KR101872260B1 - Recliner of vehicle seet - Google Patents

Abstract

The present invention relates to a recliner for a vehicle seat, comprising: a plate holder having a rim portion protruding from one side of a rim and having a plurality of guide protrusions formed on one side thereof; and a plate holder coupled to one side of the plate holder, An operating cam which is formed rotatably between the plate holder and the sector tooth and which is radially disposed outside the operating cam and which is rotatably disposed between the guide protrusions; A plurality of pawls guided by the inner gear and having an outer gear corresponding to the inner gear, a cam spring coupled between the operation cam and the plate holder to elastically support the operation cam, Is pressed toward the guide projection portion to generate a gap between the pole tooth and the guide projection portion It is possible to improve the clearance of the seat back due to the absence of a gap between the pole tooth and the guide projection portion because the pole tooth is pressed against the side surface of the guide projection portion by the pressure of the pressing portion when the recliner is locked It is effective.

Description

RECLINER OF VEHICLE SEET}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a recliner for a vehicle seat, and more particularly, to a recliner for a vehicle seat capable of adjusting an angle of a seatback provided so as to be rotatable at an angle with respect to the seat cushion.

Generally, the vehicle is provided with a seat so that the driver or the driver can sit comfortably. Such a seat is constituted by a seat cushion which supports a load of a passenger and which is installed on the floor surface of the room so as to be slidable back and forth, and a seat back which is rotatably provided at an angle with respect to the seat cushion and supports the back side of the occupant.

The driver or the rider adjusts the front and rear positions of the seat by pushing or pushing the seat cushion forward and rearward in accordance with the body shape of the driver and the rider so as to adjust the angle of the seat back with respect to the seat cushion so as to be the most comfortable posture when sitting on the seat.

As described above, the seatback, whose angle is adjusted with respect to the seat cushion, can be rotated through the hinge structure. The seat back can be switched from the locking state in which the angle is fixed to the seat cushion side to the unlocking state, A recliner is provided for maintenance and switching of the locking-unlocking state. That is, the reclining adjusts the angle of the seat back with respect to the seat cushion according to the shape and convenience of the driver and the rider.

Such a recliner is disclosed in Korean Patent Laid-open No. 10-2011-0135535, and FIG. 1 shows an example of a recliner of a conventional vehicle seat.

As shown in the figure, a recliner of a conventional vehicle seat includes a plate holder 1 coupled to a seat cushion frame, a sector tooth 2 coupled to a seatback frame and having an inner gear (not shown) An operating cam 4, a cam spring 5, a pawl tooth 6, and a cover bracket 7, to which an operating lever (not shown) is coupled at one end.

A plurality of guide protrusions 1a are formed on one surface of the plate holder 1 to guide the polytose 6 when the pole teeth 6 are moved. Support protrusions 1a for supporting both sides of the pole teeth 6 are formed between the guide protrusions 1a. (1b) is formed.

The operating cam 4, the cam spring 5 and the pole tooth 6 are provided in a space between the plate holder 1 and the sector tooth 2, and the pole tooth 6 is provided with a sector tooth 2 And an outer gear 6a engaged with the inner gear 2a is formed on the outer peripheral surface.

The cover bracket 7 surrounds the plate holder 1 and the outer circumferential surface of the sector tooth 2 to assemble the plate holder 1 and the sector tooth 2 to each other. The plate holder 1 and the sector tooth 2 2) in an appropriate state.

The operating cam 4 is configured to be actuated by the rotating shaft 3 coupled to the central shaft hole 4a to press the plurality of pole teeth 6.

The support protrusions 1b of one of the operation cam 4 and the plurality of support protrusions 1b are formed with engagement protrusions 1c and 4a for catching both ends of the cam spring 5. [

The cam spring 5 keeps the operating cam 4 in the operated state and moves the outer gear 6a of the pole tooth 6 and the inner side of the sector tooth 2 in the locked state of the operating cam 4, So that the gears 2a are resilient so as to maintain a state of engagement with each other. That is, one end of the cam spring 5 is engaged with the engagement projection 4a of the operation cam 4 and the other end is engaged with the engagement projection 1c of the support projection 1b.

