JP2017114450A - Seat operation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat operation device capable of actuating a seat position adjustment mechanism by an operation instinctively understood more easily.SOLUTION: This seat operation device is provided with: a base member 20 having an internal gear 22 formed therein; a sliding operation lever 31 connected to a sliding operation shaft 13 that actuates a sliding mechanism accompanying rotation so as to integrally rotate; s planetary gear 32 that has an external gear 32b engaged with the internal gear 22 and a connection part 32d, and revolves along the internal gear 22 while rotating around a shaft 31c in the sliding operation lever 31 so that the connection part 32d can be pivotally supported by the sliding operation lever 31 to make linear motion; and an operation knob 40 connected to the connection part 32d.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a sheet operating device.

  Conventionally, as a sheet operating device, for example, a sheet driving device described in Patent Document 1 is known. This apparatus includes a slide operation handle that is rotatably supported by a main body case. By operating the slide operation handle to rotate, the rotation motor is energized, and the rotation motor The slide mechanism is operated by switching the clutch mechanism that connects and disconnects the rotation transmission to the connected state.

JP 2013-107624 A

  By the way, in Patent Document 1, the operation of the slide operation handle is a rotational motion, but the adjustment of the slide mechanism is a linear motion, which makes it difficult to understand intuitively.

  An object of the present invention is to provide a seat operating device capable of operating a seat position adjusting mechanism with a sensuous and easily understandable operation.

  A seat operating device that solves the above problems includes a base member having an internal gear, an operating lever that is connected so as to rotate integrally with an operating shaft that operates a seat position adjusting mechanism as it rotates, An external gear that meshes with the toothed gear and a connecting portion are supported by the operating lever, and along the internal gear while rotating around the shaft of the operating lever so that the connecting portion performs linear motion. A planetary gear that revolves and revolves, and an operation knob connected to the connecting portion.

  According to this configuration, when the operation knob is operated so as to move along the direction of the linear motion of the connecting portion, the planetary gear rotates around the axis of the operation lever while rotating the internal gear. Revolve along. The seat position adjusting mechanism is actuated by the operation lever rotating together with the operation shaft by the rotation of the shaft accompanying the revolution of the planetary gear. In this case, for example, the operation knob can be operated in a sensuous state when the adjustment direction of the sheet position by the sheet position adjustment mechanism substantially coincides with the direction of the linear movement of the operation knob (connecting portion).

  In the sheet operating device, a diameter of the pitch circle of the external gear is set to ½ of a diameter of the pitch circle of the internal gear, and the connecting portion is on the pitch circle of the external gear. Preferably they are arranged.

  According to this configuration, when the diameter of the pitch circle of the external gear is ½ of the diameter of the pitch circle of the internal gear, a cycloid drawn by one point on the pitch circle of the external gear (hypocycloid) ) Is known to be a straight line. Therefore, the planetary gear revolves along the internal gear while rotating around the axis of the operation lever, so that the linear motion of the connecting portion can be naturally realized.

  In the seat operating device, the connecting part is one of a cylindrical part extending in the center line parallel to the axis of the planetary gear and a bearing part pivotally supporting the cylindrical part, and the operating knob is the cylindrical part. And it is preferable to have either the other of the said bearing parts.

  According to this configuration, when the connecting portion is linearly moved in accordance with the operation of the operation knob, the connecting portion (the cylindrical portion or the bearing portion) rotates around its center line as the planetary gear revolves. . However, since the rotation of the connecting portion is absorbed by the bearing portion or the cylindrical portion of the operating knob, the operating knob is moved in the direction of the linear motion without swinging around the center line of the connecting portion. It can be operated to move along.

  With respect to the seat operating device, the seat position adjusting mechanism is a slide mechanism that adjusts the longitudinal position of the seat, and a lifter mechanism that adjusts the vertical position of the seat as it rotates about an axis parallel to the axis of the operating shaft. A lifter operating lever that is connected to a second operating shaft that operates integrally with the lifter, and is interposed between the operating knob and the lifter operating lever, and moves the operating knob in the direction of the linear motion. The lifter operating lever is released when operated so as to move along, and the lifter operating lever is rotated together with the connecting portion being released when operated so as to rotate the operating knob. It is preferable to provide a switching mechanism to be operated.

  According to this configuration, when the operation knob is operated to move along the direction of the linear motion, the lifter operation lever is released by the switching mechanism, thereby suppressing malfunction of the lifter mechanism. While the slide mechanism can be operated. Further, when the operation knob is operated so as to rotate, the connecting portion is released by the switching mechanism, so that the lifter mechanism can be operated while suppressing malfunction of the slide mechanism.

