KR101586948B1 - Recliner of vehicle seet - Google Patents

Abstract

The present invention relates to a recliner of a vehicle seat, which comprises: a plate holder distanced from each other in a radial shape to have multiple guide blocks protruding in the direction of an axis; a sector tooth which rotates with relative to the plate holder and has an internal gear formed on the inner circumferential surface; a pole tooth with an external gear corresponding to the internal gear on the outer circumferential surface, a hanging ring formed by protruding from one side of the inner circumferential surface, and a connecting groove formed on the other side of the inner circumferential surface, which is placed to move in between a pair of guide blocks facing each other among the multiple guide blocks; a first cam whose center unit is combined with a lever shaft with a spline, which is selectively rotated in the normal direction and the reverse direction by the lever shaft, and which has a pulling ring formed on the outer circumferential surface; and a second cam with a connecting bump to be connected by being inserted into the connecting groove of the pole tooth, which is combined by being inserted between the pole tooth and the guide blocks. Therefore, the gap between the pole tooth and the guide blocks can be reduced by the separate second cam on the pole tooth inserted between a pair of guide blocks, thereby eliminating the need to meet a strict manufacturing allowance when manufacturing the pole tooth, and reducing costs for processing of parts.

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.

BACKGROUND ART Generally, a recliner of an automobile is a device for adjusting the angle of a seat back with respect to a seat cushion according to the body shape or convenience of a passenger.

One example of the lever type recliner among such recliners is disclosed in Korean Patent Registration No. 10-0513576.

1 is a view showing an example of a conventional recliner.

As shown in the figure, in the conventional recliner, the sector tooth 30 is rotatably coupled to the inner surface of the groove of the plate holder 20 by a guide bracket. An operation cam 40, a pole tooth 50 and a cam spring (not shown) are provided between the plate holder 20 and the sector tooth 30 to restrict the rotation of the sector tooth 30.

Here, the plate holder 20 is installed in the seat cushion frame, and a plurality of guide blocks 21 are protruded at a predetermined angle at one side.

The sector tooth 30 is provided in the seat back frame, and a through hole is formed at the center, and an inner gear 31 is formed on the inner peripheral surface of the rim. The actuating cam 40 is installed between the plate holder 20 and the sector tooth 30 and is configured to be seated in the periphery of the through hole and rotated at a certain angle.

At the center of the operating cam 40 is formed a shaft hole 41 which is splined to a rotating shaft linked to the recliner operating lever.

A plurality of pole teeth 50 are disposed outside the operation cam 40. The rotation of the operation cam 40 causes the pole teeth 50 to engage or disengage the inner gear 31 of the sector tooth 30 Locking and unlocking of the recliner is performed. A plurality of pulling bosses 42 are protrudingly formed on the outer periphery of the operation cam 40 to pull the pole tooth 50 toward the operation cam 40.

In the pole tooth 50, an outer gear 51 which meshes with the inner gear 31 of the sector tooth 30 is formed at one end thereof. A support protrusion 52 supported by the operation cam 40 is formed at one end of the other end of the pole tooth 50 and a retaining ring 53 engaged with the pulling ring 42 of the operation cam 40 .

A return spring (not shown) is provided between the operation cam 40 and the plate holder 20 for generating an elastic force when the recliner is operated and returning the operation cam 40 to the original state when the operation is released.

In this conventional recliner, a sector tooth 50 is movably provided between a pair of guide blocks 21 adjacent to each other among a plurality of guide blocks 21 of the plate holder 20.

The pulling ring 42 of the operating cam 40 during locking of the recliner presses the support protrusion 52 of the pawl tooth 50 so that the outer gear 51 of the pawl tooth 50 is inserted into the inside of the sector tooth 30 When the locking ring 42 of the operating cam 40 is rotated by hooking the hooking ring 53 of the pawl 50 when the reclining is released, Is pulled toward the operating cam 40 to separate the outer gear 51 of the pole tooth 50 from the inner gear 31 of the sector tooth 30.

However, since the conventional recliner is configured such that the pole tooth 50 is guided and reciprocated by the pair of guide blocks 21, a gap is generated between the guide block 21 and the pole tooth 50, If the clearance is too narrow, the flow of the pole tooth 50 is not smooth, and if the clearance is wide, there arises a problem that front and rear clearance of the seatback frame occurs.

In order to minimize the generation of the gap, there is a problem that the cost is increased due to a strict manufacturing tolerance for machining the guide block 21 and the pole tooth 50.

Korean Patent Registration No. 10-0513576

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a recliner for a vehicle seat capable of smoothly flowing a pole tooth while preventing a gap between a pole tooth and a guide block from being generated. It has its purpose.

