JP2014051135A - Vehicle seat and input device for manipulated variable to vehicular seat adjustment mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which allows a passenger to easily get on and off a vehicle, and an input device for a manipulated variable to a vehicular seat adjustment mechanism which prevents an unnecessary manipulated variable from being input to the vehicle seat adjustment mechanism.SOLUTION: A vehicle seat 10 includes a seat cushion 12 having side support parts 14, 16 provided at seat-width-directional ends along a seat front-rear direction. The side support part 16 provided on the seat right side is configured to tilt through a side support part tilting device 18. Further, a manipulated variable limiting mechanism which prevents a manipulated variable exceeding a predetermined manipulated variable from being input from the manipulated variable input device 20 to the side support part tilting device 18 is applied to the manipulated variable input device 20.

Description

  The present invention relates to an operation amount input device for a vehicle seat and a vehicle seat adjustment mechanism.

  Conventionally, a vehicle seat in which a side cushion for securing a seated occupant is provided on a seat cushion is known (see, for example, Patent Document 1 below). In addition, in the vehicle seat described in Patent Document 1 below, the side support is lowered toward the seat lower side in conjunction with the opening of the side door, so that it is easy for an occupant to get on and off the vehicle. doing.

JP 2007-282746 A

  However, since the vehicle seat described in Patent Document 1 has a configuration in which the side support is lowered according to the opening degree of the side door, the side support is not sufficiently lowered when the opening degree of the side door is small. Therefore, the vehicle seat described in Patent Document 1 has room for improvement in terms of facilitating getting on and off of the vehicle by the occupant when the opening degree of the side door is small.

  Further, in the vehicle seat described in Patent Document 1, the operation amount associated with the opening of the side door is input to the vehicle seat adjustment mechanism (rotation mechanism for lowering the side support) via a single cable. It is a configuration. Therefore, for example, if the side support is set to be sufficiently lowered while the side door opening is small, an unnecessary operation amount may be input to the vehicle seat adjustment mechanism when the side door opening is large. Conceivable.

  In view of the above facts, the present invention has as its first object to obtain a vehicle seat that makes it easy for passengers to get on and off the vehicle, and an unnecessary operation amount is transferred to the vehicle adjustment mechanism. It is a second object to obtain an operation amount input device for a vehicle seat adjustment mechanism that can prevent the input.

  A vehicle seat according to a first aspect of the present invention includes a side support portion provided at an end portion in the seat width direction along the front-rear direction of the seat, and the side support portion is lowered toward the seat lower side according to an operation amount. A seat cushion having a side support portion adjustment mechanism, and an operation amount for lowering the side support portion is input to the side support portion adjustment mechanism, and an operation amount exceeding a predetermined operation amount is input to the side support portion adjustment mechanism. And an operation amount input device having an operation amount restriction mechanism for inputting the predetermined operation amount to the side support unit adjustment mechanism.

  In the first aspect of the present invention, the side support is configured to be lowered when the adjusting mechanism provided on the seat cushion is operated. In addition to the operation amount being input to the side support unit adjustment mechanism via the operation amount input device, an operation amount exceeding a predetermined operation amount is input to the side support unit adjustment mechanism to the operation amount input device. An operation amount limiting mechanism is provided to prevent this. In other words, even if an operation amount exceeding the predetermined operation amount is input to the operation amount input device, an operation amount exceeding the predetermined operation amount is not input to the side support unit adjustment mechanism.

  Here, in a state where the opening degree of the side door of the vehicle is small, the predetermined operation amount is set to be input to the operation amount input device, and the predetermined operation amount is input to the operation amount input device. If the side support is set to be lowered to a predetermined position, the side support is lowered to the predetermined position when the opening degree of the side door of the vehicle is small. That is, even when the opening degree of the side door of the vehicle is small, the side support is lowered to a predetermined position. Therefore, when the occupant gets into the vehicle or when the occupant gets out of the vehicle, the side support is less likely to come into contact with the occupant.

  A vehicle seat according to a second aspect of the present invention is the vehicle seat according to the first aspect, wherein the operation amount limiting mechanism is connected to the side support portion adjustment mechanism and inputs an operation amount to the side support portion adjustment mechanism. The first member to be operated and an operation amount corresponding to the operation are input to the first member, and when the operation amount exceeding the predetermined operation amount is input, the predetermined operation amount is input to the first member. And two members.