  With respect to the seat operating device, the switching mechanism is formed on the operating knob and rotates around the second operating shaft of the lifter operating lever with respect to the operating lever when the operating shaft is at a corresponding initial position. Peripheral grooves that allow movement and formed in the operation knob, and allow the movement of the operation knob along the direction of the linear motion relative to the operation lever for the lifter when the second operation shaft is in the corresponding initial position. The lifter guide groove is preferably configured.

  According to this configuration, it is possible to make the switching mechanism a very simple configuration basically composed of grooves (circumferential grooves, lifter guide grooves) formed in the operation knob.

  The present invention has an effect that the seat position adjusting mechanism can be operated by an operation that is easier to understand sensuously.

FIG. 3 is a perspective view of a 6-way power seat to which an embodiment of the sheet operating device is applied. The disassembled perspective view which shows the structure about the sheet | seat operating device of the embodiment. The figure which looked at the structure along the axial direction about the sheet operation device of the embodiment. (A), (b) is a figure which shows the change from FIG. 3 when operating the operation knob so that it may move to the front and back of a sheet | seat about the seat operation apparatus of the embodiment. The figure which looked at the structure along the axial direction about the sheet operation device of the embodiment. (A), (b) is a figure which shows the change from FIG. 5 when operating an operation knob so that a front-end part may raise and lower about the sheet | seat operation apparatus of the embodiment. Explanatory drawing which shows the principle of the operation | movement about the sheet | seat operating device of the embodiment.

Hereinafter, an embodiment of the sheet operating device will be described.
As shown in FIG. 1, a pair of lower rails 1 that are arranged side by side in the width direction of the seat and extend in the front-rear direction are fixed to the floor of the vehicle, and an upper rail 2 is disposed in front and rear of each of the lower rails 1. It is mounted to move in the direction.

  A bracket 3 made of a plate material is erected on each of the upper rails 2. Each of the brackets 3 supports a seat 6 that forms a seating portion for an occupant via a front link 4 and a rear link 5 disposed at the front and rear portions. The seat 6 includes a seat cushion 7 that forms a seating surface, a seat back 8 that is supported by a rear end portion of the seat cushion 7 so as to be tiltable (rotatable) in the front-rear direction, and an upper end portion of the seat back 8. And a supported headrest 9.

  The seat 6 can be adjusted in its longitudinal position by relatively moving the lower rail 1 and the upper rail 2 on both sides, and can be adjusted in its vertical position by raising and lowering the front link 4 and the rear link 5 on both sides. is there. Further, the seat 6 is adjustable in the inclination angle of the seat back 8 with respect to the seat cushion 7. Thereby, the seated person of the said sheet | seat 6 can adjust the position of a line of sight according to the physique, for example.

  A driving device 10 shown in FIG. 2 is attached to one side of the seat cushion 7 (right side toward the front of the seat). The drive device 10 includes a main body case 11 that forms the casing, and a rotation motor 12 attached to the main body case 11. A rotating cable 52 held by the protective tube 51 extends forward from the main body case 11, and a sliding gear box 53 is connected to the rotating cable 52. A rotating cable 55 held by the protective tube 54 extends rearward from the main body case 11, and a recliner gear box 56 is connected to the rotating cable 55. Further, a rotating cable 58 held by the protective tube 57 extends rearward from the main body case 11, and a lifter gear box 59 is connected to the rotating cable 58.

  The main body case 11 has a slide operation shaft 13, a recliner operation shaft 14, and a lifter operation shaft 15 as a second operation shaft that extend in parallel with each other substantially along the width direction of the seat. It is supported freely. The slide operation shaft 13, the recliner operation shaft 14, and the lifter operation shaft 15 are juxtaposed in the front-rear direction, and the slide operation shaft 13 and the recliner operation shaft 14 are disposed in front of and behind the lifter operation shaft 15. Are arranged respectively.

  Each of the slide operation shaft 13, the recliner operation shaft 14, and the lifter operation shaft 15 is linked to an appropriate clutch mechanism (not shown) housed in the main body case 11, and with the rotation from the initial position. By switching the clutch mechanism to the connected state, the rotational force of the rotary motor 12 can be transmitted to the corresponding rotary cables 52, 55, 58. Alternatively, each of the slide operation shaft 13, the recliner operation shaft 14, and the lifter operation shaft 15 corresponds to the rotational force of the rotary motor 12 by switching the clutch mechanism to the disconnected state along with the return rotation to the initial position. To transmit to the rotating cables 52, 55, 58. For the return rotation to the initial position, for example, an appropriate biasing force of the return spring is used.

