JP7147665B2 - vehicle seat - Google Patents

Description

The present invention includes a shaft-shaped rotating member and an operating lever that serves as a handle for rotating the rotating member about its axis, and the operating lever is detachably attached to the rotating member via a retaining member. relating to a vehicle seat.

This type of vehicle seat is often provided with a shaft-like rotating member, and by rotating this rotating member, the posture, position, etc. of the seat cushion and seat back can be changed. For example, the posture of the seatback with respect to the seat cushion is locked by a recliner. A rotating member for unlocking is inserted into the recliner, and an operating lever serving as a handle is attached to the rotating member. By rotating the rotating member around the axis using the operating lever as a handle to unlock the recliner, the seat back can be tilted with respect to the seat cushion.

Here, it is desirable that the above-described operating lever is detachably attached to the rotating member in consideration of maintenance, part replacement, and the like. For example, the vehicle seat disclosed in Patent Document 1 has a link mechanism for changing the height position of the seat cushion, an operating shaft corresponding to the rotating member of the present invention, and an operating lever. The operating shaft is a shaft-like member inserted through the side portion of the seat cushion in the seat width direction, and the end portion of the operating shaft inside the seat is gear-connected to a link mechanism. By rotating the operating shaft around the axis to move the link mechanism, the height position of the seat cushion can be changed. An operating lever serving as a handle is arranged on the end portion side of the operating shaft outside the seat, and the operating shaft is covered from the outside of the seat by this operating lever. The operation lever has a circular plate-shaped lever base screwed to the back side thereof, and the lever base is detachably attached to the operation shaft. That is, in the known technique, an operating shaft is inserted into the center hole of the lever base, and a ring-shaped retaining ring is fitted to the tip of the operating shaft protruding from the lever base to prevent it from coming off. When removing the operating lever from the operating shaft, the operating lever is removed from the lever base to expose the retaining ring to the outside. By removing the retaining ring with a jig or the like in this state, the lever base can be removed from the operating shaft.

JP 2005-209158 A

By the way, in the known technology, the retaining ring (retaining member) fitted to the tip of the operating shaft (rotating member) is covered with the operating lever, so that it cannot be removed directly from the outside. Therefore, in the known technique, it is necessary to detach the operation lever from the lever base before detaching the retaining ring, resulting in a structure inferior in performance such as detachability. SUMMARY OF THE INVENTION The present invention has been devised in view of the above points, and an object of the present invention is to attach an operating lever to a rotating member in a detachable manner with good performance.

As means for solving the above problems, a vehicle seat according to a first aspect of the invention includes a shaft-like rotating member and an operating lever that serves as a handle for rotating the rotating member about its axis. This operating lever has a main body portion that covers the rotating member from the outside of the seat, a mounting portion that is provided on the back side of the main body portion, and a retaining member that is mounted on the mounting portion. The rotating member is inserted into the mounting portion and detachably attached to the mounting portion by being retained by the retaining member. In this type of configuration, it is desirable to attach the operating lever to the rotating member in a detachable manner with good performance (for example, to ensure excellent detachability).

The retaining member of the present invention has a pressing portion protruding outside the attachment portion, and is configured to be detached from the attachment portion by pressing the pressing portion. Therefore, the operating lever is provided with a communicating portion that communicates the inside and outside of the main body portion, and a guide portion that extends from the communicating portion toward the pressing portion. In the present invention, when the operation lever is removed, for example, a jig capable of pressing the pressing portion can be inserted through the communicating portion and guided to the pressing portion of the rotating member through the guide portion. As described above, in the present invention, in a state in which the main body of the operating lever is attached to the rotating member, the retaining member can be removed directly from the rotating member, thereby ensuring excellent detachability of the operating lever. It has become.

A vehicle seat according to a second invention is the vehicle seat according to the first invention, wherein the operation lever is arranged on the side surface of the seat in the width direction of the seat, and rotates vertically from the initial position to rotate the rotating member around the axis. It is designed to rotate. With the operating lever in the initial position as a reference, the communicating portion is provided below the operating lever. In the present invention, since the communicating portion is provided on the lower side of the operating lever, which is relatively inconspicuous with respect to the initial position, the configuration contributes to ensuring excellent design of the operating lever.

A vehicle seat according to a third aspect of the invention is the vehicle seat according to the second aspect of the invention, wherein the body portion is a plate-like member having a hat cross-sectional shape, and the outer plate portion covers the rotating member from the outside of the seat. and a peripheral plate portion that bends toward the side surface of the seat, and the communicating portion is provided in the peripheral plate portion positioned below the operation lever. In the present invention, the communicating portion is provided on the peripheral plate portion on the lower side of the operating lever, which is less conspicuous with respect to the initial position.

A vehicle seat according to a fourth invention is the vehicle seat according to either the second invention or the third invention, wherein a part of the side shield provided on the side surface of the seat is adjacent to the lower side of the operation lever in the initial position. In addition, the side shields are provided with exposed portions for exposing the communicating portions in the initial position to the lower side of the seat. In the present invention, the performance of the vehicle seat can be improved by the side shields, and furthermore, by exposing the communicating portion from the exposed portion of the side shield, it becomes possible to remove the retaining member directly from the rotating member. ing.

A vehicle seat according to a fifth aspect of the invention is the vehicle seat according to any one of the first to fourth aspects of the invention, wherein the plate-shaped guide portion has a guide surface extending from the communicating portion toward the pressing portion. . In the present invention, for example, by moving a jig capable of pressing the pressing portion along the guide surface of the guide portion, the jig can be smoothly guided toward the pressing portion.

A vehicle seat according to a sixth aspect of the invention is the vehicle seat according to any one of the first to fifth aspects of the invention, wherein the communicating portion has a generally polygonal opening. The guide portion extends from one side of the opening of the communicating portion toward the pressing portion, and from the other side of the opening of the communicating portion that is not opposed to the first guide portion, and extends toward the pressing portion. and a second guide portion. In the present invention, the jig inserted into the communicating portion can be guided to the pressing portion along at least one of the first guide portion and the second guide portion. At this time, by providing the first guide part and the second guide part at non-opposing positions, it is possible to correspond to jigs of various shapes, and it is a configuration that further contributes to ensuring excellent detachability of the operation lever. .