Therefore, when the rotary cam 3 rotates by operating the recliner operating lever, the operating cam 4 rotates. When the operating cam 4 rotates, the pawl 6 rotates about the guide protrusion 1a The outer gear 6a of the pole tooth 6, which has engaged with the inner gear of the sector tooth 2, is disengaged.

Here, the pole tooth 6 is supported while being supported by the flow guide projection 1a formed on one surface of the plate holder 1 when the operation cam 4 rotates. The outer teeth 6a of the pawl teeth 6 are engaged with the inner gears of the sector teeth 2 by the support protrusions 1b which are spaced apart from each other by a predetermined distance from both sides of the guide protrusion 1b, And the like.

Then, the sector tooth 2 becomes rotatable with respect to the plate holder 1, so that the seat back frame coupled with the sector tooth 2 is in a state of being rotatable, It becomes possible.

When the operated recliner operation lever is released, the operation cam 4 is rotated in the opposite direction by the restoring force of the cam spring 5, so that the pole tooth 6 flows in the opposite direction, The outer gear 6a of the sector gear 2 is brought into engagement with the inner gear of the sector gear 2 so that the seatback of the vehicle can continuously maintain the state in which the angle adjustment is completed.

However, the recliner of the conventional vehicle seat as described above is disadvantageous in that when the outer gear 6a of the pole tooth 6 is engaged with or disengaged from the inner gear of the sector gear 2, A clearance must exist between the pole tooth 6 and the flow guide protrusion 1a and between the pole tooth 6 and the support protrusion 1b. This gap causes a clearance of the seat back, There was a problem that appeared.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a reclining apparatus, So that a clearance is not generated between the pole tooth and the support projection, thereby improving the clearance of the seat back.

Further, both side portions of the pole tooth and both side surfaces of the support protrusion are formed in a straight line so that both side surfaces of the support protrusion and the both side portions of the pole tooth can be polished, and the size of the pole tooth and the support protrusion can be easily managed. There is another purpose in providing the liner.

According to another aspect of the present invention, there is provided a plate holder comprising: a plate holder having a rim portion protruding from one side edge of the rim and having a plurality of guide protrusions formed on one side thereof; An operation cam formed with a sector tooth in which a gear is formed and a shaft hole in which a rotation shaft is coupled at the center and rotatably disposed between the plate holder and the sector tooth; And a cam spring which is coupled between the operation cam and the plate holder to elastically support the operation cam, and when the lock tooth is locked, The guide protrusions are pressed toward the guide protrusions so that a clearance is generated between the pole teeth and the guide protrusions. Wherein the pressing portion includes a fitting groove formed at one side of the guide projection portion, a pressing member fitted and coupled to the fitting groove, and a pressing portion for pressing the one side surface of the pole tooth, And a support groove formed to be gradually wider toward the inner gear of the sector tooth.

Preferably, the pressing member is coupled to the fitting groove, and a part of the pressing member protrudes from one side of the guide protrusion.

It is preferable that the pressing member is formed in a circular shape in cross section so as to be in close contact with one side surface of the guide projection and rotate when the pole tooth is reciprocated.

It is preferable that both sides of the pole tooth and both side portions of the guide projection for guiding the pole tooth are formed in a straight line so as to be in close contact with each other.

According to the present invention, when the recliner is locked, the pawl is brought into close contact with the side surface of the guide projection portion by the pressing of the pressing portion, so that no clearance is generated between the pawl tooth and the guide projection portion, and the clearance of the seatback can be improved.

In addition, since the side faces of the pole tooth and the guide projection are in close contact with each other and are formed in a straight plane, the side faces of the pole tooth and the guide projection can be polished and the dimension can be easily managed.

In addition, by engaging the cam spring so as to be located at the center of the recliner, it is possible to prevent torque from being unnecessarily generated in the locking function due to interference with the cam spring or eccentric load on other parts during rotation of the operation cam.

