JP2019137229A - Move mechanism of moved member and sheet for vehicle having move mechanism - Google Patents

Abstract

To provide a move mechanism which can hoist sitting parts corresponding to lengthwise move of an upper rail, and a sheet for vehicle having the move mechanism.SOLUTION: A move mechanism comprises: a moved member having a slant rail, a first moved member supporting a buttocks side, and a second moved member at front side of the first moved member supported rotatably with a shaft to the first moved member; a rear link member having a first shaft support part supported rotatably with a shaft by an upper rail, a first moved member attachment attached to the first moved member directly or indirectly, and a slide part shifting along the slant rail; and a front link member having an intermediate link member arranged rotatably in the front side of the second moved member, and a rotation link member having a second shaft support part supported rotatably with a shaft by the upper rail directly or indirectly and an intermediate link member shaft support part supported with a shaft rotatably by the intermediate link member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a moving mechanism for a member to be moved and a vehicle seat having the moving mechanism.

  Various lift-up mechanisms for raising and lowering a vehicle seat have been proposed. For example, Patent Document 1 discloses a rotating member that is rotated by a power source, and a first link member that is rotatably connected to a position (an output portion) whose one end is eccentric from the rotation center of the rotating member. There has been proposed a lifter device for a vehicle seat, comprising: a power conversion mechanism that transmits a displacement on the other end side of the first link member as a displacement in a height direction to a seating portion on which an occupant is seated.

  Such a lifter device includes a power change mechanism that can move the seat portion up and down and transmits the displacement of the other end portion of the first link member as a vertical displacement to the seat portion on which the occupant sits. The rotation is transmitted to the seating portion, so that the seating portion is not displaced in the horizontal direction as well as the vertical direction. Such a lifter device moves up and down in the same straight line as possible.

  The conventional lifting device including the lifting mechanism described in Patent Document 1 has been proposed in various ways with respect to the operation of the lifting mechanism, but is a mechanism that is configured independently as a lifting device. For example, there has been no slide in which the seat of the vehicle seat is moved up and down in association with the movement of the slide of the vehicle seat, that is, the slide of the slide rail. For this reason, there is a problem that the driver has to operate the vehicle seat back-and-forth movement and the seating section up-and-down movement separately. Further, in the case of the electric type, there is a problem that two power units for back and forth movement and for up and down movement must be prepared.

Japanese Patent Laid-Open No. 2017-24608

  The present invention has been made in view of the above problems, and a moving mechanism for a movable member capable of moving up and down and other movements of a seating portion and the like corresponding to the forward and backward movement of the upper rail, and a vehicle having the moving mechanism. The main purpose is to provide seats.

  Furthermore, the present invention adjusts the distance to the floor surface or the pedal by moving the tilt part in front of the seat up and down in accordance with the up and down movement of the seating part in accordance with the back and forth movement of the vehicle seat. It is also an object of the present invention to provide a moving mechanism for a member to be moved that has improved the securing of the property, and a vehicle seat having this moving mechanism.

  The present invention adopts the following means in order to achieve at least one of the above-mentioned main objects.

The moving mechanism of the member to be moved according to the present invention is:
Lower rail,
An upper rail slidably provided on the lower rail;
An inclined rail arranged to have an angle with respect to the lower rail;
A first moving member that supports at least the buttocks side; and a second that is rotatably supported by the first moving member on the front side of the first moving member and supports at least a part of the thigh. A moved member having a moved member;
A first shaft support portion that is rotatably supported directly or indirectly on the upper rail, a first moving member mounting portion that is directly or indirectly mounted on the first moving member, and along the inclined rail A rear link member having a moving slide part;
An intermediate link member rotatably disposed on the front side of the second moving member, a second shaft support portion pivotally supported directly or indirectly on the upper rail, and rotatable on the intermediate link member A rotation link member having an intermediate link member shaft support portion pivotally supported by the front link member,
It is provided with.