According to an aspect of the present invention, there is provided a plate holder comprising: a plate holder having a plurality of guide blocks radially spaced apart from each other and protruding in an axial direction; a sector holder having an inner gear formed on an inner peripheral surface thereof, And a coupling groove is formed on the other side of the inner circumferential surface of the guide block so as to move between a pair of guide blocks facing each other among the plurality of guide blocks, A first cam splined to a lever shaft and selectively rotatable in forward and reverse directions by a lever shaft and having a first cam formed with a pulling ring on an outer circumferential surface thereof, And a second cam formed with a coupling protrusion and fitted and coupled between the pole tooth and the guide block, The pulling ring of the first cam pulls the hook of the pawl while the first cam rotates in the reverse direction during locking and the pulling ring of the first cam presses the inner circumferential face of the pawl while the second cam is pivoted And the outer gear is engaged with the inner gear by pushing the second cam against the pulling ring of the first cam after the inner gear is moved to the inner gear group.

In addition, the connection groove and the connection protrusion are formed to be curved so that the connection protrusion flows in the connection groove.

Further, it is preferable that a gap is formed between the connection groove and the connection projection.

Further, the pawl tooth has a first inclined surface extending in the connection groove and radially inward, and an outer gear is formed on the entire outer surface. When the pair of guide blocks are moved in the pair of guide blocks, To be guided by the guiding block of the guiding portion.

The second cam is provided with a vertical surface guided to the guide block at one side thereof and a second inclined surface corresponding to the first inclined surface of the pole tooth at the other side thereof, It is preferable that a third inclined surface to be pressed by the pulling ring of the first cam is formed.

According to the present invention, it is possible to reduce the gap between the pole tooth and the guide block by the second cam on the pole tooth sandwiched between the pair of guide blocks, thereby avoiding strict production tolerance in manufacturing the pole tooth, It is possible to reduce the cost due to the machining.

1 is a sectional view showing a conventional vehicle recliner;
2 is an exploded perspective view showing a vehicle recliner according to a first embodiment of the present invention;
Fig. 3 is a sectional view showing the recliner of Fig. 2; Fig.
4 is a plan view showing a guide block and a pole tooth of a plate holder in the recliner of FIG. 2;
Fig. 5 is a sectional view showing the locking state of the recliner of Fig. 2; Fig.
6 is a sectional view showing the unlocked state in the recliner of Fig. 6 and Fig. 2; 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.

Fig. 2 is an exploded perspective view showing a recliner for a vehicle according to a first embodiment of the present invention, Fig. 3 is a sectional view showing the recliner of Fig. 2, And is a plan view showing the pole tooth. Fig. 5 is a sectional view showing the locking state of the recliner of Fig. 2, and is a sectional view showing the unlocked state of the recliner of Figs. 6 and 2. Fig.

The recliner 100 according to the first embodiment of the present invention includes a plate holder 110, a sector tooth 120, a pole tooth 130, a first cam 140, a second cam 140, 150).

The plate holder 110 is installed in the seat cushion frame and has a through hole through which a lever shaft is inserted through the center. On one side of the plate holder 110, a guide block 111 is provided to reciprocate the pole tooth 130 in a radial direction of the plate holder 110.

A plurality of guide blocks 111 are radially spaced apart from each other, and are axially protruded from one surface of the plate holder 110.

In the embodiment of the present invention, as shown in FIG. 3, the example is made of four, but it can be changed and applied according to the number of the pole teeth 130.

The sector tooth 120 has a rim portion protruding from one side of the outer circumferential edge, and an inner gear 121 is formed on the inner circumferential surface of the rim portion. The sector tooth 120 is coupled to the plate holder 110 through a guide ring and includes a pole tooth 130, a first cam 140, and a second cam 150, which will be described later, between the plate holders 110 Thereby forming a space.

A through hole communicating with the through hole of the plate holder 110 is formed at the center of the sector tooth 120. A lever shaft rotated when the recliner 100 is operated is inserted through the through hole.

The pole tooth 130 is guided by a pair of guide blocks 111 facing each other among the plurality of guide blocks 111 and installed to move radially with respect to the plate holder 110. The pole tooth 130 is guided by one guide block 111 of one of the guide blocks 111 facing one side of the pole tooth 130 and guided to the other guide block 111 by a second cam 150 .

An outer gear 131 corresponding to the inner gear 121 is formed on the outer circumferential surface (the surface facing the inner gear of the sector tooth), and the outer gear 131 is formed on the inner circumferential surface A hooking ring 132 is formed. The latching ring 132 is protruded from the one side of the inner circumference of the pole tooth 130 toward the first cam 140 and then bent to form the latching groove 133 in the circumferential direction. That is, the latching ring 132 is protruded from one side of the inner circumferential surface of the pole tooth 130, which is guided directly to the guide block 111.