  Further, each of the slide operation shaft 13, the recliner operation shaft 14 and the lifter operation shaft 15 is linked to an appropriate switch (not shown) housed in the main body case 11, and can be rotated from the initial position. Accordingly, the switch is switched so that the rotary motor 12 is energized with the polarity according to the rotation direction. Alternatively, each of the slide operation shaft 13, the recliner operation shaft 14, and the lifter operation shaft 15 switches a switch so as to stop energization of the rotary motor 12 along with the return rotation to the initial position.

  Here, for example, when the slide operation shaft 13 rotates in one direction (clockwise in the figure) from the initial position, the rotational force in one direction of the rotary motor 12 is transmitted to the slide gear box 53 via the rotary cable 52. . At this time, the upper rail 2 moves forward with respect to the lower rail 1. On the other hand, when the slide operation shaft 13 rotates in the reverse direction (counterclockwise in the drawing), the reverse rotational force of the rotary motor 12 is transmitted to the slide gear box 53 via the rotary cable 52. At this time, the upper rail 2 moves backward with respect to the lower rail 1. The sliding gear box 53 constitutes a sliding mechanism M1 as a seat position adjusting mechanism together with both the lower rails 1 and both the upper rails 2 and the like.

  For example, when the recliner operation shaft 14 rotates in one direction (clockwise in the drawing) from the initial position, the rotational force in one direction of the rotary motor 12 is transmitted to the recliner gear box 56 via the rotation cable 55. At this time, the seat back 8 tilts forward with respect to the seat cushion 7. On the other hand, when the recliner operation shaft 14 rotates in the reverse direction (counterclockwise in the figure), the reverse rotational force of the rotary motor 12 is transmitted to the recliner gear box 56 via the rotation cable 55. At this time, the seat back 8 tilts backward with respect to the seat cushion 7. The recliner gear box 56 constitutes a recliner mechanism M2 together with the seat cushion 7, the seat back 8, and the like.

  Further, for example, when the lifter operating shaft 15 rotates in one direction (clockwise in the drawing) from the initial position, the rotational force in one direction of the rotary motor 12 is transmitted to the lifter gear box 59 via the rotary cable 58. At this time, the front link 4 and the rear link 5 are rotated so that the seat cushion 7 is lowered with respect to the bracket 3 (floor). On the other hand, when the lifter operating shaft 15 rotates in the reverse direction (counterclockwise in the figure), the reverse rotational force of the rotary motor 12 is transmitted to the lifter gear box 59 via the rotary cable 58. At this time, the front link 4 and the rear link 5 rotate so that the seat cushion 7 rises with respect to the bracket 3 (floor). The front link 4, the rear link 5, and the lifter gear box 59 constitute a lifter mechanism M3 together with the bracket 3, the seat cushion 7, and the like.

  That is, the present embodiment is a so-called 6-way power seat that can adjust the forward and reverse seat positions in each of the slide mechanism M1, the recliner mechanism M2, and the lifter mechanism M3.

  The tip portions of the slide operation shaft 13, the recliner operation shaft 14, and the lifter operation shaft 15 that protrude from the main body case 11 are provided with fitting portions 16, 17, 18 having a substantially polygonal column shape (in this embodiment, a substantially hexagonal column shape). Form. The main body case 11 is covered and fixed with a substantially rectangular plate-shaped base member 20 facing the fitting portions 16 to 18.

  The base member 20 is formed with a substantially rectangular recess 21 that is recessed from the fitting portion 16 side so as to include the fitting portion 16 and the peripheral edge thereof. The fitting part 16 is arranged at the lower part of the center part in the front-rear direction of the recessed part 21. A substantially fan-shaped internal gear 22 that protrudes upward is formed on the inner wall surface of the recess 21 located above the fitting portion 16. The base member 20 is formed with a long hole 23 that faces the fitting portion 16 and opens the lower portion of the bottom wall of the recess 21. The long hole 23 extends forward and rearward with the fitting portion 16 in between. Further, the base member 20 is formed with a substantially circular insertion hole 24 that opens concentrically with the recliner operation shaft 14, and a substantially circular insertion hole 25 that opens concentrically with the lifter operation shaft 15. Yes. The fitting portions 17 and 18 are loosely inserted into the insertion holes 24 and 25.

  A substantially arm-like slide operation lever 31 as an operation lever is connected to the fitting portion 16 so as to rotate integrally within the recess 21. That is, the slide operating lever 31 is formed with a substantially polygonal (substantially hexagonal in this embodiment) fitting hole 31a, and the fitting portion 16 is inserted into the fitting hole 31a. It rotates together with the fitting portion 16 (sliding operation shaft 13). The slide operation lever 31 has a lever protrusion 31b extending in the upward radial direction centering on the fitting hole 31a, and protrudes toward the base member 20 at the tip of the lever protrusion 31b. And has a substantially cylindrical shaft 31c. The axis of the shaft 31c is parallel to the axis of the slide operation shaft 13 or the like.