  According to the moving mechanism according to the present invention, by moving the upper rail forward, the rear link member and the front link member cause the rear side of the moved member to rise and the front side to move downward. Therefore, when used for a vehicle seat, when the vehicle seat is moved rearward, the seat portion is disposed on the rear side, the seat portion is disposed at a low position, and the thigh is disposed at a high position. . Therefore, the hip point can be set at a low position, and the line of sight becomes a low position, but the leg portion can be prevented from being cramped. On the other hand, when the vehicle seat is moved forward, the seat is disposed on the front side, the seat is disposed at a high position, and the thigh is disposed at a low position. As a result, the hip point is high and the line of sight is high, but the thigh is placed in a low position, so that it has good footing and can prevent the foot from reaching the pedal or the floor. .

Further, in the moving mechanism according to the present invention, when the upper rail is located at the rearmost position, the upper surface of the tip of the second moving member is positioned above the upper surface of the first moving member,
When the upper rail is positioned at the forefront, the upper surface of the tip may be positioned below the upper surface of the first moved member.

  By adopting such a configuration, the hip point and the leg can be arranged at appropriate positions according to the height of the person to be seated and the length of the leg.

  Furthermore, in the moving mechanism according to the present invention, the rotary link member is formed in a triangular plate shape, and at least a part thereof is directly or indirectly attached to the first moved member. It may be.

  By adopting such a configuration, the movement of the first moved member can be directly transmitted to the rotary link member, so that the front link member can be moved more stably.

  Further, in the moving mechanism according to the present invention, the rotary link member may include a biasing member that biases in a certain direction.

  By adopting such a configuration, it is possible to easily perform the operation of moving the upper rail that is difficult to apply force forward.

Furthermore, in the moving mechanism according to the present invention,
The inclined rail is composed of a long member having a cross section that can accommodate a roller,
The slide part has two rollers with two axles shifted, one of the rollers abuts on the top surface of the inclined rail, and the other roller abuts on the bottom surface of the inclined rail. It may be.

  By adopting such a configuration, it is possible to reduce the backlash of the slide portion in the inclined rail when the roller presses both the upper surface and the bottom surface.

  Furthermore, this invention provides the vehicle seat which has the moving mechanism mentioned above.

Furthermore, in the vehicle seat according to the present invention, the moving mechanism is provided on the slide rails on the left and right sides,
The rollers of the moving mechanism on both sides may be arranged symmetrically with respect to each other.

  By adopting such a configuration, the rattling of the vehicle seat can be effectively reduced.

FIG. 1 is a perspective view schematically showing the configuration of a moving mechanism 100 for a member to be moved according to the present embodiment and a vehicle seat 200 having the moving mechanism. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a rear view of the moving member moving mechanism 100 according to the present embodiment. FIG. 4 is a schematic diagram showing the movement of the moving mechanism 100 for the member to be moved and the vehicle seat 200 having this moving mechanism according to the present embodiment.

  Next, an embodiment of a moving member moving mechanism and a vehicle seat having the moving mechanism according to the present invention will be described in detail with reference to the drawings, taking a vehicle seat of an automobile as an example. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and do not depart from the gist of the present invention. The range can be changed as appropriate. In addition, in this embodiment, although the example applied to the vehicle seat is demonstrated as a representative example, the use place is not limited to a vehicle seat, It can be used for the seat for various vehicles. For convenience of explanation, directions indicated by arrows in FIG. 1 are described as “up”, “down”, “front”, “back”, “right”, and “left”, respectively.

  An embodiment of a vehicle seat 200 using the moving mechanism 100 (see FIG. 2) of the moved member 40 is shown in FIGS. FIG. 1 is a perspective view showing a vehicle seat 200 (a part other than the internal structure is omitted) using a moving mechanism. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 3 is a rear view showing the rear link member 50.

  As shown in FIG. 1, the vehicle seat 200 using the moving mechanism 100 of the moved member 40 according to the embodiment is slidable mainly on a pair of lower rails 10 and lower rails 10 arranged on both sides of the vehicle seat 200. A pair of upper rails 20, a pair of inclined rails 30 fixed to the lower rail 10, a movable member 40, and the upper rail 20, the inclined rail 30, and the movable member 40 are engaged with each other. And a pair of front link members 70 arranged on the front side of the rear link member 50.