A vehicle seat according to a seventh invention is the vehicle seat according to any one of the first to sixth inventions, wherein a pair of groove-like insertion grooves are provided facing each other on the peripheral wall of the cylindrical mounting portion. . The retaining member is an Ω-shaped member fitted to the peripheral wall of the mounting portion, and has a pair of free ends that are widened at the distal end after being tightened in a direction toward each other. The tightened portions of the pair of free ends are engaged with the rotary member inside the mounting portion while being inserted into the insertion groove portion, and the distal end of one free end portion extends outward from the mounting portion from the insertion groove portion. It protrudes to form a pressing portion, and is movable in a direction away from the other free end portion by being pressed. In the present invention, the rotating member is prevented from coming off by fitting the Ω-shaped retaining member to the cylindrical mounting portion. A pressing portion is formed at the end of the free end portion of the retaining member, and this pressing portion is arranged to protrude outward from the mounting portion. By pressing the pressing portion to separate one free end from the other free end, the retaining member can be smoothly removed from the mounting portion while expanding the pair of free ends.

A vehicle seat according to an eighth aspect of the invention is the vehicle seat according to the seventh aspect of the invention, wherein the retaining member is fitted to the fitting portion of the peripheral wall of the mounting portion with the pressing portion facing the communicating portion. is provided with a blocking portion that prevents the retaining member from being fitted to a peripheral wall portion different from the fitting portion. In the present invention, since the blocking portion is provided on the main body portion of the operating lever, the retaining member can be securely fitted to the mounting portion at a proper position.

According to the first aspect of the present invention, the operating lever can be detachably attached to the rotating member with good performance. Moreover, according to the second invention, the design of the operating lever can be maintained as much as possible. Further, according to the third invention, it is possible to more reliably maintain the design of the operating lever. Further, according to the fourth invention, the operating lever can be detachably attached to the rotary member with good performance while the seat performance is improved by the side shields. Further, according to the fifth invention, the operating lever can be attached to the rotating member in a detachable manner more reliably with good performance. Further, according to the sixth aspect, the operating lever can be attached to the rotating member in a detachable manner with better performance. According to the seventh invention, the retaining member having an appropriate shape allows the operating lever to be detachably attached to the rotating member with good performance. Further, according to the eighth invention, the retaining member can be more securely attached to the proper position of the attachment portion of the operating lever.

1 is a perspective view of a vehicle seat; FIG. 1 is a cross-sectional view of a vehicle seat showing a recliner; FIG. 1 is an exploded perspective view of a portion of a vehicle seat; FIG. It is a back view of an operating lever. It is a downward perspective view of a part of operation lever. FIG. 4 is an enlarged rear view of the operating lever showing the mounting portion; FIG. 4 is an enlarged rear view of the operating lever showing the retaining member and the mounting portion; It is a front view of a retaining member. It is a perspective view of a side shield. It is a back view of a side shield. It is a downward perspective view of a part of operation lever and a part of side shield. FIG. 11 is a back view of the operation lever during the work of removing the retainer member using a jig; FIG. 13 is an enlarged rear view of the operating lever during the removal work, showing the next state of FIG. 12; FIG. 14 is an enlarged rear view of the operating lever during the removal work, showing the next state of FIG. 13; FIG. 15 is an enlarged rear view of the operating lever during the removal work, showing the next state of FIG. 14; FIG. 16 is an enlarged rear view of the operating lever during the removal work, showing the next state of FIG. 15; FIG. 17 is an enlarged rear view of the operating lever during the removal work, showing the next state of FIG. 16;

Embodiments for carrying out the present invention will be described below with reference to FIGS. 1 to 17. FIG. For the sake of convenience, arrows indicating the front-back direction, the left-right direction, and the up-down direction of the vehicle seat are appropriately illustrated in each drawing. The vehicle seat 2 of FIG. 1 has a seat cushion 4 , a seat back 6 and a headrest 8 . These seat constituent members (4, 6, 8) respectively cover the seat frames (4F, 6F, 8F) forming the seat framework, the seat pads (4P, 6P, 8P) forming the contour of the seat, and the seat pads. It has a seat cover (4S, 6S, 8S). The lower portion of the seat back 6 is connected to the rear portion of the seat cushion 4 (details will be described later) via a recliner RM (details will be described later) so that it can be raised and lowered. A headrest 8 is arranged above the seat back 6 in the upright state.

[Recliner]
Here, the recliner RM shown in FIGS. 1 and 2 is a member that regulates the upright motion of the seat back 6 with respect to the seat cushion 4, and a rotary member 10, which will be described later, is inserted therein. As shown in FIG. 2, the recliner RM is arranged to connect the lower portion of the seat frame 6F of the seat back 6 and the upper rear portion of the seat frame 4F (side frame 4Fa) of the seat cushion 4. As shown in FIG. The recliner RM is constructed by assembling a ratchet 2r and a guide 4r, and has various related constructions (slide cam 6r, pole 7r, hinge cam 8r, spiral spring 10r, outer ring 12r, etc.). The ratchet 2r is a disk-shaped member fixed to the seat back 6 side, and the guide 4r is a disk-shaped member fixed to the seat cushion 4 side. The ratchet 2r and the guide 4r are brought into an unlocked state in which they can rotate relative to each other by rotating the rotating member 10, which will be described later, to move the related components. Also, the ratchet 2r and the guide 4r return to the locked state in which rotation is stopped when the rotary member 10 rotates in the reverse direction due to the force of the spiral spring 10r. Between the seat back 6 and the seat cushion 4, a spiral spring-like biasing member TM is attached to constantly bias the seat back 6 toward the front side of the seat.

