JP4500934B2 - Seat rotating slide device - Google Patents

Description

  The present invention relates to a seat rotation slide device including a rotation mechanism that rotatably supports a seat body, and a slide mechanism that supports the seat body so as to be slidable back and forth integrally with the rotation mechanism.

Various devices have been proposed as the above-described seat rotation slide device.
For example, the seat rotation slide device 100 described in Patent Document 1 is a device used for a passenger seat, and is configured to be able to rotate by about 90 ° from a vehicle front-facing position to a left-facing position facing the entrance / exit. As shown in FIG. 6, the seat rotation slide device 100 includes a slide table 102 supported by a front / rear slide mechanism (not shown) so as to be slidable in the vehicle front-rear direction. On the slide table 102, a rotating ring 104 including an inner ring 104e and an outer ring 104r configured to be relatively rotatable is installed, and the outer ring 104r of the rotating ring 104 is fixed to the upper surface of the slide table 102. A rotary table 107 is supported on the inner ring 104 e of the rotary ring 104, and a seat body 108 is installed on the rotary table 107. An arc member 105 concentric with the inner ring 104 is fixed to the lower surface of the rotary table 107. On the outer peripheral surface of the arc member 105, a tooth missing portion 105k is formed with a central angle of about 40 ° from one end side, and a tooth with a central angle of about 50 ° from the end of the tooth missing portion 105k is formed. A row portion 105w is formed. On the vehicle floor side, on the left side of the slide table 102, a rack 106 that can mesh with the tooth row portion 105w of the arc member 105 is installed so as to extend in the vehicle front-rear direction.

Between the slide table 102 and the vehicle floor, there is provided a slide lock mechanism (not shown) that prohibits the slide table 102 from sliding back and forth while the tooth row 105w of the arc member 105 and the rack 106 are not meshed with each other. Yes. Further, an arc-shaped lock release plate 109 for releasing the lock state of the slide lock mechanism is attached to the lower surface of the rotary table 107 while the tooth row portion 105 w of the arc member 105 is engaged with the rack 106. .
With the above configuration, while the seat body 108 is rotated about 40 ° counterclockwise from the vehicle forward position, the toothless portion 105k of the arc member 105 is at the position of the rack 106, and the slide lock mechanism is in a locked state, and the seat body 108 Is held at the end position.
When the seat main body 108 further rotates counterclockwise from this state and the locked state of the slide lock mechanism is released, the tooth row portion 105w of the arc member 105 meshes with the rack 106, and the seat main body 108 rotates forward while moving counterclockwise. It comes to slide. As a result, the sheet main body 108 does not interfere with a pillar or the like located on the left side.

Japanese Patent Laid-Open No. 10-329591

The seat rotation slide device 100 described above forms the missing tooth portion 105k and the tooth row portion 105w on the arc member 105, and when the missing tooth portion 105k is at the position of the rack 106, the slide lock mechanism is locked. In this configuration, the sheet main body 108 is rotated at the end position. Further, when the tooth row portion 105w of the arc member 105 meshes with the rack 106, the lock state of the slide lock mechanism is released by the lock release plate 109, and the seat body 108 is slidably held.
As described above, since the slide lock mechanism and the lock release plate 109 are provided and the lock state of the slide lock mechanism is released during the rotation of the seat main body 108, the configuration of the seat rotation slide device 100 is complicated.

  The present invention has been made to solve the above problems, and the problem to be solved by the present invention is to simplify the configuration of the sheet rotation slide device by eliminating the need for a slide lock mechanism, a lock release plate, etc. This is to reduce costs.