  The lower rail 10 is not particularly limited, and various known types used for vehicles can be adopted. In the present embodiment, as shown in FIG. 1, a bottom surface portion 11, a standing side surface portion 12 that is erected upward from both sides of the bottom surface portion 11, and a substantially inward direction from the standing side surface portion 12. A long member having a horizontal portion 13 formed horizontally and an inner vertical portion 14 formed downward from the horizontal portion 13 is used.

  The upper rail 20 is a member that slides along the lower rail 10. In the present embodiment, as shown in FIG. 3, an outer extending portion 21 is formed so as to straddle the inner vertical portion 14 of the lower rail 10. It can move freely in the longitudinal direction but cannot be removed upward. The upper rail 20 is provided with an upper rail bracket 25 that is erected upward, and the rear link member 50 and the front link member 70 are indirectly attached via the upper rail bracket 25. The upper rail 20 and the lower rail 10 are provided with a lock mechanism (not shown) that fixes the relative position. The lock mechanism itself can be used by appropriately selecting an existing technology.

  As shown in FIG. 1 or FIG. 3, the inclined rail 30 is made of a long member having a substantially square cross section with the center of the upper surface open, and the lower rail 10 is positioned so that the front side is at a high position and the rear side is at a low position. It is attached so as to have a slope directly or indirectly. Although the attachment form is not limited, in the present embodiment, it is attached via a so-called Z-shaped bending bracket 35.

  The moved member 40 is a member that supports a seat cushion (not shown) of the vehicle seat 200, and the seat cushion moves corresponding to the movement of the moved member 40. The moved member 40 includes a first moved member 41 that mainly supports the buttocks side of the seat cushion, and a second moved member 42 that supports at least a part of the back side of the thigh. The first moving member 41 includes a pair of seat frames 41 a disposed on both sides of the vehicle seat 200 and a rear connection pipe 41 b that connects them. The rear connection pipe 41b is provided so as to be rotatable with respect to the seat frame 41a. The front end of the seat frame 41a is inclined so that the front end is lowered so as not to interfere with the movement of the second moving member 42 described later. The second moved member 42 is disposed on both sides of the vehicle seat and a front seat frame 42b that is pivotally supported by the movable member shaft support portion 42a so as to be rotatable on the seat frame 41a of the first moved member 41. The thigh support member 42c is disposed across the pair of front seat frames 42b and has a flat upper surface formed so as to support the entire front side of the vehicle seat. The second moved member 42 is provided such that the tip end side is rotated up and down.

  As shown in FIG. 2, the rear link member 50 is attached to a first shaft support portion 51 (shaft fulcrum) rotatably attached to the rear side of the upper rail bracket 25 and a rear connection pipe 41 b of the first moved member 41. It consists of a triangular plate member having a fixed first moving member mounting portion 52 (operation point) fixed and a slide portion 53 (power point) slidably disposed in the inclined rail 30. The first shaft support portion 51 is rotatably attached by a rivet or the like. The 1st to-be-moved member attaching part 52 is being fixed to the back connection pipe 41b by welding. The slide portion 53 is provided with a roller 58 that can move in the inclined rail 30. In the present embodiment, as shown in FIG. 3, two rollers 58 a and 58 b are provided, one on each side of the rear link member 50. The rollers 58a and 58b are arranged so that the axles are shifted, one roller 58 is arranged at a position where the upper surface side of the inclined rail 30 is pressed, and the other roller 58 presses the lower surface of the inclined rail 30. Is arranged. By arrange | positioning in this way, since each roller 58a, 58b presses the upper surface and bottom face of the inclination rail 30, it can prevent that the back link member 50 in the inclination rail 30 rattles. More preferably, as the rear link member 50 moves in the inclined rail 30, the angle between the rear link member 50 and the inclined rail 30 changes. Therefore, as shown in the upper left enlarged view of FIG. It is preferable that the axle is shifted in an oblique direction with respect to the vertical direction of the bottom surface. By arranging in this way, the rear link member 50 is in a state of pressing the upper surface and the bottom surface of the inclined rail 30 regardless of the position of the inclined rail 30, so the rear link member 50 is in any position. However, rattling can be prevented. More preferably, the pair of rollers 58 provided on the inclined rails 30 arranged on the left and right sides of the vehicle seat are arranged so as to be symmetrical. For example, both the inner rollers 58 press the upper surface of the inclined rail 30, and the outer rollers 58 on both sides press the lower surface of the inclined rail 30. By arranging the roller 58 in this way, it is possible to prevent rattling of the entire moved member 40. In a state in which the upper rail 20 is disposed at the rearmost position, that is, in a state in which the moved member 40 is at the lowest position, the first moved member mounting portion 52 is rearward and upward with respect to the first shaft support portion 51. The slide part 53 is located behind and below the first shaft support part 51. Preferably, the rear link member 50 may be set so as to have this positional relationship regardless of the position. The rear link member 50 is not necessarily limited to a triangular plate material and is not particularly limited as long as it is formed so as to have a pivot point, an action point, and a force point. For example, you may produce by the combination of a rod-shaped member.

