JP2009149219A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To change the direction of a sitting attitude by rotating and moving a seat body in a turning direction by using a mechanism to move the seat body in a width direction in relation to a floor surface. <P>SOLUTION: In this seat, the seat body 1 to be a sitting part is disposed to face to the front on the floor surface F. The seat body 1 is supported by a seat supporting member 7 disposed to be movable in the horizontal direction in relation to the floor surface F on a supporting base 6 installed on the floor surface F. The seat supporting member 7 is rotated in the turning direction or is moved in the width direction in relation to the floor surface F since two portions of the longitudinal direction are individually pushed and operated in the width direction by movements that two cam members 8 and 9 disposed on the supporting base 6 are rotated and supported. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat in which a seat body serving as a seating portion is disposed facing the front on a floor surface.

  2. Description of the Related Art Conventionally, a technique is known in which a vehicle seat is slid in the vehicle width direction in addition to the vehicle front-rear direction. For example, in Patent Document 1 below, a tire house that protrudes from the side of the vehicle body is provided as an obstacle at a sliding destination in the front-rear direction of the vehicle seat, and this is achieved by sliding the vehicle seat in the width direction. A technique that can avoid interference with an obstacle is disclosed.

Japanese Patent Laid-Open No. 10-181393

  However, in the prior art disclosed above, the mechanism for moving the vehicle seat in the width direction moves the vehicle seat in the width direction without changing the posture direction of the seat body serving as the seating portion. Thus, for example, if the seat body can be oriented toward the entrance / exit door using a mechanism that moves in the width direction, the seated person can enjoy the scenery outside the vehicle in the normal seating posture state. is there.

  The present invention was devised as a solution to the above-described problems, and the problem to be solved by the present invention is to use a mechanism for moving the seat body in the width direction with respect to the floor surface. It is to be able to change the direction of the seating posture by rotating and moving in the turning direction.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
A first invention is a vehicle seat in which a seat body serving as a seating portion is disposed facing the front on a floor surface. The seat body is supported by a seat support member arranged on a support base installed on the floor surface so as to be movable in a horizontal direction with respect to the floor surface. The seat support member is configured such that two parts in the front-rear direction are individually pushed in the width direction by the movement of the two cam members disposed on the support base. In contrast, it rotates in the turning direction or moves in the width direction.
According to the first aspect of the invention, the seat support member that supports the seat body is operated to push the two front and rear portions in the width direction by the two cam members. At this time, when the two parts in the front and rear of the seat support member are pushed in the same manner by the cam members, the seat body is moved in the width direction with respect to the floor surface. Further, when either one of the front and rear portions of the seat support member is pushed more greatly than the other portion, the seat body is rotated in a direction of turning with respect to the floor surface. As described above, the seat body is moved in the width direction and the turning direction without any movement in the front-rear direction by the movement of the cam member in the width direction.

Next, according to a second aspect of the present invention, in the first aspect described above, the seat support member supporting the seat main body is supported in a state in which movement in the front-rear direction is restricted and movement in the width direction is permitted. It is connected to.
According to the second aspect of the invention, the connecting portion of the sheet support member with respect to the support base moves only in the width direction with respect to the support base by being pushed by each cam member.

Next, according to a third aspect, in the first or second aspect described above, the two cam members that push the sheet supporting member in the width direction are operated in conjunction with each other. Yes. The cam shape that pushes the sheet support member of each cam member in the width direction first pushes one of the front and rear portions of the sheet support member in the width direction by these interlocking rotational movements, and then With the further rotation, the shape of the other side of the sheet support member is pushed in the same direction.
According to the third aspect of the invention, the seat body is first rotated in the turning direction with respect to the floor surface to change its direction along with a series of movements of the cam members. Then, as the cam member further rotates, the other side of the seat support member is pushed in the same direction, so that the posture of the seat body is redirected to the front again. The whole is moved in the width direction.

