlocking are integrally provided, so that the lock mechanism can be positioned in the circumferential direction. Regardless of this, the locking mechanism and the backlash suppressing member can be linked to each other by the interlocking member, and the degree of freedom in designing the locking mechanism can be increased accordingly.

Further, according to the seventh feature, the support frame integrally having the second receiving portion and fixed to the four corner portions of the rotary support supports the main body portion so as to be slidable in the radial direction. The support frame that also serves as a support frame is also used as a sliding guide means for the backlash suppressing member, and can contribute to the structural simplification of the device accordingly.

Further, according to the eighth feature, a spring support member for supporting the spring that constantly urges the main body toward the backlash suppression position is fixed to the four corners of the rotary support, and the spring support member is attached to the spring support member. Since the interlocking member main body is rotatably and slidably supported, the spring support member can also be used as a sliding support means for the interlocking member, which can contribute to the structural simplification of the device.

Further, according to the ninth feature, the first and second receiving portions are arranged so as to face each other in the vertical direction, and the tip portion is inserted so as to be sandwiched between the first and second receiving portions in the vertical direction. Since it is possible, the main part of the backlash suppressing member can be reliably sandwiched in the vertical direction when the main part of the backlash suppressing member is pushed and pressed between the first and second receiving parts, whereby the backlash suppressing member can be held. It can suppress rattling up and down more effectively.

An overall perspective view showing an embodiment of a vehicle seat device according to the present invention. A perspective view showing a main part of the seat seat of the seat device (particularly, elements below the rotary support). FIG. 3 is a view taken along the arrow 3 of FIG. 2, showing a case where the lock mechanism is in the locked operating state. It is an enlarged plan view of the main part of the lock mechanism, and the solid line shows the locked operating state and the chain line shows the unlocked state. 5-5 line enlarged cross-sectional view of FIG. 3 (lock mechanism is in the locked operating state) Enlarged sectional view of line 5-5 in FIG. 3 (lock mechanism is unlocked) Enlarged sectional view taken along line 7-7 in FIG. Enlarged sectional view taken along line 8-8 in FIG. It is a plan sectional view which shows the linking structure of the interlocking member and the backlash suppressing member, and (A) is the figure which shows the case where the lock mechanism is in a locked operation state (9A-9A line enlarged sectional view of FIG. 5). Further, (B) is a sectional view corresponding to FIG. 9 (A) showing a case where the lock mechanism is in the unlocked state.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, "front and back", "left and right", and "up and down" refer to the direction seen from the occupant with the seat in a posture in which the seated occupant faces forward.

First, in FIG. 1, the seat body S of the vehicle seat device 10 mounted on the vehicle stands above the seat seat Sc on which the occupant's hips are placed and the rear portion of the seat seat Sc, and the occupant's back and the like. It is provided with a seat back portion Sb that supports the waist.

The seat frame SF that is the skeleton of the seat body S includes a seat frame Sfc that is the skeleton of the seat seat Sc, and a back frame SFb that is the skeleton of the seat back Sb. It is covered with Pc, and the back frame SFb is covered with the seat back pad Pb. The back frame SFb is supported on the rear end of the seat frame SFc so as to be swingable back and forth via an electric or manual reclining mechanism (both conventionally known).

The seat frame SFc is a pair of left and right side frames 11a that are arranged at intervals on the left and right and extend in the front-rear direction, a front frame 11b that connects the front ends of the side frames 11a, and a pair of the side frames 11a. It has a rear pipe 11c that connects the rear ends. A pan frame 11p that connects both side frames 11a is fixed to the front frame 11b. Further, between the front frame 11b and the rear pipe 11c, a plurality of front and rear end portions of a plurality of seat springs 12 which are arranged at intervals in the left-right direction and each of which is bent in a zigzag direction and extends in the front-rear direction are bridged.

Further, the back frame SFb includes a pair of left and right side frames 13a that are arranged at a space between the left and right sides and extend in the vertical direction, a lower horizontal frame 13b that connects the lower ends of the left and right side frames 13a, and the left and right side frames 13a. It has an upper horizontal frame 13c that connects the upper ends. The left and right end portions of the plurality of seat springs 14 are bridged between the left and right side frames 13a, and the headrest support portion 13ch for supporting the headrest is firmly fixed to the upper horizontal frame 13c.

