KR20110135535A - Recliner of seat for automobile - Google Patents

Abstract

PURPOSE: A recliner of a car seat is provided to improve airtight performance by forming an oil film using solidification. CONSTITUTION: A recliner of a car seat comprises a plate holder(10), a sector tooth(20), a cam lever(40), a pole tooth(50), and a sealing member(80). The plate holder is combined with a seat cushion frame. The plate holder has rotation center protrusions on onside at a regular interval. The sector tooth is combined with the seat back frame. The cam lever is arranged between the plate holder and the sector tooth. The pole tooth is included in the outside of the cam lever in a radial direction.

Description

Recliner of car seat {RECLINER OF SEAT FOR AUTOMOBILE}

The present invention relates to a recliner of a vehicle seat, and more particularly, to a recliner of a vehicle seat for imparting a sealing function to a contact portion between components of the recliner.

A general vehicle seat includes a seat back for supporting a passenger's back and a seat cushion for supporting a thigh at the hip, and the seat back has an angle adjustable structure by a recliner. In recent years, endless recliners that are angularly adjusted to make fine adjustments are easily used.

The seat has a frame made of a seat cushion frame and a seat back frame, and a recliner for adjusting the angle of the seat back in the front and rear directions of the vehicle body is mounted at the joint portion between the seat cushion frame and the seat back frame. do.

As shown in FIGS. 1 and 2, the recliner includes a plate holder 1 coupled to a seat cushion frame, a sector tooth 2 coupled to a seat back frame and an internal gear (not shown) formed on an inner surface thereof in a circumferential direction. ), The recliner lever is configured to include a shaft (3), a cam lever (4), a cam spring (5), a pole tooth (6), and a cover bracket (7) coupled to one end.

Here, the cam lever 4, the cam spring 5 and the pole tooth 6 are components installed in the space between the plate holder 1 and the sector tooth 2, among which the pole tooth 6 ), A pole tooth gear 6a is formed on the outer circumferential surface to selectively engage the internal gear of the sector tooth 2.

The cover bracket 7 is a component for assembling the plate holder 1 and the sector tooth 2 with each other while surrounding the outer circumferential surface of the plate holder 1 and the sector tooth 2. The space between the holder 1 and the sector tooth 2 is maintained in a proper state by the cover bracket 7.

Therefore, when the shaft 3 rotates by operating the recliner lever, the cam lever 4 rotates, and when the cam lever 4 rotates, the pole tooth 6 rotates about the rotation center protrusion 1a. Accordingly, the pole tooth gear 6a which is engaged with the internal gear of the sector tooth 2 is switched to the state where the engagement is released.

Then, the sector tooth 2 is in a state capable of rotating with respect to the plate holder 1, and thus the seat back frame combined with the sector tooth 2 is in a state capable of rotating, thereby making the seat back of the vehicle. Is to be able to adjust the angle.

When the recliner lever being operated is released, the pole tooth 6 rotates in the opposite direction due to the restoring force of the cam spring 5, and the internal gears of the pole tooth gear 6a and the sector tooth 2 are engaged again. As a result, the seat back of the vehicle can continuously maintain the state where the angle adjustment is completed.

In addition, when the pole tooth 6 rotates in the opposite direction due to the restoring force of the cam spring 5, the cam lever 4 and the shaft 3 also rotate in the opposite direction together with each other to return to the original state. You are ready for the next action.

The round type recliner as described above is already described in detail in patent application No. 10-2007-0082182 filed on August 16, 2007, the description thereof will be omitted. do.

However, in the conventional recliner as described above, a gap is formed between the outer circumferential surface of the shaft 3 and the inner circumferential surface of the hole formed in the center of the outer wall of the plate holder 1 and the sector tooth 2 so that the shaft 3 passes through the center. A separate washer, which was a washer (Plane washer 8a) and a paper washer (8b), was to be sealed. At this time, the shaft 3 is a component necessary for the function for sealing together with the original function of the shaft, and is inserted into the recliner and then sealed through the plane washer 8a and the paper washer 8b.

Moreover, an operating part such as the pole tooth 6 requires a minimum clearance between the plate holder 1 and the sector tooth 2 for operation, so that a separate member for clearance management is required. There were problems such as increased number, increased number of assembly processes, and higher costs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to form a minimum clearance that does not affect the operation of the recliner's working parts, and through the sealing member such as grease or the like without additional parts. An object of the present invention is to provide a recliner of a vehicle seat capable of implementing a sealed structure.

Further, another object of the present invention is to provide a recliner for a vehicle seat, in which, when the sealing member is grease, an oil film is formed by solidification by heat, so that the sealing function can be improved by the oil film.

