JP2001197958A - Vehicle seat having armrest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a vehicle seat having an armrest wherein the switching operability of the armrest and the usability can be improved by a comparatively simple structure. SOLUTION: The armrest 4 is turnably installed on the side surface 3c of a seat back 3 through an attaching shaft 5, and the vehicle seat having the armrest can be turn-switched between a standing location when not being used wherein the armrest 4 is arranged in the vertical direction of the side surface 3c, and a using location wherein the armrest 4 is project-arranged forward from the seat back 3. In such a vehicle seat having the armrest, the side surface 3c of the seat back 3, wherein the armrest 4 is arranged, gradually increases the lacking amount from the front surface 3a to the back surface 3b, and a notched section 6 corresponding with the lacking amount is formed. Then, the armrest 4 has a cross-sectional shape corresponding with the notched section 6. At the standing location, the corresponding side surface section and the corresponding back surface section of the seat back 3 are integrally formed. Also, when the seat back 3 is turned from the standing location to the using location by a moving guide means 12 provided on the attaching shaft 5, the armrest 4 is laterally moved to the corresponding side surface 3c accompanying the turning, while extending from the notched section 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an armrest which is mounted on a side portion of a seat back and has an armrest which can be switched between an upright position disposed along the side portion and a use position protruding forward. The present invention relates to a vehicle seat.

[0002]

2. Description of the Related Art FIG. 5 schematically shows a conventional example of a vehicle seat with an armrest. This seat body 51 is
It consists of a seat cushion 52 and a seat back 53,
An armrest 54 is provided on the side 53a of the seat back 53. The left and right widths of the seat cushion 52 and the seat back 53 are designed to have the same width. The armrest 54 is rotatably assembled by approximately 90 degrees via a mounting shaft 55 projecting laterally from a corresponding side 53a of the seat back 53, and is provided in a standing position (see FIG. 5), and a use position (shown by a dashed line in FIG. 5) that projects forward of the seat back 53 and is tilted substantially horizontally. As shown in the front view of FIG. 5B, the width of the seat body 51 is larger than the width W1 of the armrest 54 by the width W2 of the armrest 54, as compared with the width W1 of the armrest 54, as compared to the normal width without the armrest. Just get bigger.

[0003]

In the above-mentioned conventional vehicle seat with armrest, the width dimension (W) of the seat body 51 is determined.
1 + W2) becomes larger corresponding to the armrest 54, and therefore, for example, a specification in which the seat body 51 disposed in the front and rear of the vehicle body is rotatably opposed, a specification in which the seat body 51 is arranged side by side, and a gap between the seat bodies 51 is desired to be a passage for an occupant, and the like. In this case, the armrest 54 may interfere or hinder the installation, which limits the installation structure.

[0004] As an example of this measure, for example, the width of the seat back is made smaller with respect to the seat cushion in correspondence with the armrest, and the armrest forms a part of the seatback holding surface at the upright position when not in use. There is also one that is arranged to protrude above the seat cushion. However, in this structure, when the armrest is used, the width of the seat back is reduced, and the sitting comfort is deteriorated.

Another conventional structure is disclosed in, for example,
As described in JP-A-317139 and the like, there is also a vehicle seat in which a recess for an armrest is provided on a side portion of a seat back so that the armrest is buried in the recess when not in use. However, in this structure, the thickness of the seat back is restricted, and the armrest is placed in a concave portion provided in a limited space on the side, so that the armrest width becomes small and the arm holding property and feel cannot be satisfied. In addition, when the armrest is used, the structure is complicated and the operability is deteriorated because the armrest is once pulled out to the outside in the lateral direction and then rotated forward.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat with an armrest which has a relatively simple structure and is optimal, which eliminates the above problems. Other objects will be clarified in the following description.

[0007]

According to the present invention, an armrest 4 is rotatably mounted on a side surface 3c of a seat back 3 via a mounting shaft 5 as shown in the drawings. In a vehicle seat with an armrest, which can be switched between an upright position at the time of non-use arranged along the up-down direction of the side surface 3c and a use position projected forward of the seatback 3, Is
The side face 3c on which the armrest 4 is arranged gradually increases in the missing amount from the front surface 3a of the seat back toward the back surface 3c, and forms a cutout 6 corresponding to the missing amount. The seat back 3 has a corresponding cross-sectional shape, the corresponding side surface portion and the corresponding back surface portion of the seat back 3 are integrally formed at the standing position, and the moving guide means 12 provided on the mounting shaft 5 moves the seat back 3 from the standing position. When it is rotated toward the use position, it is configured to move laterally with respect to the corresponding side surface 3c while protruding from the notch portion 6 with this rotation.