With reference to FIGS. 2 to 8, the vehicle seat device 10 has a base body 40 functioning as a base frame thereof at the lowermost portion, and the base body 40 has a large circular hole in the center thereof. It has 40 hours and is formed in a rectangular shape in a plan view. A pair of left and right movable rails 15 extending in the front-rear direction are fixed to the lower surfaces of the left and right side portions of the base body 40, and these movable rails 15 are fixed to the floor portion 16 of the vehicle body and a pair of left and right movable rails extending in the front-rear direction. They are supported by the fixed rails 17 so as to be slidable back and forth.

Thus, the movable rail 15 and the fixed rail 17 cooperate with each other to form a front-rear slide mechanism SL that connects and supports the base body 40 to the floor portion 16 so as to be able to slide only back and forth. The front-rear slide mechanism SL constitutes a connecting portion for connecting the base body 40 to the floor portion 16.

A conventionally known front-rear position adjustment mechanism (not shown) capable of arbitrarily adjusting and fixing the front-rear position of the movable rail 15 (that is, the base body 40 and the seat body S) between the movable rail 15 and the fixed rail 17. Is arranged, and the front-rear position adjusting mechanism is manually operated by an operation lever 18 that is interlocked with the mechanism and projects to the lower front of the seat seat Sc.

The front-rear position adjusting mechanism may be omitted. In that case, the base body 40 is fixed on the floor portion 16 of the vehicle body so that the front-rear position cannot be adjusted, and the fixed portion constitutes a connecting portion.

Further, between the base body 40 and the seat seat Sc, a seat rotation mechanism R that rotatably supports the seat seat Sc (hence, the seat body S) around the vertical axis is provided. That is, a rotary support 30 that can rotate together with the seat seat Sc is arranged above the base body 40, and the rotary support 30 has four corners in front, back, left, and right of the seat seat Sc (more specifically). Is fixed to each of the left and right side frames 11a of the seat frame SFc (for example, fastened with a plurality of sets of bolts 31b and nuts 31n).

Thus, the bolt 31b and the nut 31n form a joint portion 31 that connects the seat body S to the rotary support 30. The head of the bolt 31b may be a stud bolt that stands up from the upper surface of the rotary support 30 by being fixed (for example, welded) to the rotary support 30.

The rotary support 30 has a large circular hole 30h in the center and is formed in a rectangular shape in a plan view. The rotary support 30 is vertically placed between the rotary support 30 and the inner peripheral portion of the base body 40. A bearing 45 (for example, a ball bearing) that rotatably supports around the axis is interposed.

A circular ring-shaped base plate 41 integrally having a ball receiving recess on the lower side of the bearing 45 is polymerized and fixed (for example, bolted) to the upper surface of the inner peripheral portion of the base body 40, and the bearing 45 has the base plate 41 attached to the base plate 41. It is supported by the inner peripheral portion of the base body 40 via the base body 40. On the other hand, the rotary support 30 integrally has a ball receiving recess on the upper side of the bearing 45 on the lower surface of the inner peripheral portion thereof, and the upper surface of the inner peripheral portion of the rotary support 30 is via an annular slider 46. It is rotatably and slidably held by the annular holding plate 47.

The holding plate 47 has a cylindrical outer peripheral upright wall 47w, a slider holding portion 47s connected to the lower end of the outer peripheral standing wall 47w, and an inward flange connected to the inner peripheral end of the slider holding portion 47s. The flange portion 47f is integrally provided with the portion 47f, and the flange portion 47f is polymerized and fixed to the inner peripheral portion of the base plate 41 (hence, the base body 40) by a plurality of fixtures 48 (for example, rivets, bolts, etc.).

Further, between the rotation support 30 and the base body 40, a lock mechanism L capable of selectively locking the rotation support 30 (hence, the seat body S) to one of a plurality of rotation positions and a lock mechanism L are provided. It is usually possible to effectively exert the backlash suppressing mechanism G that suppresses the rattling of the rotating support 30 and the backlash suppressing function of the backlash suppressing mechanism G in a state where the rotary support 30 is locked at each rotation position. An interlocking mechanism I that interlocks the backlash suppressing mechanism G with the lock mechanism L is interposed so as to temporarily invalidate the backlash suppressing function according to the unlocking operation of the lock mechanism L. Next, specific examples of these mechanisms L, G, and I will be described in order.