[Rotating member]
The rotating member 10 shown in FIG. 2 is a shaft-shaped member facing in the left-right direction, and is inserted substantially in the center of the recliner RM so as to be rotatable about its axis A. As shown in FIG. The outer end portion 12, which is the outer end portion of the rotating member 10, is a columnar portion having a diameter larger than that of the other rotating member portions, and is located outside the seat cushion 4 (right side in FIG. 2). ). A distal end portion 12E of the outer end portion 12 has a tapered peripheral surface that is tightened in the radial direction. The outer end portion 12 of the rotating member 10 is formed with a locking groove portion 14 at a portion to be inserted into a mounting portion 30 which will be described later. The locking groove portion 14 is a groove-shaped concave portion formed on the entire peripheral surface of the rotating member 10, and can lock a part (42x, 43x) of the retainer member 40, which will be described later. Further, the outer end portion 12 of the rotating member 10 is provided with a plurality of anti-rotation protrusions 16 in a portion from the locking groove portion 14 to the terminal portion 12E. The plurality of anti-rotation protrusions 16 are protrusions that protrude from the outer surface of the outer end portion 12 and linearly extend rightward from the locking groove portion 14 . As shown in FIG. 6, each anti-rotation protrusion 16 is provided around the outer surface of the rotating member 10 at appropriate intervals, and is capable of coming into contact with a locking projection 32 of a mounting portion 30, which will be described later. placed in position.

[Seat cushion]
The seat cushion 4 shown in FIG. 1 is a substantially rectangular member that serves as a seat portion when viewed from above, and has the above-described basic structures 4F, 4P, and 4S, an operation lever 20, and side shields 70 (each The details of the parts will be described later). A side surface of the seat cushion 4 in the seat width direction is covered with a side shield 70, and an operation lever 20 is provided on the rear side of the seat cushion 4 (right side surface in FIG. 1). The operating lever 20 is a member that serves as a handle when rotating the rotating member 10 described above, and is attached to the outer end portion 12 of the rotating member 10 as shown in FIG. This operating lever 20 is detachably attached to the rotating member 10 in consideration of maintenance, part replacement, etc., and this kind of operating lever 20 is excellent in various performances such as detachability. is desired. Therefore, in the present embodiment, the operating lever 20 is detachably attached to the rotating member 10 with good performance by means of the structure (communication portion, guide portion) to be described later. Each configuration will be described in detail below.

[Basic configuration]
Here, referring to FIG. 1, the seat cover 4S is a surface material forming the design surface of the seat, and is made of cloth (woven fabric, knitted fabric, non-woven fabric) or leather (natural leather, synthetic leather) made of natural fibers or synthetic fibers. etc. The seat pad 4P (not shown) is a substantially rectangular member that forms the contour of the seat when viewed from above, and is made of foamed resin such as polyurethane foam (density: 10 kg/m ³ to 60 kg/m ³ ). The seat frame 4F shown in FIG. 2 is a generally rectangular metal frame when viewed from above, and its left and right side skeletons are formed by plate-shaped side frames 4Fa (in FIG. only the frame is shown). A front frame (not shown) forming a front skeleton is fixed to the front end side of each side frame 4Fa, and a rear frame (not shown) forming a rear skeleton is stretched over the rear side of each side frame 4Fa. is fixed. The rear portion of each side frame 4Fa bulges upward in the shape of a mountain, and the above-described recliner RM and rotating member 10 are fixed thereto. Each side frame 4Fa is provided with locking holes (not shown) at appropriate intervals in the front-rear direction. can be locked.

[Operation lever]
The operating lever 20 shown in FIGS. 1 to 3 has a body portion 22 having an outer shape, a mounting portion 30 provided on the back side of the body portion 22, and a retaining member 40 fitted to the mounting portion 30. ing. Here, the main body portion 22 is a plate-like solid resin plate-like portion having appropriate rigidity, and includes a rear portion 24 located behind the seat cushion 4 and a rear portion 24 which is positioned to the rear of the seat cushion 4. It is formed with a front portion 28 projecting forward. The rear portion 24 is generally circular in side view, and can cover the rotary member 10 from the outside of the seat (right side in each drawing). The front portion 28 is a bar-shaped portion that protrudes from the rear portion 24 and has external dimensions that can be gripped by the passenger. The body portion 22 of the operating lever 20 is arranged at an initial position in which the front side portion 28 faces forward in a substantially horizontal state when the operating lever 20 is disposed on the seat cushion 4 . By pulling up while holding the front part 28, the rear part 24 can be rotated around the axis A together with the rotating member 10 as described later.

Since the rear side portion 24 and the front side portion 28 have generally the same basic configuration except for their different outer shapes, the details of the rear side portion 24 at the initial position will be described below as an example. The rear portion 24 shown in FIGS. 3 to 5 has a hat cross-sectional shape when viewed in longitudinal section, and includes a common structure (the outer plate portion 24a and the peripheral plate portion 24b), a pedestal portion 25, and a blocking portion 26, which will be described later. It has a communication portion 50 and guide portions (61A, 61B, 62). Here, the outer plate portion 24a is a circular vertical plate portion facing in the vertical direction, and can cover the rotating member 10 from the outside of the seat as described later. The peripheral plate portion 24b is a portion bent leftward, which is the inner side of the seat, from the peripheral edge of the outer plate portion 24a, and is formed along substantially the entire edge of the outer plate portion 24a. At the initial position, the peripheral plate portion 24b can be divided into an upper peripheral plate portion 241b facing upward and a lower peripheral plate portion 242b facing downward.

4 and 5, a pedestal portion 25 on which a mounting portion 30, which will be described later, can be arranged is provided substantially at the center of the rear surface of the outer plate portion 24a. The pedestal portion 25 is a cubic portion that protrudes from the back side of the outer plate portion 24a, and is provided with an insertion hole 25H and a blocking portion 26. As shown in FIG. The insertion hole 25H is a hole provided substantially at the center of the pedestal 25, and a mounting portion 30, which will be described later, is inserted therein. The blocking portion 26 is a rectangular plate-like portion that stands up from the left end surface of the pedestal portion 25, and is arranged below the mounting portion 30 that is inserted into the insertion hole 25H. Vertical plate-shaped rib structures 27a to 27c are provided on the back surface of the outer plate portion 24a, and the rigidity of the outer plate portion 24a is ensured by the rib structures 27a to 27c (in each figure, a portion of the outer plate portion 24a is Corresponding symbols are attached only to the rib structure). For example, in the outer plate portion 24a of the rear portion 24, a plurality of first rib structures 27a are radially provided around the base portion 25, and each first rib structure 27a is formed in a circular shape around the base portion 25. is integrated with the second rib structure 27b. Furthermore, a honeycomb-shaped third rib structure 27c is provided on the front side of the second rib structure 27b, and the portion between the front side portion 28 and the rear side portion 24 is reinforced by the third rib structure 27c.

