KR100445366B1 - Foldable Armrest and Vehicular Seat Apparatus Having The Same - Google Patents

Abstract

The present invention relates to a folding armrest mounted on a seat frame and a vehicle seat apparatus provided with the same, wherein the folding armrest according to the present invention is a use position for use of the armrest and a diesel position extended by a predetermined angle from the use position. And an arm frame rotating between the retracted positions folded from the use positions. A hinge arm supporting one end of the arm frame, the hinge arm having a first contact portion corresponding to the use position, a second contact portion corresponding to the via position, and a third contact portion corresponding to the withdrawn position; Is engaged with the first contact portion at the use position to maintain the arm frame at the use position, the arm frame rotates by the second contact portion when rotating between the use position and the via position, and the arm frame is rotated. A cam that rotates by the first contact portion when rotated from the diesel position to the withdrawn position and is held by the third contact portion at the withdrawn position to maintain the arm frame at the withdrawn position; A support frame hinged to the hinge arm and the cam and fixed to the seat frame; It is provided between the cam and the support frame, characterized in that it comprises a cam spring for elastically supporting the cam. Thereby, the design of the seat can be varied, the armrest can be easily and safely rotated, and the width of the backrest can be widened to improve the comfort of the seated occupant.

Description

Foldable Armrest and Vehicular Seat Apparatus Having The Same}

The present invention relates to a folding armrest and a vehicle seat apparatus having the same.

Vehicles that transport passengers, such as railroad cars, airplanes, buses, and automobiles, are provided with seat sheets for vehicles to allow passengers to sit and travel. Such a vehicle seat device is generally equipped with an armrest, there is a fixed type and the folding is not folding the armrest. Recently, many folding armrests have been adopted to fold the armrests when the occupants need them for the convenience of passengers.

As shown in FIG. 6, the conventional folding armrest 103 and the vehicle seat apparatus 101 having the same have a seat cushion 105, a seat frame 107 supporting the seat cushion 105, and a seated person. It has a backrest 109 that can lean on its back and a folding armrest 103 that allows a seated person to wear their arms. On the other hand, the armrest 103 is coupled to one side of the upper end of the seat frame 107 by a hinge shaft 103a, the armrest 103 has a structure that can rotate to the side of the backrest 109. As a result, the seated person can rotate the armrest to the side of the backrest 109, thereby allowing the seat cushion 105 to be seated or seated.

However, in such a conventional vehicle seat apparatus, the backrest should be designed so as not to affect the rotation radius of the armrest body by rotating the armrest body to the side of the backrest. The width is narrowed, there is a problem that the comfort of the seated person is lowered. In addition, when rotating the armrest body, the seated person should rotate the armrest body over the shoulder in front of the upper body with the arm on the opposite side of the armrest body, so that the seated person is inconvenient to rotate the armrest body, and the safety accidents such as pinching fingers during armrest operation. There is a problem that there is a risk.

Accordingly, an object of the present invention, the seat can be varied, the armrest can be easily and safely rotated operation, widening the width of the backrest to improve the comfort of the seated seat and a vehicle seat having the same To provide a device.

1 is a perspective view of a state of use of the vehicle seat apparatus with a folding armrest according to an embodiment of the present invention,

2 is an exploded perspective view of the folding armrest according to an embodiment of the present invention,

3 to 5 is a cross-sectional view showing the operating state of the folding armrest according to the invention,

Figure 6 is an operation of the folding armrest of the vehicular seat device with a conventional folding armrest.

* Explanation of symbols for the main parts of the drawings

1: vehicle seat device 10: arm frame

20: hinge arm 21: hinge bolt

22: first through hole 23a: guide groove

23b: locking portion 23c: depression

23d: sliding protrusion 25: stopper

30: cam 31: hinge pin

34: second through hole 36: cam pin through hole

40: support frame 42: the first through-hole

50: cam spring 51: cam pin

53: spring retaining pin

In order to achieve the above object, the present invention, in the folding armrest mounted on the seat frame, the use position for use of the armrest, the position via the unfolded by a predetermined angle from the use position, the retracted position folded from the use position An arm frame rotating between the arm frames; A hinge arm supporting one end of the arm frame, the hinge arm having a first contact portion corresponding to the use position, a second contact portion corresponding to the via position, and a third contact portion corresponding to the withdrawn position; Is engaged with the first contact portion at the use position to maintain the arm frame at the use position, the arm frame rotates by the second contact portion when rotating between the use position and the via position, and the arm frame is rotated. A cam that rotates by the first contact portion when rotated from the diesel position to the withdrawn position and is held by the third contact portion at the withdrawn position to maintain the arm frame at the withdrawn position; A support frame hinged to the hinge arm and the cam and fixed to the seat frame; It is achieved by a folding armrest provided between the cam and the support frame, the cam spring elastically supporting the cam.