The lock mechanism L is locked by being stretched between a bell crank-shaped lock lever 51 having an intermediate portion rotatably operably supported on the front portion of the rotary support 30 and a lock lever 51 and the rotary support 30. A lock spring 53 that urges the lever 51 in the locking direction (counterclockwise in FIGS. 3 and 4), a lock hole 32 provided in the intermediate standing wall 30w forming a short cylindrical shape of the rotary support 30, and the holding plate 47. The lock hole 42 is provided in the outer peripheral standing wall 47w, and the lock claw 54 is provided so as to project from the tip arm 51a of the lock lever 51 and can be engaged with and detached from the lock holes 32 and 42.

Thus, in the lock mechanism L, when the lock lever 51 is in the lock operation position shown by the solid line in FIGS. 3 to 5, the lock claw 54 engages with both the lock holes 32 and 42 to form the rotary support 30 (the lock mechanism L). Therefore, the rotation position of the seat body S) is locked. Further, when the lock lever 51 is unlocked and is in the unlocked position shown in FIG. 4 chain line or FIG. 6, the lock claw 54 is at least separated from the lock hole 42 so that the rotary support 30 is relative to the base body 40. Rotation is allowed, which allows the seat body S to be rotated to any rotation position.

Only one lock hole 32 is arranged around the lock lever 51 corresponding to the lock claw 54, but the lock hole 42 corresponds to a plurality of rotation positions of the seat body S to be locked by the lock mechanism L. Multiple are placed. For example, in the illustrated example, the rotation position of the seat body S is selected in two stages: a front rotation position in which the seat body S faces forward and a back rotation position in which the seat body S is 180 degrees out of phase and faces backward. As is possible, the lock holes 42 are set to positions that are 180 degrees out of phase with the front and rear of the holding frame 47, as is apparent from FIGS. 2 and 3.

The base arm 51b of the lock lever 51 projects forward from the lower front portion of the seat seat portion Sb, and functions as an operation lever that can be manually operated by the occupant. Then, the base arm 51b of the lock lever 51 is interlocked and connected to the interlocking mechanism I as described later.

The interlocking mechanism I interlocks the swing operation of the lock lever 51 with the interlocking member 60 which is arranged concentrically with respect to the bearing 45 on the outer side in the radial direction and is rotatably and slidably supported by the rotary support 30. It is provided with a linking mechanism 59 linked to the member 60.

The interlocking member 60 is integrally connected to the interlocking member main body 61, which is formed in the shape of a circular ring plate and rotates relative to the rotary support 30 in response to the locking / unlocking of the lock mechanism L, and the interlocking member main body 61. A drive unit 62 that drives the main body portion 71 of the backlash suppression member 70, which will be described later, to the suppression release position side via the driven portion 72 in response to the unlock operation of the lock mechanism L is integrally provided.

The inner peripheral portion of the interlocking member main body 61 is rotatably and concentrically fitted and supported on the outer periphery of the intermediate standing wall 30w of the rotary support body 30, and the lower surface of the interlocking member main body 61 is a spring support member 77 described later. It is slidably supported on the upper surface of the base 77b. Then, a bracket portion 61b projecting outward (front side) in the radial direction is integrally projected from the outer peripheral front portion of the interlocking member main body 61.

The linking mechanism 59 is slidably engaged with a long hole or slit 61bs provided at the tip of the bracket portion 61b and slidably engaged with the long hole or slit 61bs, and is fixed to an intermediate portion of the base arm 51b of the lock lever 51. It is provided with an engaging pin 51k. For example, when the lock lever 51 is unlocked in the unlocking direction (clockwise in FIG. 4: the direction of the white arrow), the lock lever 51 slides in the elongated hole or the slit 61bs while the engaging pin 51k slides. Is transmitted to the bracket portion 61b to rotate the interlocking member 60 in the same direction by a predetermined angle.

Thus, the interlocking mechanism I transmits the movement of the lock lever 51 to the backlash suppressing member 70 via the interlocking member 60. For example, the lock lever 51 is unlocked against the elastic force of the lock spring 53. When the lock release operation is performed in the direction (the direction seen by the white arrow in FIG. 4), the interlocking member 60 is temporarily disabled according to the operation, and the backlash suppressing member 70 is temporarily disabled as shown in FIGS. 6 and 9 (B). Rotate in the direction of conversion (that is, holding in the restraint release position).

