JPH06181828A - Moderation imparting mechanism for turning member - Google Patents

Abstract

PURPOSE:To change strength and weakness of a turning moderation sensation of an arm rest by notching one side of a linear cylindrical member of the arm rest allowed to abut on the periphery of a turning center shaft of the tip part of a shaft fixed to a back rest, and adjusting strength of a spring for pressing a sliding abutting member provided in the middle side of the cylindrical member. CONSTITUTION:In a fixed part 3 of a seat 5, and the tip of a fixed side supporting shaft 22 fixed by an engaging part 32 and an engaging projection 33, a fixed side supporting shaft 22, and a turning center axis 4 are provided, respectively. The periphery of a linear cylindrical member 15 for forming an arm rest 2 is wrapped in with a cushion material 13. By notching one side face of the turning center shaft 22 of the linear cylindrical member 15, the cross section is formed in a U-shape, and the linear cylindrical member 15 is allowed to abut on the turning center shaft 4 so as to be turnable. In the linear cylindrical member 15, a sliding/abutting member 28 is contained, and compressive force for pushing a projection 31 is adjusted by a compression coil spring 29. As for the arm rest 2, at the time of one-use, the sliding/ abutting member 28 abuts on the C face of the supporting shaft 22, and at the time of use, it goes across a corner part B and abuts on the A face. In such a way, by adjusting the spring 29, a turning moderation sensation is varied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moderation imparting mechanism for a rotating member such as a headrest or an armrest.

[0002]

2. Description of the Related Art Japanese Patent Application No. 4-2 of the prior invention of the same applicant
No. 90771 consists of a rotating horizontal axis that is attached to the backrest seat so that it can rotate only about the horizontal axis, and an armrest that projects a U-shaped bracket so that it has an L-shape on the base side. The front end of the rotation horizontal axis is axially attached to the one side plate and the other side plate of the U-shaped bracket by an orthogonal axis, and the armrest rotates together with the rotation horizontal axis and the armrest is centered on the orthogonal axis. In the configuration in which only the armrest is rotated to be stored in the storage recess provided on the side surface of the backrest seat, the U-shaped bracket is configured to rotate when the armrest is rotated from the use state to the storage state. When the armrest is rotated together with the U-shaped bracket to bring the armrest into a used state, it elastically abuts on the tip end surface of the rotating horizontal shaft, and when the armrest is rotated into the retracted state, the armrest is once pushed and dented and swells again. The rotation horizontal axis The moderation imparting member having a bulging portion elastically abutting on the side surface is a U-shaped synthetic resin shape in which the ends of the left and right walls are connected by a connecting wall and fitted in the groove of the linear tubular member with substantially no space. The bulging portion is formed in the connecting wall and the mounting holes are formed in the left and right walls, and the moderation imparting mechanism is located between the linear tubular member and the tip of the fixed side support shaft 22. The mounting device of the armrest fixed by inserting the rotation center shaft is described.

[0003]

In the above-mentioned prior invention, the elasticity of the bulging portion gives a feeling of moderation. However, since the moderation imparting member cannot obtain a very strong elasticity, there is a problem that the feeling of moderation is weak. is there. There is also a problem that the degree of moderation cannot be adjusted very much.

[0004]

An object of the present invention is to provide a moderation imparting mechanism capable of changing the strength of a moderation feeling by the action of a rotating member.

[0005]

Therefore, according to the present invention, the abutting surface of the protruding end portion 62 of the linear tubular member 15 to which the rotating member 1 such as the headrest 40 or the armrest 2 is fixed and one side surface of the periphery thereof are opened. Abutting opening 60 and one side opening 61
The tip end head of the fixed side support shaft 22 is inserted into the projecting end portion 62, and the cylindrical member 15 is bent with respect to the fixed side support shaft 22 by the rotation center shaft 4. Inside the tubular member 15, a compression coil spring 29 is provided on the inner side, and a sliding contact member 28 is provided on the inlet side, which is constantly elastically pressed by the spring 29 toward the projecting end 62 side. At the tip of the tip end, a corner portion B far from the rotation center axis 4 and the sliding contact member 2 that is closer to the shaft 4 than the corner portion B are sandwiched between the corner portions B. This is a moderation imparting mechanism for a rotating member in which one end face A and the other end face C which are in contact with each other are formed.