The above-described problems are solved by the inventions of the claims.
Invention of Claim 1 is a sheet | seat rotation slide apparatus provided with the rotation mechanism which supports a sheet | seat main body so that rotation is possible, and the slide mechanism which supports the said sheet | seat main body so that back-and-forth sliding is possible integrally with the said rotation mechanism,
A first gear member having an arcuate tooth row centered on the rotation center of the rotating part, provided rotatably on the rotating part side of the rotating part and the non-rotating part constituting the rotating mechanism. When,
On the non-sliding side of the sliding part and the non-sliding part constituting the sliding mechanism, the sheet body rotates within a predetermined range around a position in front of the rotation center of the rotating part when the seat body is at the rearmost position. And a second gear unit that includes an arcuate gear portion having an arcuate tooth row centered on the rotation center, and a linear gear portion having a straight tooth row connected to the tooth row of the arcuate gear portion. A gear member,
When the seat body is at the rearmost position of the slidable range, the arcuate gear portion meshes with the first gear member with the second gear member positioned at one end of the rotatable range, Rotation in the direction is possible by rotating the second gear member from one end to the other end of the rotatable range, but rotation of the seat body in the reverse direction is possible by the second gear member. Rotation is restricted at one end of the range, and the forward sliding of the seat body is restricted by interference between the first gear member and the arcuate gear portion of the second gear member,
When the second gear member rotates to the other end of the rotatable range by rotating the seat body in the forward direction, the linear gear portion of the second gear member is parallel to the sliding direction of the seat body, The first gear member meshes with the linear gear portion, and when the seat body is further rotated in the forward direction, the seat body slides forward.

According to the present invention, when the seat body is at the end position of the slidable range, the arcuate gear portion is engaged with the first gear member in a state where the second gear member is positioned at one end of the rotatable range. Then, the rotation of the seat body in the positive direction is caused by the engagement of the first gear member and the arcuate gear portion of the second gear member, so that the second gear member rotates from one end to the other end of the rotatable range. Is possible. However, the rotation of the seat body in the reverse direction is not possible because the rotation of the second gear member is restricted at one end of its rotatable range. Further, the forward sliding of the seat body is restricted by the interference between the first gear member and the arcuate gear portion of the second gear member. For this reason, when the seat body is rotated at the rearmost position, there is no need to restrict the forward slide of the seat body with the slide lock mechanism as in the prior art.
When the second gear member rotates to the other end of the rotatable range by rotating the seat body in the forward direction, the linear gear portion of the second gear member becomes parallel to the sliding direction of the seat body. The first gear member meshes with the linear gear portion. Accordingly, when the seat body is further rotated in the forward direction, the seat body slides forward.
That is, after the second gear member rotates to the other end of the rotatable range, the seat body slides forward while rotating in the forward direction.
In this way, the seat body is rotated in the positive direction by a predetermined angle at the end position while restricting the forward sliding of the seat body only by the meshing action of the first gear member and the second gear member, The seat body can be slid forward while rotating in the forward direction. This eliminates the need for a conventional slide lock mechanism, lock release plate, and the like, simplifies the configuration of the seat rotation slide device, and reduces the cost.

According to a second aspect of the present invention, the first gear member is configured to mesh with the second gear member via a rotatable intermediate gear installed on the slide portion of the slide mechanism together with the first gear member. To do.
That is, the rotation of the first gear member is converted in the reverse direction by the intermediate gear and transmitted to the second gear member. For this reason, when the first gear member and the second gear member are directly meshed, the arrangement of the first gear member and the second gear member can be switched.

  According to the present invention, since the slide lock mechanism, the lock release plate, and the like, which are conventionally required, are unnecessary, the configuration of the sheet rotation slide device is simplified, and the cost can be reduced.

[Embodiment 1]
Hereinafter, based on FIGS. 1-5, the sheet | seat rotation slide apparatus which concerns on Embodiment 1 of this invention is demonstrated. The seat rotation slide device according to the present embodiment is a device used as a passenger seat of a vehicle, and FIG. 1 is an overall schematic perspective view of the seat rotation slide device. 2 is a plan view showing the meshing state of the first gear member and the second gear member of the seat rotating and sliding device, and FIG. 3 is a view taken along the line III-III in FIG. FIG. 4 is a plan view showing the operation of the sheet rotation slide device.
In addition, front and rear, right and left and up and down in the figure correspond to front and rear, right and left and up and down in the vehicle.

<About the outline of the sheet rotation slide device 1>
The seat rotation slide device 1 according to the present embodiment, when the seat body 10 is rotated about 90 ° counterclockwise from the vehicle forward position to the lateral position facing the entrance / exit side, the seat body 10 is moved from the vehicle forward position to about 30 at the rearmost position. This is an apparatus that can rotate leftward and then rotate leftward about 60 ° while sliding the seat body 10 forward.
As shown in FIG. 1 and the like, the sheet rotation slide device 1 includes a rotation mechanism 30 that rotatably supports the seat body 10, and a front and rear slide mechanism 20 that supports the sheet body 10 so as to be slidable back and forth integrally with the rotation mechanism 30. It has.