Next, with reference mainly to FIGS. 5 to 9, an example of a backlash suppressing mechanism G that suppresses rattling of the rotating support 30 while the rotational position of the rotating support 30 is locked by the lock mechanism L will be described. .. The backlash suppressing mechanism G has a backlash suppressing member 70 as a main component, which is in close contact with the base body 40 and the rotary support 30 to suppress the rattling. That is, the backlash suppressing member 70 is located on the radial outer side of the bearing 45, and is radially slidably arranged at the four corners of the rotary support 30 having a substantially rectangular shape in a plan view. ..

Further, at least a part of the backlash suppressing member 70 is a connecting portion which overlaps with the connecting portion 31 including the bolt 31b between the seat body S and the rotary support 30 in a plan view, and also connects the base body 40 to the floor portion 16. (That is, it is also arranged at a position where it overlaps with the front-rear slide mechanism SL).

As is clear from FIGS. 5 to 9, the main body portion 71 of the backlash suppressing member 70 is vertically flat and long in the radial direction, and is supported by the rotary support 30 so as to be slidable in the radial direction. The tapered tapered portion 71a of the main body 71 can be inserted and removed between the first receiving portion 81 fixed to the base body 40 and the second receiving portion 82 fixed to the rotary support 30, and between them. It is configured so that it can be pushed and pressed in a wedge shape.

That is, the tip portion 71a of the main body portion 71 has a first pressure contact surface 71f1 whose horizontal and flat upper surface can be pressure-contacted to the first receiving portion 81, and the lower surfaces of both side portions of the tip portion 71a in the width direction are the first. 2 A pair of second pressure contact surfaces 71f2 that can be pressure contacted with the receiving portion 82. The second pressure contact surface 71f2 is formed on an inclined surface having an upward slope toward the tip of the main body portion 71.

On the upper surface of the base portion 71b of the main body portion 71, the main body portion 71 is driven in a direction opposite to the pushing direction to the first and second receiving portions 81 and 82 during the unlocking operation of the lock mechanism L to suppress backlash. A driven portion 72 that receives a driving force that invalidates 70 from the interlocking member 60 (more specifically, the driving portion 62) is projected upward.

The first receiving portion 81 is formed of a box shape having an open radial inward side (that is, a side facing the main body portion 71), and is composed of a ceiling wall 90t of a frame body 90 erected and fixed on a base body 40. To. The ceiling wall 90t is extended inward in the radial direction, so that a sufficient contact area of the main body 71 with the first pressure contact surface 71f1 can be secured.

Further, the second receiving portion 82 is composed of a pair of support frames 91 which are formed in an L-shape in a side view and project downward from the lower surface of the rotary support 30, and are formed by an inclined upper surface of the tip portion. The pair of second pressure contact surfaces 71f2 of the restraining member 70 are slidably abutted and supported. Both support frames 91 support the intermediate portion of the main body portion 71 so as to be slidable in the radial direction on each base portion side.

A ridge 71t extending in the sliding direction is provided on either one of the facing surfaces (that is, sliding surfaces) between the inner surface of the base of the pair of support frames 91 and the left and right side surfaces of the main body 71, and the other. A concave groove 91o that engages with the ridge 71t in an uneven manner is formed in each of the grooves 91o. As a result, the support frame 91 that supports the main body 71 to the rotary support 30 so as to be slidable in the radial direction is also used as the second receiving portion 82 that cooperates with the backlash suppressing member 70 to perform the backlash suppressing function. Structural simplification can be achieved.

Then, a part of the main body portion 71 and a part of the first and second receiving portions 81 and 82 overlap with the joint portion 31 of the seat body S and the rotary support 30 in a plan view. In this case, the main body portion 71 of the backlash suppressing member 70 can be extended to a position directly below the joint portion 31 without difficulty because it is formed long in the radial direction.

Further, in the embodiment, a plurality of sets of backlash suppressing members 70 and a plurality of spring support members 77 are arranged at intervals in the circumferential direction of the rotary support 30 (that is, at the four corners of the rotary support 30). As a result, the play suppressing member 70, the first and second receiving portions 81, 82 and the like can be deployed reasonably and compactly by utilizing the spaces at the four corners of the rotary support 30 and the base body 40.