This seat structure is of the type in which the armrest 4 is assembled to the side portion 3c of the seatback 3, on the premise that the armrest 4 and the seatback 3 both satisfy the respective holding properties, and improve the armrest switching operability. And the seat body 1 when the armrest is not used
Can be set almost the same as when no armrest is provided. In other words, the notch 6 gradually increases in the amount of lack from the front surface 3a of the seat back toward the back surface 3b, so that the armless 4 accommodated integrally forms the corresponding side surface portion and the corresponding rear surface portion of the seat back 3. Is provided. The armrest 4 is rotated toward the front of the seatback 3 by the movement guide means 12 of the mounting shaft 5 at the time of use. Moved sideways. As described above, the armrest switching operation is performed by the continuous rotation operation by the movement guide means 12 when switching from the use position to the standing position and from the standing position to the use position, so that the operability is excellent. Further, since the seat back 3 is maintained at substantially the same width as the case where the front surface 3a, which is the holding surface, does not have an armrest, even if the armrest 4 is disposed in the standing position or the use position, the seat back Can always be maintained in an optimal state. At the same time, when the armrest is not used, the armrest 4 fits into the notch 6, so that the width of the seat body 1 is not increased, and the installation is not restricted as in the conventional structure.

The present invention described above is more preferably embodied as follows. First, the armrest 4 has a substantially triangular cross section, and the cutout 6 is formed in a storage space corresponding to the armrest 4. In this structure, for example, a continuous switching operability of the armrest 4 can be easily ensured without sacrificing the width W1 of the seat back 3 or increasing the width of the seat body 1 for an armrest having a substantially rectangular cross section. Become. Second
The mounting shaft 5 includes a first shaft member 9 fixed to the armrest 4 and a second shaft member 10 fixed to the seat back 3.
The two shaft members 9 and 10 are rotatably and slidably inserted and engaged with each other while being attracted to each other by the urging means, and the movement guide means 12 is connected to the both shaft members 9 and 10. The armrest 4 includes a cam groove 13 provided and a pin 14 engaged with the cam groove 13, and is moved along the cam groove 13 when the armrest 4 is rotated together with the first shaft member 9. This structure has an advantage that the movement guide means 12 can be easily realized. Further, since the first shaft member 9 and the second shaft member 10 are urged in the direction in which the first shaft member 9 and the second shaft member 10 are attracted by the urging means 11, rattling or the like generated between the two shaft members 9 and 10 is easily eliminated. Is done.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a vehicle seat with an armrest according to the embodiment. this house,
FIG. 1 schematically shows the entire configuration of the sheet, wherein FIG. 1A is an external view and FIG. 1B is a top view of a main part. 2A and 2B schematically show the configuration of the armrest mounting portion, wherein FIG. 2A is a configuration diagram of the mounting shaft portion, and FIG. 2B is a cross-sectional view taken along line AA of FIG. FIGS. 3 (a) and 3 (b) are side and front views in a state where the armrest is arranged at a standing position when not in use, and FIGS.
(A), (b) is a side view and a front view in a state where an armrest is arranged at a use position.

This vehicle seat comprises a seat cushion 2 having a seat body 1 as a seat, a seat back 3 as a backrest, and an armrest 4, and the seat cushion 2 slides on a vehicle floor (not shown). The armrest 4 is attached to the corresponding side 3c of the seat back 3 by using the mounting shaft 5,
It is the same as the prior art in that it is assembled so as to be able to switch between a standing position that stands up when not in use and a use position that is disposed substantially horizontally in front of the seat back 3. The points of improvement are the shape of the seat back 3 and the armrest 4 and the movement guide means 12 for the armrest 4. Therefore, in the following description, the improvement will be described in detail.