  In the second aspect of the present invention, an operation amount limiting mechanism that prevents an operation amount exceeding a predetermined operation amount from being input to the side support portion adjustment mechanism includes the first member and the second member. ing. Therefore, by adjusting the relationship between the first member and the second member, the operation amount input to the second member can be converted into a desired operation amount and input to the side support adjustment mechanism.

  The vehicle seat according to a third aspect of the present invention is the vehicle seat according to the second aspect, wherein the first member is a first cam connected to the side support portion adjusting mechanism, and the second member is The operation amount corresponding to an operation is input to the first cam by abutting the first cam and displacing the position of the first cam. When an operation amount exceeding a predetermined operation amount is input, The second cam is in sliding contact with the first cam and does not displace the position of the second cam.

  According to the third aspect of the present invention, the operation amount limiting mechanism includes the first cam and the second cam configured as described above. That is, when an operation amount exceeding a predetermined operation amount is input to the second cam, the second cam is brought into sliding contact with the first cam, and an operation amount exceeding the predetermined operation amount is transmitted from the second cam to the first cam. Is prevented. In other words, the two parts of the first cam and the second cam constitute a main part of a limit mechanism (a mechanism for preventing an operation amount exceeding a predetermined operation amount from being input to the side support unit adjustment mechanism).

  An operation amount input device for a vehicle seat adjustment mechanism according to a fourth aspect of the present invention is connected to the vehicle seat adjustment mechanism, and a first member that inputs the operation amount to the vehicle seat adjustment mechanism, And a second member that inputs the predetermined operation amount to the first member when an operation amount that exceeds the predetermined operation amount is input to the first member. .

  According to the fourth aspect of the present invention, when an operation amount exceeding a predetermined operation amount is input from the second member to the first member, the predetermined operation amount is input from the second member to the first member. It is configured. In other words, an operation amount exceeding the predetermined operation amount is not input from the second member to the first member. Therefore, even if an operation amount exceeding a predetermined operation amount is input from the second member to the first member, an operation amount exceeding the operation amount is suppressed from being input from the first member to the vehicle seat adjustment mechanism. The

  The operation amount input device to the vehicle seat adjustment mechanism according to the present invention described in claim 5 is the operation amount input device to the vehicle seat adjustment mechanism according to claim 4, wherein the first member is the vehicle seat. The first cam is connected to an adjustment mechanism, and the second member abuts on the first cam and displaces the position of the first cam to input an operation amount corresponding to the operation to the first cam. When the operation amount exceeding the predetermined operation amount is input, the second cam is slidably contacted with the first cam and the position of the second cam is not displaced.

  In the fifth aspect of the present invention, an operation amount input device to the vehicle seat adjustment mechanism is configured including the first cam and the second cam configured as described above. That is, when an operation amount exceeding a predetermined operation amount is input to the second cam, the second cam is brought into sliding contact with the first cam, and an operation amount exceeding the predetermined operation amount is transmitted from the second cam to the first cam. Is prevented. In other words, a main part of a limit mechanism (a mechanism for preventing an operation amount exceeding a predetermined operation amount from being input to the vehicle seat adjustment mechanism) is constituted by the first cam and the second cam. .

  The vehicle seat according to the first aspect of the present invention has an excellent effect that it is possible to easily get on and off the occupant from the vehicle.

  The vehicle seat according to the second aspect of the present invention has an excellent effect that the descending characteristic when the side support descends can be easily changed.

  The vehicle seat according to the third aspect of the present invention has an excellent effect that an increase in the number of parts constituting the operation amount limiting mechanism can be suppressed.

  The operation amount input device for the vehicle seat adjustment mechanism according to the fourth aspect of the present invention has an excellent effect that an unnecessary operation amount can be prevented from being input to the vehicle adjustment mechanism.

  The operation amount input device to the vehicle seat adjustment mechanism according to the fifth aspect of the present invention can suppress an increase in the number of parts constituting the operation amount input device to the vehicle seat adjustment mechanism. Has an excellent effect.

