KR102071492B1 - Seat recliner for vehicle - Google Patents

Abstract

A plurality of guide parts spaced apart from each other and having a guide space formed between the guide parts; A plurality of lock gears having a lower surface portion seated in each of the guide spaces of the first flange, sliding forward and backward in a radial direction along the guide portion, an outer tooth formed at an outer end thereof, and having guide protrusions formed on the upper surface thereof; A lock cam seated on a central portion of the first flange, the lock gear is advanced by pressing a plurality of lock gears during rotation, and a lock cam having a fixing protrusion at an upper surface thereof; It is seated on the upper surface of the lock cam and the lock gear, the fastening portion is formed in the center, the bottom of the lock projection is inserted into the lock cam is formed with a fixed groove fixed to the lock cam, the guide protrusion of the rock gear is inserted into the guide slit control part; A second flange coupled to the first flange so as to be relatively rotatable with the first flange, the second flange being shaped to cover the guide part, the lock gear, and the control part and meshing with the outer tooth of the lock gear; And an input member inserted at the center rear of the first flange and having an end coupled with the control part, and having an end portion formed with a fixed portion coupled with the fastening portion of the control part. The control part includes a through hole formed at the center of the second flange. The seat recliner of the vehicle is introduced to protrude upward from the center portion so as to extend inside, and the fastening portion protrudes upward from the outside of the input member.

Description

Vehicle seat recliner {SEAT RECLINER FOR VEHICLE}

The present invention is a seat recliner of a vehicle for assembling a lock gear and a lock cam by using only existing control parts and input members without adding a separate mechanism for assembling the control part and the lock gear and the lock cam. It is about.

A recliner is provided between the seat cushion and the seat back of the vehicle to release the lock so as to be reclined as necessary, and perform the lock to maintain the angle after the reclining.

The recliner is generally fixed to the first flange, the second flange is a relative rotation, there is a lock gear is provided inside the lock gear is engaged with the second flange, the lock is released, the second flange is released Relative rotation on the first flange allows the seatback to reclining based on the seat cushion.

In the existing recliner, an input member inserted from the first flange side is fixed at the second flange side to assemble the lock cam, the lock gear, the control part, and the like between the first flange and the second flange and maintain the assembly position. Needed a separate fixed ring structure.

However, the addition of the fixing ring for such assembly had a problem of weight and cost increase due to the increase in the number of parts, and the parts tolerance was accumulated as the parts were increased, resulting in an increase in the overall tolerance on the product.

The matters described as the background art are only for the purpose of improving the understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the related art already known to those skilled in the art.

KR 10-1725412 B1

The present invention has been proposed to solve this problem, and the assembly of the lock gear and the lock cam by only the existing control parts and input members without the need to add a separate mechanism for the assembly of the control part and the lock gear and the lock cam. It is an object of the present invention to provide a seat recliner of a vehicle to enable it.

According to an aspect of the present invention, a seat recliner includes: a first flange having a plurality of guide parts spaced apart from each other and having guide spaces formed therebetween; A plurality of lock gears having a lower surface portion seated in each of the guide spaces of the first flange, sliding forward and backward in a radial direction along the guide portion, an outer tooth formed at an outer end thereof, and having guide protrusions formed on the upper surface thereof; A lock cam seated on a central portion of the first flange, the lock gear is advanced by pressing a plurality of lock gears during rotation, and a lock cam having a fixing protrusion at an upper surface thereof; It is seated on the upper surface of the lock cam and the lock gear, the fastening part is formed in the center, the bottom of the lock projection is inserted into the lock cam is fixed to the lock cam is formed and the guide projection of the rock gear is inserted into the guide slit formed guide part; A second flange coupled to the first flange so as to be relatively rotatable with the first flange, the second flange being shaped to cover the guide part, the lock gear, and the control part and meshing with the outer tooth of the lock gear; And an input member inserted at a central rear of the first flange, the end of which is fastened to the control part, and an end member having a fixed part fastened to the fastening part of the control part.