<Fore-and-aft slide mechanism 20>
As shown in FIGS. 1, 3, and the like, the front / rear slide mechanism 20 includes a pair of left and right fixed-side rails 22 that are installed on the vehicle floor F so as to extend in the vehicle front-rear direction. And a slide table 24 supported in a movable state. The slide table 24 also constitutes non-rotating portions of rotating mechanisms 30, 35, and 24, which will be described later.
The fixed rail 22 is formed by an upper rail 22u and a lower rail 22d in a substantially U-shaped cross section as shown in FIG. 3 and the like, and is formed on the left and right edges of the slide table 24 in the substantially U-shaped recess. The movable rail portion 24s is accommodated. A large number of balls 26 are rotatably fitted between the movable rail portion 24s and the upper rail 22u and between the movable rail portion 24s and the lower rail 22d. Thereby, the slide table 24 can move smoothly along the fixed rail 22.
That is, the fixed side rail 22 and the vehicle floor F correspond to the non-sliding portion that constitutes the sliding mechanism of the present invention, and the slide table 24 corresponds to the sliding portion.

<Rotation mechanism 30 and first gear member>
On the upper surface of the slide table 24, the main body 30 (hereinafter referred to as the rotation mechanism 30) of the rotation mechanisms 30, 35, 24 is installed on the left side thereafter. The rotation mechanism 30 has an inner ring 32 and an outer ring 33 that can be rotated relative to each other. Between the V groove formed in the outer circumferential direction of the inner ring 32 and the V groove formed in the inner circumferential direction of the outer ring 33. A large number of balls (not shown) are sandwiched. As a result, the outer ring 33 can be rotated smoothly and without rattling with respect to the inner ring 32. An inner ring 32 of the rotation mechanism 30 is fixed to the slide table 24, and a rotation table 35 is installed on the outer ring 33. The seat body 10 is installed on the rotary table 35 via a pair of left and right auxiliary slide mechanisms 50.
Further, a first gear portion 33w having a gear-like tooth row is formed on the outer peripheral surface of the outer ring 33 of the rotating mechanism 30, and the first gear portion 33w is formed in a gear-like shape as shown in FIG. The second gear member 42 is meshed with the intermediate gear 41 (see FIGS. 1 and 2). The intermediate gear 41 is attached to the slide table 24 in a rotatable configuration (see FIG. 3), and is held in a fixed positional relationship with the first gear portion 33w in the horizontal direction.
That is, the inner ring 32 and the slide table 24 correspond to the non-rotating part of the rotating mechanism of the present invention, and the outer ring 33 and the rotating table 35 correspond to the rotating part of the rotating mechanism of the present invention. Moreover, the outer ring | wheel 33 provided with the 1st gear part 33w is equivalent to the 1st gear member of this invention.

<About the second gear member 42>
As shown in FIG. 2, the second gear member 42 is a substantially trapezoidal plate-like member, and a right end surface 42r corresponding to the upper base of the trapezoid and a front end surface 42f corresponding to the trapezoidal leg are substantially perpendicular to each other. Is formed. The vicinity of the corner between the right end surface 42r and the front end surface 42f of the second gear member 42 is connected to the support pin 3 erected on the vehicle floor F so as to be horizontally rotatable. As shown in FIG. 2, the support pin 3 is disposed in front of the rotation center of the rotation mechanism 30 when the slide table 24 (the seat body 10) is at the rearmost position. The second gear member 42 is formed with a linear gear portion 42w having a linear tooth row on the left end surface corresponding to the lower base of the trapezoid, and is continuously arcuate after the linear gear portion 42w. An arcuate gear portion 42e having a plurality of tooth rows is formed.
The length dimension from the front end to the rear end of the linear gear portion 42w is set to a dimension equal to the arc length corresponding to the central angle of about 60 ° in the first gear portion 33w provided in the outer ring 33. The arc center of the arcuate gear portion 42e coincides with the axis of the support pin 3, and the center angle θ of the arcuate gear portion 42e is set to about 17 °. The arc length of the arcuate gear portion 42e is set to a value equal to the arc length corresponding to the central angle of about 30 ° of the first gear portion 33w.