As is clear from FIGS. 5 to 9, the driven portion 72 of the backlash suppressing member 70 is formed in a pin shape protruding upward from the upper surface of the base portion of the main portion 71, and is formed with the driving portion 62 of the driven portion 72. The facing surface is formed into a semi-cylindrical surface. Further, the drive portion 62 of the interlocking member 60 is composed of a flat plate-shaped cam body inclined toward the driven portion 72 toward the outward side in the radial direction from the outer peripheral portion of the interlocking member main body 61. The upper end of the driven portion 72 is integrally connected to a flat reinforcing plate portion 61t integrally extending radially outward from the upper portion of the outer circumference of the interlocking member main body 61, whereby the driven portion 72 is reinforced.

Thus, as is clear from FIG. 9, the drive portion 62 of the interlocking member 60, which rotates in conjunction with the unlocking operation of the lock mechanism L, slides the driven portion 72 (hence, the main portion 71) in the radial direction. It can be driven to the side, whereby the main body 71 can be pulled out from between the first and second receiving parts 81 and 82 (that is, the backlash suppressing function of the backlash suppressing member 70 is invalidated), and with this pulling out, Rotation of the rotation support 30 to any rotation position is also allowed.

Further, in the embodiment, a spring 76 and a spring 76 that apply a radial outward elastic force capable of pushing and pressing the main body 71 between the first and second receiving portions 81 and 82 to the backlash suppressing member 70. A spring support member 77 that supports the base end of the rotary support 30 is provided on the radial inward side of the main body 71. In the spring support member 77, both ends in the circumferential direction of the base portion 77b inward in the radial direction are fixed by bolts 95 of the rotary support 30, and the base end of the spring 76 made of a coil spring is fitted to the base portion 77b. Pin 77p is projected. Further, the spring support member 77 slidably supports the lower surface of the base portion of the main body portion 77 at the tip portion 77c of the spring support member 77.

Thus, in a state where the locking mechanism L locks the rotary support 30 to a desired rotational position, the spring 76 supported by the rotary support 30 via the spring support member 77 is based on the elastic force thereof. By pushing the main body portion 71 (play suppression member 70) between the first and second receiving portions 81 and 82, a wedge action can be exerted, whereby the rolling support 30 (hence, the seat body S) can be rotated. ) Can suppress rattling. Moreover, the spring support member 77 has an interlocking member receiving portion 77ha on which the upper surface of the base portion 77b of the spring supporting member 77 supports the interlocking member 60 (interlocking member main body 61) in a relative rotatable manner.

Thus, the spring support member 77 that supports the base end of the spring 76 can also be used as each support means that slidably supports the interlocking member 60 and the backlash suppressing member 70 (main body portion 71), which contributes to structural simplification. be able to.

Further, the first and second receiving portions 81 and 82 are arranged so as to face each other in the vertical direction, and when the main portion 71 is pushed and pressed between the two receiving portions 81 and 82, the main portion 71 Can be reliably sandwiched in the vertical direction, so that the main body portion 71 (play suppression member 70) can be more effectively suppressed from rattling up and down.

Next, the operation of the embodiment will be described. The backlash suppressing member 70 of the embodiment is arranged radially outward from the bearing 45, and by this arrangement, the contact point of contact of the backlash suppressing member 70 with the rotary support 30 and the base body 40 is set to the rotary support 30. Can be moved away from the center of rotation of. As a result, the backlash suppressing effect of the backlash suppressing member 70 can be exerted more strongly than the conventional device due to the relationship of the lever ratio from the center of rotation.

Further, as the weight of the occupant sitting on the seat seat Sc moves back and forth and to the left and right, the load distribution received from the seat body S by the rotary support 30 is biased, and rattling occurs between the rotary support 30 and the base body 40. There is a risk of In this case, in the embodiment, at least a part of the backlash suppressing member 70 is arranged at a position overlapping the joint portion 31 including the bolt 31b between the seat body S and the rotary support 30 in a plan view, so that the joint portion 31 is arranged. The backlash suppressing member 70 located directly below (that is, the load input location from the seat body S to the rotary support 30) can more effectively exert the rattling suppressing effect. As a result, the rattling of the rotary support 30 is effectively suppressed.