[0006]

Embodiments of the present invention will be described with reference to the drawings.
Is a rotating member including an armrest 2 and the like, which will be described later, and 3 is a fixing member such as a seat 5 for a vehicle or the like on which the rotating member 1 is rotatably attached by a rotating center shaft 4, and the rotating member 1 and the fixing member. A moderation imparting mechanism 6 is provided between the two.

Regarding the concrete structure of the moderation imparting mechanism 6,
First, the relationship between the armrest 2 (corresponding to the rotating member 1) and the seat 5 (corresponding to the fixing member 3) will be described. 10
Is a seat of a vehicle seat 5, 11 is a backrest seat, and the armrest 2 is provided on a side portion of the backrest seat 3 so as to project forward. Reference numeral 12 is an armrest frame of the armrest 2.
A cushion material 13 is attached to the outer periphery of the cushion material 13 in a known manner, and the surface of the cushion material 13 is covered with a skin member 14.

The base portion of the armrest frame 12 is fixed with the base portion of a linear tubular member 15 having a V-shaped cross section in a direction intersecting the length direction of the armrest frame 12. The linear tubular member 15 includes one side plate 16 that fixes the armrest frame 12, another side plate 17, and one side middle plate 18 that connects the one side plate 16 and the other side plate 17.
The other side middle plate 19 and the abutting plate 20 at the base of the linear tubular member 15.
Formed by. Reference numeral 21 is an insertion hole formed in the one side plate 16 and the other side plate 17, and the tip end of the linear tubular member 15 in which the insertion hole 21 is formed is located at a position closer to the back seat 11 than the insertion hole 21.
The projecting end portion 62 is formed so as to project to the side, and the abutting surface of the projecting end portion 62 and one side surface around the projecting end portion 62 are opened so that the abutting opening 6 is formed.
0 and one side opening 61 are formed.

Reference numeral 22 denotes a fixed side support shaft in the left-right direction, which is a seat frame 23 of the backrest seat 11, as will be described later.
A bracket 24 fixed to one of the left and right sides of is rotatably attached. An insertion hole 25 penetrating in a direction orthogonal to the fixed side support shaft 22 is formed at the tip of the fixed side support shaft 22, and the insertion hole 25 and the insertion hole 21 are aligned and fixed by the rotation center shaft 4. At the tip of the side support shaft 22, the linear tubular member 15
Attach the base of the rotatably.

Therefore, the moderation imparting mechanism 6 for imparting moderation to the rotation of the linear tubular member 15 is provided between the linear tubular member 15 and the fixed side support shaft 22. Moderation mechanism 6
Is made of synthetic resin or the like, and is formed of the linear tubular member 15
It is formed by a sliding contact member 28 slidably fitted inside and a compression coil spring 29 for urging the sliding contact member 28 to slide toward the fixed side support shaft 22 side. Therefore, when the armrest 2 is in use, the end face 30 of the sliding contact member 28 comes into close contact with the one end face A of the tip of the fixed side support shaft 22, and when the armrest 2 is displaced to the retracted state, the tip corner portion. It comes into close contact with the other end surface C of the side surface of the tip through B and urges the linear tubular member 15 so as not to rotate about the rotation center shaft 4, thereby stabilizing the armrest 2.

That is, when the armrest 2 is rotated about the rotation center axis 4 in the upright state and the retracted state, the end face 30 of the sliding contact member 28 of the moderation imparting mechanism 6 is fixed to the fixed side support shaft 22. One end face A and the other end face C through the tip corner B of the tip of the
Until the end surface 30 of the sliding contact member 28 gets over the tip corner portion B, the sliding contact member 28 has to slide once toward the armrest 2 side against the elasticity of the compression coil spring 29. When the resistance against elasticity makes the operation load heavy and the end surface 30 of the sliding contact member 28 gets over the tip corner B, the elasticity of the compression coil spring 29 makes the armrest 2 turn less easily, giving a feeling of moderation. Reference numeral 31 is a protrusion that ensures contact with the compression coil spring 29.