  The front link member 70 is a link member provided in front of the rear link member 50 and below the second moved member 42, and is a mechanism for moving the second moved member 42. As shown in FIG. 2, the second moved member 42 includes an intermediate link member 71 that is rotatably supported mainly at the front end of the front seat frame 42 b of the second moved member 42 or in the vicinity of the front end side, and the upper rail 20. A rotary link member 73 having a second shaft support portion 73a that is rotatably supported directly or indirectly and an intermediate link member shaft support portion 73b that is rotatably supported by the intermediate link member 71. The intermediate link member 71 is a member that is rotatably supported between the second moved member 42 and the rotary link member 73. If it arrange | positions between these, the form will not specifically limit. The rotary link member 73 is a member that is rotatably supported between the intermediate link member 71 and the upper rail 20. In this embodiment, it is attached to an upper rail bracket 25 attached to the upper rail 20. The rotary link member 73 is not particularly limited as long as the rotary link member 73 is arranged so as to be rotatable in any of these. It may be a simple rod-shaped body. In the present embodiment, the rotary link member 73 is formed in a triangular plate shape, and a front-side front connection pipe 41c that partially connects the first moved members 41 provided on both sides of the vehicle seat. It is provided in the connection pipe axial support part 73c attached to. A biasing member 80 that biases the front connection pipe 41c in the forward direction is attached to the front connection pipe 41c. Therefore, the rotation link member 73 is urged in a direction in which the intermediate link member shaft support portion 73b is lowered (left rotation direction in FIG. 2).

  As described above, the manufactured vehicle seat 200 operates as follows. As shown in FIG. 4A, when the upper rail 20 is located at the rearmost position, that is, when the moved member 40 is arranged at the rearmost position, the first moved member mounting portion 52 of the rear link member 50 is At the lowest position, the first moved member 41 is also arranged at the lowest position. On the other hand, as for the 2nd to-be-moved member 42, the intermediate link member axial support part 73b of the rotation link member 73 is arrange | positioned in the highest position, and the 2nd to-be-moved member 42 is set so that the front end side may face upward. Has been placed. That is, the front end of the thigh support member 42c is located higher than the upper surface of the seat (the upper surface of the first moved member 41). This state is a position where a person with a relatively high height sits, with the buttocks being the lowest and placed rearward, and the legs are in the state where the thighs are placed highest. Therefore, even if a leg is long, it can prevent that a leg becomes cramped.