(A) is the perspective view which looked at the seat cushion frame of the vehicle seat of this embodiment from the seat diagonally front side, (B) is the plane which looked at the seat cushion frame shown by (A) from the seat lower side. FIG. It is an expansion perspective view which expands and shows the side support part tilting apparatus shown by FIG. 1 (A). (A) And (B) is the front view which looked at the side support part tilting apparatus shown by FIG. 2 from the seat back side. It is a perspective view which shows the operation amount input device shown by FIG. 1 (B). (A), (B) and (C) are perspective views showing the arrangement of the first cam and the second cam when an operation amount is inputted from the second cam to the first cam. (A) And (B) is a front view which shows the positional relationship of the passenger | crew's buttocks and the side support part seated on the seat cushion.

  Next, the vehicle seat according to the embodiment of the present invention will be described with reference to FIGS. In the following description, the front / rear / left / right / up / down directions will be described, and the front / rear / left / right / up / down directions viewed from the occupant seated on the vehicle seat will be indicated. The arrow UP indicates the upward direction, the arrow RH indicates the right direction, and the arrow LH indicates the left direction.

  As shown in FIG. 1, the vehicle seat 10 according to the present embodiment is a separate seat used for a driver seat or a passenger seat. Specifically, the vehicle seat 10 includes a seat cushion 12 that supports the occupant's buttocks and thighs, and a seat back (not shown) that supports the upper body of the occupant. As shown in FIGS. 6A and 6B, side support portions 14 and 16 extending along the seat front-rear direction are provided at both ends of the seat cushion 12 in the seat width direction. Further, the side support portion 16 provided on the right side of the seat is rotated at the inner end in the seat width direction by the vehicle seat adjustment mechanism and the side support portion tilting device 18 (see FIG. 1A) as the side support portion adjustment mechanism. It is configured to be tiltable as an axis. As a result, the end of the side support portion 16 on the outer side in the vehicle width direction can be raised and lowered in the seat vertical direction. Further, as shown in FIGS. 1A and 1B, an operation amount (operation force) is input to the side support unit tilting device 18 via an operation amount input device 20. Hereinafter, first, the seat cushion 12 and the side support portions 14 and 16 will be described, then the side support portion tilting device 18 will be described, and finally, the operation amount input device 20 which is a main portion of the present embodiment will be described.

(Seat cushion 12 and side support parts 14, 16)
The seat cushion 12 includes a pair of side frames 22 and 24 disposed on both sides in the seat width direction. The side frames 22 and 24 are formed in a substantially rectangular plate shape having the sheet width direction as the plate thickness direction and extending in the seat front-rear direction. The rear ends of the side frames 22 and 24 are connected by a rear frame 26 that is formed in a cylindrical shape with the sheet width direction as a longitudinal direction. Further, a panel frame 28 formed in a plate shape is attached to the front end portions of the pair of side frames 22 and 24 from above the seats of the side frames 22 and 24. In other words, the front end portions of the side frames 22 and 24 are connected by the panel frame 28. A plurality of wires 30 are stretched between the panel frame 28 and the rear frame 26. The plurality of wires 30, the panel frame 28, the rear frame 26, and the like support a load input from an occupant seated on the seat cushion 12 via a seat cushion pad (not shown).

  Further, at the upper end portion of the side frame 22 provided on the left side of the seat and the end portion of the left side of the panel frame 28 on the left side of the seat, the side support portion 14 (see FIG. A wire frame 34 forming the skeleton of FIG. 6) is joined.

  Further, a side support portion 16 (above the seat width direction) is protruded from the upper portion of the side frame 24 provided on the right side of the seat and the right side end of the panel frame 28 from the intermediate portion (seat surface 32) in the seat width direction. A wire frame 36 forming the skeleton of FIG. 6 is attached. Specifically, the wire frame 36 is attached to be tiltable via the side support portion tilting device 18 and the front bracket 38. Furthermore, the panel member 40 in which the circular hollow hole 40A was formed is joined to the wire frame 36.