The control part and input member can be molded from plastic resin.

The lock cam is positioned at the center of the first flange, and the plurality of lock gears are disposed on the outer side of the lock cam along the circumference of the lock cam, so that the guide protrusions of the lock gear may be located outward from the fixing protrusion of the lock cam.

The control part is formed with a fitting hole in the center portion, the fastening portion is formed on the inner circumferential surface of the fitting hole, the fixing groove and the guide slit may be formed to the outside of the fitting hole.

The fixing groove is formed at the edge of the fitting hole, the guide slit may be formed at a point biased outward from the fixing groove.

The fastening part protrudes along the inner circumferential surface of the fitting hole, and the fixing part of the input member protrudes along the outer circumferential surface of the input member end so that the fastening part and the fastening part can be locked.

The fastening part has a tapered shape so that the upper end thereof is retracted inward, and the lower end thereof may be connected to the inner circumferential surface of the fitting hole.

The outer diameter of the fixing part of the input member is formed to be larger than the inner diameter of the fastening part, so that the fixing part is fitted to the fastening part and penetrates the fastening part, thereby preventing the hook part from being separated in the opposite direction.

The fixing groove may have an inner diameter equal to the outer diameter of the fixing protrusion, and the guide slit may have a slit shape extending in a predetermined length with a width equal to the diameter of the guide protrusion.

The fixing protrusions are formed in a position symmetrical with respect to the center of the lock cam, and constituted in pairs. The fixing grooves are each formed at positions symmetrical with respect to the center of the control part. Can be fitted vertically.

The input member is inserted at the rear of the center of the first flange so that the fixing part passes through the lock cam and is fastened with the fastening part of the control part so that the installation position of the lock cam and the lock gear can be fixed between the control part and the first flange.

According to the seat recliner of the vehicle of the present invention, it is possible to assemble the lock gear and the lock cam only by the existing control part and the input member without adding a separate mechanism for assembling the control part, the lock gear and the lock cam. can do.

1 is an exploded perspective view of a seat recliner of a vehicle according to an embodiment of the present invention.
2 to 3 is another exploded perspective view of a seat recliner of a vehicle according to an embodiment of the present invention.
4 to 5 are cross-sectional views of the seat recliner of the vehicle shown in FIG.

1 is an exploded perspective view of a seat recliner of a vehicle according to an embodiment of the present invention, Figures 2 to 3 is another exploded perspective view of a seat recliner of a vehicle according to an embodiment of the present invention, Figures 4 to 5 Is a cross-sectional view of the seat recliner of the vehicle shown in FIG.

A seat recliner of a vehicle according to the present invention may include: a first flange 100 having a plurality of guide parts 120 spaced apart from each other, and having guide spaces 140 formed between the guide parts 120; A lower surface portion is seated on each guide space 140 of the first flange 100, and slides back and forth in the radial direction along the guide portion 120, and an outer tooth 240 is formed at an outer end thereof, and a guide protrusion 220 on an upper surface portion thereof. A plurality of rock gears 200 are formed; The lower portion is seated on the central portion of the first flange 100, the lock cam 200 is advanced by pressing the plurality of lock gear 200 during rotation, the lock cam 300 is formed with a fixing projection 320 on the upper surface ; It is seated on the upper surface of the lock cam 300 and the lock gear 200, the fastening portion 420 is formed in the center, the fixing protrusion 320 of the lock cam 300 is inserted into the lower surface is fixed to the lock cam 300 A control part 400 in which a groove 460 is formed and a guide slit 440 is formed through which the guide protrusion 220 of the lock gear 200 is inserted; It is coupled to the first flange 100 so as to be relatively rotatable with the first flange 100, and covers the guide unit 120, the lock gear 200, and the control part 400, and the outer tooth of the lock gear 200. A second flange 500 engaged with the 240; And an input member having a fixing part 720 which is inserted at the rear of the center of the first flange 100 so that an end thereof is fastened to the control part 400 and an end thereof is fastened to the fastening part 420 of the control part 400. 700);