  From this state, the operation lever 90 is operated to slide the upper rail 20 forward as shown in FIG. 4B. That is, the vehicle seat 200 is moved forward. As a result, the slide portion 53 moves forward in the inclined rail 30 and, due to this movement, the slide portion 53 is pressed rearward and upward by a reaction force from the bottom surface of the inclined rail 30. As a result, the rear link member 50 rotates (rotates counterclockwise in FIG. 4) in the direction in which the first moving member mounting portion 52 moves upward and forward. As a result, the rear side of the second moved member 42 moves in an arc shape with the first shaft support portion 51 as the center. That is, it moves upward and forward. Further, as the second moved member 42 (seat frame 41a) is moved forward by this movement, the intermediate link member shaft support portion 73b is pushed forward via the second moved member 42 and the intermediate link member 71, Since the connecting pipe shaft support 73c is also pushed forward via the front connection pipe 41c, the rotary link member 73 rotates in the direction in which the intermediate link member shaft support 73b moves forward and descends (left rotation in FIG. 4B). . With this rotation, as shown in FIG. 4B, the second moved member 42 rotates so that the tip end side is lowered around the pivot member 42a for the moved member. Thereby, the 2nd to-be-moved member 42 is arrange | positioned so that the front end side may become slightly lower than the rear end side. In such a position, compared to a case where the upper rail 20 is disposed at the rearmost end, the state is more appropriate for a person whose height is lower than that at the rearmost end. In the seated person, the hip point rises by the rise of the first moving member 41 while the whole body moves forward. However, since the leg part has a lower knee part, the leg part below the shin part is lower than the state in which the upper rail 20 in FIG. 4A is arranged at the rearmost end. For this reason, the distance to the floor and the pedal is shortened, and the legging property is secured. When the upper rail 20 is slid forward, the front connecting pipe 41c is urged forward by the urging member 80, so that the upper rail 20 can be easily moved forward with a light force. .

  Further, by sliding the upper rail 20 forward, as shown in FIG. 4C, the first moved member 41 is disposed at the highest position as shown in FIG. 4C by the same movement as the movement from FIG. 4A to FIG. 4B. The two moved members 42 are arranged in a state where the tip is on the lowest side. That is, the heel portion of the vehicle seat is arranged at the highest position, and the leg portions below the shin portion are arranged at the lowest position. This state is a position where a person with a relatively short height sits, and the leg part below the shin part is arranged at the lowest position while the heel part is the highest and arranged in the front, ensuring high visibility. It will be in the state. Therefore, even if the heel portion is at a high position, the distance to the floor surface and the pedal is shortened, and the legging property is improved.

  As described above, according to the moving mechanism according to the present invention, the raising / lowering of the vehicle seat and the tilt of the tilt portion in front of the seat cushion can be interlocked and controlled by the sliding operation. Of course, in these movements, the fixing position between FIG. 4A and FIG. 4C is not limited to FIG. 4B, and can be fixed in a plurality of stages. If the relative position of the upper rail 20 and the lower rail 10 is fixed (for example, by a locking means or the like), the first moving member 41 and the second moving member 42 can all be fixed, and it is necessary to provide a separate fixing means. There is no.

  By moving the upper rail 20 rearward, as shown in FIGS. 4C to 4A, the first moving member 41 and the second moving member 42 are moved by the operation opposite to the ascending operation described above. It will be.

  The vehicle seat is adjusted by the driver himself in accordance with the height of the driver. At this time, it has been found that the seating position that is comfortable and safe for the driver, that is, the hip point, is statistically and ergonomically within a certain range according to the height. According to the present invention, the hip point can be set according to the front and rear position of the vehicle seat in a state adapted to the trajectory, so that the driver can adjust the optimal height only by adjusting the front and rear position of the vehicle seat. It can be adjusted to the seating surface. In general, a tall person has a long leg and a short person has a short leg. However, according to the vehicle seat having the moving mechanism 100 according to the present invention, as the heel side rises, the vehicle Since the second moving member 42 supported from the front end side of the seat, that is, from the back of the knee to the back of the thigh, is lowered, the hip point can be raised while securing the foot and the pedal. .