  A substantially spatula-shaped planetary gear 32 is pivotally supported (supported by a rotating shaft) in the recess 21 in the slide operating lever 31. That is, the planetary gear 32 is formed with a substantially circular bearing hole 32a having an inner diameter equivalent to the outer diameter of the shaft 31c, and the shaft 31c is rotatably inserted into the bearing hole 32a.

  The planetary gear 32 has a substantially fan-shaped external gear 32b extending in the upward radial direction around the bearing hole 32a, and meshes with the internal gear 22 in the external gear 32b. Accordingly, the planetary gear 32 revolves (rotates on the revolution shaft) along the internal gear 22 while rotating around the shaft 31c in the slide operation lever 31. The diameter D2 of the pitch circle of the external gear 32b is set to 1/2 (= D1 / 2) of the diameter D1 of the pitch circle of the internal gear 22.

  The planetary gear 32 has a substantially arm-shaped lever protrusion 32c extending in the downward radial direction centering on the bearing hole 32a, and the base member 20 at the tip (lower end) of the lever protrusion 32c. A substantially cylindrical connecting portion 32d as a columnar portion protruding toward the surface. The center of the connecting portion 32d is located on the pitch circle of the external gear 32b, and is located on a straight line connecting the circumferential center of the external gear 32b and the center of the shaft 31c. When the external gear 32b meshes with the center of the internal gear 22 in the circumferential direction, the meshing position is positioned at the center of the external gear 32b in the circumferential direction. That is, when the external gear 32b and the internal gear 22 are meshed at the center in the circumferential direction, the center of the connecting portion 32d is located on a straight line that substantially extends in the vertical direction connecting the mesh position and the center of the shaft 31c. . At this time, the slide operation shaft 13 is disposed at the corresponding initial position. In the present embodiment, the radial distance La between the center of the shaft 31c and the center of the fitting hole 31a is the radial distance Lb between the center of the bearing hole 32a (shaft 31c) and the center of the connecting portion 32d. It is set equally. Needless to say, the distances La and Lb are equal to the pitch circle diameter D2 of the external gear 32b (1/2 of the pitch circle diameter D1 of the internal gear 22). In other words, the vertical position of the connecting portion 32d coincides with the vertical position of the fitting hole 31a (sliding operation shaft 13). And the connection part 32d is loosely inserted in the long hole 23 opening facing this so that it can move in the front-back direction.

  Here, as shown in FIG. 7, when a circle (rolling circle) Cm rolls along the inside of a fixed circle (constant circle) Cr, if the diameter of the circle Cm is ½ of the diameter of the circle Cr, It is known that a cycloid (hypocycloid) drawn by one point on the circle Cm is a straight line. For example, when the point P on the circle Cm is selected on the straight line L1 passing through the contact point CN of both the circles Cr and Cm and the center O of the circle Cm, the point P draws a straight line L2 orthogonal to the straight line L1. In FIG. 7, different positions a, b, c of the circle Cm, positions Pa, Pb, Pc of the corresponding point P, and positions Oa, Ob, Oc of the center O are drawn together. As can be seen from the figure, when the circle Cm is displaced along the circle Cr to the positions a to c, the point P is displaced along the straight line L2 to the positions Pa to Pc, and the center O is displaced to the positions Oa to Oc. To do.

  Accordingly, the circle Cr and the circle Cm are regarded as the pitch circle of the internal gear 22 and the pitch circle of the external gear 32b, respectively, and the contact point CN meshes with the external gear 32b and the internal gear 22 at the center in the circumferential direction. Suppose that it is the meshing position when At this time, the center O can be regarded as the center of the shaft 31c (bearing hole 32a), and the point P can be regarded as the center of the connecting portion 32d. When the planetary gear 32 revolves around the shaft 31c and revolves counterclockwise along the internal gear 22, the center (point P) of the connecting portion 32d is a straight line toward the rear along the straight line L2. Exercise. The center (center O) of the shaft 31c also revolves counterclockwise in the figure.

  In other words, if the center of the connecting portion 32d is moved in the front-rear direction along the long hole 23 (linear motion), the planetary gear 32 rotates along the internal gear 22 while rotating around the shaft 31c. Revolve. Then, the center of the shaft 31c revolves in the corresponding direction. Specifically, if the center of the connecting portion 32d is moved forward (linear motion), the center of the shaft 31c revolves clockwise in the figure. Then, the slide operation shaft 13 together with the slide operation lever 31 rotates from the initial position clockwise in the drawing. On the other hand, if the center of the connecting portion 32d is moved backward (linear motion), the center of the shaft 31c revolves counterclockwise in the figure. Then, the slide operation shaft 13 together with the slide operation lever 31 rotates counterclockwise from the initial position in the drawing.