[Mounting part]
A mounting portion 30 shown in FIG. 5 is a portion into which the outer end portion 12 of the rotating member 10 is inserted and connected, and is also a portion to which a retaining member 40 described later is fitted. The mounting portion 30 is formed of a cylindrical member having a mounting hole 30H at its center, and is inserted into the insertion hole 25H of the base portion 25 so as to stand leftward. 5 to 7, the mounting portion 30 has a plurality of locking projections 32, a pair of insertion groove portions (front insertion groove portion 34 and rear insertion groove portion 35), and a fitting portion 36. ing. As shown in FIG. 6, the plurality of locking protrusions 32 are convex portions that protrude from the inner wall of the mounting hole 30H and linearly extend rightward from the left end of the mounting hole 30H. These locking projections 32 are portions that prevent relative rotation of the rotating member 10 with respect to the mounting portion 30, and are arranged on the inner wall of the mounting hole 30H so as to be alternate with the detent projections 16 of the rotating member 10. As shown in FIG. That is, even if the rotating member 10 attempts to rotate relative to the mounting portion 30 around the axis A, the relative rotation of the rotating member 10 is prevented by the abutment of the anti-rotation protrusion 16 and the locking projection 32. .

[Insertion groove part, fitting part]
A pair of insertion groove portions (front insertion groove portion 34 and rear insertion groove portion 35) shown in FIGS. 5 to 7 are groove portions that pass through the peripheral wall of the mounting portion 30 in the thickness direction and communicate with the mounting hole 30H. The pair of insertion grooves 34 and 35 are provided facing each other in the front-rear direction so that a part of the retaining member 40 described later is inserted therethrough. That is, the front insertion groove portion 34 is provided on the front side of the peripheral wall of the mounting portion 30 and extends vertically, and its lower edge 34a and upper edge 34b are formed in the shape of an upright wall facing in the vertical direction. The rear insertion groove portion 35 is provided on the rear side of the peripheral wall of the mounting portion 30 and extends vertically. The fitting portion 36 is a portion to which a retainer member 40 (to be described later) is fitted. That is, the fitting portion 36 is formed by a pair of insertion grooves 34 and 35 and an upper peripheral wall portion 37 of the mounting portion 30 provided between the insertion grooves 34 and 35 .

[Retaining member, pressing part]
Here, the retaining member 40 shown in FIGS. 5, 7, and 8 is a snap-ring-shaped metal member that can be fitted to the peripheral wall of the mounting portion 30, and has a pressing portion 44 that receives pressing from a jig 80, which will be described later. is doing. As shown in FIG. 8, the retaining member 40 is formed in a substantially Ω shape, and in the fitting state described later, an arcuate intermediate portion 41 disposed on the upper side and a pair of front and rear free end portions (front free end portions). It has an end 42 and a rear free end 43). The pair of front and rear free end portions 42 and 43 are connected in series to corresponding ends of the intermediate portion 41, and are tightened in a direction toward each other and then widened at the distal end side. That is, the rear free end portion 43 is an arcuate portion connected to the rear lower end of the intermediate portion 41 and gradually curves forward as it goes downward. A tightened portion (43x) that is tightened most forward is formed on the lower end side of the rear free end portion 43. As shown in FIG. The distal end of the rear free end portion 43 is bent rearward and then bent back into a ring shape, and this ring-shaped distal end portion forms a pressing portion 44 . The front free end portion 42 is an arc-shaped portion that is connected to the front lower end of the intermediate portion 41 and has a front-rear symmetrical shape with the rear free end portion 43 . That is, the front free end portion 42 is gradually curved rearward as it goes downward, and the lower end side of the front free end portion 42 is formed with a tightened portion (42x) that is tightened most rearward. A distal end 45 of the front free end portion 42 is bent forward and then bent back to form a ring shape. In this embodiment, the pressing portion 44 at the end of the rear free end portion 43 can be moved away from the front free end portion 42 by being pressed from below as will be described later.

[Fitting work of retaining member]
In the present embodiment, referring to FIGS. 5 and 7, the retaining member 40 is fitted to the fitting portion 36 of the mounting portion 30, and the pressing portion 44 is arranged to protrude rearward from the mounting portion 30. As shown in FIG. At this time, the pedestal portion 25 into which the mounting portion 30 is inserted is provided with a blocking portion 26 that stands up below the mounting portion 30 . For this reason, in this embodiment, even if an attempt is made to fit the retaining member 40 to the lower side of the mounting portion 30, the blocking portion 26 is an obstacle and the fitting is substantially impossible. Therefore, the retaining member 40 can be securely fitted to the fitting portion 36 of the mounting portion 30, and a situation in which the retaining member 40 is erroneously fitted to a peripheral wall portion different from the fitting portion 36 can be avoided as much as possible. . Then, referring to FIG. 7 , when fitting the retaining member 40 , the free ends 42 and 43 are spread forward and backward and moved downward along the fitting portion 36 . The tightening portions 42x (43x) of the free ends 42 and 43 are inserted into the corresponding insertion grooves 34 (35) and protrude into the mounting holes 30H, where they can be locked to the locking grooves 14 of the rotary member 10. will be placed in Further, a pressing portion 44 at the end of the rear free end portion 43 is arranged to protrude rearward from the mounting portion 30 while being in close proximity to or in contact with the lower edge 35 a of the rear insertion groove portion 35 . A distal end 45 of the front free end portion 42 is also arranged to protrude forward of the mounting portion 30 while being in close proximity to or in contact with the lower edge 34 a of the front insertion groove portion 34 .