1 is an exploded perspective view showing a recliner of a conventional vehicle seat.
Fig. 2 is a plan sectional view of Fig. 1; Fig.
3 is an exploded perspective view showing a recliner of a vehicle seat according to an embodiment of the present invention.
Fig. 4 is a plan sectional view of Fig. 3; Fig.
Fig. 5 is a partial cutaway perspective view of Fig. 3; Fig.
Figs. 6 and 7 are plan sectional views showing locking and unlocking states of the recliner of Fig. 3; Fig.
8 is a detailed view of part A of Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

3 is an exploded perspective view showing a recliner of a vehicle seat according to an embodiment of the present invention, Fig. 4 is a plan sectional view of Fig. 3, and Fig. 5 is a partial cutaway perspective view of Fig. Figs. 6 and 7 are plan sectional views showing the locking and unlocking states of the recliner of Fig. 3, and Fig. 8 is a detailed view of the portion A of Fig.

The recliner 100 of the seat for a vehicle according to an embodiment of the present invention includes a plate holder 200, a sector tooth 300, an operation cam 400, a plurality of pole teeth 600, A spring 700, and a pressing portion 800.

First, the plate holder 200 is installed in a seat cushion frame, and a through hole 210 through which a rotation shaft is inserted is formed at the center. A plurality of guide protrusions 220 protrude radially from one surface of the plate holder 200 and are formed at regular intervals. A rim 230 is formed at one side of the edge of the plate holder 200. One side of the rim 230 is connected to an operation cam 400, a plurality of pole teeth 600, Thereby forming a space in which the spring 700 is installed.

A plurality of guide protrusions 220 are formed. In an embodiment of the present invention, three guide protrusions 220 are formed at intervals of 120 degrees. The plurality of guide protrusions 220 guides the plurality of pawls 600 to be described later when the recliner 100 is operated. The guide protrusions 220 guide the plurality of pawls 600, which will be described later, And serves to guide the rotation of the operation cam 400 rotated at an angle.

The guide protrusions 220 are formed in a fan shape so that both sides guide the reciprocal movement of the pole teeth 600 and the curved surface 222 is formed at the lower end to guide the rotation of the operation cam 400 to be described later.

A locking protrusion 222 is formed on one of the guide protrusions 220 of the plurality of guide protrusions 220 so as to catch the end of a cam spring 700 described later.

An inner gear 310 is formed on an inner circumferential surface of one side of the plate holder 300 facing the plate holder 200 along the circumferential direction and a side surface of the plate holder 200 As shown in FIG. A through hole 320 is formed at the center of the sector tooth 300 to communicate with the through hole 210 of the plate holder 200 when the plate holder 300 is coupled to the plate holder 200.

Here, the rotary shaft 500 is engaged at one end with a recliner operation lever which the occupant operates to adjust the angle of the seat back. The rotation shaft 500 is coupled to the shaft hole 410 formed at the center of the operation cam 400 to be described later and rotates together with the operation cam 400 when the rotation shaft 500 rotates.

The operation cam 400 is disposed between the plate holder 200 and the sector tooth 300 and a shaft hole 410 through which the rotation shaft 500 is inserted to rotate together with the rotation shaft 500 is formed at the center.

The end surface of the shaft hole 410 and the end surface of the rotation shaft 500 are formed in the same shape as the rotation shaft 500 and the shaft hole 410 so that the rotation shaft 500 does not rotate in the shaft hole 410, , A square, a triangle, and a spline.

A boss portion 420 for forming a space for installing and operating the cam spring 700 between the sector tooth 300 and the operation cam 400 is formed at the center of the operation cam 400, And is protruded toward the sector tooth 300 from the periphery of the sector tooth 300.

The outer circumferential surface of the operation cam 400 has a radius corresponding to the radius of curvature of the curved surfaces 221 so as to be fitted and contacted between the curved surfaces 221 of the plurality of guide protrusions 220 when the operation cam 400 is rotated .