  A cushion member such as a seat cushion pad (not shown) and a skin material are attached from above the side frames 22 and 24, the rear frame 26, and the panel frame 28, so that the seat cushion 12 having the side support portions 14 and 16 is obtained. It is configured. The seat cushion 12 is connected to the seat slide rails 46 and 48 via link portions 42 and 44 for adjusting the height of the seat cushion 12 in the vertical direction of the seat.

(Side support unit tilting device 18)
As shown in FIG. 2, the side support unit tilting device 18 includes a first shaft 50 that supports the wire frame 36 and the panel member 40A, a first link 52 that rotates the first shaft 50 around its axis, A link 54, a lever 56, and a hook 58.

  The first shaft 50 is formed in a round bar shape whose axial direction is the front-rear direction of the seat, the front end is rotatably supported by the front bracket 38 (see FIG. 1A), and the rear end is The side support portion tilting device 18 is rotatably supported by a base 60 that forms the outline of the side support portion tilting device 18. Further, as shown in FIGS. 3A and 3B, the first shaft 50 is urged counterclockwise (in the direction of arrow A) by the return spring 62 as viewed from the rear of the seat.

  As shown in FIG. 2, the first link 52 is formed in an elliptical shape when viewed from the front of the seat, and is formed in a thick plate shape with the front-rear direction of the seat being the thickness direction. One end of the first link 52 is fixed to an intermediate portion of the first shaft 50 in the front-rear direction of the seat, and the other end of the first link 52 is connected to a second link 54 described later via a connection pin 64. ing.

  The second link 54 is a press-formed product formed by pressing the plate material, and is formed in a substantially T shape in the rear view of the seat as shown in FIGS. 3 (A) and 3 (B). Has been. Specifically, the second link 54 includes a base portion 54A that extends in the vertical direction of the seat, and an extension portion 54B that extends from the lower end side of the base portion 54A toward the inside in the seat width direction (the left side of the seat). Yes. Further, as described above, the other end of the first link 52 is connected to the upper end portion of the base portion 54A via the connecting pin 64 whose axial direction is the front and rear of the seat. The lower end portion of the base portion 54A is connected to one end of a lever 56 described later via a connecting pin 66. Further, the side support portion 16 is tilted at the front end portion of the extension portion 54B by being locked in a lock groove 58A formed in the hook 58 (the end portion on the outer side in the seat width direction of the side support portion 16 is the lower side of the seat). The lock pin 68 is provided for restricting the movement of the lock pin 68.

  As shown in FIG. 2, the lever 56 is a press-formed product formed by pressing a plate material. As shown in FIGS. 3A and 3B, the lever 56 is viewed from the back of the seat. It is formed in a substantially L shape having a bent portion at an intermediate portion in the sheet width direction. Specifically, the intermediate portion of the lever 56 in the seat width direction is supported by the second shaft 70 supported by the base 60 at both ends, with the longitudinal direction of the seat being the axial direction. In addition, as described above, the lower end portion of the base portion 54A of the second link 54 is connected to one end of the lever 56 (the end portion on the outer side (right side) in the seat width direction) via the connecting pin 66 having the seat longitudinal direction as the axial direction. It is connected. Further, the other end portion of the lever 56 is provided with a contacted portion 72 that connects the front wall 56A and the rear wall 56B of the lever 56 in the front-rear direction of the seat and abuts the lower end of a hook 58 described later. .

  As shown in FIGS. 2, 3 (A) and 3 (B), the hook 58 is formed in an elliptical shape when viewed from the rear of the seat, and is formed in a thin plate shape with the longitudinal direction of the seat as the thickness direction. ing. Specifically, the hook 58 is disposed between the front wall 56A and the rear wall 56B of the lever 56 described above, and one end of the hook 58 (the end on the outer side (right side) in the seat width direction) is the first. Two shafts 70 are rotatably supported. Further, one end of the cable 74 is locked to the other end of the hook 58 (the end portion on the inner side (left side) in the sheet width direction). One end of the tube 76 through which the cable 74 is inserted is held by a holder 78. Further, a concave lock groove 58A that is open to the upper side of the seat is formed in the intermediate portion of the hook 58 in the seat width direction.