  The dimension of the long hole 23 in the front-rear direction is set to be shorter than the diameter of revolution of the planetary gear 32 (diameter D1). This is to limit the moving range of the connecting portion 32d at the end of the long hole 23.

  As shown in FIG. 2, a lifter operating lever 35 is connected to the fitting portion 18 of the lifter operating shaft 15 so as to rotate integrally. That is, the lifter operating lever 35 has a substantially bowl-shaped main body 36 having a pair of guide pieces 36a that are arranged in parallel in the vertical direction and extend substantially along the front with a constant cross section. A substantially cylindrical support portion 37 projecting toward the main body case 11 is provided at the end portion. The support portion 37 has an outer diameter slightly smaller than the inner diameter of the insertion hole 25, and a substantially polygonal (substantially hexagonal in this embodiment) fitting hole 37 a is formed at the center thereof. . The lifter operating lever 35 is fitted by fitting the fitting part 18 into the fitting hole 37a of the support part 37 inserted into the insertion hole 25 from the opposite side (outside) of the main body case 11 in the sheet width direction. It rotates together with the joint 18 (lifter operating shaft 15). That is, when the lifter operating lever 35 is rotated in the clockwise direction in the figure, the lifter operating shaft 15 is rotated in the direction, and the lifter operating lever 35 is rotated in the counterclockwise direction in the illustrated direction. The lifter operating shaft 15 rotates.

  The opening width of the main body 36 (both guide pieces 36a) is set to be equal to the opening width in the short direction of the long hole 23, and both guides when the lifter operating shaft 15 is at the corresponding initial position. The piece 36a is located above and below the long hole 23.

  An operation knob 40 having an outer shape imitating a side view of the seat cushion 7 is attached to a distal end portion that penetrates the main body portion 36 of the lifter operation lever 35 and the long hole 23 of the connecting portion 32 d of the planetary gear 32. That is, as shown in FIG. 3, the operation knob 40 is formed with a substantially U-shaped lifter guide groove 41 that extends in the front-rear direction and in which the main body 36 is inserted so as to be movable in that direction. And a pair of front and rear sandwiching protrusions 42 as a bearing part protruding from the center of the front end of the lifter guide groove 41 toward the main body case 11 side (back side orthogonal to the paper surface). And the operation knob 40 clamps the connection part 32d (front-end | tip part) by the both clamping protrusions 42 in the front-back direction.

  Therefore, as shown by the change to FIG. 4A, when the operation knob 40 is operated to move forward, the connecting portion 32d moves forward (linear motion) together with both the sandwiching protrusions 42. At this time, the slide mechanism M1 is operated to move the upper rail 2 forward relative to the lower rail 1 by rotating the slide operation shaft 13 together with the slide operation lever 31 clockwise from the initial position as described above. To do. On the other hand, as shown by the change to FIG. 4B, when the operation knob 40 is operated so as to move backward, the connecting portion 32d moves backward (linear motion) together with both sandwiching protrusions 42. At this time, as described above, the sliding operation shaft 13 together with the sliding operation lever 31 rotates counterclockwise in the drawing from the initial position, so that the slide mechanism M1 moves the upper rail 2 backward with respect to the lower rail 1. Operate. In these cases, the lifter operating lever 35 does not obstruct the movement of the operation knob 40 in the front-rear direction by sliding the main body 36 in the front-rear direction along the lifter guide groove 41.

  As shown in FIG. 5, the operation knob 40 has a substantially arcuate circumference extending in the circumferential direction around the lifter operation shaft 15 at the position of the connecting portion 32 d corresponding to the initial position of the slide operation shaft 13. A groove 43 is formed. That is, the circumferential groove 43 extends upward and downward from a portion sandwiched between the both sandwiching protrusions 42. In other words, the gap formed between the both sandwiching protrusions 42 constitutes a part of the circumferential groove 43. Therefore, as shown by the change to FIG. 6A, even if the operation knob 40 is operated so as to rotate to the side where the front end part is raised, the connection part 32d is operated by running idle in the circumferential groove 43. The rotation of the knob 40 is not hindered. At this time, as described above, the lifter operating shaft 15 together with the operating knob 40 and the lifter operating lever 35 is rotated counterclockwise in the drawing to raise the seat cushion 7 with respect to the bracket 3 (floor). The lifter mechanism M3 operates. On the other hand, as shown in the change to FIG. 6B, even if the operation knob 40 is operated so as to rotate to the side where the front end portion is lowered, the connecting portion 32d similarly runs idle in the circumferential groove 43. Thus, the rotation of the operation knob 40 is not hindered. At this time, as described above, the lifter operating shaft 15 together with the operating knob 40 and the lifter operating lever 35 rotates in the clockwise direction in the drawing, so that the lifter is lowered to lower the seat cushion 7 with respect to the bracket 3 (floor). The mechanism M3 is activated. The circumferential groove 43 constitutes a switching mechanism together with the main body 36 and the lifter guide groove 41.

