JPH01115759A - Seat device for vehicle - Google Patents

Abstract

PURPOSE:To prevent mutual interference between a parking lever and a seat, by a method wherein, when a seat is rotated, a regulation action by a rotation regulating mechanism is rendered ineffective in linkage with control of the rotation, and the parking lever is set to a moving position. CONSTITUTION:A seat 1 is rotatably supported to a base plate 4 through a rotary support mechanism, and a base plate 4 is longitudinally slidably supported through a pair of right and left slide rail mechanisms 6. A parking brake device X is situated on the one side of the seat 1. In this case, during rotation of the seat 1, a rotation release lever 55 is brought into a motion position to bring a sheet rotation regulating mechanism Y into an ineffective state. Simultaneously, a cam member 42 is moved to a front position against the force of a spring 51 by means of a cable 52 for controlling a parking brake to bring a stopper pin 49 into a retracted state. This constitution moves downward a parking lever 12 through the force of a spring, and prevents the occurrence of interference in a rotation direction between the lever 12 and the seat 1.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a vehicle seat device.

(Prior Art) In recent years, in vehicle seat devices, so-called rotary seat devices in which a front seat is rotatable have been attempted in order to seat a front seat and a rear seat facing each other.

On the other hand, a parking brake device equipped with a swinging lever type parking lever is placed on the side of the driver's seat. It is located above the target.

Therefore, this parking lever normally protrudes into the rotation locus of the seat in the vertical direction.

In addition, some parking brake devices are equipped with
There is also a so-called retractable parking brake device that allows the parking lever to be lowered while maintaining the operating state of the brake, but even in such a retractable parking brake device, considering its operability, Similarly, the parking lever is provided relatively upwardly so that the parking lever is located within the rotation locus of the seat in the folded position.

For this reason, in a rotary seat that is generally equipped with a parking lever on the side of the seat, when the seat is rotated, the seat and the parking brake interfere with each other in the sorting rotation direction, preventing rotation of the seat. Become.

As one method to solve such problems specific to rotating seats, for example, as disclosed in Japanese Patent Application Laid-Open No. 61-202933, when the seat is rotated, the seat is lifted upward from the seat mounting base, and the seat is rotated. There is a known device that prevents interference between the seat and the parking lever.

However, in this known example, when the seat rotates (
Since the seat is lifted up, (1) when rotating the seat, it is necessary to get off the seat and perform the rotation operation, which is difficult to operate, and (2) the mounting structure of the seat on the vehicle body becomes complicated. There were problems such as easy.

(Object of the Invention) In view of the problems pointed out in the above-mentioned prior art section, the present invention provides a seat device for a vehicle that has a rotating seat and a parking lever disposed on the side thereof, in which the parking lever is operated during normal use. This was done with the aim of both maintaining the performance and improving the operability when rotating the seat.

(Means for Achieving the Object) As a means for achieving the above object, the present invention provides a method for attaching a sort to a seat mounting base fixed to a vehicle body so as to be rotatable in a substantially horizontal plane, In a vehicle seat device in which a parking lever is disposed on the side of a mounting base to actuate and release a parking brake when rotated in the vertical direction, the parking lever is rotated vertically to The seat is rotatable between an upward movement position protruding into the rotational trajectory and a downward movement position located below and out of the rotational trajectory of the seat,
Further, a rotation restriction mechanism is provided between the parking lever and the seat mounting base to restrict rotation of the parking lever from the upper position to the lower position, and the rotation restriction mechanism is used to prevent rotation of the seat. It is constructed so that the restricting action is released in conjunction with the operation.

(Function) In the present invention, by the above means, (During normal times when the seat is not rotated, the parking lever is set to the upward movement position, the operator can easily operate the parking lever to activate the parking brake. (2) When rotating the seat, the restricting action by the rotation restricting mechanism is released in conjunction with the rotating operation of the seat, and the parking lever is set to the lower position. Therefore, effects such as preventing mutual interference between the parking lever and the seat in the seat rotation direction can be obtained.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 1 to 7.

FIG. 7 shows a seat device according to an embodiment of the present invention, in which reference numeral 1 indicates a sort consisting of a seat back 3 and a seat cushion 2. In FIG. This seat 1 is rotatably supported by a base plate 4 via a rotation support mechanism (not shown). Further, the base plate 4 is supported so as to be slidable in the rear direction of the vehicle body with respect to a seat mounting base 5 on the vehicle body side via a pair of left and right slide rail mechanisms 6, 6.

That is, the seat l can be set not only in its normal position facing toward the front of the vehicle body as shown by the solid line in FIG. 7, but also in a rear position facing toward the rear of the vehicle body as shown in the chain line (reference numeral 1') in the figure. Moreover, both types of deafness are able to move in the longitudinal direction of the vehicle. Further, on one side of the seat 1, a parking brake device X, which will be described later, is provided with a parking lever I2.