The plurality of guide parts 120 are formed to be spaced apart from each other in a protruding shape in the first flange 100, and the guide spaces 140 are formed between the guide parts 120. Lock gears 200 are disposed in the guide space 140, respectively. The lock gear 200 has a lower surface portion mounted on each guide space 140 of the first flange 100, and slides back and forth in the radial direction along the guide portion 120. An outer tooth 240 is formed at an outer end of the lock gear 200, and an inner tooth 520 is formed on an inner circumferential surface of the second flange 500 as illustrated in FIG. 3. Accordingly, when the lock gear 200 is slid forward in the guide space 140, the outer tooth 240 at the end of the lock gear 200 meshes with the inner tooth 520 of the second flange 500, and thereby the first flange The relative rotation of the 100 and the second flange 500 is locked. Since the spring 780 mounted on the outside provides the rotational force in the direction in which the lock gear 200 always moves forward, the seatback and the seat cushion can maintain the angle.

On the other hand, the lock gear 200 has a guide protrusion 220 is formed on the upper surface. The lock gear 200 is hung on the control part 400 through the guide protrusion 220, and the lock gear 200 is slid back to the rear through the guide protrusion 220 when the control part 400 is rotated. The engagement with the second flange 500 is released. In this case, the seatback and the seat cushion are in a state where the relative angle can be adjusted.

The bottom surface of the lock cam 300 is seated on the central portion of the first flange 100. The lock cam 300 presses the plurality of lock gears 200 during rotation to allow the lock gears 200 to move forward. And the fixing projection 320 is formed on the upper surface portion of the lock cam 300. The fixing protrusion 320 of the rock cam 300 is also coupled to the control part 400, while the guide protrusion 220 of the rock gear 200 is configured to be guided by the control part 400, while the fixing protrusion of the rock cam 300 is fixed. 320 is the position is fixed to the control part 400 is fastened. Therefore, the control part 400 and the lock cam 300 will always rotate together.

In detail, the control part 400 is seated in a shape covering all of the upper surfaces of the lock cam 300 and the lock gear 200, and a fastening part 420 is formed at the center portion. Then, the lower surface of the lock protrusion 300 is inserted into the fixing protrusion 320 is fixed to the lock cam 300 is formed with a fixing groove 460, the guide protrusion 220 of the lock gear 200 is inserted into the guide slit guide 440 is formed. The second flange 500 is coupled to the first flange 100 so as to be relatively rotatable with the first flange 100, and covers the guide part 120, the lock gear 200, and the control part 400. It meshes with the outer tooth 240 of the lock gear 200.

The input member 700 is inserted from the rear of the center of the first flange 100 so that the end is fastened to the control part 400, and the fixing part 720 is fastened to the fastening part 420 of the control part 400. Is formed. That is, in the case of the present invention, the input member 700 is finally inserted through the first flange 100 from the rear, in which case the input member 700 penetrated is immediately connected to the control part 400. In this state, the second flange 500 is covered and the retainer 600 is coupled to terminate the overall assembly. Therefore, such elements as the conventional fixing ring are unnecessary and the number of parts can be reduced.

In detail, the control part 400 and the input member 700 may be molded of a plastic resin material. That is, the other components are formed of a steel material for strength, but the input member 700 and the control part 400 are molded of a resin material so that both the fixing groove 460 and the guide slit 440 in the control part 400 are formed. Easily molded, it is possible to perform the fastening of the input member 700 and the control part 400 by using the elastic deformation without the fixing ring.

On the other hand, the lock cam 300 is located in the center of the first flange 100, the lock gear 200 is disposed a plurality of spaced apart along the periphery of the lock cam 300 on the outside of the lock cam 300, the lock gear 200 Guide protrusions 220) of the lock cam 300 may be offset to the outside than the fixing protrusions 320 of the lock cam (300). In addition, the fixing groove 460 is formed at the edge of the fitting hole 430, the guide slit 440 may be formed at a point biased outward than the fixing groove 460.