[Communication part]
The communicating portion 50 shown in FIGS. 4 and 5 is a portion that communicates the inside and outside of the main body portion 22, and has an opening dimension that allows insertion of a jig 80 described later. The communicating portion 50 is a notch-shaped portion provided at the edge of the lower peripheral plate portion 242b positioned substantially directly below the mounting portion 30, and is formed by connecting the downward outer surface of the lower peripheral plate portion 242b to the upper side. is in communication with the inner surface facing the 5, the communicating portion 50 has a substantially rectangular opening shape, and is surrounded by a front side portion 51, a rear side portion 52, and a right side portion 53. As shown in FIG. The front side portion 51 is an edge portion formed on the front side with respect to the initial position, and the rear side portion 52 is an edge portion formed on the rear side facing the front side portion 51 . The right side portion 53 is an edge portion formed on the right side, and is arranged at a position orthogonal to the front side portion 51 and the right side portion 53 (non-opposing position). In the present invention, the front side portion 51 (or the rear side portion 52) corresponds to one side of the opening of the communicating portion of the present invention, and the right side portion 53 is a communicating portion not facing the one side of the present invention. corresponds to the other side of the opening of the part.

[Guide part, first guide part]
The guide portions (61A, 61B, 62) shown in FIGS. 4 and 5 are portions extending from the communication portion 50 toward the pressing portion 44 of the retaining member 40. can guide you. The guide part of this embodiment has a pair of front and rear first guide parts (front first guide part 61A, rear first guide part 61B) and a second guide part 62 . Each of these guide parts 61A, 61B, 62 is a standing wall-like part that rises from the back surface of the outer plate part 24a of the rear part 24, and is formed integrally with the main body part 22 by a method such as integral molding. The front first guide portion 61A is a standing wall-like portion extending from the front side portion 51 of the communicating portion 50 toward the pressing portion 44, and gradually slopes rearward as it goes upward. The height dimension (horizontal dimension) of the front first guide portion 61A with respect to the outer plate portion 24a substantially matches the height dimension L1 of the lower peripheral plate portion 242b with respect to the outer plate portion 24a. 4 and 5, the front first guide portion 61A can be formed on an imaginary straight line VL that connects the front side portion 51 and the rear end of the attachment portion 30. As shown in FIG. For example, the front first guide portion 61A of this embodiment is formed on the imaginary straight line VL starting from the front side portion 51 of the communicating portion 50, and the upper edge serving as the end point of the front first guide portion 61A is located on the pedestal portion 25. and is arranged in front of the mounting portion 30 . The rear surface of the front first guide portion 61A is a front guide surface 61a, and the front guide surface 61a is a flat surface continuously formed toward the pressing portion 44. As shown in FIG.

The rear first guide portion 61B is a standing wall portion extending from the rear side portion 52 of the communicating portion 50 toward the pressing portion 44, and is inclined parallel to the front first guide portion 61A. ing. The height dimension of the rear first guide portion 61B also substantially matches the height dimension L1 of the lower peripheral plate portion 242b. The rear first guide portion 61B of the present embodiment extends parallel to the front first guide portion 61A starting from the rear side portion 52 of the communicating portion 50, and the upper edge serving as the end point of the rear first guide portion 61B. extends to the rear end position of the mounting portion 30 while avoiding the pedestal portion 25 . The front surface of the rear first guide portion 61B is a rear guide surface 61b. It is formed almost continuously.

[Second guide part]
The second guide portion 62 is a standing wall-like portion extending from the right side portion 53 of the communicating portion 50 toward the pressing portion 44 . The second guide portion 62 is disposed at an intermediate position between the first guide portions 61A and 61B in the front-rear direction, and is arranged in parallel with the first guide portions 61A and 61B. Inclined. The height dimension of the second guide portion 62 with respect to the outer plate portion 24a substantially matches the height dimension L2 of the right side portion 53 of the lower peripheral edge portion so as not to protrude into the communication portion 50 . The second guide portion 62 extends in parallel with the first guide portions 61A and 61B from the intermediate position of the right side portion 53 of the communicating portion 50, and the upper edge serving as the end point of the second guide portion 62 is the pedestal portion. 25, it is connected to a connecting vertical plate portion 63 bridging the front and rear first guide portions 61A and 61B. A left end surface of the second guide portion 62 is a left guide surface 62 a , and the left first guide surface is a flat surface continuously formed toward the pressing portion 44 .

[Side shield]
The side shield 70 shown in FIGS. 2, 3 and 9 is a member that covers the side surface of the side frame 4Fa of the seat cushion 4, and has a pair of upper and lower exposed portions 76 and 78, which will be described later. The side shield 70 is formed in a rectangular shape elongated in the front-rear direction following the side surface of the side frame 4Fa. is doing. The side shield 70 has a hat cross-sectional shape in a vertical cross-sectional view, and the peripheral edge thereof is bent toward the inside of the seat. A plurality of locking claws 71 shown in FIG. 3 protrude from the rear side of the side shield 70 at appropriate intervals in the front-rear direction, and each locking claw 71 engages with a corresponding locking hole in the side frame 4Fa. It is a part that can be stopped.

Further, referring to FIG. 9, the raised rear portion of the side shield 70 is provided with an arrangement recess 72 in which the operation lever 20 is arranged, and a through window portion 72H through which the rotating member 10 can be inserted. The arrangement recess 72 is a portion in which the rear outer surface of the side shield 70 is recessed relatively toward the left side, and the operation lever 20 in the initial position can be arranged. A circular penetrating window portion 72H is provided in the center of the recessed portion 72 so as to follow the rear portion 24 of the operating lever 20. 20 is covered. A stepped outer surface portion 73 projecting rightward and a lower outer surface portion 74 extending downward from the lower end of the stepped outer surface portion 73 are provided below the recessed portion 72 . The stepped outer surface portion 73 is a portion arranged adjacent to the operating lever 20 in the initial position from below, and corresponds to a part of the side shield provided on the side surface of the seat of the present invention. The rightward projection dimension L3 of the lower outer surface portion 74 is set so as not to protrude from the operation lever 20 arranged in the arrangement recess 72 . For example, by arranging the lower outer surface portion 74 so as to be substantially flush with the outer plate portion 24a of the operation lever 20 in the vertical direction, the appearance of the seat can be improved.