In the second gear member 42, a rear end face 42b is formed at a position opposite to the front end face 42f in a state inclined by about 60 ° with respect to the linear gear portion 42w, and on the rear side of the rear end face 42b, A receiving surface 42u parallel to the linear gear portion 42w is formed.
Further, on the vehicle floor F, a first stopper 4 and a second stopper 5 are installed that restrict the rotation range when the second gear member 42 rotates around the support pin 3. The first stopper 4 is a prismatic stopper that restricts the second gear member 42 from rotating clockwise in FIG. 2, and is configured such that the front end face 42f of the second gear member 42 can come into contact therewith. . The second stopper 5 is a prismatic stopper that restricts the second gear member 42 from rotating counterclockwise in FIG. 2, and is configured such that the receiving surface 42u of the second gear member 42 can come into contact therewith. ing.

The first gear portion 33w provided on the outer ring 33 meshes with the arcuate gear portion 42e of the second gear member 42 via the intermediate gear 41 when the slide table 24 (seat body 10) is at the rearmost position. (See FIG. 2). When the seat body 10 is rotated counterclockwise together with the rotary table 35, the outer ring 33, the first gear portion 33w, and the like at the rearmost position, the intermediate gear 41 engaged with the first gear portion 33w rotates to the right (see arrow). ), The arcuate gear portion 42e of the second gear member 42 rotates counterclockwise around the support pin 3. Then, the receiving surface 42 u of the second gear member 42 contacts the second stopper 5 in a state where the second gear member 42 has rotated counterclockwise to the left rotation limit position.
When the second gear member 42 rotates counterclockwise and the boundary portion between the arcuate gear portion 42e and the linear gear portion 42w moves to the position of the intermediate gear 41 (see the solid line in FIG. 2). The receiving surface 42u of the second gear member 42 is positioned at a position where it abuts. In a state where the receiving surface 42 u of the second gear member 42 is in contact with the second stopper 5, the linear gear portion 42 w of the second gear member 42 is parallel to the fixed-side rail 22 of the front and rear slide mechanism 20.

Further, in a state where the receiving surface 42u of the second gear member 42 is in contact with the second stopper 5 (at the left rotation limit position), the seat body 10 is moved to the right together with the rotary table 35, the outer ring 33, the first gear portion 33w and the like. When rotated, the intermediate gear 41 meshing with the first gear portion 33w rotates counterclockwise, and the arcuate gear portion 42e of the second gear member 42 rotates clockwise around the support pin 3. Then, the front end face 42f of the second gear member 42 abuts against the first stopper 4 in a state where the second gear member 42 is rotated rightward to the right rotation limit position.
The first stopper 4 is moved when the second gear member 42 rotates to the right by about 17 ° from the left rotation limit position and the rear end portion of the arcuate gear portion 42e moves to the position of the intermediate gear 41 (see the two-dot chain line). The front end face 42f of the second gear member 42 is positioned at a position where it abuts. Further, the seat main body 10 is held at the vehicle frontward position with the front end face 42f of the second gear member 42 in contact with the first stopper 4.
That is, the position where the front end face 42f of the second gear member 42 contacts the first stopper 4 (right rotation limit position) corresponds to one end of the rotatable range of the second gear member in the present invention. The position where the receiving surface 42u contacts the second stopper 5 (left rotation limit position) corresponds to the other end of the rotatable range of the second gear member in the present invention. The left rotation of the seat body 10 corresponds to the forward rotation of the seat body in the present invention, and the right rotation of the seat body 10 corresponds to the reverse rotation of the seat body in the present invention.