The fixed side support shaft 22 is, as described above,
Attached to bracket 24 only for rotation, bracket 2
The engaging member 32 is attached to the fixed side support shaft 22 protruding inward from
The engaging member 32 engages with the engaging protrusion 33 provided on the bracket 24 to hold the armrest 2 in a substantially horizontal use state and a standing storage state. Reference numeral 34 denotes a nut for screwing the rotation center shaft 4, which is fixed to one side plate 16 of the linear tubular member 15 by welding.

Then, the side surface 35 of the backrest seat 11 is formed.
A vertically long storage recess 36 is formed on the side surface (not limited to the side surface), and a part of the rotation center shaft 4 of the fixed side support shaft 22 is exposed to the lower part of the storage recess 36 so as to be in a horizontal state. The armrest 2 is rotated about the fixed-side support shaft 22 to stand up, and then the linear tubular member 1 is attached to the fixed-side support shaft 22.
When 5 is rotated about the rotation center axis 4, the armrest 2
Can be stored in the storage recess 36.

9 and 10 show an embodiment in which the rotating member 1 is the headrest 40 provided on the upper portion of the seat 5, and one or two pillars 41 are provided downward on the lower surface of the headrest 40. Of the pillars 41, the upper pillars 42 of which the upper part is formed hollow are equivalent to the linear tubular member 15, and the lower pillars 43 of the shaft-shaped lower part of the pillars 41 support the fixed side. Corresponding to the shaft 22, the moderation imparting mechanism 6 is provided between the upper pillar 42 and the lower pillar 43, the compression coil spring 29 is inserted into the upper pillar 42 (the straight tubular member 15), and then the end face 30 is turned downward. The sliding contact member 28 is inserted into the upper pillar 42 (the linear tubular member 1
5) and the lower pillar 43 (fixed side support shaft 22) are pivotally mounted by the rotation center shaft 4. The lower pillar 43 (fixed side support shaft 22) is supported by a lock mechanism (not shown) of a support cylinder 44 provided on the upper portion of the backrest seat 11 so that its height can be adjusted. Reference numeral 45 is a release operation knob of the lock mechanism. The abutting surface of the projecting end portion 62, which is the lower rear surface of the upper pillar 42 (the linear tubular member 15), also has an effect of restricting the rearward rotation of the headrest 40.

11 and 12, the rotating member 1 is the table 50, the fixing member 3 is the rear surface of the backrest seat 11 or an arbitrary part such as a door, and the fixing member 3 is fixed shaft 5
1 (corresponding to the fixed side support shaft 22) is projected, and the fixed shaft 51
The table 50 is pivotally attached to the (fixed side support shaft 22) by the rotation center shaft 4, and the case 52 (the linear tubular member 1
5) is formed, and the case 52 (the linear tubular member 15) is formed.
The sliding contact member 28 and the compression coil spring 29 of the moderation imparting mechanism 6 are fitted therein.

[0016]

[Operation] Next, the operation will be described. The abutting surface of the projecting end portion 62 of the linear tubular member 15 of the rotating member 1 and the abutting opening portion 60 and the one side opening portion 61 formed by opening one peripheral side surface are bent with respect to the fixed side support shaft 22. Since the rotation center shaft 4 is attached so as to be free, when the fixed side support shaft 22 is located in the abutting opening 60, the end surface 30 of the sliding contact member 28 is fixed to the tip of the fixed side support shaft 22. When the fixed-side support shaft 22 is positioned in the one-side opening 61, the end face 30 of the sliding contact member 28 abuts the other end face C of the tip of the fixed-side support shaft 22. When the rotating member 1 is rotated around the rotating central shaft 4, the end face 30 of the sliding contact member 28 of the moderation imparting mechanism 6 together with the linear tubular member 15 is, for example, fixed side support shaft 2.
2 moves from the one end face A of the tip end of the slide end 2 through the tip corner portion B while being in sliding contact with the other end face C, and thus the end face 3 of the sliding contact member 28.
0 is elastically pressed and slides when passing through the tip corner B,
When the tip end corner B is crossed over, the sliding contact member 28 returns to its original position due to the elasticity of the compression coil spring 29.