The basic structure of the seat back 3 is similar to that of the related art, in which a buffer pad material is held on a main frame and an auxiliary frame 7, and
Although it is configured to be covered with a decorative skin, it is formed as follows in appearance. That is, the seat back 3
The armrest 4 has a front surface 3a, which is a holding surface, designed to have a width W1 substantially equal to that of the seat cushion 2.
Is formed as a cut-out portion 6 with one side missing. The notch 6 has a size capable of integrally storing the entire armrest 4, and the amount of the notch gradually increases from the front surface 3 a toward the back surface 3 c with respect to the other side surface 3 d.
The corresponding side surface 3c is specified by being formed as a substantially inclined surface or a slightly curved inclined surface corresponding to the missing amount. In other words, the notch 6 has a horizontal sectional shape of the armrest 4.
It has a substantially triangular shape corresponding to the cross-sectional shape of (1), and has a space in which the armrest 4 can be integrally disposed (hereinafter, referred to as a “triangular space”). Further, the upper end of the notch 6 is provided to be open to the upper end of the seat back 3. And in this seat back 3, since the notch 6 gradually increases from the front surface 3a toward the back surface 3c,
When viewed from the front side, it is visually observed as a shape that does not differ from the normal seat back 3 at all. In this embodiment, the lower end of the notch 6 is formed as a corresponding part of the seat back 3. However, the notch 6 is provided at the lower end similarly to the upper end by setting the height position of the mounting shaft 5. There is also.

The armrest 4 has a structure in which a buffer pad material is held on a frame 8 and is covered with a decorative skin, and is formed as follows in appearance. That is, the armrest 4 has a substantially triangular prism shape having a horizontal cross-section substantially equal to the above-mentioned triangular space, and at the upright position in FIGS. 1 and 3, the inside of the triangular space of the notch 6 is almost completely filled. The substantially triangular prism-shaped corresponding surface 4c abuts against the inclined corresponding side surface 3c, and the other approximately triangular prism-shaped surfaces 4a and 4b are designed so as to integrally form the corresponding side surface portion and the corresponding back surface portion of the seat back 3. I have.

As shown in FIG. 2, the mounting shaft 5 includes a first shaft member 9 fixed to the frame 8 of the armrest 4 and a second shaft member 10 fixed to the auxiliary frame 7 of the seat back 3. A coil spring 11 for pulling the two shaft members 9 and 10 toward each other, and a movement guide means 12.

The first shaft member 9 is made of pipe steel, one end of which is welded and fixed to the frame 8, and the other end of which is a free end. The second shaft member 10 is a pipe steel material, one end of which is welded and fixed to the auxiliary frame 7, and the other end of which is a free end. The two shaft members 9 and 10 are set so that the second shaft member is inserted into the inner diameter of the first shaft member 9.
0 is slidably and rotatably inserted into the first shaft member 9. A movement guide means 12 is formed between the first shaft member 9 and the second shaft member 10. The movement guide means 12 includes an elongated cam groove 13 provided on the peripheral surface of the second shaft member 9 and a cam groove 1 protruded from the peripheral surface of the first shaft member.
3 and a pin 14 that extends and engages the inside. The cam groove 13 is provided in an arc shape around the second shaft member 10, and determines the rotation locus of the armrest 4. That is,
The mounting shaft 5 is configured such that the first shaft member 9 is fixed to the second shaft member 1.
When rotated with respect to 0, the first shaft member 9 rotates while moving in the horizontal and horizontal direction with respect to the second shaft member 10 by the guide action of the cam groove 13 and the pin 14. The amount of rotation is regulated by the pin 14 hitting the end of the cam groove 13 and is approximately 90 degrees up and down, that is, the armrest 4.
Is set to the amount that can be switched between the standing position and the use position.

The coil spring 11 is disposed inside the first shaft member 9 and the second shaft member 10 and has one end 11 thereof.
a side is hooked on the locking portion 15 of the frame 8 and the other end 11
The b side is hooked on the locking portion 16 of the auxiliary frame 7. The coil spring 11 applies a predetermined tension between the auxiliary frame 7 and the frame 8, thereby pulling the two shaft members 9 and 10 together, and applying a pressing force between the cam groove 13 and the pin 14. This pressing force prevents rattling and the like.