(Operation amount input device 20)
As shown in FIG. 4, the operation amount input device 20 inputs an operation amount for tilting the side support unit 16 (see FIG. 6) to the side support unit tilting device 18 (see FIG. 2), and a predetermined operation amount. An operation amount limiting mechanism that prevents an operation amount exceeding 1 from being input to the side support unit tilting device 18 is configured. Specifically, the operation amount input device 20 includes a base frame 80 and a first cam 82 as a first member and a second cam 84 as a second member that constitute a main part of the operation amount restriction mechanism. ing.

  The base frame 80 is a press-formed product formed by pressing a plate material, and is formed in a rectangular shape whose longitudinal direction is the sheet width direction when the sheet is viewed downward (see FIG. 1B). Yes. Specifically, the base frame 80 includes a base portion 80A extending in the seat front-rear direction and the width direction. In addition, the base frame 80 includes a first support portion 80B formed by bending the left end portion of the base portion 80A toward the seat lower side. The first support portion 80B is formed with a groove portion 80C in which the other end of the tube 76 through which the cable 74 is inserted is locked. Furthermore, the base frame 80 includes a second support portion 80D formed by bending an end portion on the right side of the base portion 80A toward the lower side of the seat. Further, the second support portion 80D is formed with a groove portion 80F in which one end of the tube 88 through which the cable 86 is inserted is locked. Further, the base frame 80 is provided with a spring locking portion 80E having a groove portion 80G to which one end of a return spring 98 described later is locked. The base frame 80 includes rib portions 80H, 80I, and 80J formed by bending the ends of the base portion 80A in the front-rear direction of the seat toward the seat lower side. The ribs 80H, 80I, and 80J improve the rigidity of the base frame 80 in the seat width direction. Furthermore, fastening portions 80K and 80L to the panel frame 28 (see FIG. 1B) are provided at both ends of the base portion 80A of the base frame 80 in the sheet width direction. The fastening portions 80K and 80L are formed with circular insertion holes 80M and 80N, and weld nuts (not shown) arranged coaxially with the insertion holes 80M and 80N are joined by welding.

  As shown in FIGS. 4 and 5A to 5C, the first cam 82 is formed in a substantially L shape when viewed from the lower side of the sheet, and is thick with the sheet vertical direction as the plate thickness direction. It is formed in a plate shape. Further, a circular insertion hole (not shown) whose axial direction is the plate thickness direction of the first cam 82 is formed at a portion of the first cam 82 bent in an L shape. A collar 90 arranged coaxially with the insertion hole is joined by welding. Further, the collar 90 is fixed to the base portion 80B of the base frame 80, and a pin (not shown) is inserted therethrough, and a bolt 92 is screwed into the tip of the pin. As a result, the first cam 82 can be rotated about the pin as an axis. The first cam 82 includes a first extending portion 82B extending toward the first support portion 80B of the base frame 80, and a second extending portion 82C extending toward the second cam 84 described later. Yes. A locking hole 82D for locking the other end of the cable 74 is formed at the distal end of the first extending portion 82B in the extending direction. That is, the first extending portion 82B of the first cam 82 and the hook 58 (see FIG. 2) of the side support portion tilting device 18 are connected via the cable 74. Further, corner portions 82E and 82F are formed at the distal end of the second extending portion 82C in the extending direction. Furthermore, the tip of the corner portion 82E disposed on the second cam 84 side is a sliding contact surface S1 on which a sliding contact surface S2 of the second cam 84, which will be described in detail later, slides.