Here, the first contact portion is a engaging portion for engaging the cam in the use position to secure the arm frame to the use position, the second contact portion is sliding to rotate the cam by pushing one end of the cam in the via position The third contact portion is a guide groove for accommodating the cam in the retracted position to maintain the arm frame in the retracted position, wherein the cam is provided at one end of the cam to engage the engaging portion at the use position. Hanging accommodation is provided.

In addition, the hinge arm is preferably provided with a stopper for stopping the rotation of the arm frame at the transit position.

And a cam pin for coupling one end of the cam spring to the cam, and a spring fixing pin for coupling the other end of the cam spring to the support frame; The cam is formed with a cam pin through hole through which the cam pin passes, and the support frame preferably has a fixed pin through hole through which the spring fixing pin passes.

On the other hand, it further comprises a hinge arm pivot shaft rotatably coupled to the first through-hole receiving hole formed on one side of the support frame, the hinge arm forms a first through hole through which the hinge arm pivot shaft passes. The cam rotation shaft may further include a cam rotation shaft rotatably coupled to the second through hole formed on the other side of the support frame, and the cam may form a second through hole through which the cam rotation shaft penetrates.

And, in order to achieve the above object, the present invention, in the vehicle seat apparatus having a folding armrest, a seat frame on which the folding armrest is mounted, the folding armrest, the use position for use of the armrest, and the use An arm frame that rotates between a gas oil position extended by a predetermined angle from the position and a retracted position folded from the use position; A hinge arm supporting one end of the arm frame, the hinge arm having a first contact portion corresponding to the use position, a second contact portion corresponding to the via position, and a third contact portion corresponding to the withdrawn position; Is engaged with the first contact portion at the use position to maintain the arm frame at the use position, the arm frame rotates by the second contact portion when rotating between the use position and the via position, and the arm frame is rotated. A cam that rotates by the first contact portion when rotated from the diesel position to the withdrawn position and is held by the third contact portion at the withdrawn position to maintain the arm frame at the withdrawn position; A support frame hinged to the hinge arm and the cam and fixed to the seat frame; The cam seat device is provided between the cam and the support frame, and comprises a cam spring for elastically supporting the cam.

Here, the first contact portion is a engaging portion for engaging the cam in the use position to secure the arm frame to the use position, the second contact portion is sliding to rotate the cam by pushing one end of the cam in the via position The third contact portion is a guide groove for accommodating the cam in the retracted position to maintain the arm frame in the retracted position, wherein the cam is provided at one end of the cam to engage the engaging portion at the use position. Hanging accommodation is provided.

In addition, the hinge arm is preferably provided with a stopper for stopping the rotation of the arm frame at the transit position.

And a cam pin for coupling one end of the cam spring to the cam, and a spring fixing pin for coupling the other end of the cam spring to the support frame; The cam is formed with a cam pin through hole through which the cam pin passes, and the support frame preferably has a fixed pin through hole through which the spring fixing pin passes.

On the other hand, it further comprises a hinge arm pivot shaft rotatably coupled to the first through-hole receiving hole formed on one side of the support frame, the hinge arm forms a first through hole through which the hinge arm pivot shaft passes. The cam rotation shaft may further include a cam rotation shaft rotatably coupled to the second through hole formed on the other side of the support frame, and the cam may form a second through hole through which the cam rotation shaft penetrates.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a state of use of the vehicle seat apparatus with a folding armrest according to an embodiment of the present invention. As shown, the vehicle seat apparatus 1 includes a seat cushion 5, a seat frame 7 supporting the seat cushion 5, a backrest 9 on which a seated person can lean, and a seated person. It has armrests (3,4) that can hang arms. Armrests (3,4) is divided into a fixed armrest (4) is installed on both sides and a folding armrest (3) is installed in the center.

The seat frame 7 not only maintains the skeleton of the vehicular seat device 1, but is also fixed to a vehicle such as a railroad car or an automobile to fix the vehicular seat device 1 to the vehicle, and the seated person is seated on the seat cushion 5. And lean on the back 9. Foldable armrest (3) is typically placed in the use position located in the transverse direction of the seated body so that the occupant can use the armrest (3), but the use of the armrest (3) such as the seater wants to use a wider space If you don't want it, you can fold it down.