Therefore, the rotary member 1 is abutted against the opening 60.
And from the position where the tip of the fixed side support shaft 22 faces one of the one side openings 61 to the other position of the abutting opening 60 and the one side opening 61 about the rotation center axis 4. Then, until the end surface 30 of the sliding contact member 28 passes through the tip corner portion B, there is some resistance due to the elasticity of the compression coil spring 29, and the end surface 30 of the slide contact member 28 is located at the tip corner portion B.
When the rotary member 1 is rotated to a predetermined position by the elastic force of the compression coil spring 29 that returns to its original position when the rotary member 1 is moved over, the end surface 30 of the sliding contact member 28 has the other end surface C or The operator is provided with a moderation sensation of being in close contact with the one end surface A and preventing the rotation of the rotation member 1 to be stable.

Therefore, in the moderation imparting mechanism 6, the compression coil spring 29 is inserted into the linear tubular member 15, the sliding contact member 28 is then inserted, and the insertion hole 2 at the tip of the fixed side support shaft 22 is inserted.
When the insertion hole 21 of the linear tubular member 15 is aligned with the rotary central shaft 4 and the linear tubular member 15 is axially attached to the tip of the fixed side support shaft 22, the process is completed. Therefore, the assembly is simple, and no special space is required to mount the moderation imparting mechanism 6.

Further, since the compression coil spring 29 is simply inserted into the linear tubular member 15, by exchanging the compression coil spring 29 with one having a different elasticity, the resistance feeling given to the rotating operation of the rotating member 1 is increased or decreased. Thus, the compression coil spring 29 having a considerably strong elasticity can be used because the compression coil spring 29 having a long length can be inserted in the lengthwise direction of the linear tubular member 15.

As will be described later in detail, the armrest 2 is displaced between the stored state and the used state, and the armrest 2 is rotated by the rotating member 1.
In addition, the backrest seat 11 side corresponds to the fixing member 3, respectively,
The end surface 30 of the sliding contact member 28 of the moderation imparting mechanism 6 is in close contact with the one end surface A at the tip of the fixed side support shaft 22 when the armrest 2 is in use, and when the armrest 2 is in the retracted state, It is in close contact with the other end surface C of the tip of the fixed side support shaft 22 and biases the linear tubular member 15 so as not to rotate about the rotation center shaft 4, thereby stabilizing the armrest 2.

Therefore, the armrest 2 is rotated about the central axis 4
When it is rotated around, the end face 30 of the sliding contact member 28 of the moderation imparting mechanism 6 together with the linear tubular member 15 passes from the one end face A of the tip of the fixed side support shaft 22 through the tip corner portion B. Since the sliding contact member 28 moves while slidingly contacting the other end surface C, the end surface 30 of the sliding contact member 28 is elastically pressed when passing the tip corner portion B, and once slides toward the armrest 2 side, and when the tip corner portion B is crossed over. Since the sliding contact member 28 is restored to its original position by the elastic force of the compression coil spring 29, when the armrest 2 is rotated about the rotation center axis 4 from either the use state or the storage state, the sliding contact member 28 slides. There is some resistance until the end surface 30 of the contact member 28 passes through the tip corner portion B, and when the end surface 30 of the sliding contact member 28 passes over the tip corner portion B, the armrest 2 rotates due to the elastic force that returns to the original state. The movement is light and the armrest 2 is in place. When rotated to a position, the sliding contact member 2
The end face 30 of 8 is in close contact with the other end face C or the one end face A to give the operator a moderation sensation that the arm rest 2 is prevented from rotating and stabilized.

However, the displacement of the armrest 2 is as shown in FIG.
The armrest 2 in the retracted state of the chain double-dashed line of the backrest seat 1
When the linear tubular member 15 is pulled out of the storage recess 36 of FIG. The armrest 2 stops rotating by contacting the front surface of the armrest 22. In this case, the fixed side support shaft 22 does not rotate, and only the linear tubular member 15 rotates. Next, when the upper part of the armrest 2 in the upright state is rotated forward, the linear tubular member 15 causes the fixed side support shaft 22 to rotate with respect to the backrest seat 11, and the engagement member 32 of the fixed side support shaft 22 moves. The fixed side support shaft 22 is engaged with the engaging protrusion 33 of the bracket 24 fixed to the backrest seat 11 side.
The rotation of the armrest 2 is stopped, the armrest 2 becomes substantially horizontal, and the tip of the armrest 2 is held at the working height position.