A plurality of first coupling protrusions 430 in the form of a ring are protruded from the outer periphery of the operation cam 400. The plurality of first coupling protrusions 430 are formed at angles at which the plurality of pole teeth 600 are installed Are formed at the same angular intervals. 4, the plurality of first engaging projections 430 protrude in the counterclockwise direction, so that a plurality of first engaging projections 430 are formed between the first engaging projections 430 and the outer peripheral surface of the operation cam 400, The first engaging groove 431 in which the second engaging projection 620 of the second engaging projection 600 is inserted is formed.

The boss portion 420 of the operation cam 400 is formed with a latching groove 440 for engaging one end of a cam spring 700 to be described later. A plurality of pole teeth 600 are disposed radially outside the operation cam 400.

The plurality of pole teeth 600 are coupled between the plurality of guide protrusions 220 and are reciprocated by the rotation of the operating cam 400 to engage or disengage the inner gear 310 of the sector tooth 300, Locking and unlocking actions of the liner 100 are performed.

An outer gear 610 engaged with the inner gear 310 is formed on the outer circumferential surface of one end of the pole tooth 600 and a first coupling protrusion 610 of the operation cam 400 The second engaging projection 620 engaging with the second engaging projection 430 is formed. The second engaging projection 620 is formed in a clockwise direction so as to protrude in the circumferential direction so as to be caught by the first engaging projection 430 and fit into the first engaging groove 431.

Accordingly, the second engaging groove 630 is formed by the second engaging projection 620, and the first engaging projection 430 is fitted into the second engaging groove 630.

A supporting protrusion 640 protruding downward is formed at one end of the other end of the pole tooth 600 so that the locking protrusion 640 is supported by the first engaging protrusion 430 of the operating cam 400 when the recliner 100 is locked. The protrusion 640 is pressed so that the outer gear 610 of the pole tooth 600 is engaged with the inner gear of the sector tooth 300.

The cam spring 700 is formed in a spiral shape so that one inner end portion 710 is bent toward the center and the other outer end portion 720 is bent toward the outside.

The cam spring 700 has one end portion 710 fitted into the engagement groove 440 of the operation cam 400 and the other end portion 720 engaged with the guide projection portion 220 to be engaged. The cam spring 700 can move the operation cam 400 when the actuating lever of the reclining mechanism 100 is operated and when the actuating cam 400 is rotated and unwound or released to release the operation of the actuating lever, Thereby providing a restoring force for reversing the rotation.

The pressing portion 800 presses the pawl tooth 600 toward the guide protrusion 220 when locking the recliner 100 to prevent a gap between the pawl tooth 600 and the guide protrusion 220 from being generated do.

The pressing portion 800 includes a fitting groove 810 formed at one side of the guide protrusion 220, a pressing member 820 pivotally fitted in the fitting groove 810, And a support groove 830 formed on one side of the opposite pole tooth 600 and formed to be gradually wider toward the inner gear 310 of the sector tooth 300.

The pressing member 820 is coupled to the fitting groove 810 so that a part of the outer circumferential surface of the pressing member 820 protrudes to one side of the guide protrusion 220. The pressing member 820 is formed in a circular shape so as to be in close contact with one side surface of the guide protrusion 220 and rotate when the pole tooth 600 reciprocates.

4, the retaining groove 830 is formed in an inverted triangular shape toward the upper side so that when the recliner 100 is locked, the pressing member 820 is positioned below the support groove 830, It is pressed toward the guide protrusion 220 provided on the opposite side of the pressing member 820 to prevent a gap between the pole tooth 600 and the guide protrusion 220 from being generated. The pressing member 820 is moved from the lower side to the upper side of the support groove 830 so that the pawl tooth 600 can move smoothly in the direction of the rotary shaft 500 during the unlocking action of the recliner 100, 600).

Both sides of the pawl 600 and both sides of the guide protrusion 220 for guiding the pawl tooth 600 are positioned on the side of the guide protrusion 220 in the space between the guide protrusions 220 And is formed in a straight line (plane) so as to be guided and reciprocated in the contacted state. When the both sides of the pole tooth 600 and both side surfaces of the guide protrusion 220 are formed in a straight line, the pole tooth 600 is stuck between the guide protrusions 220 when the parts are manufactured, It is possible to smoothly reciprocate the pole tooth 600 by polishing both side surfaces of the pole tooth 600 and both side surfaces of the guide protruding portion 220. [ In other words, since the pole tooth 600 and the guide protrusion 220 can be polished, it is easy to manage the dimensions of the parts.