  The second cam 84 is formed in a substantially fan shape when viewed from the lower side of the sheet, and is formed in a thick plate shape in which the sheet vertical direction is the plate thickness direction. A circular insertion hole (not shown) is formed on the proximal end side of the second cam 84 with the plate thickness direction of the second cam 84 as an axial direction. A collar 94 arranged on the same axis is joined by welding. Further, similarly to the collar 90 joined to the first cam 82, the collar 94 is fixed to the base portion 80B of the base frame 80 and a pin (not shown) is inserted, and a bolt 92 is screwed to the tip of this pin. It has been entered. As a result, the second cam 84 can be rotated about the pin as an axis. Further, one end of the collar 90 and one end of the collar 94 are connected by a connecting plate 96. Further, a return spring 98 is inserted into the collar 94. When the other end of the return spring 98 is locked to the second cam 84, the second cam 84 is urged in the direction of rotation in the direction of arrow B about the pin inserted through the collar 94. Yes. Further, the end of the second cam 84 in the direction of arrow B abuts against the rib portion 80H of the base frame 80, whereby the rotation of the second cam 84 in the direction of arrow B is restricted. The tip of the second cam 84 is an arcuate surface 84A whose surface is directed to the first cam 82 side. The arc surface 84A is set to have a radius R from the axial center of the bearing hole formed on the base end side of the second cam 84. Further, the arc surface 84A is a sliding contact surface S2 that is in sliding contact with the corner portion 82E of the first cam 82. In addition, an abutting portion 84B that protrudes in the direction of the arrow C direction is formed at the end of the second cam 84 on the tip end side. The contact portion 84B is in contact with the second extension portion 82C of the first cam 82 in a state where the end portion of the second cam 84 in the direction of arrow B is in contact with the rib portion 80H of the base frame 80. Furthermore, a locking hole 84 </ b> C for locking one end of the cable 86 is formed at the end of the second cam 84 on the arrow C direction side.

  Further, the other end of the cable 86 is connected to an operation amount input section provided at a hinge portion of a side door (not shown). More specifically, the cable 86 is configured to be pulled in the arrow D direction according to the opening degree at which the side door is opened (as the turning angle of the side door increases).

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 5A, when the cable 86 is pulled in the direction of arrow D (when the side door is opened), the second cam 84 resists the urging force of the return spring 98 in the direction of arrow C. (The operation amount is input to the second cam 84). Then, the contact portion 84B of the second cam 84 presses the second extending portion 82C of the first cam 82, and the first cam 82 rotates in the direction of arrow E as shown in FIG. . That is, when the second cam 84 displaces the position of the first cam 82, the operation amount input to the second cam 84 is input to the first cam 82. As a result, the cable 74 locked to the first extending portion 82B of the first cam 82 is pulled in the arrow F direction. That is, when the first cam 82 is rotated (by the cable 74 being pulled in the direction of arrow F), the operation amount input to the first cam 82 is changed to the side support portion tilting device 18 (hook 58) (see FIG. 2). ).

  On the other hand, when the cable 74 is pulled in the direction of the arrow F by the first cam 82, the hook 58 rotates in the direction of the arrow G about the second shaft 70 as shown in FIGS. 3A and 3B. To do. Then, the lock between the lock groove 58A of the hook 58 and the lock pin 68 of the second link 54 is released. Further, when the hook 58 further rotates in the direction of arrow G about the second shaft 70 as the axis center, the lower end portion of the hook 58 abuts on the contacted portion 72 of the lever 56 and the lever 56 centers on the second shaft 70. As shown in FIG. The one end side of the hook 58 pushes up the second link 54, and the first link 52 rotates the first shaft 50, whereby the side support portion 16 tilts as shown in FIGS. 6 (A) and 6 (B). To do. As a result, the end of the side support portion 16 on the outer side in the sheet width direction (the end on the right side of the sheet) is lowered toward the lower side of the sheet.

  Further, as shown in FIGS. 5B and 5C, when the cable 86 is further pulled in the direction of arrow D (when the turning angle of the side door is further increased), the contact portion 84B of the second cam 84 is obtained. Passes over the corner 82E of the first cam 82, and the sliding contact surface S2 of the second cam 84 slides on the tip (sliding contact surface S1) of the corner 82E of the first cam 82. Here, in the present embodiment, the sliding contact surface S2 of the second cam 84 is an arcuate surface 84A having a radius R from the axial center of the bearing hole formed on the proximal end side of the second cam 84. Therefore, when the sliding contact surface S2 of the second cam 84 is in sliding contact with the sliding contact surface S1 of the first cam 82, the first cam 82 does not rotate any further. In other words, even if the cable 86 is pulled beyond the pulling margin L2, the first cam 82 does not pull the cable 74 beyond the pulling margin L1.