In order to achieve the above object, the present invention is coupled to the seat cushion frame, the plate holder is provided with rotation center projections on one surface at equal intervals; A sector tooth coupled to the seat back frame and having an internal gear formed along an circumferential direction on an inner circumferential surface thereof; A cam lever disposed between the plate holder and the sector tooth and interlocked by rotation of a shaft coupled to the recliner lever at one end thereof; A pole tooth radially provided on an outer side of the cam lever, and a pole tooth gear for selectively engaging the internal gear of the sector tooth is formed on an outer circumferential surface thereof so as to rotate around the center of rotation; And a sealing member interposed in a contact surface gap formed by contacting at least two or more of a plate holder, a sector tooth, and a cam lever to form a sealed structure.

Further, in the present invention, the sector tooth on the central side of the plate holder and the cam lever such that a sealing member is provided between the central side of the opposing surface of the plate holder and the sector tooth and the central side of both side surfaces of the cam lever interposed between the opposing surface. Each bent portion facing the same in the direction is formed, characterized in that the cam spring is disposed to the outside of the bent portion of the cam lever.

Further, in the present invention, a bent portion directed in the sector tooth direction is formed on the outer peripheral surface side of the plate holder so that a sealing member is provided on the outer peripheral surface side of the opposing plate holder and the sector tooth, and is bent toward the plate holder direction on the outer peripheral surface side of the sector tooth. An additional portion is formed, and the bending portion between the plate holder and the sector tooth is simultaneously covered by a cover bracket.

In addition, the sealing member in the present invention is characterized in that the grease (Grease).

In addition, the grease in the present invention is characterized by forming an oil film by solidification with heat.

The grease composition of the present invention is characterized by containing a base oil composed of synthetic hydrocarbon oil, a barium compound soap thickener and an olefin polymer additive.

In addition, the grease composition in the present invention is characterized in that it comprises 55.0 to 70.0% by weight of the base oil, 20.0 to 30.0% by weight of the barium compound soap thickener and 5.0 to 10.0% by weight of the olefin polymer.

The recliner of the vehicle seat of the present invention as described above forms a minimum gap that does not affect the operation of the recliner's operating parts and implements a sealed structure without additional parts by interposing a sealing member such as grease in the gap. When the sealing member is grease, by forming the oil film by solidification by heat, there is an effect that the sealing function can be improved by the oil film.

1 is an exploded perspective view showing a conventional recliner of a vehicle seat.
2 is a side cross-sectional view of the recliner of the vehicle seat.
3 is an exploded perspective view showing a recliner of a vehicle seat according to an embodiment of the present invention.
4 is a side cross-sectional view of the recliner of the vehicle seat.

Hereinafter, an embodiment of the recliner of a vehicle seat according to the present invention will be described with reference to the accompanying drawings.

Recliner of a vehicle seat according to an embodiment of the present invention is a plate holder 10, a sector tooth 20, a shaft 30, a cam lever 40, a pole tooth as shown in Figure 3 and 4 50, the cam spring 60, the cover bracket 70 and the sealing member 80, and is produced in a variety of forms according to the type of vehicle and seat, of which the round type (round type) is applied To illustrate.

Meanwhile, the plate holder 10 and the cover bracket 70 form the appearance of the recliner, and the cam lever 40, the pole tooth 50, the cam spring 60, and the sealing member 80 are plate holders 10. ) And the cover bracket 70 is a component installed in the space.

Plate holder (10) is fixed to the seat cushion frame, formed radially protruding on one surface between the rotation center projection (10a) for supporting the pole tooth 50 to rotate, between the rotation center projection (10a) The spring protrusion 10b is provided so that the outer end of the cam spring 6 may be caught in any one part which protrudes every time.

Sector tooth (20) is fixed to the seat back frame, the internal gear 20a is formed along the circumferential direction on the inner circumferential surface opposite the plate holder 10, and inserted into the front step of the plate holder 10 Combined.

On the other hand, the center of the plate holder 10 and the sector tooth 20 is formed with holes through which the shaft 30 is located.

The shaft 30 has a recliner lever which is operated by the occupant for adjusting the angle of the seat back at one end thereof, and the center of the cam lever 40 in the form of a spline hole is coupled to the spline so that the cam lever 40 can be interlocked. It is an axis formed in the form of a projection.

The cam lever 40 is disposed between the plate holder 10 and the sector tooth 20 so that a spline hole is formed at the center thereof so as to be interlocked by the rotation of the shaft 30. The cam is formed to protrude in the same manner as the number of the pole teeth 50 so that the 50 rotates about the center of rotation protrusion 10a.

That is, during rotation of the cam lever 40, the inner surface of the pole tooth 50 moves up and down by the rotation center protrusion 10a while the inner surface of the pole tooth 50 moves up and down, thereby rotating the pole tooth 50. The tooth gear 50a is released or engaged with the internal gear 20a of the sector tooth 20.