As shown in FIGS. 1 to 4, the parking brake device X has a base plate 11 whose front and rear ends are bolted to the seat mounting base 5, respectively. A parking lever 12, which will be described later, is provided at approximately the center of the base plate 11 in the front-rear direction via a first fulcrum pin 31.
and a sector-shaped member I4, and a swing lever 13, which will be described later, is attached at a position slightly rearward of the first fulcrum pin 31 so as to be swingable in the vertical direction via a second fulcrum pin 32. The outer peripheral edge of the central portion of the base plate 11 is an arcuate surface centered on the second fulcrum pin 32, and ratchet teeth 22 are formed on this arcuate surface. Further, at one end 13a of the swing lever 13, which extends outward from the ratchet teeth 22 of the base plate II, an engagement groove 26 formed of an arcuate groove is provided which selectively engages the ratchet teeth 22. A swing plate 15 having a ratchet pawl 21 that engages with the third fulcrum pin 3
3 so that it can swing freely.

The groove shape of this engagement 11i 26 is similar to the first fulcrum pin 3! It is said to be an arcuate groove with the center of curvature at .

The parking lever 12 has a grip portion on its movable end 12a side! 9 is provided, and a bush button 17 is attached to the inside of the grip portion 19, which is biased so as to protrude outward by a stelling 18. Furthermore, a release rod 16 whose one end 16a is engaged with the engagement groove 26 of the swing plate 15 is connected to the push button 17, and the forward and backward movement of the button 17 is controlled by the release rod 16. Through the rocking plate I5
is transmitted as the rocking force. Furthermore, the parking lever 12 is constantly moved in the downward direction (
direction), and its lower end 12b
An engagement pin 23 is provided in such a manner that it can engage with an engagement surface 28 formed on one end 13a of the swing lever 13 in the direction in which the parking lever 12 is pulled up.

The fan-shaped member 14 is integrally formed with a fan-shaped plate having an arcuate groove 29, and one end 25a of the fan-shaped member 14 is formed in the arcuate groove 29.
A brake cable 25 fixed to the fan-shaped member 14 is housed in a stretched state.

Further, this flat member 14 is interlockingly connected to the one end 13a side of the swing lever 13 via a connecting member 24,
It can rotate following the rotational displacement of the swing lever 13. The brake cable 25 is always biased in the direction of arrow Q (parking brake release direction) by a spring on the parking brake side (not shown), and is pulled in the direction of arrow P by the rotation of the fan-shaped member 14. This allows the parking brake to be activated.

The operation of the parking brake device X configured in this way will be explained with reference to FIGS. 1 to 3. FIG. This is a state in which the parking lever 12 is about to start operation, and in this case, the parking lever 12 is in the lowered position (the state shown by the solid line in FIG. 7). In this state, the swing plate 15 is tilted by the suppressing action of the release rod 16, and the engagement between the ratchet pawl 21 and the ratchet teeth 22 is released. Further, in this folded position, a part of the parking lever 12, that is, a part on the side of the grip part 19 protrudes above the rotation locus σ of the lowermost end of the seat 1.

This is because the parking lever 12 is positioned higher and closer to the driver in order to ensure operability of the parking lever 12 as described above.

When the parking lever 12 is pulled up in the direction of arrow B from this lowered position and set to the raised position shown in FIG.
The engagement pin 23 engages with the engagement surface 28 of the swing lever 13, causing the swing lever 13 to rotate in the direction of the arrow. In conjunction with the rotation of the swing lever 13, the fan-shaped member 14 is moved upward via the connecting member 24, and the parking brake is activated. In this state, button 1
When the pressing force on the lever 7 is released, the ratchet pawl 21 engages with the ratchet teeth 22, and the swing lever 13 is fixed at its rotational position, thereby maintaining the braking state. In this raised position of the parking lever 12, most of the parking lever 12 is within the rotational trajectory σ of the seat 1.
It protrudes far upwards. That is, in this embodiment, both the raised position and the lowered position of the parking lever 12 correspond to the raised position within the scope of the claims.

Pull up the parking lever 12 to the upright position to operate the parking brake, and press the button 17.
After releasing the pressing force on the bushing button 17 and maintaining the braking state, move the parking lever 12 in the direction of arrow A while releasing the pressing force on the bushing button 17, as shown by the chain line (symbol !2') in Fig. 2. Rotate it to set it to the laid down position again.

At this time, one end 16a of the release rod 16 slides within the engagement groove 26 of the swing plate 15 without applying an equivalent external load to the swing plate 15.

When the parking lever 12 is set in the lowered position as described above, the amount of upward protrusion of the parking lever 12 is smaller than when it is in the upright position.
The parking lever 12 is less likely to interfere with driving, and since the parking lever 12 is appropriately close to the driver, the operability of the parking lever 12 can be maintained well. Therefore, in normal vehicle driving conditions that involve activation or release of the parking brake, the fact that the parking lever 12 is set in the upward movement position does not pose any problem in its operation.

