JPH0736515Y2 - Armrest devices such as vehicle seats - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an armrest device such as a vehicle seat. Particularly, when the armrest body is not in use, it is stored along the side of the seatback, and when used, it moves forward. The present invention relates to a so-called flip-up type armrest device that tilts and turns.

[Conventional technology]

Conventionally, there is a flip-up type armrest device of this type in which an armrest body is provided with a spring member for biasingly holding the armrest body in a stored position and a use position.

By thus providing the armrest main body with the spring member, when the armrest main body is tilted and rotated during use, the armrest main body rotates to the intermediate position against the elasticity of the spring member, but the intermediate position, that is, the dead point When it is exceeded, it is automatically turned to the use position by the elasticity and the self-weight of the spring member, and when it is stored, the armrest main body is lifted and rotated to the intermediate position against the elasticity of the spring member. It is configured so that it is accommodated while being biased in the accommodation direction so as to jump up due to the elastic force of the member.

[Problems to be solved by the device]

The armrest device configured as described above is semi-automatically operated during storage and during use because the armrest body is biasedly held in the storage position and the use position by the spring member. When the dead point is exceeded, it is automatically and vigorously rotated by the elastic force and its own weight of the spring member, and this inertia causes a strong contact with the stopper member. Especially, in the front seat of the passenger car, the armrest device is used. Since the console box is disposed on the inner side surface of the console box, it strongly hits the upper surface side of the console box to generate a tapping sound, which causes a discomfort to the seated person.

The present invention has been made in view of the above point, and when the armrest body is tilted when setting the armrest body to the use state, the rotation speed is moderated to prevent a tapping sound caused by abutting against another member, and a touch feeling is provided. An object of the present invention is to provide an armrest device for a vehicle seat or the like, which is capable of performing a good fall and turn motion.

[Means for Solving the Problems]

In order to achieve the above object, the armrest device according to the present invention is mounted on a side surface of a seat back by a fixed shaft and is tilted forward from a storage position along the side surface to be used in a substantially horizontal position. The armrest main body in the state is provided with a spring member for biasing and holding the armrest main body in the storage position and the use position, and the piston is inserted and biased in the armrest main body so that the piston is always drawn in by the elastic force of the compression coil spring. A shock-absorbing member is provided, and the piston of this shock-absorbing member and a guide pulley fixed to the shaft are connected by a motion wire, and the motion wire is moved when the armrest body falls down from the stored position to the use position. Is wound around the guide pulley, and this winding pulls the piston against the elastic force of the compression coil spring, and Those configured to mitigate speed at which lodging rotated to the use position of the body.

[Action]

With this configuration, the armrest main body is biasedly held by the spring member in the stored position and the used position, and when the armrest main body falls down from the stored position to the used position and the dead point at the intermediate position is exceeded, the spring force of the spring member is increased. It will be automatically rotated at high speed by its own weight, but in this state, the operating wire is wound around the guide pulley, so that the buffer member is pulled by the piston against the elastic force of the compression coil spring. When the extension operation is performed, the elastic force of the compression coil spring acts as a control force on the piston in this extension operation, and the rotation speed of the armrest body is moderated, so that strong force is applied to other members in the collapsed state, such as the console box. The contact is suppressed and the generation of tapping sound is prevented.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, (1) shows a front seat of a vehicle, for example, a passenger car, and an armrest device (3) is provided on an inner surface of a seatback (2) of the seat (1). (4) is a console box installed between seats.

2 to 4 show an armrest device (3), FIG. 2 is an exploded perspective view, FIG. 3 is a plan view of the assembled state with a part thereof omitted, and FIG. 4 shows an operating state. It is the side view which abbreviate | omitted.

In FIG. 2 to FIG. 4, (10) is an armrest main body, which is constituted by uniting the upper and lower frames (11) and (12) in a box shape, and these both frames (11) and (12)
A space is formed between them.

A shaft (13) is inserted laterally in the rear part of both frames (11) and (12) to be united. That is, the shaft (13) is fixed to the inner surface of the seat back (2) at one end side, and the armrest main body (10) including the upper and lower frames (11) and (12) rotates with respect to the shaft (13). Be pivoted as possible. This shaft (13) consists of rods with a circular cross section, and both side shafts (13a) and (13b) have a groove cross section. The armrest body (10) is formed by connecting the intermediate member (13c) made of a shape that is bent in a curved shape to the shafts (14a) and (14b) of the shaft parts (13a) and (13b) on both sides. Supported.