[Exposed part]
3, 10 and 11, the pair of upper and lower exposed portions (upper exposed portion 76 and lower exposed portion 78) are portions for exposing the communication portion 50 at the initial position to the lower side of the seat. , the passage of a jig 80, which will be described later, can be permitted. As shown in FIG. 11, the upper exposed portion 76 is a through hole vertically penetrating the stepped outer surface portion 73 of the side shield 70, and is surrounded by a roof plate portion 77 having a U-shaped cross section. 10 and 11, the lower exposed portion 78 is an opening provided at the rear lower end of the side shield 70. In this embodiment, the lower exposed portion 78 is cut out from the peripheral portion of the rear lower end of the side shield 70. It is formed by

[Installation of side shields and operation levers]
2, 3 and 9, after the side shield 70 is arranged on the side surface of the side frame 4Fa, the operating lever 20 is arranged on the rear upper side of the side shield 70 (arrangement recess 72). At this time, the side shields 70 are positioned and fixed with respect to the side frame 4Fa by successively locking the locking claws 71 shown in FIG. 3 in the corresponding locking holes. By arranging the side shields 70 on the seat cushion 4 in this way, it is possible to ensure excellent seat rigidity and design. Then, as shown in FIG. 2, the outer end portion 12 of the rotating member 10 is arranged in a protruded state in the through window portion 72H of the arrangement recess portion 72 .

Next, referring to FIGS. 2 and 9, while the operation lever 20 in the initial state is applied to the installation recess 72 of the side shield 70, the outer end portion 12 of the rotary member 10 is inserted into the mounting hole 30H of the mounting portion 30 on the back side. is inserted. At this time, referring to FIG. 2, the outer end portion 12 of the rotating member 10 is inserted into the mounting hole 30H while pushing aside the retaining member 40 fitted to the mounting portion 30 by the tapered peripheral surface of the terminal portion 12E. being inserted. When the locking groove 14 provided in the outer end 12 of the rotating member 10 reaches the retaining member 40, the tightening portions 42x (43x) of the free ends 42 and 43 of the retaining member 40 are engaged as shown in FIG. It is inserted into the stop groove portion 14 and locked. The operation lever 20 is attached to the outer end portion 12 of the rotating member 10 because the rotating member 10 inserted into the mounting portion 30 is locked by the retaining member 40 so as to be retained.

Thus, the operating lever 20 in the initial position is arranged on the seat cushion 4 as shown in FIG. By pulling up the front portion 28 of the operating lever 20 and rotating (rotating) the rear portion 24 together with the rotary member 10 around the axis A, the lock of the recliner RM can be released. Since the operating lever 20 is biased in the reverse rotation direction together with the rotating member 10, stopping the pulling up of the front portion 28 causes the operating lever 20 to naturally rotate in the reverse direction and return to the initial position. In this embodiment, in the operation lever 20 at the initial position shown in FIGS. 1 and 11, the communicating portion 50 is provided at the lower peripheral plate portion 242b of the operation lever 20, which is not easily visible. By avoiding exposure of the communicating portion 50 to the outside as much as possible in this manner, the configuration contributes to securing excellent design of the operating lever 20 . Furthermore, in this embodiment, the stepped outer surface portion 73 of the side shield 70 is arranged adjacent to the lower side of the operating lever 20 at the initial position, so that the communication portion 50 can be more reliably prevented from being exposed to the outside.

[Removing operation lever]
In the present embodiment, the operating lever 20 is detachably attached to the rotary member 10 via the retaining member 40 in consideration of maintenance, parts replacement, and the like. That is, the operation lever 20 can be removed from the rotating member 10 by removing the retaining member 40 from the mounting portion 30 of the operation lever 20 . In this type of seat structure, it is necessary to ensure that the operation lever 20 can be easily removed, so as to avoid taking time to remove the retainer member 40 as much as possible.

Therefore, as shown in FIGS. 5 and 7, the retainer member 40 of this embodiment has a pressing portion 44 protruding outside the mounting portion 30, and is released from the mounting portion 30 by pressing the pressing portion 44. It is configured. As shown in FIG. 5, the operating lever 20 has a communicating portion 50 communicating between the inside and outside of the body portion 22, and guide portions (61A, 61B, 62) extending from the communicating portion 50 toward the pressing portion 44. is provided. Therefore, in this embodiment, even when the body portion 22 of the operating lever 20 is attached to the rotating member 10, the retaining member 40 can be removed directly from the rotating member 10 by the above-described configuration. That is, when the operation lever 20 is removed, a jig 80, which will be described later, can be inserted from the communicating portion 50 and guided to the pressing portion 44 of the rotating member 10 through the guide portions (61A, 61B, 62). . Therefore, a specific method for removing the retaining member 40 using the jig 80 will be described below.

A jig 80 shown in FIGS. 11 and 12 is a rectangular prism-shaped member having an appropriate length, and can be inserted into the communicating portion 50 of the operating lever 20 through the exposed portions 76 and 78 of the side shield 70. be. Therefore, the jig 80 is inserted into the communicating portion 50 from the lower side of the side shield 70 through the exposed portions 76 and 78 and pressed against the pressing portion 44 of the retaining member 40 . The operating lever 20 has a pair of front and rear first guide portions 61A and 61B extending from the front and rear side portions 51 and 52 of the communicating portion 50 to the pressing portion 44, and extending from the right side portion 53 to the pressing portion 44. It has a second guide portion 62 . Therefore, the jig 80 inserted into the communicating portion 50 can be guided to the pressing portion 44 along at least one of the first guide portions 61A, 61B and the second guide portion 62. As shown in FIG. For example, when a prismatic jig 80 is used, the front and rear surfaces of the jig 80 can be brought into contact with the corresponding guide surfaces 61a (61b) of the first guide portions 61A (61B). Also, the right surface of the jig 80 can be brought into contact with the left guide surface 62 a of the second guide portion 62 . Corresponding guide surfaces (61a, 61b, 62a) of the respective guide portions (61A, 61B, 62) are flat surfaces provided substantially continuously toward the pressing portion 44. As shown in FIG. Therefore, by moving the jig 80 along one of the guide surfaces (61a, 61b, 62a), it can be smoothly guided toward the pressing portion 44. As shown in FIG.