The pole tooth 130 is pressed or pulled by the rotation of the first cam 140 to be described later to be sandwiched between a pair of adjacent guide blocks 111 of the plurality of guide blocks 111, And is reciprocated in the radial direction.

The first cam 140 is coupled to a lever shaft to which a recliner operation lever operated by an occupant is coupled, and is configured to rotate together with the lever shaft by operation of the recliner lever. Accordingly, the first cam 140 is disposed between the sector tooth 120 and the plate holder 110 and is configured to be rotated in forward and reverse directions about the lever shaft.

The first cam 140 is disposed in the center of the plurality of pawl teeth 130 to press or pull the pawl teeth 130 to perform locking and unlocking actions of the recliner.

A shaft hole is formed at the center of the first cam 140 so that a lever shaft is fitted and spline coupled. The first cam 140 is connected to the outer circumferential surface of the first cam 140 so as to be connected to the outer circumferential surface of the outer circumferential surface of the outer circumferential surface of the outer circumferential surface of the first cam 140, . That is, the first cam 140 is configured to pull the pawl 130 while the pulling hook 141 is hooked on the hooking ring 132 while rotating in the forward direction at the time of unlocking.

The pulling hook 141 of the first cam 140 has a fitting groove 142 into which the hooking ring 132 is fitted. The pulling pawls 141 are formed in the same number as the pawl teeth 130 so as to simultaneously press or pull the plurality of pawl teeth 130 when the first cam 140 rotates at a predetermined angle.

The recliner 100 according to the present invention includes a guide block 111 and a pole tooth 130. The link protrusion 151 protrudes from one end of the recliner 100 and is inserted into the connection groove 134 of the pole tooth 130, And a second cam 150 which is guided by the guide block 111 and is moved together with the pole tooth 130. As shown in FIG.

Accordingly, the recliner 100 is configured such that, when the first cam 140 rotates in the normal direction during the unlocking, the pulling hook 141 of the first cam 140 pulls the hooking loop 132 of the pawl 130 When the first cam 140 rotates in the reverse direction and the pulling ring of the first cam 140 presses the inner circumferential surface of the pawl 130 during locking, the second cam 150 rotates together with the pawl 130, The pulling ring 141 of the first cam 140 presses the second cam 150 so that the outer gear 131 of the pawl tooth 130 is engaged with the inner gear 121 .

The pole tooth 130 is formed with a connecting groove 134 for connecting the second cam 150 to the opposite side of the latching ring 132, that is, the other side of the inner circumferential surface.

The second cam 150 is formed with a coupling protrusion 151 which is inserted into the coupling groove 134 of the pole tooth 130 and flows in the coupling groove 134.

Here, the connection groove 134 and the connection protrusion 151 are formed to be curved so that the connection protrusion 151 flows in the connection groove 134. That is, the connecting groove 134 is formed in a concave curved surface, and the connecting protrusion 151 is formed in a convex curved surface so that the first cam 140 rotates when the reclining 100 is unlocked, And is configured to push the coupling protrusion 151 fitted in the coupling groove 134 when pulled toward the shaft.

The first cam 140 rotates in the reverse direction when the reclining 100 is locked, and the first cam 140 rotates in the reverse direction, The pawl 130 pulls the second cam 150 toward the inner gear 121 when the pawl 130 presses the pawl 130 so that a clearance is formed between the pawl 130 and the connecting protrusion 151 . 5, the lower portion of the connection groove 134 and the lower side of the connection protrusion 151 come into close contact with each other, and a gap is formed in the upper portion of the connection groove 134 and the upper portion of the connection protrusion 151. [

Thereafter, when the first cam 140 is further rotated in a direction opposite to the first cam 140, the pulling hook 141 of the first cam 140 is in contact with the pawl 130 and the second cam 150 is pressed. The second cam 150 is in close contact with the guide block 111 and presses the pawl 130 toward the inner gear 121. At this time, the outer gear 131 of the pawl tooth 130 is pushed toward the inner side So that the pole tooth 130 is prevented from flowing between the pair of guide blocks 111 while being completely engaged with the gear 121.

The pole tooth 130 has a first inclined surface 135 extending in the connection groove 134 and the first inclined surface 135 is formed radially inward.

The second cam 150 is formed such that a vertical plane guided by one of the pair of guide blocks 111 is formed on one side when the pole tooth 130 is moved together with the pole tooth 130 when the pole tooth 130 is moved. do. A second inclined surface 152 corresponding to the first inclined surface 135 of the pole tooth 130 is formed on the other side of the second cam 150. At the end of the second inclined surface 152, A third inclined surface to be pressed by the retaining ring 132 of the first cam 130 is formed.