As described above, the arc length of the arcuate gear portion 42e (center angle of about 17 °) in the second gear member 42 is an arc corresponding to the center angle of about 30 ° of the first gear portion 33w provided in the outer ring 33. The value is set equal to the length. For this reason, when the second gear member 42 rotates about 17 ° between the first stopper 4 and the second stopper 5, the first gear portion 33w provided on the outer ring 33 rotates about 30 °. Therefore, the sheet body 10 and the like are rotated within a range of about 30 ° while being stopped at the rearmost position.
In the state where the seat body 10 is rotated about 30 ° counterclockwise from the vehicle forward position and the second gear member 42 is rotated about 17 ° counterclockwise from the right rotation limit position to the left rotation limit position, the second gear member 42 is as described above. The linear gear portion 42 w is parallel to the fixed-side rail 22 of the front / rear slide mechanism 20. At this time, the receiving surface 42u of the second gear member 42 comes into contact with the second stopper 5, and the left rotation of the second gear member 42 is restricted, so that the second gear member 42 is held at this position. . For this reason, when the seat body 10 and the like are further rotated counterclockwise from this state, the intermediate gear 41 meshes with the linear gear portion 42w of the second gear member 42 while rotating clockwise. As a result, the intermediate gear 41 receives a forward force, and the intermediate gear 41 and the slide table 24 slide forward. As described above, the length dimension from the front end to the rear end of the linear gear portion 42w is set equal to the arc length corresponding to the central angle of about 60 ° of the first gear portion 33w provided on the outer ring 33. Has been. For this reason, the seat body 10 and the like rotate left by about 60 ° while sliding forward.

<About the auxiliary slide mechanism 50>
The pair of left and right auxiliary slide mechanisms 50 installed on the rotary table 35 includes a lower rail 51 fixed to the rotary table 35 side and an upper rail 52 fixed to the seat body 10 side, and the upper rail 52 is connected to the lower rail 51. Are slidably fitted. As shown in FIG. 1, a slide lock mechanism 54 is attached to the auxiliary slide mechanism 50 on the inner surface of the upper rail 52. The slide lock mechanism 54 is a mechanism that regulates the sliding of the upper rail 52 with respect to the lower rail 51, and is performed by engaging the engaging claw 54t with any of a plurality of engaging holes 51h formed in the longitudinal direction of the lower rail 51. That is, when the engagement claw 54t of the slide lock mechanism 54 is engaged with one of the engagement holes 51h of the lower rail 51 by the spring force of the coil spring 54s, the upper rail 52 is held slidably with respect to the lower rail 51. Further, by pulling up the engagement release lever 54r and rotating the engagement claw 54t away from the lower rail 51 against the spring force of the coil spring 54s, the engagement claw 54t and the engagement hole 51h are rotated. Can be disengaged.
The seat frame of the seat body 10 is fixed to the upper rail 52 of the auxiliary slide mechanism 50 by, for example, bolts and nuts.

<Operation of Sheet Rotating Slide Device 1>
Next, the operation of the sheet rotation slide device 1 according to the present embodiment will be described.
First, the procedure for rotating the seat body 10 from the vehicle forward position to the left lateral position facing the entrance D (see FIG. 4) by about 90 ° will be described.
In a state where the seat body 10 is in the vehicle forward position, the slide table 24 of the front / rear slide mechanism 20 is held at the rearmost position. Further, as shown by a two-dot chain line in FIG. 2, the second gear member 42 is in the right rotation limit position, and its front end surface 42 r is in contact with the first stopper 4. The rear end portion of the portion 42e meshes with the intermediate gear 41. In the state where the seat body 10 is in the vehicle forward position, the rotation lock mechanism (not shown) is in a locked state, and the rotation of the seat body 10 is restricted.
To rotate the seat body 10 counterclockwise, the seat body 10 is retracted to the retreat limit position using the auxiliary slide mechanism 50, and the lock state of the rotation lock mechanism is released. At this time, even if an attempt is made to rotate the seat body 10 to the right in FIG. 2, the right rotation of the second gear member 42 is restricted by the first stopper 4, so that the leftward rotation of the intermediate gear 41 is the second gear. Regulated by the arcuate gear portion 42e of the member 42, the seat body 10 does not rotate clockwise.