Figure 2 is an exploded perspective view of the folding armrest according to an embodiment of the present invention, as shown in this, the folding armrest 3 is approximately "a" shaped arm frame 10 and one end of the arm frame 10 The hinge arm 20 for supporting the rotation, the arm frame 10 is in contact with the hinge arm 20 when rotated, the cam 30 rotates in one direction, and the seat frame 7 is fixed to the armrest 3 It has a supporting frame 40 for supporting it.

The arm frame 10 having a shape of “a” is composed of a plastic molded article which is coupled to the arm frame body and the outside of the arm frame body to give a soft touch when the user raises the arm on the armrest 3. The combination between the arm frame body and the plastic molded article is fixed by screws (not shown).

The hinge arm 20 is coupled to the lower end of the "a" shaped arm frame 10 to support the arm frame 10 in rotation. In the central portion of the hinge arm 20, a first through hole 22 through which a hinge bolt 21, which is a hinge arm pivot, penetrates is formed. The hinge bolt 21 is coupled to the hinge arm 20 so as to be rotatably coupled to the support frame 40 so that the arm frame 10 is positioned between the use position, the transit position and the retracted position around the hinge bolt 21. Will be rotated.

In addition, the hinge arm 20 has a substantially circular shape, and the cutouts 23 are formed along the edges of the hinge arms 20 along the edges on the opposite side of the arm frame 10 engaging side. The cutout portion 23 includes a locking portion 23b, which is a first contact portion engaged with the cam 30 at a use position, and a sliding protrusion 23d, which is a second contact portion, which contacts the cam 30 at a diesel position. It is composed of a guide groove (23a) which is a third contact portion in contact with the cam 30 in the retracted position, the sliding projection (23d) is provided from the inside of the hinge arm 20, the circumference in the adjacent region of the sliding projection (23d) Guide grooves 23a are formed at predetermined widths along the circumferential direction in the engaging portions 23b protruding again through the recessed portions 23c recessed in a predetermined width along the direction, and adjacent regions of the locking portions 23b. do. As a result, the guide groove 23a accommodates the cam 30 in the retracted position where the armrest 3 is folded down to maintain the arm frame 10 in the retracted position, and the engaging portion 23b is the seat arm of the armrest 3. It also serves to maintain the arm frame 10 in the use position by engaging the cam 30 in the use position using the) and the upper rear of the cam 30 when the arm frame 10 rotates from the via position to the retracted position. It also pushes downwards. Further, when the arm frame 10 is to be rotated from the retracted position to the use position or when the arm frame 10 is to be rotated from the used position to the retracted position, that is, when the arm frame 10 is rotated between the used position and the via position, the sliding protrusion 23d is The lower end of the cam 30 is pushed to rotate.

On the other hand, the stopper 25 which protrudes in the distal end part of the hinge arm 20 in the folding direction of the arm frame 10 is provided. The stopper 25 stops the rotation of the arm frame 10 at the transit position of the arm frame 10. Therefore, since the position of the arm frame 10 is unfolded from the use position according to the position of the stopper 25 is set, the seated person pulls upward until the arm frame 10 stops the rotation to reach the position via oil.

The cam 30 has an elliptical shape having a different radius of curvature, and a hook receiving portion 32 cut out in a predetermined width from an outer circumferential surface on the upper side of the cam 30 opposite to the locking portion 23b of the hinge arm 20 described above. ) Is formed. The catching portion 32 is engaged with the catching portion 23b of the hinge arm 20 at the use position of the armrest 3 to maintain the arm frame 10 at the use position. In addition, a second through hole 34 through which the hinge pin 31, which is a cam rotation shaft, penetrates is formed in the central region of the cam 30. The cam 30 has a cam pin through hole 36 through which a cam pin 51 for coupling one end of the cam spring 50 to be described later to the cam 30 passes.

The support frame 40 which is fixed to the seat frame 7 and supports the armrest 3 has a pair of hinge plates 41 opposed to each other at a predetermined distance in the vertical direction, and is disposed in the horizontal direction so that the seat frame ( It consists of a base plate 43 fixed to 7).

A first through hole 42 through which the hinge bolt 21, which is a hinge arm pivot, penetrates is formed at the upper end of the hinge plate 41, and the hinge arm 20 is positioned between the pair of hinge plates 41. Then, the hinge guide bush 29 is inserted into the first through hole 42, and the hinge bolt 21, which is a hinge arm pivot, is penetrated and coupled to the first through hole 22 of the hinge arm 20. At the same time, the hinge guide bush 29 is rotatably coupled. At this time, the hinge bolt 21 is fixed with a nut 27, the hinge bolt 21 is a hinge axis in the armrest (3) operation. Similarly, a second through hole 44 through which the hinge pin 31, which is a cam pivot, penetrates is formed at the lower end of the hinge plate 41, and the cam 30 is positioned between the pair of hinge plates 41. The cam guide bush 38 is inserted into the second through hole 44, and the cam guide shaft penetrates the hinge pin 31 through the second through hole 34 of the cam 30. Rotably couple to bush 38. In addition, the hinge plate 41 is provided with a fixing pin through-hole 45 through which a spring fixing pin 53 through which the other end of the cam spring 50 to be described later is coupled to the hinge plate 41.