[Removing the retaining member]
Then, referring to FIGS. 12 and 13, the jig 80 is brought into contact with the pressing portion 44 projecting rearward from the mounting portion 30 and then pushed upward together with the pressing portion 44 . At this time, the retaining member 40 rotates counterclockwise around the axis A of the rotary member 10 by pressing from the jig 80 . 13, the distal end 45 of the front free end portion 42 abuts against the lower edge 34a (upper corner) of the front insertion groove portion 34 due to the rotation of the retainer member 40, thereby preventing rotation. When the jig 80 is further pushed up in this state, only the pressing portion 44 at the end of the rear free end 43 moves upward and rearward because the distal end 45 of the front free end 42 is prevented from rotating. After reaching the upper edge 35b (lower corner) of the rear insertion groove 35 as shown in FIG. , and is gradually separated from the front free end portion 42 . Further, the pressing portion 44 climbs over the upper edge 35b (upper corner) of the rear insertion groove portion 35 as shown in FIG. It moves along the upper peripheral wall portion 37 of , and is disengaged from the mounting portion 30 . In this way, in this embodiment, by pressing the pressing portion 44 to separate the rear free end portion 43 from the front free end portion 42, the retaining member 40 expands the pair of free end portions 42, 43 side. It can be removed smoothly from the mounting portion 30 .

As described above, in the present embodiment, when the operation lever 20 is removed, for example, the jig 80 capable of pressing the pressing portion 44 is inserted from the communicating portion 50 and the rotary member is moved through the guide portions (61A, 61B, 62). It can lead to ten pressure points 44 . As described above, in this embodiment, in a state where the body portion 22 of the operating lever 20 is attached to the rotating member 10, the retaining member 40 can be removed directly from the rotating member 10. It has a configuration that contributes to ensuring detachability. In addition, in this embodiment, the communicating portion 50 is provided on the lower side of the operation lever 20, which is relatively inconspicuous with respect to the initial position. . In particular, in this embodiment, the communicating portion 50 is provided on the peripheral plate portion (242b) on the lower side of the operating lever 20, which is less conspicuous. . In addition, in this embodiment, the performance of the vehicle seat 2 can be improved by the side shields 70. Further, by exposing the communicating portion 50 from the exposed portions 76 and 78 of the side shields 70, It is possible to remove the retaining member 40 directly. Further, in the present embodiment, for example, a jig 80 capable of pressing the pressing portion 44 is moved along the corresponding guide surfaces (61a, 61b, 62a) of the guide portions (61A, 61B, 62), so that the pressing portion is moved. 44 can be guided more smoothly. Further, in this embodiment, the jig 80 inserted into the communicating portion 50 can be guided to the pressing portion 44 along at least one of the first guide portions (61A, 61B) and the second guide portion 62. FIG. At this time, by providing the first guide portions (61A, 61B) and the second guide portion 62 at non-opposing positions, it is possible to correspond to jigs 80 of various shapes, ensuring excellent detachability of the operation lever 20. It is a configuration that further contributes to In this embodiment, the rotation member 10 is prevented from coming off by fitting an Ω-shaped retaining member 40 to the cylindrical mounting portion 30 . A pressing portion 44 is formed at the end of the free end portion of the retaining member 40 , and this pressing portion 44 is arranged to protrude outward from the mounting portion 30 . By pressing the pressing part 44 to separate one free end (43) from the other free end (42), the retaining member 40 spreads the pair of free end sides (42, 43). It can be smoothly removed from the mounting portion 30 while being pushed. In this embodiment, by providing the blocking portion 26 on the main body portion 22 of the operating lever 20, the retaining member 40 can be securely fitted to the mounting portion 30 at a proper position. Therefore, according to this embodiment, the operating lever 20 can be attached to the rotating member 10 in a detachable manner with good performance.

The vehicle seat 2 of this embodiment is not limited to the embodiment described above, and can take various other embodiments. In this embodiment, the configuration (shape, size, formation position, number of formations, etc.) of the communicating portion 50 and the guide portions (61A, 61B, 62) is illustrated, but the configuration of each of these portions is not intended to be limited. For example, the communication portion can be formed in at least one of the outer plate portion and the peripheral plate portion arranged at an appropriate position of the operation lever in the initial position according to the position of the pressing portion, etc., but it is relatively inconspicuous. It is desirable to form at least one of the outer plate portion and the peripheral plate portion disposed on the side. In addition, the communication part can be formed as a notch or as a through hole, and the shape of the opening can also take various shapes such as a polygonal shape and a circular shape. Further, the guide part can have at least one of the first guide part and the second guide part, and it is also possible to form only one of the front side first guide part and the rear side guide part as the first guide part. be. Further, the guide part can be attached to the main body part by a method such as adhesion or fastening, and can be formed in a U-shaped cross section or a cylindrical shape following the outer shape of the communication part. It should be noted that each guide part can be formed in a rod shape instead of a plate shape. For example, a plurality of rod-shaped guide parts that stand up from the outer plate part are arranged in parallel from the communication part toward the pressing part. can also

Also, in the present embodiment, the configuration (shape, size, arrangement position, configuration part, etc.) of the operating lever 20 is illustrated, but the configuration of the operating lever is not intended to be limited. For example, the mounting portion can have various shapes into which the rotating member can be inserted and the retaining member can be fitted. Also, the configuration of the retaining member can be changed as appropriate, and various shapes that can be removed from the mounting portion by pressing the pressing portion can be used.