  As shown in FIG. 2, the recliner operation handle 45 is connected to the fitting portion 17 of the recliner operation shaft 14 so as to rotate integrally. That is, the recliner operation handle 45 has an outer shape imitating a side view of the seat back 8 and has a substantially cylindrical support portion 46 projecting toward the main body case 11 at a lower end portion thereof. The support portion 46 has an outer diameter slightly smaller than the inner diameter of the insertion hole 24, and a substantially polygonal (substantially hexagonal in this embodiment) fitting hole 46a is formed at the center thereof. . The recliner operating handle 45 is fitted by fitting the fitting portion 17 into the fitting hole 46a of the support portion 46 inserted into the insertion hole 24 from the opposite side (outside) of the main body case 11 in the seat width direction. It rotates together with the joint portion 17 (recliner operation shaft 14).

  Accordingly, for example, when the recliner operation handle 45 is operated so as to be rotated forward, the recliner operation shaft 14 and the recliner operation shaft 14 are rotated in the clockwise direction in the drawing as described above. The recliner mechanism M2 is actuated so as to tilt forward. On the other hand, when the recliner operation handle 45 is operated so as to rotate backward, the recliner operation shaft 14 and the recliner operation shaft 45 rotate counterclockwise in the drawing as described above. The recliner mechanism M2 operates to tilt 8 backward.

  The operation knob 40 and the recliner operation handle 45 constitute an operation panel CP together with the base member 20, the slide operation lever 31, the planetary gear 32 and the lifter operation lever 35. Therefore, the operation panel CP is disposed adjacent to the outside of the driving device 10 in the seat width direction, and is exposed and disposed on the side portion of the seat cushion 7. Note that the initial position of the operation knob 40 is held by using the aforementioned urging force of the return spring that returns the slide operation shaft 13 or the lifter operation shaft 15 to the corresponding initial position. On the other hand, the initial position of the recliner operation handle 45 is held by using the aforementioned urging force of the return spring for returning the recliner operation shaft 14 to the corresponding initial position.

As described in detail above, according to the present embodiment, the following operational effects can be achieved.
(1) In the present embodiment, when the operation knob 40 is operated so that the connecting portion 32d moves along the direction of the linear motion, the planetary gear 32 rotates around the shaft 31c of the slide operation lever 31. Revolves along the internal gear 22. Then, the slide operation lever 31 rotates together with the slide operation shaft 13 by the rotation of the shaft 31c accompanying the revolution of the planetary gear 32, whereby the slide mechanism M1 operates. In this case, the operation knob 40 can be operated in a sensuous state by the adjustment direction (front-rear direction) of the seat position by the slide mechanism M1 substantially coincides with the direction of the linear movement of the operation knob 40 (connecting portion 32d).

  (2) In this embodiment, since the diameter D2 of the pitch circle of the external gear 32b is set to ½ of the diameter D1 of the pitch circle of the internal gear 22, the planetary gear 32 is in the slide operation lever 31. By revolving along the internal gear 22 while rotating around the shaft 31c, the linear movement of the connecting portion 32d can be naturally realized.

  (3) In the present embodiment, the connecting portion 32d (columnar portion) is substantially cylindrical and is pivotally supported by a pair of front and rear clamping protrusions 42 (bearing portions) formed on the operation knob 40. Here, when the connecting portion 32d is linearly moved in accordance with the operation of the operation knob 40, the connecting portion 32d rotates around its center line as the planetary gear 32 revolves. However, the rotation of the connecting portion 32d is absorbed by the sandwiching protrusions 42 of the operating knob 40, so that the operating knob 40 is moved along the direction of the linear motion without swinging around the center line of the connecting portion 32d. Can be operated to move.

  (4) In this embodiment, when the operation knob 40 is operated to move along the direction of the linear motion, the lifter operation lever 35 is released by the lifter guide groove 41 or the like (switching mechanism). The slide mechanism M1 (corresponding clutch mechanism or the like) can be operated while suppressing malfunction of the lifter mechanism M3. Further, when the operation knob 40 is operated to rotate, the connecting portion 32d is released by the circumferential groove 43 or the like (switching mechanism), so that the lifter mechanism M3 can be operated while suppressing the malfunction of the slide mechanism M1.