On the other hand, the folding armrest 3 according to an embodiment of the present invention is provided between the cam 30 and the support frame 40, and has a cam spring 50 for elastically supporting the cam 30. One end of the cam spring 50 is coupled to the cam 30 by a cam pin 51, and the other end of the cam spring 50 is coupled to the hinge plate 41 by a spring fixing pin 53. As a result, when the armrest 3 rotates, the cam 30 that rotates about the hinge pin 31 maintains a stable position by the cam spring 50.

By this configuration, the process of operating the folding armrest (3) is as follows.

The foldable armrest 3 rotates the arm frame 10 at a position where the user can put his arm, a position via a gas that is extended upward by a predetermined angle from the position of use, and a retracted position folded down from the position of use. Therefore, when the armrest 3 is to be folded in the use position, the seated person pulls the arm frame 10 upward by a predetermined angle to reach the transit position, and then folds the arm frame 10 to the retracted position. In the same manner, when the armrest 3 is to be used in the retracted position where the armrest 3 is folded, the arm frame 10 is used when the arm frame 10 in the retracted position is rotated to the via position and then folded down. Maintained in position. Therefore, when the seated person pulls up the arm frame 10 until the rotation stops, the seated position is reached by the seated position, and when the seated position is lowered by the seated position, the seated person is easily placed in the use position or the retracted position. 3) can be folded and unfolded.

Hereinafter, such an operation state will be described in detail structurally with reference to FIGS. 3 to 5.

As shown in FIG. 3, when the user wants to fold the armrest 3 in a standard state where the user can put his arm down, when the armrest 3 is rotated backward, the locking portion 23b of the hinge arm 20 is rotated. ), The cam 30 engaged with the cam comes out from the locking portion 23b, and when the sliding protrusion 23d of the hinge arm 20 pushes the lower end of the cam 30 forward, the cam 30 is hinge pin 31. Rotate in a counterclockwise direction, and at this time, the cam spring 50 pushes the cam 30 counterclockwise by the elastic force, so that the operation of the armrest 3 is released as shown in FIG. Becomes In addition, when the armrest 3 is rotated backward, when the armrest 3 is rotated at a predetermined angle, the stopper 25 of the hinge arm 20 is caught by the end of the base plate 43, and the armrest 3 is further removed. It will not rotate anymore.

Then, when the armrest 3 in the released state is folded forward, the locking portion 23b of the hinge arm 20 pushes the upper rear of the cam 30 in the released state downward, and the cam 30 is hinged. It rotates clockwise about the pin 31, the cam 30 slides along the guide groove 23a of the hinge arm 20, and is accommodated in the guide groove 23a, as shown in FIG. The armrest 3 is folded down.

In addition, if you want to move the armrest (3) in the folded state back to the armrest position in the standard state, if you raise the folded armrest (3) as it is, the cam 30 moves along the guide groove (23a) and then hinge arm (20) While hanging with a 'click' sound at the locking portion 23b of the cam 30, the cam 30 is engaged with the locking portion 23b of the hinge arm 20 so that the armrest 3 maintains the standard state as shown in FIG. Done.

As a result, when the armrest 3 is operated, the armrest 3 rotates about the hinge bolt 21, and the cam 30 rotates about the hinge pin 31 by the cam spring 50. The position is fixed, and the cam 30 is engaged and released by the hinge arm 20 due to the shape interference between the cam 30 and the hinge arm 20, and the use position and withdrawal position of the armrest 3 are repeatedly repeated. You can change it.

As described above, the hinge arm 20 for rotatably supporting one end of the arm frame 10 and the hinge arm 20 come into contact with the hinge arm 20 so that the bite and the bite are released when the arm frame 10 rotates. The cam 30 that rotates with rotation and the cam spring 50 that elastically supports the cam 30 are configured in the folding armrest 3 to interfere with the backrest 9 of the seat due to the rotation of the armrest 3. This does not occur, the seat design can be varied, the armrest 3 can be easily and safely rotated, and the width of the backrest 9 can be widened to improve the comfort of the seated person.

In the above-described embodiment, the hinge arm 20 is coupled to the lower end of the arm frame 10, but the hinge arm 20 may be manufactured integrally with the arm frame 10.