The present invention can obtain the following effects by taking the above-described means.
First, according to the first aspect of the present invention, the seat body is moved in the width direction with respect to the floor surface by the two cam members configured to push the front and rear portions of the seat support member in the width direction. Using the mechanism for moving the seat body, the seat body can be rotated in the turning direction so that the seating posture can be changed.
Furthermore, according to the second aspect of the invention, since the connecting portion of the sheet support member with respect to the support base can be moved only in the width direction, the seat body is not moved in the front-rear direction. It can be moved in the width direction or rotated in the turning direction.
Further, according to the third invention, in the course of a series of operations for rotating each cam member, a state in which the seat body is rotated in the turning direction and a state in which it is moved in the width direction by the cam shape of each cam member. The operation can be easily performed.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

First, the configuration of the vehicle seat according to the first embodiment will be described with reference to FIGS.
Here, FIG. 1 is a perspective view showing a schematic configuration of the vehicle seat of the present embodiment. This vehicle seat is disposed as a seat for a car, and is installed on the floor surface F with the seat body 1 facing the front of the vehicle as indicated by the solid line in FIG. Therefore, in this state, the posture direction of the seated person seated on the seat body 1 is also directed toward the front of the vehicle.
The seat body 1 includes a seat back 2 serving as a backrest portion, a seat cushion 3 serving as a seating portion, and a headrest 4 that supports the head. The seat body 1 can adjust the seating position in the front-rear direction with respect to the floor surface F by a pair of left and right slider mechanisms 5 provided between the seat cushion 3 and the floor surface F. 2, the slider mechanism 5 slides in the front-rear direction along a pair of lower rails 5L, 5L fixedly installed on the floor surface F and extending in the front-rear direction, and the guide shapes of the lower rails 5L, 5L. And a pair of upper rails 5U, 5U provided movably. The seat body 1 is connected to the above-described upper rails 5U, 5U, and is slidably moved in the front-rear direction of the vehicle integrally with the upper rails 5U, 5U.

A mechanism that can move the sheet main body 1 horizontally with respect to the floor surface F in the width direction is provided between the sheet main body 1 and the slider mechanism 5. This mechanism is assembled on a flat plate-like support base 6 fixedly installed on the upper rails 5U, 5U, and moves the seat body 1 in the width direction in accordance with a manual operation for moving the operation member 11 in the left-right direction. It is supposed to be.
Specifically, the sheet main body 1 is moved and operated in the width direction as follows in accordance with the manual operation of the operation member 11. That is, as indicated by the phantom lines in FIG. 1, when the operating member 11 is slid to the left, for example, on the vehicle outer side (entrance door side), the front part of the seat body 1 is transferred in the sliding movement direction. In this way, it turns and rotates with respect to the floor surface F. Thereby, the attitude | position direction of the seat main body 1 can be turned to the entrance / exit door side, and a seated person can enjoy the scenery outside a vehicle in a normal seating attitude state.
Contrary to the above, when the operation member 11 is slid to the right as viewed in the figure, which is the inside of the vehicle, this time, the front part of the seat body 1 is transferred to the floor surface F in the form of being transferred in the sliding movement direction. Rotate and rotate. As a result, the posture of the seat body 1 can be directed to the adjacent seat side adjacent to the seat body 1, and communication with the seated person of the adjacent seat can be facilitated.

Then, when the operation member 11 is further slid to the inside of the vehicle (right side in the drawing) from the state in which the seat body 1 is directed inward, the seat body 1 next moves its rear part in the same sliding movement direction. Operated. As a result, the entire sheet body 1 is moved in the same slide movement direction (width direction).
Note that the movement of the seat body 1 with respect to the floor surface F described above is collectively shown in FIG. As shown in the figure, the seat body 1 is slid in the width direction described above even when the tire house H protrudes as an obstacle on the moving path in the vehicle longitudinal direction. The vehicle can be slid in the longitudinal direction of the vehicle while avoiding the movement. The seat body 1 can turn and rotate toward the inside and outside of the vehicle at each slide position avoiding the tire house H.

Hereinafter, a mechanism for moving the seat body 1 as described above will be described.
The mechanism for moving the seat body 1 in the width direction with respect to the floor surface F includes a link plate-shaped seat support member 7 assembled on the support base 6 as shown in FIG. The sheet body 1 is moved in the width direction by being pushed and pulled in the width direction.
Specifically, this mechanism includes a seat support member 7 assembled on the support base 6, cam members 8 and 9, a driving gear 10, an operation member 11, a toothed belt 12, and a tension spring 13. Consists of.
Specifically, the support base 6 is formed in a flat plate shape, and the lower surface portion thereof is integrally fixed to the upper surface portions of the upper rails 5U and 5U described above.
The seat support member 7 is formed in a link plate shape, and is integrally assembled to the lower surface portion of the seat cushion 3. Thereby, the sheet | seat support member 7 can move the sheet | seat main body 1 to the width direction integrally with this with the movement pushed / pulled in the width direction.