Further, at least a part of the backlash suppressing member 70 is arranged at a position where the base body 40 overlaps with the connecting portion (front-rear slide mechanism SL) connected to the vehicle body floor portion 13 in a plan view. That is, the backlash suppressing member 70 is arranged so as to overlap the connecting portion (front-rear slide mechanism SL) between the base body 40 that receives the backlash suppressing member 70 via the first receiving portion 81 and the vehicle body floor portion 13 in a plan view. The suppressing effect can be more effectively exerted, and the rattling of the rotary support 30 can be suppressed more efficiently.

Further, the rotary support 30 and the base 40 of the embodiment are formed in a substantially rectangular shape in a plan view, and the backlash suppressing member 70 is supported by the four corners of the rotary support 30 so as to be slidable in the radial direction. A main body portion 71 that can move between the backlash suppression position and the suppression release position is provided, and the main body portion 71 is fixed to the first receiving portion 81 fixed to the four corner portions of the base body 40 and the four corner portions of the rotary support 30. It has a tapered tapered portion 71a that can be pushed and pressed in a wedge shape between the two receiving portions 82 of the above.

As a result, the backlash suppressing member 70 and the first and second receiving portions 81 and 82 that receive the backlash suppressing member 70 are compactly deployed by utilizing the dead spaces at the four corners of the rotary support 30 and the base body 40, each of which has a rectangular shape. It will be possible. Further, even if the main portion 71 of the backlash suppressing member 70 that can slide in the radial direction is formed longer in the sliding direction (diameter direction) of the main portion 71, the main portion 71 can be reasonably arranged at the four corners of the rotary support 30. Not only that, it can be extended to just below the joint portion 31 located at the four corners thereof without difficulty.

Further, a spring support member 77 for supporting the spring 76 that constantly urges the main body 71 of the backlash suppression member 70 toward the backlash suppression position is fixed to the four corners of the rotary support body 30, and the spring support member 77 is fixed. In addition, since the main body portion 71 of the backlash suppressing member 70 is supported so as to be slidable in the radial direction, the spring supporting member 77 is also used as a sliding guiding means for the backlash suppressing member 70, and the structure of the device can be simplified accordingly. ..

Further, the interlocking member 60 is formed in a circular ring plate shape and is arranged concentrically with respect to the bearing 45 on the radial outer side thereof, and rotates relative to the rotary support 30 according to the lock / unlock of the lock mechanism L. An interlocking member main body 61 that can be supported and a drive unit 62 that is connected to the interlocking member main body 61 and drives the main body portion 71 to a restraint release position in response to an unlocking operation of the lock mechanism L are integrally provided. As a result, the lock mechanism L and the backlash suppressing member 70 can be linked to each other via the interlocking member 60 regardless of the circumferential position of the lock mechanism L, and the degree of freedom in designing the lock mechanism L is increased accordingly. Be done.

Further, since the support frame 91 having the second receiving portion 82 integrally and fixed to the four corners of the rotary support 30 supports the main body portion 71 so as to be slidable in the radial direction, the support also serves as the second receiving portion 82. The frame 91 is also used as a sliding guide means for the backlash suppressing member 70, and the structure of the device can be simplified accordingly.

Further, since the interlocking member main body 61 is rotatably and slidably supported by the spring support member 77 fixed to the four corners of the rotary support body 30, the spring support member 77 is also used as a sliding support means for the interlocking member 60. Therefore, the structure of the device can be simplified accordingly.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto, and various design changes can be made without departing from the gist thereof.

For example, in the above-described embodiment, the rotation position of the seat body S is divided into two rotation positions, that is, a front rotation position in which the seat body S faces forward and a back rotation position in which the seat body S is 180 degrees out of phase and faces backward. However, the rotation position of the seat body S that can be arbitrarily selected is not limited to the embodiment and the reference embodiment. That is, the rotation position may be changed or set, or 3 or more may be set. In that case, the opening position of the lock hole 42 on the base body 40 side is changed according to the set rotation position. Or add more.