4 is a cross section taken along the line A-A of FIG. 2 and FIG. 5 is a cross section taken along the line B-B of FIG. In FIG. 4, the guide protrusion 220 of the lock gear 200 may be fitted to the guide slit 440 of the control part 400 from the outside, and in FIG. 5, the fixing protrusion of the lock cam 300 may be further positioned on the inside. It can be seen that 320 is inserted into the fixing groove 460 of the control part 400.

The lock cam 300 can not only be located inside the lock gear 200, so that both the fixing of the lock cam 300 and the fastening of the lock gear 200 can be implemented in the control part 400, as shown in FIG. 3. 400, a fixing groove 460 to be inserted into the fixing protrusion 320 of the lock cam 300 at a substantially inner point should be formed. However, if the control part 400 is made of steel as in the prior art, the fixing groove 460 should be formed by a method such as half-piercing. In this case, the layout of the control part 400 is accompanied by a part projecting together with the groove. There are many phase constraints and the thickness of the product becomes thick. Therefore, the control part 400 is manufactured by injection molding to secure design freedom, and in particular, by using the elastic behavior of the injection material, the fastening force with the input member 700 can be easily secured.

In addition, the control part 400 has a fitting hole 430 formed at the center thereof, and the fastening part 420 is formed at the inner circumferential surface of the fitting hole 430, and the fixing groove 460 and the guide toward the outside of the fitting hole 430. Slit 440 may be formed. In addition, the fastening part 420 is formed to protrude along the inner circumferential surface of the fitting hole 430, the fixing part 720 of the input member 700 is formed to protrude along the outer circumferential surface of the end of the input member 700 input member 700 ) May be fixed to the fastening part 420 when inserted.

Specifically, as shown in Figures 4 to 5, the fastening portion 420 is tapered shape so that the upper end is closed inward, such as a funnel or gokku, the lower end may be connected to the inner peripheral surface of the fitting hole 430. Accordingly, the upper end of the fastening part 420 has a certain degree of deformation and elasticity as the free end, and when the input member 700 is fastened, the outer diameter of the fixing part 720 of the input member 700 is the fastening part 420. Since the fixing part 720 is forcibly fitted to the fastening part 420 and penetrates the fastening part 420, it may be prevented from being caught in the fastening part 420 and separated from the reverse direction.

In addition, the fixing groove 460 is preferably formed so that the inner diameter is substantially the same as the outer diameter of the fixing protrusion 320 so that the lock cam 300 and the control part 400 rotate together without play, the guide slit 440 is It is preferable that the guide protrusion 220 is formed by a slit shape having a width equal to the diameter of the guide protrusion 220 and is formed to be a guide, instead of fixing the guide protrusion 220.

In addition, the fixing protrusion 320 is formed in a pair each formed in a position symmetrical with respect to the center of the lock cam 300, the fixing groove 460 is also a position symmetrical with respect to the center of the control part 400 Respectively formed in the fixing protrusion 320 may be fitted in a vertical direction to each corresponding fixing groove 460. Through this, the coupling between the fixing protrusion 320 and the fixing groove 460 is stable, and the torque transmitted from each other to the control part 400 and the lock cam 300 can be stably supplied to increase the durability of the parts. Improve the feeling of operation

As a result, the input member 700 is inserted at the center rear of the first flange 100 so that the fixing part 720 of the input member 700 penetrates the lock cam 300, and then the fixing part 720 is a control part ( By being fastened to the fastening part 420 of the 400, an installation position of the lock cam 300 and the lock gear 200 can be fixed between the control part 400 and the first flange 100, a separate The configuration of the fixing ring and the like becomes unnecessary.

According to the seat recliner of the vehicle of the present invention, it is possible to assemble the lock gear and the lock cam only by the existing control part and the input member without adding a separate mechanism for assembling the control part, the lock gear and the lock cam. can do.

While shown and described in connection with specific embodiments of the present invention, it is within the skill of the art that various changes and modifications can be made therein without departing from the spirit of the invention provided by the following claims. It will be self-evident for those of ordinary knowledge.