The seat support member 7 is disposed with its link length direction facing the front-rear direction of the vehicle, and a long hole 7H that extends short in the link length direction is formed at the front end portion thereof. The front end of the sheet support member 7 is connected to the support base 6 by a pin 7Pf inserted through the long hole 7H, and the rear end is connected to the support base 6 by a pin 7Pr.
Specifically, the pins 7Pf and 7Pr provided on the sheet support member 7 are inserted into the long holes 6Hf and 6Hr formed in the support base 6 in the width direction so as to be slidable. As a result, the sheet support member 7 is configured such that the front and rear end portions thereof are slid only in the width direction along the hole shapes in which the long holes 6Hf and 6Hr extend.
Here, the pin 7Pf provided at the front end portion of the sheet support member 7 can be slid in the front-rear direction along the shape of the elongated hole 7H formed in the sheet support member 7. As a result, as shown in FIGS. 4 and 5, the seat support member 7 moves so that its front end portion slides greatly in the width direction with respect to the rear end portion, and the front pin 7Pf described above has the long hole 7H. It can be absorbed by the movement of sliding in the front-rear direction.
Returning to FIG. 2, the sheet support member 7 is normally urged in a direction to contract the shape of the tension spring 13 by a tension spring 13 hooked between the sheet support member 6 and the support base 6. As shown in FIG. 3, the tension spring 13 is hooked on a spring hook portion 7 </ b> F that protrudes from the sheet support member 7 at the left end in the drawing, and the right end in the drawing is the support base 6. Is hooked on a spring hooking portion 6F formed to protrude from the hook. As a result, the pins 7Pf and 7Pr provided at the front and rear end portions of the seat support member 7 are respectively pressed against the outer peripheral surface of the cam plate 8C of the cam member 8 and the outer peripheral surface of the cam plate 9C of the cam member 9 described later. It is held in the applied posture state.
In the state where the seat support member 7 is in the normal position before the seat body 1 is moved and operated in the width direction, as shown in the figure, the posture state in which the link length direction is directed in the longitudinal direction of the vehicle. Is held as.

Next, returning to FIG. 2, the cam member 8 will be described. That is, the cam member 8 is an integrated part in which a flat cam plate 8C having an undulating outer peripheral surface, a driven gear 8G having external teeth, and a toothed pulley 8T are stacked in the plate thickness direction. It is formed as. The cam member 8 is pivotally connected to the support base 6 so that the pin 8P protruding from the rotation shaft core of the toothed pulley 8T is inserted into the support base 6 from the lower surface side. Has been.
As shown in FIG. 3, the cam member 8 is assembled to the above-described driven gear 8G in a state where a driving gear 10 that is rotated by a slide operation of an operation member 11 described later is engaged with the driving gear 10 so that power can be transmitted. . As a result, the cam member 8 is rotated by the slide operation of the operation member 11, and pushes the pin 7Pf on the front end side of the sheet support member 7 pressed against the undulating outer peripheral surface of the cam plate 8C in the width direction. Pulling is possible.
Here, in a part of the cam plate 8C in the circumferential direction, a groove Cd whose outer peripheral surface is locally depressed is formed. As shown in FIG. 4, the groove Cd has a hole shape of a long hole 6Hf formed in the support base 6 when the cam member 8 is rotated in the counterclockwise direction shown in FIG. Aligned. As a result, the groove Cd can be moved in the width direction to the position of the right end in the figure of the long hole 6Hf in such a manner that the pin 7Pf is received inside the groove shape by the urging force of the tension spring 13. The recess-shaped inclined surface of the groove Cd is gently formed, and the pin 7Pf can be pushed out of the groove Cd by rotating the cam member 8 clockwise from the state shown in FIG. It has become.