L ... Lock mechanism S ... Seat body SL ... Front and rear slide mechanism Sc ... Seat seat 10 ... Seat device 11a ... Side frame 16・ ・ ・ ・ Floor part 30 ・ ・ ・ ・ Rotating support 31 ・ ・ ・ ・ Joint part 31b ・ ・ ・ Bolt 40 ・ ・ ・ ・ Base body 45 ・ ・ ・ ・ Bearing 60 ・ ・ ・ ・ Interlocking member 61 ・ ・ ・・ Interlocking member main body 62 ・ ・ ・ ・ Drive unit 70 ・ ・ ・ ・ Rattling suppression member 71 ・ ・ ・ ・ Main part 71a of the backlash suppressing member ・ ・ ・ Tip part of the backlash suppressing member 76 ・ ・ ・ ・ Spring 77 ・ ・ ・・ Spring support members 81, 82 ・ ・ 1st and 2nd receiving parts 91 ・ ・ ・ ・ Support frame

Claims (9)

A base body (40) connected to and supported by the floor portion (16) of the vehicle body, and a rotary support body (30) connected to the seat body (S) so as to rotate integrally and supporting the seat body (S). , A bearing (45) that rotatably supports the rotary support (30) on the base body (40) around the vertical axis, and provided between the base body (40) and the rotary support (30). A lock mechanism (L) capable of selectively locking the rotary support (30) to one of a plurality of rotational positions, and the rotary support (30) are locked in the rotational position by the lock mechanism (L). In this state, a backlash suppressing member (70) that suppresses rattling of the rotary support (30) in a contact state in which the rotary support (30) and the base body (40) are in close contact with each other. The backlash suppressing member (70) is released so that the backlash suppressing member (70) releases the contact state in response to the locking mechanism (L) unlocking the rotational position of the rotation support (30). In a vehicle seat device provided with an interlocking member (60) interlocked with the lock mechanism (L).
The backlash suppressing member (70) is arranged radially outward of the bearing (45), and at least a part of the backlash suppressing member (70) is the seat body (S) and the seat body (S) in a plan view. A vehicle seat device characterized in that it is arranged at a position overlapping with a joint portion (31) between the rotary supports (30). At least a part of the backlash suppressing member (70) is arranged at a position where the base body (40) overlaps with the connecting portion (SL) connected to the floor portion (16) in a plan view. , The vehicle seat device according to claim 1. The seat seat portion (Sc) on which the occupant sits on the seat body (S) includes left and right side frames (11a) serving as skeletons on both left and right sides of the seat seat portion (Sc).
The joint portion (31) is a joint portion including a bolt (31b) that connects the left and right side frames (11a) and the left and right side portions of the rotary support (30), respectively. The vehicle seat device according to claim 1. The rotary support (30) and the base body (40) are formed in a substantially rectangular shape in a plan view.
The backlash suppressing member (70) is supported by the four corners of the rotary support (30) so as to be slidable in the radial direction, and is movable between a predetermined backlash suppressing position and a restraining releasing position (71). Equipped with
The main body portion (71) has a first receiving portion (81) fixed to the four corner portions of the base body (40) and a second receiving portion (82) fixed to the four corner portions of the rotary support body (30). The vehicle seat device according to claim 1, further comprising a tapered tip portion (71a) capable of being pushed and pressed in a wedge shape between the two. A spring support member (77) for supporting the spring (76) that constantly urges the main body portion (71) toward the backlash suppression position is fixed to the four corner portions of the rotary support body (30). The vehicle seat device according to claim 4, wherein the main body portion (71) is slidably supported by the spring support member (77). The interlocking member (60) is formed in the shape of a circular ring plate and is arranged concentrically with respect to the bearing (45) on the outer side in the radial direction thereof, and in response to the locking / unlocking of the locking mechanism (L). The interlocking member main body (61) that can rotate relative to the rotary support (30) and the interlocking member main body (61) are connected to the interlocking member main body (61), and the main body portion (71) is moved to the restraint release position in response to the unlocking. The vehicle seat device according to claim 4, further comprising a drive unit (62) that drives the vehicle integrally. A support frame (91) integrally having the second receiving portion (82) and fixed to the four corner portions of the rotary support (30) supports the main body portion (71) so as to be slidable in the radial direction. The vehicle seat device according to claim 4, wherein the vehicle seat device is characterized by the above. A spring support member (77) for supporting the spring (76) that constantly urges the main body portion (71) toward the backlash suppression position is fixed to the four corner portions of the rotary support body (30). The vehicle seat device according to claim 6, wherein the interlocking member main body (61) is rotatably and slidably supported by the spring support member (77). The first and second receiving portions (81, 82) are arranged so as to face each other in the vertical direction.
The vehicle seat according to claim 4, wherein the tip portion (71a) can be inserted so as to be sandwiched between the first and second receiving portions (81, 82) in the vertical direction. Device.

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