JP2014227136A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an operation lever to be provided in a state where axial backlash is suppressed without increasing an operation load.SOLUTION: A vehicle seat includes: a rotary lifter lever 10 (an operation lever) attached to an internal skeleton of a seat cushion; and a shield 3S which is provided contacting with the lifter lever 10 in an axial direction. The lifter lever 10 is in contact with the shield 3S through a roller 12 which is rolled by rotational movement of the lifter lever 10.

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat having a rotary operation lever attached to a seat frame and an adjacent member provided in contact with the operation lever in the axial direction.

  2. Description of the Related Art Conventionally, in a vehicle seat, a rotary operation lever is provided on a side portion of a seat cushion (Patent Document 1). The operation lever has a configuration in which a rear portion thereof is connected to a side portion of the seat cushion, and the front portion is operated to be lifted with the rear portion serving as a fulcrum to release the fixed state of the backrest angle of the seat back. Yes. The operation lever is formed with a protrusion that protrudes in the axial direction toward the side portion of the seat cushion, and the protrusion is applied to the side portion of the seat cushion. It is said that the sticking is suppressed.

JP 2012-143338 A

  However, in the above prior art, since the protrusion of the operation lever is provided in a state of slight contact with the side portion of the seat cushion in order to suppress rattling, the operation load of the operation lever becomes heavy due to the frictional resistance. The lever may not return to its original position due to the bias. The present invention was devised as a solution to the above-described problems, and the problem to be solved by the present invention is to suppress the play of the operation lever in the axial direction without increasing the operation load. It is to be provided in a state.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
A first invention is a vehicle seat having a rotary operation lever attached to a seat frame and an adjacent member provided in an axial contact with the operation lever. The contact structure between the operation lever and the adjacent member is constituted by a rolling element that rolls by rotating the operation lever.

  According to the first aspect of the present invention, the operation lever is provided in a state in which the operation lever is in contact with the adjacent member in the axial direction, so that the backlash in the axial direction during normal operation or rotation operation of the operation lever can be suppressed. Further, when the operation lever is rotated, even if it is in contact with the adjacent member due to the rolling of the rolling element interposed between the operation lever, the operation load becomes heavy or the operation becomes difficult to return. Without any problems, it can be operated smoothly with light force. In this way, the operation lever can be provided in a state in which the backlash in the axial direction is suppressed without increasing the operation load.

  The second invention is the following configuration in the first invention described above. The rolling element is provided on the operation lever and rolls on the adjacent member.

  According to the second aspect of the invention, since the rolling element is not exposed to the outside even when the operation lever is rotated, the rolling element can be set without impairing the appearance.

  The third invention is the following configuration in the second invention described above. The rolling element is configured as a roller provided in a grip portion on the distal end side that is gripped when the operation lever is operated. The adjacent member is configured as a resin shield that is located inside the operation lever and covers the seat frame from the outside. The roller is configured to roll on the outer surface of the shield.

  According to the third aspect of the present invention, since the rolling element is a roller, the contact area with the counterpart member is larger than the ball, so that the shield and the resin shield covering the seat frame from the outside can be damaged. A rolling element can be set between the control lever.

1 is a perspective view illustrating a schematic configuration of a vehicle seat of Example 1. FIG. It is a side view of a lifter lever. It is the side view which looked at the lifter lever from the inside. It is the IV-IV sectional view taken on the line of FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the seat 1 (vehicle seat) according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the seat 1 according to the present embodiment is configured as a passenger seat of an automobile, and includes a seat back 2 that serves as a backrest for a seated occupant and a seat cushion 3 that serves as a seating portion. It has become. The seat 1 adjusts the backrest angle of the seat back 2 and the seating height of the seat cushion 3 by operating the reclining lever 4A and the lifter lever 10 provided on the side of the seat cushion 3 outside the vehicle, respectively. It can be configured. Here, the lifter lever 10 corresponds to the “operation lever” of the present invention.

  Specifically, the seat back 2 is connected to the rear end portions of both the left and right sides of the seat cushion 3 via the recliner 4 that functions as a rotation shaft device that can be rotated and stopped, respectively. It becomes the composition. Each recliner 4 is normally held in a locked state in which the backrest angle of the seat back 2 is fixed, and the locked state is released all at once by the operation of lifting the reclining lever 4A described above. Thus, the backrest angle of the seat back 2 can be switched to a state in which the seat back 2 can be adjusted in the front-rear direction.

  On the other hand, the seat cushion 3 is connected to a vehicle floor via a seat lifter 5 including a pair of left and right four-bar linkage mechanisms (not shown). Although the illustration of the seat lifter 5 is not shown in the drawings, the seat cushion 3 is fixed at a seating height by the braking force of a brake-equipped drive unit interposed between the rear link on the outside of the vehicle and the lifter lever 10. In the locked state.

  When the lifter lever 10 is lifted or pushed down from the initial neutral position, the driving force of the seat lifter 5 is transmitted to the rear link outside the vehicle via the drive unit with brake (not shown). The links are operated so that the links move together, and the seating height position of the seat cushion 3 is adjusted.