When the locked state of the rotation lock mechanism is released and the seat body 10 is rotated leftward in FIG. 2, the intermediate gear 41 that meshes with the first gear portion 33 w rotates to the right, The arcuate gear portion 42e of the meshed second gear member 42 rotates counterclockwise around the support pin 3. In this state, even if a forward pressing force is applied to the seat body 10, the first gear portion 33w and the arcuate gear portion 42e of the second gear member 42 are intermediate as shown by the two-dot chain line in FIG. Since it interferes in the vehicle front-rear direction via the gear 41, the slide table 24 of the front-rear slide mechanism 20 does not slide forward. That is, as shown in FIGS. 4 (A) and 4 (B), the seat body 10 rotates counterclockwise from the vehicle forward facing position while being stopped at the rearmost position.
Then, as the seat body 10 rotates leftward, the second gear member 42 rotates about 17 ° counterclockwise, and as shown by the solid line in FIG. 2, the arcuate gear portion 42e and the linear gear portion 42w of the second gear member 42. When the boundary portion reaches the position of the intermediate gear 41, the receiving surface 42u of the second gear member 42 contacts the second stopper 5. Thereby, the left rotation of the second gear member 42 is restricted. In this state, the seat body 10 turns to the left by about 30 ° from the vehicle forward position (see FIG. 4B).

As shown by the solid line in FIG. 2, in a state where the receiving surface 42 u of the second gear member 42 is in contact with the second stopper 5, the linear gear portion 42 w of the second gear member 42 is the fixed side rail of the front and rear slide mechanism 20. 22 and parallel. For this reason, when the seat body 10 and the like are further rotated counterclockwise from this state, the intermediate gear 41 meshes with the linear gear portion 42w of the second gear member 42 while rotating clockwise. As a result, the intermediate gear 41 receives a forward force, and the slide table 24 slides forward together with the intermediate gear 41. That is, as shown in FIGS. 4B and 4C, the seat body 10 rotates counterclockwise while sliding forward. Then, in a state where the intermediate gear 41 has reached the front end portion of the linear gear portion 42 w of the second gear member 42, the seat body 10 reaches a left lateral position facing the entrance / exit D.
As described above, the seat body 10 is left rotated about 30 ° while stopped at the rearmost end position, and further rotated left about 60 ° while sliding forward, so that a wide space can be secured for the occupant's feet. The tip does not interfere with the door. Further, since the seat body 10 rotates counterclockwise while sliding forward, the seat body 10 does not interfere with the pillar P located on the left side.
In order to return the seat body 10 from the left lateral position to the vehicle forward position, the seat body 10 is rotated rightward. Thus, contrary to the above, the seat body 10 rotates about 60 ° to the right while sliding backward, and then further rotates about 30 ° to the vehicle frontward position at the rearmost position.

<Advantages of the sheet rotation slide device 1 according to the present embodiment>
According to the seat rotation slide device 1 according to the present embodiment, when the seat body 10 is in the vehicle frontward position, the second gear member 42 is in the right rotation limit position, and the arcuate gear portion 42e is first through the intermediate gear 41. It meshes with the gear portion 33w. Then, the rotation of the seat body 10 in the left direction is caused by the engagement between the first gear portion 33w and the intermediate gear 41 and the engagement between the intermediate gear 41 and the arcuate gear portion 42e of the second gear member 42. This is possible by rotating the gear member 42 counterclockwise from the right rotation limit position. However, the rotation of the seat body 10 in the right direction is impossible because the rotation of the second gear member 42 is restricted at the right rotation limit position. Further, the forward sliding of the seat body 10 is restricted by the interference between the first gear portion 33 w and the arcuate gear portion 42 e of the second gear member 42 via the intermediate gear 41. For this reason, when the seat body 10 is rotated counterclockwise at the rearmost position, there is no need to regulate the forward sliding of the seat body 10 with the slide lock mechanism as in the prior art.
When the second gear member 42 is rotated to the left rotation limit position by rotating the seat body 10 to the left, the linear gear portion 42w of the second gear member 42 is parallel to the sliding direction of the seat body 10. At the same time, the first gear portion 33w meshes with the linear gear portion 42w via the intermediate gear 41. Accordingly, when the seat body 10 is further rotated leftward, the intermediate gear 41 and the like move forward along the linear gear portion 42w, so that the seat body 10 slides forward. That is, after the second gear member 42 rotates to the left rotation limit position, the seat body 10 slides forward while rotating in the left direction.
In this way, the seat body 10 is moved approximately 30 at the end position while restricting the forward sliding of the seat body 10 only by the meshing action of the first gear portion 33w, the intermediate gear 41, and the second gear member 42. The sheet main body 10 can be slid forward by rotating left by about 60 ° and then rotated left by about 60 °. This eliminates the need for a conventional slide lock mechanism, lock release plate, and the like, simplifies the configuration of the sheet rotation slide device 1, and reduces costs.