(5) In the present embodiment, the switching mechanism can have a very simple configuration basically composed of grooves (circumferential groove 43 and lifter guide groove 41) formed in the operation knob 40.
(6) In this embodiment, the operating locus of the connecting portion 32d (point P) is a straight line (L2), and the amount of movement is twice the amount of movement of the rotation center (O) of the planetary gear 32. The operating force required for 40 can be further reduced. For example, in order to reduce the operating force, it is not necessary to shift the operation position in the radial direction (for example, the upward radial direction) around the slide operation shaft 13 to earn a moment, so that the direction can be made compact. . When the slide operation shaft 13 is at the initial position, the axis of the slide operation shaft 13 (slide operation lever 31) coincides with the center line of the connecting portion 32d. Therefore, even if the operation knob 40 is arranged at a low position of the seat cushion 7 that is easy for the seated person of the seat 6 to operate, the influence on the arrangement of the slide operation shaft 13 (drive device 10) can be reduced. And since the operation knob 40 can be operated in the said low position, operativity can be improved.

  (7) In the present embodiment, the operation knob 40 has an outer shape (design) imitating a side view of the seat cushion 7. The slide mechanism M1 can be operated by moving the operation knob 40 of the design in the front-rear direction, and the lifter mechanism M3 can be operated by rotating in the vertical direction. In this way, the operability can be further improved because the operation knob 40 has an intuitive and easy-to-understand design. In particular, since the operation knob 40 is shared by the slide mechanism M1 and the lifter mechanism M3, a neat design is achieved. Similarly, the recliner operation handle 45 has an outer shape (design) imitating a side view of the seat back 8. The recliner mechanism M2 can be operated by rotating the recliner operation handle 45 of the design in the front-rear direction. As described above, the recliner operation handle 45 is designed to be intuitive and easy to understand, so that operability can be further improved.

  (8) In this embodiment, since both the slide mechanism M1 and the lifter mechanism M3 can be operated only by operating the operation knob 40, for example, it is possible to reduce the troublesomeness of changing the operation knob.

  (9) In this embodiment, the operation knob 40 and the recliner operation handle 45 that are recognized and operated by the user have the same arrangement and operation direction as those of a general power seat (for example, a by-wire type power seat). Thereby, the uncomfortable feeling of operation accompanying the replacement with the drive device 10 can be eliminated.

  (10) In the present embodiment, since the plurality of position adjusting mechanisms (M1 to M3) can be selectively operated with one rotary motor 12, the electrical configuration can be further simplified.

In addition, you may change the said embodiment as follows.
-In the said embodiment, if the connection part 32d of the planetary gear 32 connected on both sides of the base member 20 and the both clamping protrusions 42 of the operation knob 40 can move integrally in the front-back direction, it will extend in the said direction. Instead of the long hole 23, an appropriate loose insertion hole may be adopted.

  In the embodiment described above, the shaft 31c protrudes from the slide operation lever 31 and the bearing hole 32a for supporting the shaft 31c is formed in the planetary gear 32. However, these relationships may be reversed. That is, a bearing hole may be formed in the slide operation lever 31 and a shaft supported by the planetary gear 32 may be provided in a projecting manner.

  In the embodiment, the connecting portion 32d may be, for example, a columnar shape, a truncated cone shape, a polygonal frustum shape, a polygonal column shape, or the like. In particular, when the connecting portion 32d has a polygonal frustum shape or a polygonal column shape, an appropriate play is set between them so that the rotation of the connecting portion 32d is not transmitted to the operation knob 40 and is not swung. It is preferable to keep it.

  In the embodiment, the operation knob 40 and its operation may be dedicated to the operation of the slide mechanism M1, and the switching mechanism (the lifter guide groove 41 and the like) may be omitted. In this case, for example, a substantially cylindrical bearing portion that pivotally supports the coupling portion 32d may be employed instead of the pair of sandwiching protrusions 42. In the above embodiment, the connecting portion 32d has a cylindrical shape (column portion) and the operation knob 40 has a pair of sandwiching protrusions 42 (bearing portions). However, these relationships are mutually opposite. It may be.

  In the above embodiment, the diameter D2 of the pitch circle of the external gear 32b is made equal to 1/2 (= D1 / 2) of the diameter D1 of the pitch circle of the internal gear 22. In this case, the number of teeth N2 when the external gear 32b is regarded as a cylindrical gear is expected to be equal to 1/2 (= N1 / 2) of the same number of teeth N1 of the internal gear 22. The relationship between them may be shifted so as to be a natural number. Alternatively, the diameter D2 of the pitch circle of the external gear 32b may not exactly coincide with ½ of the diameter D1 of the pitch circle of the internal gear 22, and even if their relationship is slightly shifted, Only the behavior of the connecting portion 32d changes from a linear motion to a gentle curvilinear motion, and there is no great difference in the operation of the operation knob 40. Alternatively, although the attachment point (connecting portion 32d) of the operation knob 40 is disposed on the locus of the pitch circle (rolling circle) of the external gear 32b, even if they are slightly shifted from each other, the behavior of the connecting portion 32d behaves. There is no great difference in the operation of the operation knob 40 only from the linear motion to the gentle curved motion.