  By the way, the above-mentioned reclining lever 4A is integrally connected to an operation shaft (not shown) inserted through the central portion of the recliner 4 outside the vehicle, and the initial position shown in FIG. It is designed to be lifted and returned from the state. Specifically, the reclining lever 4A is formed so as to extend forward from the connecting portion with the operation shaft (not shown) described above, and is normally used as the inner skeleton 3F of the seat cushion 3 (the “seat frame of the present invention”). 1), and is held by being pushed down to the initial position shown in FIG. 1 by an urging force of a tension spring (not shown) hooked between them.

  Then, the reclining lever 4A is operated so that the resin gripping portion 4Aa serving as a handle attached to the tip end portion extending to the front side is gripped and lifted by the operator. The recliner 4 is unlocked all at once by being operated so as to be pulled up around an operation shaft (not shown) on the rear end side. And the reclining lever 4A is returned to the state of the initial position before the operation by urging by releasing the operation state in which the grip portion 4Aa is lifted, and the recliner 4 is returned to the locked state. To be held. The grip portion 4Aa of the reclining lever 4A described above is in a state of being disposed at a side position closer to the back of the seat cushion 3 next to the seat occupant's hip.

  On the other hand, the lifter lever 10 is composed of a single resin-molded part. As shown in FIG. 2, the lifter lever 10 has a brake (not shown) in the vicinity of the position immediately below the grip portion 4Aa of the reclining lever 4A. It is connected to the drive shaft 5A of the drive unit and is assembled in a state where it is rotatably supported. The lifter lever 10 extends from the connecting portion with the drive shaft 5A described above to the front side through the lower side of the grip portion 4Aa of the reclining lever 4A and extends to the front side from the grip portion 4Aa. In this configuration, a grip portion 11 serving as a handle is formed. The lifter lever 10 has a configuration in which the grip portion 11 is formed at a position extending long forward from the drive shaft 5A serving as a rotation center, so that the operator can move the grip portion 11 from the initial neutral position. The operation of pulling up and pushing down can be performed with a light force.

  The reclining lever 4 </ b> A and the lifter lever 10 described above are in a state in which their gripping portions 4 </ b> Aa and 11 are provided so as to be exposed to the outside of the resin shield 3 </ b> S that covers the side portion of the seat cushion 3 outside the vehicle. Specifically, the shield 3S described above is provided in a state in which the lower region of the side portion outside the vehicle of the seat cushion 3 and the connecting portion region between the seat cushion 3 and the seat back 2 via the recliner 4 are widely covered from the outside. In other words, the various portions are integrally connected to the inner skeleton 3 </ b> F of the seat cushion 3.

  The reclining lever 4A is in a state of being covered from the outside by the shield 3S described above from the root side end portion connected to the operation shaft (not shown) of the recliner 4 outside the vehicle described above. However, from the middle region, the grip portion 4Aa that is attached to the end portion that is passed through the slit 3S1 formed in the shield 3S and extends forward is exposed to the outside of the shield 3S. The state is provided in the state. Further, the lifter lever 10 is provided in a state where it is entirely exposed to the outside of the shield 3S, and the end on the base side, which is the center of rotation, passes from the window portion opened in the shield 3S to the inside of the shield 3S. Thus, the drive shaft 5A of the drive unit with brake (not shown) that is exposed in the same portion is integrally connected to the drive shaft 5A.

  The basic structure of the reclining lever 4A and the lifter lever 10 described above is the same as the known structure disclosed in the literature such as JP2009-166808A. A specific description of the connection structure and the like will be omitted.

  As described above, the lifter lever 10 described above is in a state in which the end portion on the base side is integrally coupled to the drive shaft 5A so as not to be rattled. Since it is in the free end state, there is a risk of rattling such as hitting the adjacent shield 3S due to the action of vibration or the like input when the vehicle travels. Therefore, in the present embodiment, in order to suppress the occurrence of the above-described rattling, the tip of the lifter lever 10 is provided in advance so as to be in a state of being slightly in contact with the adjacent shield 3S.

  However, if the tip of the lifter lever 10 touches the shield 3S as described above, the lifter lever 10 is strong between the lifter lever 10 and the shield 3S when the lifter lever 10 is raised or lowered or returned from the operated position. A frictional force due to the sliding resistance is generated, and there is a risk that the operation load of the lifter lever 10 becomes heavier or the operation cannot be returned. Such an adverse effect is particularly noticeable in an operation lever having a long length like the lifter lever 10. Therefore, in the present embodiment, a resin roller 12 that rolls on the outer side surface of the shield 3S to the inner side surface portion of the grip portion 11 on the distal end side that contacts the shield 3S of the lifter lever 10 as the lifter lever 10 rotates. Is attached.

  As shown in FIGS. 3 to 4, the roller 12 is set in a concave portion 11 </ b> A formed on a side surface portion inside the grip portion 11 of the lifter lever 10, and protrudes in both axial directions from the center portion. The rotating shaft 12A formed in this manner is fitted into the shaft hole 11A1 formed in communication with the recess 11A from the inside so that the shaft can rotate on the side surface portion inside the lifter lever 10. It is in a state of being connected.