At this time, the relationship between the linear tubular member 15 and the fixed side support shaft 22 is that the fixed side support shaft 22 rotates with respect to the bracket 24 so that the middle plate 1 of the one side of the linear tubular member 15 is rotated.
8 is in contact with the lower surface of the fixed side support shaft 22, and the linear tubular member 15
Prevents the tip of the shaft from rotating downward with respect to the fixed side support shaft 22 about the rotation center shaft 4. Therefore, the armrest 2
The upper surface of is held horizontally when viewed from the front. Further, since the fixed side support shaft 22 rotates with respect to the bracket 24, the axial center direction of the rotation center shaft 4 becomes the front-back direction, so that the tip end of the armrest 2 does not shake in the left-right direction. Further, since the fixed side support shaft 22 rotates with respect to the bracket 24, the one side plate 16 and the other side plate 17 of the linear tubular member 15 come into contact with the front surface and the rear surface of the fixed side support shaft 22, respectively. The linear tubular member 15 is prevented from swinging back and forth with respect to the fixed side support shaft 22, and the armrest 2
It also prevents the tip of the backlash from rattling to the left and right. Contrary to the above, when the tip of the armrest 2 in a substantially horizontal use state is lifted upward, the armrest frame 12 of the armrest 2 causes the linear tubular member 15 to rotate around the fixed side support shaft 22 and the armrest 2 stands up. State, then
When the armrest 2 in the upright state is pushed backward, the linear tubular member 15 pivots rearward about the pivot shaft 4, and the armrest 2 is stored in the storage recess 36 of the backrest seat 11.

However, in the embodiment of FIGS. 9 and 10, when the headrest 40 is in the standing upright use state, the end surface 30 of the sliding contact member 28 of the moderation imparting mechanism 6 has the lower pillar 43 (fixed side support shaft 22). ) Is in close contact with one end surface A of the upper end of the slide contact member 28, and when the headrest 40 is rotated forward about the rotation center axis 4 and is in the retracted state, the end surface 30 of the sliding contact member 28 has the lower pillar 43.
It is in close contact with the other end surface C on the front side of the front end of the (fixed side support shaft 22), and the headrest 40 is stabilized at each of the use position and the storage position, and is rotated about the rotation center shaft 4 to the use state or the storage state. There is some resistance until the end surface 30 of the sliding contact member 28 gets over the tip corner B,
When the end surface 30 of the sliding contact member 28 gets over the corner B of the tip, the elastic force of returning to the original state gives the operator a sense of moderation that the rotation of the headrest 40 becomes light.

However, in the embodiment in which the rotary member 1 of FIGS. 11 and 12 is the table 50, when the table 50 is in a horizontal use state, the end face 30 of the sliding contact member 28 of the moderation imparting mechanism 6 is When the table 50 is in close contact with one end surface A of the tip of the fixed shaft 51 (fixed side support shaft 22) and is in the retracted state by rotating the table 50 upward about the rotation center shaft 4, the end surface of the sliding contact member 28 is shown. Reference numeral 30 is closely attached to the other end surface C of the fixed shaft 51 (fixed side support shaft 22) at the upper end of the tip to stabilize the table 50 at each of the use position and the storage position, and is used or stored around the rotation center shaft 4. When the sliding contact member 28 is rotated to the state, there is a certain amount of resistance until the end surface 30 of the sliding contact member 28 gets over the tip corner portion B, and the end surface 30 of the sliding contact member 28 reaches the tip corner portion B.
The operator feels a moderation feeling that the rotation of the table 50 becomes light due to the elastic force of returning to the original position when the vehicle gets over the point.

In this case, the case 52 (the linear tubular member 1
Since the lower surface of 5) contacts the lower surface of the fixed shaft 51 (fixed side support shaft 22), rotation of the table 50 with respect to the fixed member 3 is restricted and supported. A lock device for fixing the table 50 at each of the use position and the storage position may be provided.