Further, the shaft (13) has a shaft portion (13a) on one end side inside the armrest body (10), and the armrest body (10).
A support plate (17) having a pawl (16) engaged in an upward direction is fixed to a ratchet (15) having a downward tooth portion (15a) fixed to the inner surface of one side about a shaft support, and A guide plate (18) for setting the rotation range of the armrest body (10) is fixed to the shaft portion (13b) on the other end side, and a guide pin (19) slidingly contacting a guide edge (18a) of the guide plate (18). ) Is projectingly provided on the other inner surface of the armrest body (10), and the armrest body (10) is slidably in contact with the guide edge (18a) of the guide plate (18). ) Is rotated with respect to.

In addition, the intermediate member (13c) of the shaft (13) and the engagement piece (11a) formed in a cut-and-raised shape in the upper inner surface of the armrest body (10), that is, in the substantially central portion of the inner surface of the upper frame (11). A return spring (20) is stretched between them.

An air damper (21) as a cushioning member is mounted inside the armrest body (10). This air damper (21) has a piston (23) slidably inserted into the cylinder (22) and is elastically compressed by a compression coil spring (24) interposed between the piston and the mouth end of the cylinder (22). It is constructed so that it is always drawn in. A guide pulley (25) having a groove (25a) on the outer periphery is fixed to the shaft portion (13b) on the other end side of the shaft (13) corresponding to the piston (23) of the air damper (21). Located slightly behind the top of (24), one end of the working wire (26) will have a bolt (27
a) and a nut (27b) and are wound in the groove (25a). The other end of the operating wire (26) is connected to the outer end of the piston (23) of the air damper (21). It is locked to the formed hook (23a).

Note threaded portion for the outer end of the one side shaft portion of the shaft (13) (13a) is to be secured to the back frame of the seat back (2) (13a ₁₎ are formed, inside the screw section (13a ₁₎ A stopper disk (28) is fixed to the side surface of the seat back (2) at a required interval.

The outer peripheral surface of the armrest body (10) is covered with a required skin member, but is omitted in the drawing.

When not in use, the armrest device (3) constructed in this manner flips up the armrest body (10) along the side surface of the seat back (2) as shown by the chain double-dashed line in FIG. .

In this state, the armrest body (10) is biased rearward by the return spring (20) as shown by the chain double-dashed line in FIG. 4 so that the guide pin (19) is at one end of the guide edge (18a) of the guide plate (18). It is held by being engaged with the part. In this state, the piston (23) of the air damper (21)
The operating wire (26) is extended in the axial direction of the piston (23) from the binding portion to the guide pulley (25), so that the elastic force of the compression coil spring (24) pulls it into the cylinder (22). The length protruding from the cylinder (22) is short, that is, it is in the stored state (dimension a).

Then, when the armrest body (3) is used, the armrest body (10) is tilted and rotated forward against the biasing elastic force of the return spring (20), and in this rotation, the piston (23) of the air damper (21) is rotated. Working wire (26)
Is gradually pulled to the angle tangential to the guide pulley (25) against the elastic force of the compression coil spring (24) and drawn out (indicated by a chain line in FIG. 4). This angle is 97 ° in the illustrated example, and when the armrest main body (10) is rotated up to this angle, the return spring (20) is elastically extended, and after this angle, the return spring (20) is contracted, which is why The armrest body (10) is laid down and rotated at a high speed in combination with its own weight.
That is, the point at which the return spring (20) changes from the elastically expanded state to the contracted state becomes the dead point of the operation of the armrest body (10).

In this state, the operating wire (26) is wound around the guide pulley (25) along the groove (25a), so the air damper (21)
The piston (23) is pulled out against the elastic force of the compression coil spring (24) and is in an expanded state (dimension a + α).

Therefore, the operation wire (26) of the piston (23) of the air damper (21) when the armrest body (10) falls and falls.
The pulling-out / extending operation, that is, the elastic force of the compression coil spring (24) acts as a control force, and the rotation speed of the armrest body (10) is moderated. Then, the guide pin (19) is rotated further downward and stopped by being engaged with the other end of the guide edge (18a) of the guide plate (18) (three-dot chain line in FIG. 4). In this state, the ratchet (15) fixed to the armrest body (10)
Is a claw (16) whose tooth (15a) is attached to the shaft (13)
To leave downward from once.