Further, in the present embodiment, the procedure for removing the retainer member 40 and the configuration of the jig 80 have been exemplified, but the procedure and the jig can be appropriately changed as necessary. For example, if the side shield is not adjacent to the operating lever, the jig can be inserted directly into the communicating portion of the operating lever. At this time, the operating lever shown in FIG. 1 can be pulled upward to expose the communicating portion to the front side, and the jig can be inserted into the communicating portion in this state. As jigs, in addition to prismatic or cylindrical columnar members and plate members, it is also possible to use L-shaped, T-shaped, thorn-shaped, and hook-shaped rod-shaped members. Instead of using a jig, it is also conceivable that the operator directly presses the pressed portion.

In this embodiment, the seat cushion 4 has been described as an example, but the configuration of this embodiment can be applied to various seat components such as seat backs, armrests, and headrests as long as they have rotating members and operating levers. As the rotating member, a rotating member inserted into various mechanisms can be assumed in addition to the recliner. The configurations of the operating levers, side shields, etc. can be appropriately changed according to the seat constituent members to be applied. The configuration of the vehicle seat can also be changed as appropriate, and the configuration of the present embodiment can be applied to general vehicle seats such as vehicles, aircraft, trains, and ships.

2 Vehicle seat 4 Seat cushion 6 Seat back 8 Headrest 4S Seat cover 4P of seat cushion Seat pad 4F of seat cushion Seat frame 4Fa of seat cushion Side frame 6F Seat frame of seat back 10 Rotating member A Axis of rotating member 12 Rotating member outer end portion 12E terminal portion 14 locking groove portion 16 anti-rotation convex portion 20 operating lever 22 body portion 24 rear portion 24a outer plate portion 24b peripheral plate portion 241b upper peripheral plate portion 242b lower peripheral plate portion 25 pedestal portion 25H insertion Installation hole 26 Blocking portion 27a First rib structure 27b Second rib structure 27c Third rib structure 28 Front side portion 30 Mounting portion 30H Mounting hole 32 Locking projection 34 Front insertion groove portion 34a Lower edge 34b of the front insertion groove portion Above the front insertion groove portion Edge 35 Rear insertion groove portion 35a Lower edge 35b of rear insertion groove portion Upper edge 36 of rear insertion groove portion Fitting portion 37 Upper peripheral wall portion 40 Retaining member 41 Intermediate portion 42 Front free end portion 42x Tightening portion of the front free end portion 43 Rear free end portion 43x Tightened portion 44 of rear free end portion Pressing portion 45 End 50 of front free end portion Communicating portion 51 Front side portion (one side of the opening of the communicating portion of the present invention)
52 rear side part (one side of the opening of the communicating part of the present invention)
53 right side part (the other side of the opening of the communicating part that is not opposed to the one side of the present invention)
61A Front side first guide portion 61a Front side guide surface 61B Rear side first guide portion 61b Rear side guide surface 62 Second guide portion 62a Left side guide surface 70 Side shield 71 Locking claw 72 Arrangement concave portion 72H Penetration window portion 73 Step outer surface portion (A part of the side shield arranged on the side of the seat of the present invention)
74 Lower outer surface portion 76 Upper exposed portion 77 Roof plate portion 78 Lower exposed portion 80 Jig RM Recliner 2r Ratchet 4r Guide 6r Slide cam 7r Pole 8r Hinge cam 10r Spiral spring 12r Peripheral ring TM Biasing member VL Virtual straight line

Claims (8)

A shaft-shaped rotating member and an operation lever that serves as a handle for rotating the rotating member around the axis,
The operating lever has a main body portion covering the rotary member from the outside of the seat, a mounting portion provided on the back side of the main body portion, and a retainer member mounted on the mounting portion. A vehicle seat that is inserted into a mounting portion and detachably attached to the mounting portion by being retained by the retaining member,
The retaining member has a pressing portion protruding outside the mounting portion, and is configured to be removed from the mounting portion by pressing the pressing portion,
A vehicle seat, wherein the operating lever is provided with a communicating portion that communicates the inside and outside of the main body portion, and a guide portion that extends from the communicating portion toward the pressing portion. The operation lever is arranged on the side surface of the seat in the width direction of the seat, and is configured to rotate the rotating member around the axis by rotating in the vertical direction from the initial position,
2. The vehicle seat according to claim 1, wherein the communicating portion is provided below the operating lever with respect to the operating lever in the initial position. The body portion is a plate-shaped member having a hat cross-sectional shape, and has an outer plate portion that covers the rotating member from the outside of the seat, and a peripheral plate portion that bends from the outer plate portion toward the side surface of the seat,
3. The vehicle seat according to claim 2, wherein the communication portion is provided in the peripheral plate portion positioned below the operating lever. A part of the side shield provided on the side surface of the seat is arranged adjacent to the lower side of the operation lever at the initial position, and the side shield has the communication portion at the initial position connected to the seat. 4. The vehicle seat according to claim 2 or 3, further comprising an exposed portion exposed on the lower side. The vehicle seat according to any one of claims 1 to 4, wherein the plate-shaped guide portion has a guide surface extending from the communicating portion toward the pressing portion. The communication portion has a generally polygonal opening, and the guide portion is provided at a position not facing the first guide portion extending from one side of the opening of the communication portion toward the pressing portion and the one side. 6. The vehicle seat according to any one of claims 1 to 5, further comprising a second guide portion extending from the other side of the opening of the communicating portion at the second guide portion toward the pressing portion. A pair of groove-shaped insertion grooves are provided facing each other on the peripheral wall of the cylindrical mounting portion,
The retaining member is an Ω-shaped member fitted to the peripheral wall of the mounting portion, and has a pair of free ends that are widened at the distal end after being tightened in a direction toward each other. the tightened portion of the free end of is engaged with the rotating member in the mounting portion while being inserted into the insertion groove;
The distal end of one free end protrudes from the insertion groove to the outside of the mounting portion to form the pressing portion, and is movable in a direction away from the other free end by being pressed. A vehicle seat according to any one of claims 1-6. The retaining member is fitted to a fitting portion of the peripheral wall of the mounting portion with the pressing portion facing the communicating portion, and the body portion is provided with the retaining member that is different from the fitting portion. 8. A vehicle seat according to claim 7, further comprising a blocking portion that prevents the seat from being fitted to different peripheral wall portions.

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