4, the distance between the pair of guide blocks 111 formed to be spaced apart from each other is b, and the distance between the pair of guide blocks 111 formed on the pole tooth 130 by the second cam 150 constituting the other side of the pawl 130 guided by the other side guide block 111 and one side of the pawl 130 guided by the one side guide block 111 in a state where the pawl 130 and the pawl 130 are coupled to each other, 150 is a, a is satisfied when the recliner is locked, and b < a is satisfied when the reclining is unlocked (unlocked).

The recliner action of the vehicle seat according to one embodiment of the present invention as described above will be briefly described.

Normally, the seat of the automobile is in a state in which the inclination angle of the seat back is fixed at a predetermined angle, that is, the recliner is in the locked state. That is, in the locking state of the recliner configured such that the outer gear 131 of the pawl tooth 130 is engaged with the inner gear 121 of the sector tooth 120 fixed to the seat back frame so that the sector tooth 120 is not rotated do.

When the occupant sits on the seat in such a recliner locking state, the recliner operating lever is operated so as to be in a comfortable posture. Then, the lever shaft to which the recliner operating lever is coupled rotates at a certain angle, and the rotation of the lever shaft also rotates the first cam 140 at a certain angle.

The first cam 140 is rotated clockwise in FIG. 2 so that the pulling hook 141 is inserted into the latching groove 133 of the latching ring 132 of the pawl 130 and the pawl 130 is rotated, To the first cam (140). The outer teeth 131 of the pawl teeth 130 engaged with the inner gears 121 of the sector teeth 120 are disengaged and the recloser 100 is released.

The second cam 150 coupled to the pawl 130 also has a connecting protrusion 130 coupled to the connecting groove 134 of the pawl 130 when the pawl 130 moves toward the first cam 140 151 are pressed by the connecting groove 134 and moved toward the first cam 140 together with the pole teeth 130.

At this time, the occupant adjusts the inclination angle of the seat back by pushing the seat back to the back or removing the back from the seat back. Of course, the occupant must continue to operate the reclining lever until the inclination angle of the seatback is adjusted.

Thereafter, the occupant releases the operation of the recliner operating lever when the inclination angle of the seatback is adjusted.

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
110: plate holder 111: guide block
120: sector tooth 121: inner gear
130: pole tooth 131: outer gear
132: Retaining ring 133: Retaining groove
134: connection groove 135: first inclined surface
140: First cam 141: Bending ring
142:
150: second cam 151: connecting projection
152: second inclined surface

Claims (5)

A plate holder spaced radially from each other and having a plurality of axially projecting guide blocks;
A sector tooth relatively rotating with the plate holder and having an inner gear formed on an inner peripheral surface thereof;
And a coupling groove is formed on the other side of the inner circumferential surface to be moved between a pair of guide blocks facing each other among the plurality of guide blocks, Paul Tooth;
A first cam spline coupled to the lever shaft at a central portion thereof, selectively rotatable in forward and reverse directions by a lever shaft, and having a pulling ring formed on an outer circumferential surface thereof;
And a second cam which is formed with a coupling protrusion that is inserted into and connected to the coupling groove of the pole tooth and that is inserted and coupled between the pole tooth and the guide block,
When the first cam is rotated in the forward direction and the first cam is rotated in the reverse direction while the first cam is pulled by the pulling hook of the first cam while the first cam is rotating in the forward direction and the pulling ring of the first cam presses the inner circumferential surface of the pole, The outer gear is engaged with the inner gear by pressing the second cam against the pulling ring of the first cam after the second cam is moved toward the inner gear together with the pawl tooth,
Paul Tus,
And a first inclined surface extending in the coupling groove and formed in the radial direction toward the inside,
Wherein an outer gear is formed on the entire outer circumferential surface and both side surfaces are supported by a pair of guide blocks when the guide gear is moved by the pair of guide blocks. The method according to claim 1,
Wherein the connecting groove and the connecting protrusion are formed in a curved surface so that the connecting protrusion flows in the connecting groove.
The method of claim 2,
Wherein a clearance is provided between the connecting groove and the connecting projection.
delete The method according to claim 1,
The second cam
A vertical surface guided to the guide block is provided at one side,
And a second inclined surface corresponding to the first inclined surface of the pole tooth is provided on the other side,
And a third inclined surface, which is pressed by the pulling ring of the first cam when the first cam is rotated in the reverse direction when locking, is formed on the end portion of the reclining member.

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