Then, the armrest body (10) is slightly pulled up and rotated to rotate the ratchet (15) teeth (15a) and claws (1).
6) Engagement and return spring (20) in this state
The armrest body (10) is locked to the lower side by the contraction elastic force of the armrest, and the armrest body (10) is pulled up to a desired height so that the ratchet (15) and the claw (16) are engaged with each other, so that the armrest body (10) has a desired working height. , For example, the state of the solid line in FIG. 4 is set.

In order to store the armrest body (10) from the used state, the ratchet (15) tooth (15a) is moved upwards with respect to the pawl (16) against the return spring (20). And pull up to return spring (20)
When the armrest main body (10) is erected and rotated by the elastic force of extension when the armrest main body (10) is contracted again, the armrest main body (10) is tilted slightly rearward along the side surface of the seatback (2), that is, as shown in FIG. It is held in the state shown by the dotted line.

In this operation, the working wire (26) is connected to the guide pulley (2
5) is changed from the tangential direction to the axial direction of the piston (23) of the air damper (21) so that the piston (2
3) has a longer traction length, which causes the piston (2
3) is pulled into the cylinder (22) by the extension elasticity of the compression coil spring (24) and slid, and the braking force against the rotation of the armrest body (10) by the compression coil spring (24) is reduced, and the armrest body (10) is reduced. ) Is rotated by the return spring (20) so as to be flipped up and stored.

The armrest device (3) of the present example configured as described above
When the armrest main body (10) is folded and rotated during use, the speed of the armrest main body (10) itself and the elastic force of the return spring (20) reduce the speed of acceleration, so that other members such as the console box (4) Since it does not hit hard, it is possible to prevent the generation of hammering noise, and there is no risk of damaging the armrest body (10) itself and the console box (4), and also the speed reduction when the armrest body (10) falls and turns. With this, a high-class feeling can be obtained, and the armrest body (10) can be variably set to a desired height by the ratchet mechanisms (15) and (16).
Moreover, the storage operation of the armrest body (10) is performed semi-automatically, which facilitates the operation.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, an air damper can be used instead. The damper member can be used, and the shape of the armrest body can be variously changed.

[Effect of device]

As described above, according to the present invention, the armrest main body, which is axially attached to the side surface of the seat back and is tilted forward from the storage position along the side surface to be positioned in a substantially horizontal direction to be in the use state, is a seat back. On the other hand, it is biasedly held between the storage position and the use position by the spring member, and is securely held without unnecessarily rattling due to vibration of the vehicle body, etc. When the piston of is expanded against the elastic force of the compression coil spring, the elastic force of the compression coil spring acts as a control force against the rapid rotation of the spring member of the armrest body, and the rotation speed of the armrest body is increased. Is not relieved and does not violently hit other members, for example, a console box, etc., and the generation of tapping sounds is prevented, which causes discomfort to the seated person, It does not damage the console box, etc., and the cushioning member operates when the armrest body is raised and lowered, so that the compression coil spring expands and contracts. It has the effect of obtaining a high-class feeling by relaxing the speed of the above, and is particularly effective when applied to the front seat of a passenger car.

[Brief description of drawings]

FIG. 1 is a side view of a vehicle seat to which an armrest device according to the present invention is applied, FIG. 2 is an exploded perspective view of an example of an armrest device according to the present invention, and FIG. 3 is a partially omitted plan view thereof. The figure is a side view for explaining the operation of which part is omitted. In the figure, (2) is a seat back, (3) is an armrest device, (4) is a console box, (10) is an armrest body, (13) is a shaft, (15) is a ratchet, (16) is a claw, ( 20) is a return spring as a spring member,
(21) is an air damper as a cushioning member, (22) is a cylinder, (23) is a piston, (24) is a compression coil spring, (25) is a guide pulley, and (26) is an operating wire.

Claims (1)

[Scope of utility model registration request] 1. An armrest main body, which is pivotally mounted on a side surface of a seat back by a fixed shaft, is tilted forward from a storage position along the side surface, and is positioned in a substantially horizontal direction to be in a use state. Is provided with a spring member for biasing the storage position and the use position to be biased, and a cushioning member is provided in the armrest main body in which the piston is inserted and biased so that the piston is always pulled in by the elastic force of the compression coil spring. However, the piston of the cushioning member and a guide pulley fixed to the shaft are connected by an operation wire, and the operation wire moves along with the guide pulley as the armrest body falls down from the storage position to the use position. The piston is pulled around against the elastic force of the compression coil spring by this winding and the armrest body is used. An armrest device for a vehicle seat or the like, characterized in that a speed at which the stool is turned to a use position is moderated.