Further, a protrusion is formed at one position such that the inner bent portion of the cam spring 60 is caught on one surface of the cam lever 40.

Paul tooth 50 is provided radially on the outside of the cam lever 40, the pole tooth gear 50a for selectively engaging the internal gear 20a of the sector tooth 20 on the outer peripheral surface Is formed is rotated from the rotation center projection (10a) as a starting point when the cam lever 40 rotates.

Furthermore, both sides of the pole tooth 50 are both sides thereof while recessing the sides of the protruding portion between the rotation center protrusions 10a when the pole tooth 50 is separated from the rotation center protrusion 10a by an external force. The male and female coupling to the internal gear 20a of the sector tooth 20 and the pole tooth gear 50a of the pole tooth 50 are continuously provided with a pressing protrusion and a coupling groove to maintain the engaged state.

Cam spring 60 is provided in a vortex form the outer end and the inner end is bent, respectively, the outer bent portion is caught by the spring projection (10b), the inner bent portion is caught by the projection of the cam lever 40, so the angle of the seat back After adjusting the release of the recliner lever to fix the angle of the seat back, the pole tooth 50 is rotated to its original position by the restoring force.

The cover bracket 70 is a part for assembling the plate holder 10 and the sector tooth 20 with each other while surrounding the outer circumferential surface of the plate holder 10 and the sector tooth 20, and the plate holder 10 and the sector tooth. The space between the 20 is maintained in a proper state by the cover bracket 70.

The sealing member 80 has a contact surface with the plate holder 10, the sector tooth 20 and the cam lever 40, which are the inner side in which the shaft 30 is located, and the plate holder 10 and the sector tooth 20, which are outward. They intervene in contact surfaces with each other to form a sealed structure.

That is, the sealing member 80 is provided to maintain the tightness of the gap while maintaining the minimum clearance such as the cam lever 40 and the pole tooth 50, which are the operation parts of the recliner, to the minimum clearance that does not affect the operation. .

At this time, between the opposite surface center side facing the plate holder 10 and the sector tooth 20, and between both side surface central sides of the cam lever 40 interposed between the plate holder 10 and the opposite surface between the sector tooth 20. The bent parts facing the same in the sector tooth 20 direction are respectively formed on the central portion of the plate holder 10 and the cam lever 40 so that the sealing member 80 is provided, among which the bent parts of the cam lever 40 are provided. The cam spring 60 is disposed outward.

And the bent part toward the sector tooth 20 direction is formed in the outer peripheral surface side of the plate holder 10 so that the sealing member 80 is provided on the opposite outer peripheral surface side facing the plate holder 10 and the sector tooth 20, A bent portion directed toward the plate holder 10 is formed on the outer circumferential surface side of the sector tooth 20, and the bent portion of the plate holder 10 and the sector tooth 20 is provided to be simultaneously covered by the cover bracket 70. On the other hand, it is possible to form a stepped portion on the center side of the sector tooth 20 facing the cam lever 40.

Here, the sealing member 80 is described as an example of a grease (Grease) as an example, not limited to this can be replaced by a semi-solid viscous lubricant.

In this case, when the sealing member 80 is grease, the plate holder 10 may be welded to the base bracket (not shown in the drawing) without being directly coupled with the seat cushion frame, depending on the type of seat together with the sealing function. At this time, it becomes solid by welding heat, etc., and can form an oil film, and this oil film can improve a sealing function.

In particular, the grease composition used in the present invention contains a base oil, a thickener (Thickener or Gelling agent) and additives (Performance additives), the content is 55.0 ~ 70.0% by weight of the base oil composed of synthetic hydrocarbon oil, barium compound Soap thickener 20.0 to 30.0% by weight and the olefin-based polymer 5.0 to 10.0% by weight.

At this time, synthetic hydrocarbon oil is used as base oil, which is one of grease composition, and barium compound soap thickener and olefin polymer are added to improve adhesiveness and heat resistance, so that grease is not deformed even after welding process. Does not provide a grease composition.

The preferred content of the base oil used in this invention is 55.0 to 70.0% by weight based on the whole grease composition. At this time, if the base oil content is less than 55.0% by weight, there is no practical use as a grease due to excessively solidified fluidity lowering, if it exceeds 70.0% by weight is too soft, there is a problem of grease caused by the lowered heat resistance and the problem of flowing down is not preferable Can not do it.

In addition, the thickener, which is one of the grease compositions, is a barium composite soap thickener, and the content thereof is preferably in the range of 20.0 to 30.0 wt% based on the total grease composition. If the content is less than 20.0% by weight, the grease is softened and the heat resistance is lowered. On the contrary, if the content is more than 30.0% by weight, the phenomenon is solidified and fluidity is lowered.