<Vehicle seat change example>
In addition, this invention is not limited to the said embodiment, The change in the range which does not deviate from the summary of this invention is possible. For example, in the present embodiment, the example in which the first gear portion 33w and the second gear member 42 are engaged with each other via the intermediate gear 41 has been shown. However, as shown in FIG. It is also possible to dispose the two gear member 42 so that the first gear portion 33w and the second gear member 42 are directly meshed with each other.
By using the intermediate gear 41, the rotation of the first gear portion 33w is converted in the reverse direction and transmitted to the second gear member. For this reason, it is possible to change the arrangement of the first gear portion 33w and the second gear member 42 when the first gear portion 33w and the second gear member 42 are directly meshed with each other.
Further, in the present embodiment, the example in which the rotation range of the second gear member 42 is regulated by the first stopper 4 and the second stopper 5 has been described. However, the arc-shaped length around the rotation center of the second gear member 42 is shown. It is also possible to restrict the rotation range of the second gear member 42 by forming a hole in the second gear member 42 and inserting a pin on the vehicle floor F side into the elongated hole.
In addition, although the seat body 10 is rotated about 30 ° to the left from the vehicle forward position at the rearmost position, and further rotated about 60 ° to the left while sliding forward, the rotation angle and the rotation direction can be changed as appropriate. .

It is a whole model perspective view of the sheet rotation slide device concerning Embodiment 1 of the present invention. It is a top view showing the meshing state of the 1st gear member of a sheet rotation slide device, and the 2nd gear member. It is the III-III arrow line view of FIG. It is a model top view showing operation | movement of a sheet | seat rotation slide apparatus. It is a top view showing the meshing state of the 1st gear member and the 2nd gear member concerning the example of a change of a sheet rotation slide device. It is a model top view showing the conventional sheet | seat rotation slide apparatus.

Explanation of symbols

F Vehicle floor (non-sliding part)
10 Seat body 20 Slide mechanism 22 Fixed side rail (non-sliding part)
24 Slide table (slide part, non-rotating part)
30 Rotating mechanism 32 Inner ring (non-rotating part)
33 Outer ring (rotating part, first gear member)
35 Rotary table (rotating part)
33w First gear portion 41 Intermediate gear 42 Second gear member 42w Linear gear portion 42e Arc-shaped gear portion

Claims (2)

A seat rotation slide device comprising: a rotation mechanism that rotatably supports a seat body; and a slide mechanism that supports the seat body so as to be slidable back and forth integrally with the rotation mechanism,
A first gear member having an arcuate tooth row centered on the rotation center of the rotating part, provided rotatably on the rotating part side of the rotating part and the non-rotating part constituting the rotating mechanism. When,
On the non-sliding side of the sliding part and the non-sliding part constituting the sliding mechanism, the sheet body rotates within a predetermined range around a position in front of the rotation center of the rotating part when the seat body is at the rearmost position. And a second gear unit that includes an arcuate gear portion having an arcuate tooth row centered on the rotation center, and a linear gear portion having a straight tooth row connected to the tooth row of the arcuate gear portion. A gear member,
When the seat body is at the rearmost position of the slidable range, the arcuate gear portion meshes with the first gear member with the second gear member positioned at one end of the rotatable range, Rotation in the direction is possible by rotating the second gear member from one end to the other end of the rotatable range, but rotation of the seat body in the reverse direction is possible by the second gear member. Rotation is restricted at one end of the range, and the forward sliding of the seat body is restricted by interference between the first gear member and the arcuate gear portion of the second gear member,
When the second gear member rotates to the other end of the rotatable range by rotating the seat body in the forward direction, the linear gear portion of the second gear member is parallel to the sliding direction of the seat body, The seat rotation slide device according to claim 1, wherein when the first gear member is engaged with the linear gear portion and the seat body is further rotated in the forward direction, the seat body slides forward. It is a sheet | seat rotation slide apparatus described in Claim 1, Comprising:
The first gear member is configured to mesh with the second gear member through a rotatable intermediate gear installed on the slide portion of the slide mechanism together with the first gear member.

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