Next, returning to FIG. 2, the cam member 9 will be described. That is, the cam member 9 is formed as an integral part in which a flat cam plate 9C having a undulating outer peripheral surface and a toothed pulley 9T are stacked in the plate thickness direction. The cam member 9 is pivotally coupled to the support base 6 so that the pin 9P protruding from the rotation shaft core of the toothed pulley 9T is inserted into the support base 6 from the lower surface side. Has been.
As shown in FIG. 3, the cam member 9 is attached to the cam member 8 by a toothed belt 12 wound between the toothed pulley 9T described above and the toothed pulley 8T of the cam member 8 described above. It is assembled in a meshed state so that power can be transmitted. As a result, the cam member 9 is rotated by the slide operation of the operation member 11 in conjunction with the cam member 8 and is pressed against the undulating outer peripheral surface of the cam plate 9C. The side pin 7Pr can be pushed and pulled in the width direction.

Next, returning to FIG. 2, the driving gear 10 will be described. The driving gear 10 is pivotally connected to the support base 6 by inserting a pin 10 </ b> P projecting from the rotation shaft core portion into the support base 6 from the lower surface side.
As described above with reference to FIG. 3, the driving gear 10 is assembled in such a state that its external teeth are engaged with the external teeth of the driven gear 8 </ b> G of the cam member 8 and the tooth portion 11 </ b> G formed on the operation member 11. And constitutes a gear train. As a result, the driving gear 10 transmits the operating force manually operated in the left-right direction to the cam member 8 to rotate the cam member 8 as shown in FIGS. It has become.

Next, returning to FIG. 1, the operation member 11 will be described. The operation member 11 is disposed at a lower position of the seat cushion 3 and can be slid in the left-right direction (width direction) by a manual operation of a seated person.
Specifically, as shown in FIG. 2, the operation member 11 is assembled to the lower surface portion of the support base 6 in a state where a slide operation can be performed in the width direction. As described above, the operation member 11 is assembled in a state in which the tooth portion 11G formed on the rear surface portion is engaged with the external teeth of the driven gear 8G. Thereby, the operating member 11 rotates the driven gear 8G in accordance with the sliding operation in the left-right direction, and moves the front part and the rear part of the sheet supporting member 7 that supports the seat body 1 in the width direction. It is supposed to be.

Then, the usage method of a present Example is demonstrated.
That is, as shown by the solid line state in FIG. 1, the seat body 1 is always held in a posture state facing the front of the vehicle before the operation member 11 is slid in the width direction.
Therefore, for example, in order to turn the seat body 1 from this state toward the outside (left side in the figure) which is the entrance / exit door side of the vehicle, the operation member 11 may be slid to the side on which it is desired to turn. . As a result, as shown in FIG. 4, the seat body 1 has the front portion of the seat support member 7 in the right direction in the drawing as the cam members 8, 9 are rotated along with the slide operation of the operation member 11. In response to the movement, the posture is changed to the right side (entrance door side) in the figure. That is, the seat body 1 is rotated in the turning direction in which the operation member 11 is slid. Accordingly, it is possible to enjoy the scenery outside the vehicle in a normal posture state where the seated person is seated on the seat body 1. The seat body 1 is returned to the original posture state facing the front of the vehicle by performing an operation of returning the operation member 11 to the slide position before the operation.

Returning to FIG. 1, in order to turn the seat body 1 from the front-facing state (solid line state) toward the inside of the vehicle (right side in the drawing), the operation member 11 is turned. Just slide to the side you want. As a result, as shown in FIG. 5, the seat body 1 has the front portion of the seat support member 7 in the left direction as shown in the figure as the cam members 8 and 9 rotate along with the slide operation of the operation member 11. The posture is changed to the left side (inner side) in the figure in response to the movement transferred to. Thereby, it can be set as the attitude | position state in which a seated person can easily communicate with the seated person of an adjacent seat.
Returning to FIG. 1, when the operation member 11 is further slid to the inside of the vehicle (right side in the drawing) from the state where the seat body 1 is directed toward the inside of the vehicle (the imaginary line state), the seat body 1 is Next, the whole is moved and operated inside the vehicle. Specifically, as shown in FIG. 6, when the operation member 11 is further slid in the illustrated leftward direction from the state of FIG. 5, the illustrated leftward direction until the position where the rear portion of the sheet support member 7 is aligned with the front portion is provided. Be transported. As a result, the entire seat support member 7 is moved in the left direction in the figure, and the seat body 1 is moved to the left side (inner side of the figure) in such a manner that the seat body 1 is directed again to the front of the vehicle in response to this movement. . The seat body 1 is returned to the original posture state facing the front of the vehicle before being moved in the width direction by performing an operation of returning the operation member 11 to the slide position before the operation. .