In addition, the olefin-based polymer, which is one of the grease compositions, is used to improve adhesiveness and high temperature stability, and it is preferable to use 5.0 to 10.0 wt% with respect to the entire grease composition, and if the content is more than 10.0 wt% When it is used to the further improvement effect can not be expected, if less than 5.0% the adhesiveness and high temperature stability is lowered can not expect the improvement effect.

Therefore, in the recliner of a vehicle seat according to the present invention, when the shaft 30 rotates by operating the recliner lever, the cam lever 40 rotates, and when the cam lever 40 rotates, the fault tooth 50 rotates. As it rotates around the center protrusion 10a, the fault gear 50a engaged with the internal gear 20a of the sector tooth 20 is switched to the state in which the engagement is released.

Then, the sector tooth 20 is in a state capable of rotating with respect to the plate holder 10, and thus the seat back frame coupled with the sector tooth 20 is in a state in which the seat back can rotate. Is to be able to adjust the angle.

When the recliner lever operated is released, the pole tooth 50 rotates in the opposite direction by the restoring force of the cam spring 60, and the internal gear 20a of the pole tooth gear 50a and the sector tooth 20 is rotated. It is re-engaged, which allows the seat back of the vehicle to remain in a state where the angle adjustment is completed.

In addition, when the pole tooth 50 rotates in the opposite direction due to the restoring force of the cam spring 60, the cam lever 40 and the shaft 30 also rotate in the opposite direction together with the restoring force to return to the original state. You are ready for the next action.

On the other hand, the contact surface with the plate holder 10, the sector tooth 20 and the cam lever 40, which are inside the recliner where the shaft 30 is located, and the plate holder 10 and the sector tooth 20, which are outside the recliner, are located. The sealing member 80 intervenes in the contact surface with each other to form a closed structure in the gap while maintaining a minimum gap that does not affect the operation of the operating parts including the cam lever 40, the pole tooth 50, and the like. .

In addition, when the sealing member 80 is grease, the sealing function can be improved by forming an oil film by solidifying grease by heat of welding together with the sealing function.

In the detailed description of the present invention described above with reference to the preferred embodiment of the present invention, the scope of protection of the present invention is not limited to the above embodiment, and those skilled in the art of the present invention It will be understood that various modifications and changes can be made in the present invention without departing from the spirit and scope of the invention.

10: plate holder 20: sector tooth
30: shaft 40: cam lever
50: Paul Tooth 60: cam spring
70: cover bracket 80: sealing member

Claims (7)

A plate holder coupled to the seat cushion frame and provided with rotation center protrusions at equal intervals on one surface thereof;
A sector tooth coupled to the seat back frame and having an internal gear formed along an circumferential direction on an inner circumferential surface thereof;
A cam lever disposed between the plate holder and the sector tooth and interlocked by rotation of a shaft coupled to the recliner lever at one end thereof;
A pole tooth radially provided on an outer side of the cam lever, and a pole tooth gear for selectively engaging the internal gear of the sector tooth is formed on an outer circumferential surface thereof so as to rotate around the center of rotation; And
And a sealing member interposed in a contact surface gap formed by contacting at least two or more of a plate holder, a sector tooth and a cam lever to form a sealed structure.
The method of claim 1,
The sealing member is provided between the central portion of the plate holder and the sector tooth and the central portion of the cam lever facing the same in the sector tooth direction so that a sealing member is provided between the central portion of the cam lever interposed between the opposite surface. Each of the bent portions is formed, the recliner of the vehicle seat, characterized in that the cam spring is disposed outside the bent portion of the cam lever.
The method of claim 1,
On the outer circumferential surface side of the plate holder is formed a bent portion directed in the sector tooth direction so that the sealing member is provided on the outer circumferential surface side of the opposing plate holder and the sector tooth, a bent portion is formed on the outer peripheral surface side of the sector tooth toward the plate holder direction, And a bent portion of the plate holder and the sector tooth at the same time by a cover bracket.
The method according to claim 2 or 3,
A recliner of a vehicle seat, wherein the sealing member is grease.
According to claim 4,
A grease is a recliner for a vehicle seat, characterized in that an oil film is formed by solidification with heat.
The method of claim 4, wherein
The grease composition comprises a base oil composed of synthetic hydrocarbon oil, a barium compound soap thickener and an olefin polymer additive.
The method of claim 6,
The grease composition is a recliner of a vehicle seat comprising 55.0 to 70.0% by weight of base oil, 20.0 to 30.0% by weight of a barium compound soap thickener and 5.0 to 10.0% by weight of an olefinic polymer.

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