  As described above, according to the moving mechanism 100 of the moved member according to the present invention, the rising and lowering of the moved member 40 can be controlled only by the input means for sliding the upper rail 20 back and forth. Therefore, it is not necessary to adjust the height position again after adjusting the front-rear position of the seat. In the case of the electric type, the height is automatically adjusted by the forward and backward movement of the vehicle seat, so that an electric unit for height adjustment is not required, which contributes to cost reduction as compared with the conventional case.

  In addition, this invention is not limited to the structure of embodiment, In the range which does not deviate from the summary of this invention, it can change suitably.

  In the above-described embodiment, the moving mechanism 100 is provided at two locations so as to correspond to the left and right slide rails, respectively, but the inclined rail 30, the front link member 70, the rear link member 50 are provided on one side, and the other side. May have only a link that follows the movement of one side without having its own point of action.

  In the above-described embodiment, the vehicle seat has been described. Of course, the present invention is not limited to the vehicle seat, and the moving mechanism according to the present invention can be applied to all vehicle seats such as trains, airplanes, and wheelchairs. Can be applied.

  As shown in the embodiment described above, it can be used as a lifting device for a vehicle seat.

DESCRIPTION OF SYMBOLS 10 ... Lower rail, 11 ... Bottom part, 12 ... Standing side part, 13 ... Horizontal part, 14 ... Inner vertical part, 20 ... Upper rail, 21 ... Outer extension part, 25 ... Upper rail bracket, 30 ... Inclined rail, 35 ... Bracket, 40 ... Moving member, 41 ... First moving member, 41a ... Seat frame, 41b ... Rear connecting pipe, 41c ... Front connecting pipe, 42 ... Second moving member, 42a ... Shaft for moving member Support part, 42b ... front seat frame, 42c ... thigh support member, 50 ... rear link member, 51 ... first shaft support part, 52 ... first moving member attaching part, 53 ... slide part, 58 ... roller, 58a ... Roller, 70 ... Forward link member, 71 ... Intermediate link member, 73 ... Rotating link member, 73a ... Second shaft support, 73b ... Intermediate link member shaft support, 73c ... Connection pipe shaft support, 3d ... connecting pipe shaft support, 80 ... urging member, 90 ... operating lever 100 ... moving mechanism, 200 ... vehicle seat

Claims (7)

Lower rail,
An upper rail slidably provided on the lower rail;
An inclined rail arranged to have an angle with respect to the lower rail;
A first moving member that supports at least the buttocks side; and a second that is rotatably supported by the first moving member on the front side of the first moving member and supports at least a part of the thigh. A moved member having a moved member;
A first shaft support portion that is rotatably supported directly or indirectly on the upper rail, a first moving member mounting portion that is directly or indirectly mounted on the first moving member, and along the inclined rail A rear link member having a slide portion that moves
An intermediate link member rotatably disposed on the front side of the second moving member, a second shaft support portion pivotally supported directly or indirectly on the upper rail, and rotatable on the intermediate link member A rotation link member having an intermediate link member shaft support portion pivotally supported by the front link member,
A moving mechanism characterized by comprising: When the upper rail is positioned at the rearmost position, the upper surface of the tip of the second moving member is positioned above the upper surface of the first moving member,
2. The moving mechanism according to claim 1, wherein when the upper rail is positioned at the forefront, the upper surface of the tip is positioned below the upper surface of the first moved member.   The rotary link member is formed in a triangular plate shape, and at least a part of the rotary link member is directly or indirectly attached to the first moved member. Moving mechanism.   The moving mechanism according to any one of claims 1 to 3, wherein the rotating link member includes a biasing member that biases in a predetermined direction. The inclined rail is composed of a long member having a cross section that can accommodate a roller,
The slide portion has two rollers whose axles are shifted, one of the rollers abuts on the top surface of the inclined rail, and the other roller abuts on the bottom surface of the inclined rail. The moving mechanism according to any one of claims 1 to 4.   A vehicle seat comprising the moving mechanism according to any one of claims 1 to 5. The moving mechanism is provided on the left and right slide rails,
The vehicle seat according to claim 6, wherein the rollers of the moving mechanism on both sides are arranged symmetrically to each other.

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