Next, the operation of the armrest 4 in the seat body 1 will be described. First, armrest 4
When it is not used as in FIGS. 1 and 3, it is turned into the notch 6 with the mounting shaft 5 as a fulcrum from the use position in FIG. 4, and the whole is erected along the corresponding side 3 c of the seat back 3. . In relation to the movement guide means 12, when the armrest 4 shown in FIG. 4 is rotated to the upright position side, the pin 14 and the cam groove 13 guide the pins 14 and the cam grooves 13 from the solid line position in FIG. Seat back 3 as shown by the dashed line in FIG.
It is moved to the side and stored in a state where the notch 6 of the triangular space is filled. In this stored state, when viewed from the front, FIG.
As shown in (b), the armrest 4 is hidden behind the front surface 3a of the seat back 3 and cannot be seen. Depending on the width W2 of the armrest 4, a part of the armrest 4 may be visible from the corresponding side of the seat back 3. In that case, too, most of the armrest 4 cannot be seen from the front side. Therefore, in this structure,
Since the armrest 4 is accommodated in the substantially width dimension W1 of the seat back 3, even in a specification in which, for example, the seat body 1 is arranged in front and rear, and is rotated and opposed to each other, there is no possibility of interference as in the related art.

When the armrest 4 is switched to the use position, when the armrest 4 is turned downward, the first shaft member 9 is also turned integrally, and the first shaft member 9 is moved by the movement guide means 12. While being laterally moved away from the corresponding side surface 3c of the seat back 3, it is disposed at a use position where it protrudes forward from the corresponding side edge of the front surface 3a and becomes substantially horizontal. Therefore, in this use state, when the seat body 1 is viewed from the front side, the armrest 4 is moved to the outside of the front surface 3a of the seat back 3 as shown in FIG.
The holdability of the seat back 3 itself is also normally maintained. In this manner, the armrest 4 automatically guides the armrest 4 to the notch (triangular space) 6 in the process of moving the armrest 4 to the upright position by operating the movement guide means 12 in conjunction with the switching operation, and seats the seat. The armrest 4 is automatically pulled out of the notch 6 and stored in the regular use position in the process of being stored in the width dimension W1 of the back 3 or conversely moving to the use position. Since the notch 6 is located on the back side of the seat back 3, the front surface 3 a of the seat back 3, that is, the holding surface is not narrowed.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the above-described technical elements except for the technical element of claim 1. For example, as for the movement guide means 12, a similar operation may be obtained by another cam structure or a gear mechanism.

[0020]

As described above, the vehicle seat with the armrest according to the present invention does not impair the holding ability of the seatback itself, regardless of whether the armrest is located in the standing position or the use position. It is excellent in switching operability and, in addition, within the substantially width dimension of the seat back at the upright position when not in use, it is possible to eliminate restrictions on the installation structure as in the related art.

[Brief description of the drawings]

FIG. 1 is a schematic external view of a seat body shown as an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing an example of a movement guide unit of the present invention.

FIG. 3 is a side view and a front view showing the seat body.

FIG. 4 is a side view and a front view showing the seat body in different modes.

FIG. 5 is a diagram showing an example of a conventional structure.

[Explanation of symbols]

 1 is a seat body (vehicle seat) 2 is a seat cushion 3 is a seat back 4 is an armrest 5 is a mounting shaft 6 is a cutout portion 9 is a first shaft member 10 is a second shaft member 11 is a coil spring (biasing means) 12 Is the movement guide means 13 is the cam groove 14 is the pin

Claims (3)

[Claims] An armrest is rotatably mounted to a side surface of a seatback via a mounting shaft, and is arranged along a vertical direction of the side surface when not in use, and is positioned forward of the seatback. In a vehicle seat with an armrest that can be switched to a use position that is protruded and arranged, the side of the seatback on which the armrest is arranged gradually increases in the missing amount from the front surface of the seatback toward the rear surface. The armrest has a sectional shape corresponding to the notch, and integrally forms a corresponding side surface portion and a corresponding back surface portion of the seatback at the upright position, and When it is turned from the upright position toward the use position by the movement guide means provided on the mounting shaft, it protrudes from the notch portion with this rotation. Is lateral movement relative to the corresponding side, armrests vehicle seat, characterized in that. 2. The vehicle seat with an armrest according to claim 1, wherein the armrest is formed to have a substantially triangular cross section, and the notch is formed in a storage space corresponding to the armrest. 3. The mounting shaft comprises a first shaft member fixed to the armrest and a second shaft member fixed to the seat back, and the two shaft members are turned while being attracted to each other by urging means. The moving guide means is movably and slidably inserted and engaged with the first shaft member and the second shaft member.
2. A cam groove provided in a shaft member and a pin engaged with the cam groove, wherein the armrest is moved along the cam groove when the armrest is rotated together with the first shaft member. 3. The vehicle seat with an armrest according to 2.