100: first flange 200: lock gear
300: Rock Cam 400: Control Parts
700: Input member

Claims (13)

A plurality of guide parts spaced apart from each other and having a guide space formed between the guide parts;
A plurality of lock gears having a lower surface portion seated in each of the guide spaces of the first flange, sliding forward and backward along the guide portion, and having an outer tooth formed at an outer end thereof, and having guide protrusions formed on the upper surface thereof;
A lock cam seated on a central portion of the first flange, the lock gear is advanced by pressing a plurality of lock gears during rotation, and a lock cam having a fixing protrusion at an upper surface thereof;
It is seated on the upper surface of the lock cam and the lock gear, the fastening portion is formed in the center, the bottom of the lock projection is inserted into the lock cam is formed with a fixed groove fixed to the lock cam, the guide protrusion of the rock gear is inserted into the guide slit control part;
A second flange coupled to the first flange so as to be relatively rotatable with the first flange, the second flange being shaped to cover the guide part, the lock gear, and the control part and meshing with the outer tooth of the lock gear; And
And an input member inserted at the center rear of the first flange, the end of which is fastened to the control part, and an end member having a fixed part fastened to the fastening part of the control part.
The control part is protruded upward from the center of the control part so as to extend into the through hole formed in the central portion of the second flange, the fastening portion protrudes upward from the outside of the input member. The method according to claim 1,
The protruding center portion of the control part extends to a position equal to or lower than a top end surface of the second flange so as not to protrude upward from the second flange. The method according to claim 1,
The protruded center portion of the control part is a seat recliner of the vehicle, characterized in that at least a portion of the outer circumferential surface is in contact with the inner circumferential surface of the through hole of the second flange. The method according to claim 1,
The control part is a fitting hole is formed in the center portion and the fastening portion is formed on the inner circumferential surface of the fitting hole, the seat recliner of the vehicle, characterized in that the fixing groove and the guide slit formed on the outside of the fitting hole. The method according to claim 4,
The fixing groove is formed on the rim of the fitting hole, the seat recliner of the vehicle, characterized in that formed at a point biased outward from the fixing groove. The method according to claim 4,
The fastening part protrudes along the inner circumferential surface of the fitting hole, and the fixing part of the input member protrudes along the outer circumferential surface of the input member end, so that the fastening part is locked to the fastening part when the input member is inserted. The method according to claim 6,
The fastening part has a tapered shape such that the upper end thereof is closed inwardly, and the lower seat is connected to the inner circumferential surface of the fitting hole. The method according to claim 7,
The outer diameter of the fixing part of the input member is formed larger than the inner diameter of the fastening part, the seat recliner of the vehicle, characterized in that the fixing part is inserted into the fastening part and penetrated through the fastening part to prevent it from being deviated in the reverse direction. The method according to claim 1,
The control part and the input member is a seat recliner of a vehicle, which is formed of a plastic resin material. The method according to claim 1,
The lock cam is positioned in the center of the first flange, the plurality of lock gears are arranged on the outer side of the lock cam along the circumference of the lock cam, the vehicle characterized in that the guide protrusion of the lock gear is located outwardly than the fixed projection of the rock cam Seat recliner. The method according to claim 1,
The fixing groove has an inner diameter equal to the outer diameter of the fixing protrusion, and the guide slit has a width equal to the diameter of the guide protrusion and has a slit shape extending to a predetermined length. The method according to claim 1,
The fixing protrusions are formed at positions symmetrical with respect to the center of the lock cam, and are formed in pairs. The fixing grooves are formed at positions symmetrical with respect to the center of the control part, respectively, and the fixing protrusions are formed at the corresponding fixing grooves. A seat recliner for a vehicle, which is fitted in the vertical direction. The method according to claim 1,
The input member is inserted from the center rear of the first flange, the fixing portion penetrates the lock cam and then is fastened to the fastening portion of the control part, so that the installation position of the lock cam and the lock gear is fixed between the control part and the first flange. Seat recliner of the vehicle.

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