JP-7857239-B2 - Operating levers and vehicle seats

Inventors

• 迫田 享大
• 齋藤 幸信

Assignees

• 日本発條株式会社

Dates

Publication Date

20260512

Application Date

20230126

Claims (5)

1. An operating lever for rotating the operating shaft of a seat adjustment mechanism provided in a vehicle seat, A stopper is mounted integrally with the operating shaft so as to be rotatable, and whose range of rotation is limited by engaging with the frame of the vehicle seat, and which has an elastically deformable locking claw. A lever body is attached to the stopper, has a locking hole into which the locking claw is inserted, and is locked to the stopper by the locking claw catching on the edge of the locking hole, A cap attached to the lever body, which maintains the engaged state by limiting the elastic deformation of the locking claw, A control lever is provided.
2. The stopper has a plurality of locking claws arranged in the circumferential direction of the operating shaft, The lever body has a plurality of locking holes into which the plurality of locking claws are inserted, The operating lever according to claim 1 , wherein the cap has ribs that limit the elastic deformation of the plurality of locking claws.
3. The operating lever according to claim 1 or 2, wherein the lever body is made of a resin with lower bending strength than the resin constituting the stopper.
4. The operating lever according to claim 3, wherein the lever body is made of a fiber-reinforced resin with a lower fiber content than the fiber-reinforced resin constituting the stopper.
5. A seat has a seat adjustment mechanism and a seat body in which the vehicle's occupants sit, An operating lever according to claim 1 or claim 2, wherein the stopper is attached to the operating shaft of the seat adjustment mechanism, A vehicle seat equipped with [a specific feature/feature].

Description

This invention relates to a vehicle seat, and more particularly to an operating lever for rotating the operating shaft of a seat adjustment mechanism. The vehicle seat disclosed in Patent Document 1 below includes an operating rotating member for operating a reclining mechanism and a reclining lever that operates the reclining mechanism by applying a rotational force connected to the operating rotating member. The operating rotating member is integrally composed of a switching shaft and an arm portion. The reclining lever has a gripping portion and a connecting portion for transmitting rotational force to the operating rotating member. The connecting portion has a fitting portion that engages with the switching shaft from the axial direction and an output surface portion that contacts the arm portion opposite to the direction of rotation of the arm portion. This prevents the rotational force from concentrating in the connection between the rotational lever and the operating rotating member. Japanese Patent Publication No. 2015-209077 This is a perspective view showing a vehicle seat according to an embodiment.This is a perspective view showing a part of a vehicle seat according to an embodiment.This is a cross-sectional view showing the cross-section along the line F3-F3 in Figure 2.This is a cross-sectional view showing the cross-section along the line F4-F4 in Figure 2.This is a perspective view showing the configuration of the operating lever and surrounding area of a vehicle seat according to an embodiment.This is a perspective view showing the configuration shown in Figure 5 from a different direction than that shown in Figure 5.This is a perspective view showing the stopper on the operating lever as seen from the front side.This is a rear view of the stopper.This is a perspective view showing the lever body of the operating lever as seen from the front side.This is a perspective view showing the lever body from the rear.This is a perspective view showing the cap on the operating lever as seen from the front.This is a perspective view showing the cap from the back. The following describes a vehicle seat 10 according to one embodiment of the present invention, with reference to Figures 1 to 12. Note that some reference numerals may be omitted in the figures for clarity. The arrows FR, LH, and UP, as indicated in the figures, indicate the front, left, and top of the vehicle seat 10, respectively. Hereafter, when simply using the directions front, back, left, right, up, and down, unless otherwise specified, these directions refer to the direction relative to the vehicle seat 10. As shown in Figure 1, the vehicle seat 10 according to this embodiment is, for example, the driver's seat of a so-called right-hand drive vehicle, and comprises a seat body 12 in which the occupant sits, and a reclining lever 50 which is an operating lever. The seat body 12 comprises a seat cushion 14 that supports the occupant's buttocks and thighs, a seat back 16 that supports the occupant's back, a headrest 18 that supports the occupant's head, a slide mechanism 36 for adjusting the front-to-back position of the seat body 12 relative to the vehicle, a lifter mechanism 38 for adjusting the up-to-down position of the seat body 12 relative to the vehicle, and a reclining mechanism 40 for adjusting the reclining angle of the seat back 16 relative to the seat cushion 14. The reclining mechanism 40 corresponds to the "seat adjustment mechanism" in this invention. As shown in Figure 2, the cushion frame 20 that constitutes the skeleton of the seat cushion 14 comprises a pair of left and right side frames 22, a front frame 24 connecting the front ends of the left and right side frames 22 in the left-right direction, a rear frame 26 connecting the rear ends of the left and right side frames 22 in the left-right direction, and a pair of left and right B brackets 28 (the left B bracket 28 is not shown) fixed to the rear ends of the left and right side frames 22. The back frame 30 that constitutes the skeleton of the seat back 16 comprises a pair of left and right side frames 32 (the left side frame 32 is not shown), a lower frame 34 connecting the lower ends of the left and right side frames 32 in the left-right direction, and an upper frame (not shown) connecting the upper ends of the left and right side frames 32 in the left-right direction. As shown in Figures 2 to 4, the lower end of the right side frame 32 is positioned to the left (inward in the seat width direction) relative to the right B bracket 28. Between the lower end of the right side frame 32 and the right B bracket 28, the recliner 42, which constitutes the main part of the reclining mechanism 40, is positioned. Although not shown in the figures, a recliner 42 is also positioned between the left B bracket 28 and the left side frame 32. The left and right recliners 42 are connected in the left-right direction by a reclining rod 48, which is the operating shaft. A reclining l