Hereinafter, the operation of the recliner of the vehicle seat according to the embodiment of the present invention will be briefly described.

First, the seat back of the seat is normally fixed at a predetermined angle, that is, the recliner 100 is in the locked state. That is, the outer gear 610 of the pawl tooth 600 is engaged with the inner gear 310 of the sector tooth 300 fixed to the seat back frame, so that the sector tooth 300 is in the locked state .

The occupant seated on the seat in such a locking state of the recliner 100 operates the recliner operating lever to adjust the inclination of the seat back in order to ease the boarding posture. Then, the rotating shaft 500 having the recliner operating lever rotates at a certain angle. Then, the operation cam 400 coupled to the rotation shaft 500 is rotated at a certain angle.

At this time, the operation cam 400 rotates in the counterclockwise direction in FIG. 6, and the first engagement protrusion 430 of the operation cam 400 is inserted into the second engagement groove 630 and the second engagement protrusion 620 In the direction of the rotating shaft 500. [

The outer teeth 610 of the pole tooth 600 meshed with the inner gear 310 of the sector tooth 300 move to the inner side of the sector tooth 300 as the pole tooth 600 moves toward the rotating shaft 500. [ The recliner 100 is unlocked while being disengaged from the gear 310.

At this time, the occupant adjusts the inclination angle of the seat back. Of course, the occupant must maintain the operation of the recliner operating lever when adjusting the inclination angle of the seat back.

Thereafter, the occupant releases the operation of the operating lever when the inclination angle of the seatback is adjusted. 7 by the restoring force of the cam spring 700, the first engaging protrusion 430 presses the other end of the pole tooth 600. As a result,

The outer teeth 610 are engaged with the inner gears 310 of the sector teeth 300 while the pole tooth 600 is in contact with the guide protrusions 220 provided on the right side in FIG. 7 by the pressing portion 800 . The retaining protrusion 640 of the pole tooth 600 is retained by the first engaging protrusion 430 of the actuating cam 400 so that the reclining lock state is maintained.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

100: Recliner
200: plate holder 210: through hole
220: Guide protrusion 230: Rim
300: sector to tooth 310: inner gear
320: Through hole
400: operating cam 410: shaft hole
420: boss unit 430: first engaging projection
440:
500:
600: pole tooth 610: outer gear
620: second engaging projection 630: second engaging groove
640: support projection
700: cam spring
800: pressing portion 810: fitting groove
820: pressing member 830: supporting groove

Claims (4)

A plate holder having a rim portion protruding from one side of the rim and having a plurality of guide protrusions formed on one side thereof;
A sector tooth coupled to one side of the plate holder and having an internal gear formed therein;
An operating cam rotatably disposed between the plate holder and the sector tooth;
A plurality of pole teeth guided by the guide protrusions and having an outer gear corresponding to the inner gear;
A cam spring coupled between the operation cam and the plate holder to elastically support the operation cam; And
And a pressing portion for pressing the pole tooth toward the guide projection when locking the recliner,
The pressing portion
A fitting groove formed on one side of the guide projection,
A pressing member which is fitted in the fitting groove and is partly protruded from one side of the guide projection,
A support groove formed on one side of the pole tooth facing one side of the guide protrusion, the support groove being formed to be wider in width toward the inner gear of the sector tooth;
And a reclining unit for reclining the vehicle seat.
delete The method according to claim 1,
The pressing member
Wherein the guide groove is formed in a circular shape in cross section so as to be in close contact with one side surface of the guide projection and rotate when the pole tooth is reciprocated. The method according to claim 1,
Wherein both sides of the pole tooth and both side portions of the guide projection for guiding the pole tooth are formed in a straight line so as to be in close contact with each other.

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