  The rotating shaft 12A is formed by integral molding of the roller 12 and the resin, and each of the rotating shafts 12A is formed so as to protrude from the side surface in each shaft hole 11A1 by being pushed into each shaft hole 11A1 from the inside. The protrusions 11A2 are elastically crushed while jumping over the protrusions 11A2 to be pushed into the shaft holes 11A1 and supported by the restored deformed protrusions 11A2 so as not to fall off the shaft holes 11A1. As a state, each shaft hole 11 </ b> A <b> 1 is mounted in a state where the shaft can rotate. As a result of the mounting, the roller 12 is provided in a state in which a part of the roller 12 is assembled from the side surface portion inside the lifter lever 10 and the protruding portion is pressed against the outer surface of the shield 3S. It is in a state.

  Thus, in this embodiment, the contact structure between the lifter lever 10 and the shield 3 </ b> S is constituted by the roller 12 that rolls with the rotational movement of the lifter lever 10. With such a configuration, when the lifter lever 10 is raised or lowered or returned from the operated position, even if it is in contact with the shield 3S, the operation load becomes heavy or the operation cannot be returned. Without having to move smoothly.

  As described above, the seat 1 according to the present embodiment is provided in a state in which the rotary lifter lever 10 (operation lever) attached to the inner skeleton 3F (seat frame) of the seat cushion 3 is in contact with the lifter lever 10 in the axial direction. The shield 3S (adjacent member) is provided. The contact structure of the lifter lever 10 with respect to the shield 3 </ b> S is constituted by a roller 12 (rolling member) that rolls by the rotational movement of the lifter lever 10.

  By providing the lifter lever 10 in a state in which the lifter lever 10 is in contact with the shield 3S in the axial direction as described above, it is possible to suppress the backlash in the axial direction when the lifter lever 10 is in a normal state or during a rotating operation. In addition, when the lifter lever 10 is rotated, even if the roller 12 interposed between the lifter lever 10 and the shield 3S is in contact with the shield 3S, the operation load becomes heavy or the operation is hardly returned. Without any problems, it can be operated smoothly with light force. Thus, the lifter lever 10 can be provided in a state in which the backlash in the axial direction is suppressed without increasing the operating load.

  The roller 12 is provided on the lifter lever 10 and is configured to roll on the shield 3S. With such a configuration, the roller 12 is not exposed to the outside even when the lifter lever 10 is rotated, so that the roller 12 can be set without impairing the appearance.

  In addition, since the rolling element provided on the lifter lever 10 is a roller 12, the contact area is increased compared to a member having a small contact area with a counterpart member such as a ball. A rolling element can be set between the shield 3S and the lifter lever 10 without damaging the covering resin shield 3S.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the “vehicle seat” of the present invention can be applied to seats other than the driver's seat of an automobile, and is used for vehicles other than automobiles such as railways, and other vehicles such as airplanes and ships. It can be widely applied to sheets.

  The configuration of the present invention is a configuration of a “vehicle seat having a rotary operation lever attached to a seat frame and an adjacent member provided in contact with the operation lever in the axial direction”. For example, the present invention can be widely applied to an operation lever provided on a seat back. Further, the operation lever is not limited to the lifter lever shown in the above-described embodiment, and various rotary operation levers such as a reclining lever, a walk-in lever, and a tilt-down lever can be applied.

  Further, the rolling elements are not limited to rollers, and may be other rolling elements such as a ball that rolls by a rotational movement of an operation lever or a belt conveyor. Moreover, the rolling element may be provided in the adjacent member. Further, the adjacent member is not limited to the resin shield, and any member may be used as long as it is provided in contact with the operation lever in the axial direction. Further, the rolling element may have a configuration in which a rubber roller is formed through an iron shaft.

1 seat (vehicle seat)
2 Seat back 3 Seat cushion 3F Internal framework (seat frame)
3S Shield 3S1 Slit 4 Recliner 4A Reclining lever 4Aa Grasping part 5 Sheet lifter 5A Drive shaft 10 Lifter lever (control lever)
11 Grasping part 11A Recess 11A1 Shaft hole 11A2 Protrusion 12 Roller 12A Rotating shaft

Claims (3)

A vehicle seat having a rotary operation lever attached to a seat frame, and an adjacent member provided in contact with the operation lever in the axial direction,
The vehicle seat, wherein the contact structure between the operation lever and the adjacent member is constituted by a rolling element that rolls by the rotational movement of the operation lever. The vehicle seat according to claim 1,
The vehicle seat, wherein the rolling element is provided on the operation lever and rolls on the adjacent member. The vehicle seat according to claim 2,
The rolling element is configured as a roller provided in a grip portion on a distal end side that is gripped when operating the operation lever, and the adjacent member is located inside the operation lever and covers the seat frame from the outside. A vehicle seat configured as a shield, wherein the roller rolls on an outer surface of the shield.

Images