[0027]

According to the present invention, the abutting surface of the projecting end portion 62 of the linear tubular member 15 to which the rotating member 1 such as the headrest 40 or the armrest 2 is fixed and one side surface around the abutting surface are opened to form the abutting opening portion 60. The side opening 61 is formed, and the protruding end 62 is formed.
The tip side head portion of the fixed side support shaft 22 is inserted into the inside thereof, and is axially stopped by the rotation center shaft 4, so that the tubular member 15 is fixed to the fixed side support shaft 22.
A compression contact spring 29 is provided on the inner side of the tubular member 15, and a sliding contact member 28 is provided on the inlet side, which is constantly elastically pressed by the spring 29 toward the projecting end portion 62 side. A corner portion B located at a position farther from the rotation center shaft 4 and a sliding contact closer to the shaft 4 than the corner portion B on both sides of the corner portion B sandwiching the corner portion B at the tip of the side support shaft 22. The compression coil spring 29 and the sliding contact member 28 are inserted into the linear tubular member 15 because the moderation imparting mechanism of the rotating member is formed by forming the one end surface A and the other end surface C with which the member 2 abuts. Assembling is completed simply by doing so, it is easy to assemble, no special space for mounting is required, and the overall size and weight can be reduced. Therefore, the restriction on the size and weight of the mounting portion can be remarkably relaxed, so that the mounting portion can be used for various mounting portions. Further, since the compression coil spring 29 is simply inserted into the linear tubular member 15, by exchanging the compression coil spring 29 with one having a different elasticity, it is possible to increase or decrease the resistance feeling given to the rotating operation of the rotating member 1. Since the compression coil spring 29 can be set to the optimum moderation and the long compression coil spring 29 can be inserted in the lengthwise direction of the linear tubular member 15, the compression coil spring 29 having a considerably strong elasticity can also be used.

[Brief description of drawings]

FIG. 1 is a partially transverse plan view with an armrest attached.

FIG. 2 is a perspective view of a seat.

FIG. 3 is an exploded perspective view.

FIG. 4 is a horizontal cross-sectional plan view of the armrest in a rotated state.

FIG. 5 is a plan view of the armrest in a rotating state.

FIG. 6 is a perspective view of a rotation state of the armrest.

FIG. 7 is a perspective view of the same.

FIG. 8 is a perspective view of the same.

FIG. 9 is a partially longitudinal side view of the headrest.

FIG. 10 is an enlarged sectional view of the mounting portion.

FIG. 11 is a side view of the table.

FIG. 12 is a perspective view of the same operating state.

[Explanation of symbols]

1 ... Rotating member, 2 ... Armrest, 3 ... Fixing member, 4 ...
Rotation center axis, 5 ... Seat, 6 ... Moderation imparting mechanism, 10 ... Seat, 11 ... Back seat, 12 ... Armrest frame, 13 ... Cushion material, 14 ... Skin member, 15 ... Straight tubular member, 16 ... One side plate, 17 ... other side plate, 18 ... one side middle plate, 19 ... other side middle plate, 20 ... abutting plate, 21 ... insertion hole,
22 ... Fixed side support shaft, 23 ... Seat frame, 24 ... Bracket, 25 ... Insertion hole, 28 ... Sliding contact member, 29 ... Compression coil spring, 30 ... End face, 31 ... Projection, 32 ... Engaging member, 33 ... Engagement protrusion, 34 ... Nut, 35 ... Side surface, 36
… Storage recess, 40… Headrest, 41… Pillar, 42
... upper pillars, 43 ... lower pillars, 44 ... supporting cylinders, 45
... release operation knob, 50 ... table, 51 ... fixed shaft 51,
52 ... Case, 60 ... Impact opening, 61 ... One side opening,
62 ... protruding end.

Claims (1)

[Claims] 1. An abutting surface of a protruding end portion 62 of a linear tubular member 15 to which a rotating member 1 such as a headrest 40 or an armrest 2 is fixed and one side surface around the abutting surface are opened, and an abutting opening portion 60 and one side opening. A portion 61 is formed, and the tip end head portion of the fixed side support shaft 22 is inserted into the protruding end portion 62 and is axially locked by the rotation center shaft 4 so that the tubular member 15 is fixed to the fixed side support shaft 22. In the tubular member 15, a compression coil spring 29 is provided on the inner side, and a compression coil spring 29 is always provided on the inlet side by the spring 29.
A sliding contact member 28 that is elastically pressed is provided on the second side, and a corner portion B at a position far from the rotation center shaft 4 and the both sides of the corner portion B are located at the tip end head portion of the fixed side support shaft 22. One end surface A of the sliding contact member 2 that is closer to the shaft 4 than the corner B is
And a moderation imparting mechanism for a rotating member having a second end surface C.