  Here, in a state where the opening degree of the side door of the vehicle is small, when the pulling allowance of the cable 86 is set to L2, as shown in FIG. 6B, the opening degree of the side door of the vehicle is small. The side support portion 16 is lowered to a predetermined position. Therefore, when the occupant P gets into the vehicle or when the occupant P gets out of the vehicle, the side support portion 16 is less likely to come into contact with the occupant P. That is, in the present embodiment, by setting as described above, it is possible to make it easier for the occupant P to get on and off the vehicle.

  In the present embodiment, the first cam 82 does not pull the cable 74 beyond the pulling margin L1 even if the cable 86 is pulled beyond the pulling margin L2 due to the rotation angle of the side door becoming large. It has become. Therefore, in the present embodiment, the operation amount exceeding the predetermined value (the pulling distance L1 of the cable 74) is input from the second cam 84 to the side support portion tilting device 18 (hook 58) via the first cam 82 and the cable 74. This can be prevented. That is, in this embodiment, it is possible to prevent an unnecessary operation amount from being input to the side support unit tilting device 18.

  Furthermore, in this embodiment, the operation amount limiting mechanism is configured including the first cam 82 and the second cam 84 configured as described above. Therefore, for example, by appropriately setting the distance from the rotation center of the first cam 82 to the locking hole 82D of the cable 74, the distance from the rotation center of the second cam 84 to the locking hole 84C of the cable 86, and the like. The operation amount input to the second cam 84 can be converted into a desired operation amount and input to the side support unit tilting device 18.

  In the present embodiment, the example in which the operation amount limiting mechanism is configured including the first cam 82 and the second cam 84 configured as described above has been described, but the present invention is not limited to this. That is, a mechanism that prevents an operation amount exceeding a predetermined operation amount from being input to the side support unit tilting device 18 may be applied.

  In the present embodiment, an example in which the operation amount is input to the side support unit tilting device 18 via the operation amount input device 20 has been described, but the present invention is not limited to this. For example, the operation amount can be transmitted to the reclining mechanism and the slide mechanism as the vehicle seat adjustment mechanism via the operation amount input device 20.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

10 Vehicle seat
12 Seat cushion
14 Side support part
16 Side support part
18 Side support part tilting device (side support part adjustment mechanism, for vehicles
Sheet adjustment mechanism)
20 Operation amount input device
82 First cam (first member)
84 Second cam (second member)

Claims (5)

A seat cushion having a side support portion provided at the end in the seat width direction along the seat front-rear direction, and a side support portion adjustment mechanism that lowers the side support portion toward the seat lower side according to the operation amount;
An operation amount for lowering the side support portion is input to the side support portion adjustment mechanism. When an operation amount exceeding a predetermined operation amount is input to the side support portion adjustment mechanism, the predetermined operation amount is input to the side support portion. An operation amount input device having an operation amount restriction mechanism for inputting to the head adjustment mechanism;
Vehicle seat equipped with The operation amount limiting mechanism is:
A first member connected to the side support portion adjustment mechanism and for inputting an operation amount to the side support portion adjustment mechanism;
A second member that inputs an operation amount corresponding to an operation to the first member, and inputs the predetermined operation amount to the first member when an operation amount that exceeds a predetermined operation amount is input;
The vehicle seat according to claim 1, comprising: The first member is a first cam connected to the side support portion adjustment mechanism,
The second member contacts the first cam and displaces the position of the first cam to input an operation amount corresponding to the operation to the first cam, and an operation amount exceeding a predetermined operation amount is input. The vehicle seat according to claim 2, wherein the second seat is a second cam that slides into contact with the first cam and does not displace the position of the second cam. A first member coupled to the vehicle seat adjustment mechanism and for inputting an operation amount to the vehicle seat adjustment mechanism;
A second member that inputs an operation amount corresponding to an operation to the first member, and inputs the predetermined operation amount to the first member when an operation amount that exceeds a predetermined operation amount is input;
An operation amount input device for a vehicle seat adjustment mechanism comprising: The first member is a first cam connected to the vehicle seat adjustment mechanism,
The second member contacts the first cam and displaces the position of the first cam to input an operation amount corresponding to the operation to the first cam, and an operation amount exceeding a predetermined operation amount is input. The operation amount input device to the vehicle seat adjustment mechanism according to claim 4, wherein when the operation is performed, the second cam is slidably contacted with the first cam and the position of the second cam is not displaced.

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