As described above, according to the vehicle seat of this embodiment, the two cam members 8 and 9 are configured to push and operate the two portions of the seat support member 7 in the width direction. By using a mechanism for moving the main body 1 in the width direction with respect to the floor surface F, the seat main body 1 can be rotated in the turning direction so that the seating posture can be changed.
Further, since the connecting portions (pins 7Pf, 7Pr) of the sheet support member 7 with respect to the support base 6 are configured to be movable only in the width direction, the sheet body 1 is moved in the front-rear direction. It can be moved in the width direction or rotated in the turning direction.
Further, in the course of a series of slide operations of the operation member 11 for rotating the cam members 8 and 9, the sheet body 1 is rotated in the turning direction by the cam shape of the cam members 8 and 9 and in the width direction. It is possible to switch to the moved state, and this operation can be easily performed.

Although the embodiment of the present invention has been described with respect to one example, the present invention can be implemented in various forms in addition to the above-described example.
For example, the mechanism for turning and rotating the seat body shown in the above embodiment can be applied not only to a vehicle such as an automobile but also to a seat for a vehicle such as an aircraft or a ship.
Further, although an operation member that performs a sliding operation in the width direction by a manual operation is shown as means for rotating the seat body, this operation means is not particularly limited. For example, a rotary operation type lever may be applied as the operation member, or the mechanism may be electrically driven by a switch switching operation.
In addition, the configuration was shown in which the seat support member is pressed against the outer peripheral surface of each cam member by the biasing force of the tension spring to follow the movement, but the state where the seat support member is brought into contact with the outer peripheral surface of each cam member is maintained. A guide shape may be provided.
In addition, the configuration in which the seat body moves in the same direction by further operation after the seat body turns to the inside of the vehicle by the slide operation of the operation member has been described, but such a configuration may be applied to the movement to the outside of the vehicle. .

1 is a perspective view illustrating a schematic configuration of a vehicle seat of Example 1. FIG. It is a disassembled perspective view of the vehicle seat. It is a schematic diagram showing the state which exists in the normal position before a sheet | seat main body is moved and operated in the width direction. It is a mimetic diagram showing the state where the seat main part was turned to the vehicles outside. It is a mimetic diagram showing the state where the seat main part was turned to the inside of vehicles. It is a mimetic diagram showing the state where the seat main part was slid and moved inside the vehicle. FIG. 7 is a schematic view summarizing the movement of the seat body shown in FIGS. 3 to 6.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat main body 2 Seat back 3 Seat cushion 4 Headrest 5 Slider mechanism 5U Upper rail 5L Lower rail 6 Support base 6F Spring hook part 6Hf Long hole 6Hr Long hole 7 Seat support member 7H Long hole 7Pf Pin 7Pr Pin 7F Spring hook part 8 Cam member 8P Pin 8T Toothed pulley 8G Driven gear 8C Cam plate Cd Groove 9 Cam member 9P Pin 9T Toothed pulley 9C Cam plate 10 Driving gear 10P Pin 11 Operation member 11G Tooth 12 Toothed belt 13 Tension spring F Floor surface H Tire house

Claims (3)

A seat for a vehicle in which a seat body serving as a seating portion is disposed facing the front on the floor surface,
The seat body is supported by a seat support member disposed on a support base installed on a floor surface so as to be movable in a horizontal direction with respect to the floor surface,
The seat support member is configured such that two parts in the front-rear direction are individually pushed in the width direction by the movement of the two cam members disposed on the support base. A vehicle seat that rotates in a turning direction or moves in a width direction relative to a surface. The vehicle seat according to claim 1,
The vehicle seat, wherein the seat support member that supports the seat body is connected to the support base in a state where movement in the front-rear direction is restricted and movement in the width direction is permitted. The vehicle seat according to claim 1 or 2, wherein
The two cam members that push the sheet supporting member in the width direction are operated in conjunction with each other.
The cam shape that pushes the sheet supporting member of each cam member in the width direction first pushes one of the front and rear portions of the sheet supporting member to one side in the width direction by these interlocking rotational movements, and then The vehicle seat has a shape that pushes the other side portion of the seat support member in the same direction by further rotation of the seat.

Images