As described above, according to the present invention, the design of the seat can be varied, the armrest can be easily and safely rotated, and the armrest is provided with a folding armrest that can improve the comfort of the seater by widening the width of the backrest. One vehicle seat apparatus is provided.

Claims (12)

In the folding armrest mounted on the seat frame, An arm frame that rotates between a use position for use of the armrest, a diesel position extended by a predetermined angle from the use position, and a retracted position folded from the use position; A hinge arm supporting one end of the arm frame, the hinge arm having a first contact portion corresponding to the use position, a second contact portion corresponding to the via position, and a third contact portion corresponding to the withdrawn position; Is engaged with the first contact portion at the use position to maintain the arm frame at the use position, the arm frame rotates by the second contact portion when rotating between the use position and the via position, and the arm frame is rotated. A cam that rotates by the first contact portion when rotated from the diesel position to the withdrawn position and is held by the third contact portion at the withdrawn position to maintain the arm frame at the withdrawn position; A support frame hinged to the hinge arm and the cam and fixed to the seat frame; A folding armrest provided between the cam and the support frame, the cam spring elastically supporting the cam. The method of claim 1, The first contact portion is a locking portion for engaging the cam at the use position to fix the arm frame to the use position, and the second contact portion is a sliding protrusion for rotating the cam by pushing one end of the cam at the via position. The third contact portion is a guide groove for receiving the cam in the retracted position to maintain the arm frame in the retracted position. The cam has a folding armrest, characterized in that the hook receiving portion is provided at one end of the cam to engage with the catch in the use position. The method of claim 2, The hinge arm further comprises a stopper for stopping the rotation of the arm frame in the transverse position. The method of claim 1, A cam pin coupling one end of the cam spring to the cam; It further comprises a spring fixing pin for coupling the other end of the cam spring to the support frame; The cam is formed with a cam pin through hole through which the cam pin penetrates, and the support frame has a folding armrest having a fixing pin through hole through which the spring fixing pin penetrates. The method of claim 1, It further comprises a hinge arm pivot shaft rotatably coupled to the first through hole formed on one side of the support frame, The hinge arm has a folding armrest, characterized in that the first through-hole is formed through the hinge arm pivot. The method according to claim 1 or 5, Further comprising a cam rotating shaft rotatably coupled to the second through hole formed on the other side of the support frame, The cam arm has a folding armrest, characterized in that the second through hole through which the cam rotation shaft penetrates. A vehicle seat apparatus having a folding armrest and a seat frame to which the folding armrest is mounted, The folding armrest, An arm frame that rotates between a use position for use of the armrest, a diesel position extended by a predetermined angle from the use position, and a retracted position folded from the use position; A hinge arm supporting one end of the arm frame, the hinge arm having a first contact portion corresponding to the use position, a second contact portion corresponding to the via position, and a third contact portion corresponding to the withdrawn position; Is engaged with the first contact portion at the use position to maintain the arm frame at the use position, the arm frame rotates by the second contact portion when rotating between the use position and the via position, and the arm frame is rotated. A cam that rotates by the first contact portion when rotated from the diesel position to the withdrawn position and is held by the third contact portion at the withdrawn position to maintain the arm frame at the withdrawn position; A support frame hinged to the hinge arm and the cam and fixed to the seat frame; And a cam spring provided between the cam and the support frame to elastically support the cam. The method of claim 7, wherein The first contact portion is a locking portion for engaging the cam at the use position to fix the arm frame to the use position, and the second contact portion is a sliding protrusion for rotating the cam by pushing one end of the cam at the via position. The third contact portion is a guide groove for receiving the cam in the retracted position to maintain the arm frame in the retracted position. The cam seat device is characterized in that the cam receiving portion is provided at one end of the cam to engage the engaging portion in the use position. The method of claim 8, The hinge arm further comprises a stopper for stopping the rotation of the arm frame at the transit position. The method of claim 8, A cam pin coupling one end of the cam spring to the cam; It further comprises a spring fixing pin for coupling the other end of the cam spring to the support frame; The cam seat is formed in the cam through the cam pin penetrating hole, the support frame is a vehicle seat device, characterized in that the fixing pin through hole is formed through the spring fixing pin. The method of claim 7, wherein It further comprises a hinge arm pivot shaft rotatably coupled to the first through hole formed on one side of the support frame, And a first through hole through which the hinge arm pivot shaft penetrates the hinge arm. The method according to claim 7 or 11, wherein Further comprising a cam rotating shaft rotatably coupled to the second through hole formed on the other side of the support frame, The cam seat device, characterized in that the cam is formed with a second through hole through which the cam rotation shaft passes.