  -In the said embodiment, you may provide in each them the rotation motor (12) which operates the slide mechanism M1, the recliner mechanism M2, and the lifter mechanism M3. In this case, each of the slide operation shaft 13, the recliner operation shaft 14, and the lifter operation shaft 15 energizes a corresponding rotary motor that operates each of the slide mechanism M 1, the recliner mechanism M 2, and the lifter mechanism M 3 as it rotates. The switch may be switched so as to do. In this case, a clutch mechanism for connecting / disconnecting each of the rotary cables 52, 55, 58 and the corresponding rotary motor may be provided or omitted.

  In the above-described embodiment, the operation shafts (14, 15) other than the slide operation shaft 13 are seat position adjustment mechanisms other than the recliner mechanism and the lifter mechanism (for example, the vertical position of the front portion with respect to the rear portion of the seat cushion 7). A tilt mechanism for adjusting the headrest, a headrest height adjusting mechanism for adjusting the vertical position of the headrest 9, and the like may be operated.

  In the embodiment, the adjustment of the seat position accompanying the linear motion of the connecting portion 32d (operation knob 40) is performed by adjusting the vertical position of the seat cushion 7 on the premise that the direction of the linear motion is substantially aligned with the vertical direction, for example. (That is, a lifter mechanism). Alternatively, it is also possible to adjust the vertical position of the front part with respect to the rear part of the seat cushion 7 (tilt mechanism) on the assumption that the direction of the linear motion is substantially coincided with the vertical direction. What adjusts a position (headrest height adjustment mechanism) may be sufficient.

  M1 ... Slide mechanism (sheet position adjusting mechanism), M3 ... Lifter mechanism, D1, D2 ... Diameter, 6 ... Seat, 13 ... Slide operation axis (operation axis), 15 ... Lifter operation axis (second operation axis) , 20 ... base member, 22 ... internal gear, 31 ... slide operating lever (operating lever), 31c ... shaft, 32 ... planetary gear, 32b ... external gear, 32d ... connecting part (cylindrical part), 35 ... lifter Operation lever 36 ... Main body (switching mechanism), 40 ... Operation knob, 41 ... Lifter guide groove, 41 ... Lifter guide groove (switching mechanism), 42 ... Clamping protrusion (bearing portion), 43 ... Circumferential groove (Switching mechanism).

Claims (5)

A base member formed with an internal gear;
An operation lever coupled to rotate integrally with an operation shaft that operates the seat position adjusting mechanism with rotation;
The internal gear has an external gear meshing with the internal gear and a connecting portion and is pivotally supported by the operating lever, and the internal gear rotates while rotating around the shaft of the operating lever so that the connecting portion moves linearly. Planetary gears revolving along
A sheet operating device comprising an operation knob connected to the connecting portion. The sheet operating device according to claim 1,
The diameter of the pitch circle of the external gear is set to ½ of the diameter of the pitch circle of the internal gear,
The connecting portion is a sheet operating device arranged on a pitch circle of the external gear. In the sheet operating device according to claim 1 or 2,
The connecting part is either one of a cylindrical part extending in the center line parallel to the axis of the planetary gear and a bearing part pivotally supporting the cylindrical part,
The operation knob is a seat operation device having one of the cylindrical portion and the bearing portion. In the sheet operating device according to any one of claims 1 to 3,
The seat position adjustment mechanism is a slide mechanism that adjusts the front-rear position of the seat,
A lifter operating lever coupled to rotate integrally with a second operating shaft that operates a lifter mechanism that adjusts the vertical position of the seat in accordance with rotation about an axis parallel to the axis of the operating shaft;
The operation lever is interposed between the operation knob and the lifter operation lever, and when the operation knob is operated so as to move along the direction of the linear motion, the lifter operation lever is released, and the operation knob is A sheet operating device comprising: a switching mechanism that integrally rotates the lifter operating lever in a state in which the connecting portion is released when operating to rotate. In the sheet operating device according to claim 4,
The switching mechanism is
A circumferential groove formed on the operation knob and allowing rotation of the lifter operation lever around the second operation shaft with respect to the operation lever when the operation shaft is in a corresponding initial position;
A lifter guide groove formed on the operation knob and allowing movement of the operation knob with respect to the lifter operation lever along the direction of the linear motion when the second operation shaft is at a corresponding initial position. The sheet operating device.

Images