However, when attempting to rotate the seat 1, if the parking lever 12 is set in the upward movement position, the seat 1 and the parking lever 12 will interfere with each other in the direction of rotation when the seat 1 is rotated. The rotation operation becomes impossible. Therefore, in this example,
By applying the present invention, as shown in FIG.
The seat L is laid down so that it is positioned below the rotation locus Q of the seat I. That is, the lever position of the parking lever 12 in FIG. 3 corresponds to the downward movement position in the claims, and in the following description, this position will simply be referred to as the downward movement position.

When the parking lever 12 is set to the lower position in this way, the seat l can be rotated even when the parking brake is applied. However, it is not a good idea to use the parking lever 12 too far away from the driver, resulting in poor operability.

Therefore, in this embodiment, by applying the present invention, a rotation restriction mechanism Y, which will be described later, is arranged on the side of the parking brake device X, and under normal conditions, the rotation restriction mechanism Y allows the parking lever 12 to be While maintaining the operability of parking brake/<-12 by preventing the seat from being rotated from the upright position (i.e., upright position or reclining position) to the downward position, when the seat is rotated, the rotation regulating mechanism Y The restricting action of the parking lever 12 is released and the parking lever 12 is allowed to rotate from the upper position to the lower position, thereby allowing the seat l to rotate. Moreover, in that case, the rotation regulating mechanism Y
The release operation is performed in conjunction with the rotation operation of the seat 1, thereby ensuring accuracy of the rotation operation of the seat 1. The configuration and operation of the rotation regulating mechanism Y will be described below with reference to FIGS. 4 to 6.

The rotation regulating mechanism Y includes a stopper pin 49 that penetrates the web plate 5b of the seat mount 5 on the side where the parking brake device X is attached in the thickness direction and is arranged, and a stopper pin 49 provided inside the seat mount 5. The stopper pin 4
It has a cam member 42 that drives 9 forward and backward. That is,
As shown in FIG. 6, the stopper pin 49 is composed of a shaft body with a flange of an appropriate length, and the attachment of the seat mounting base 5 to the web plate 5b is shown in FIGS. 4 and 5. As shown, the seat mounting base 5 is always fixed by the spring 50.
It is biased so that it immerses itself inside the body.

Furthermore, the mounting positions of these four stopper pins are set as follows. That is, the above parking /<-12
In the direction along the rotation plane of the parking brake/<-12 engaging portion 27 set in the collapsed position as shown in
The parking lever 12 is positioned at such a position that it can be engaged with the parking lever 12 in its downward movement direction to restrict further downward movement of the parking lever 12. In addition, the mounting position in the direction perpendicular to the rotating surface of the parking lever 12 is as shown in FIGS. ), the stopper pin 49 protrudes inward from the rotation locus of the engaging portion 27 of the parking lever 12, and in the retracted state of the stopper pin 49 (the state shown by the chain line (reference numeral 49' in FIG. 4)), the stopper pin 49 is in the parking position. It is set to be located outside of the rotation locus of the engaging portion 27 of the lever 12.

The cam member 42 moves the stopper pin 49 back and forth as appropriate to selectively set the stopper pin 49 in a protruding state or a retracted state, and is formed of a substantially rectangular housing. This cam member 42 has a first cam surface 43 on its negative side 41a and a second cam surface 43 located at a position that is advanced or retreated from this by a distance corresponding to the amount of displacement of the stopper pin 49.
A cam 44 and an inclined surface 45 that connects both cam surfaces 43 and 44 are formed. Also, the upper surface 42 of the cam member 42
A guide groove 46 is formed in the direction along the plane of the cam surfaces 43 and 44 in b.

Further, this cam member 42 is supported on the lower surface side of the mounting bracket 41 via guide pins 48, 48 provided through the guide groove 46 so as to be relatively slidable in the front-rear direction (the longitudinal direction of the guide groove 46). ing. Further, as shown in FIG.
The first cam surface 43 of the seat mounting base 5 is bonded and fixed to the lower surface side of the upper flange plate 5a of the seat mounting base 5 with the first cam surface 43 of the seat mounting base 5 positioned toward the front side of the vehicle body. When the cam member 42 is attached to the seat mounting base 5 side, the stopper pin 49 is brought into contact with the first cam surface 43 of the cam member 42, as shown by the solid line in FIG. The stopper pin 4 is positioned at the front position where the pin 49 is positioned in a protruding state, and the stopper pin 4 is positioned at the second cam surface 44 as shown by the chain line in the figure.
The stopper pin 49 can be positioned at two positions, front and rear, including a rear position where the stopper pin 49 is positioned in the retracted state by abutting the stopper pin 9 .

Furthermore, the cam member 42 is always urged toward the rear position by a spring 51, as shown in FIG.

Further, a parking brake operating cable 52 is connected to the end surface of the cam member 42 on the first cam surface 43 side.

The other end of this parking brake operating cable 52 is
It is fixed to a rotary release lever 55 provided on a connecting bar 7 that connects the left and right seat mounting bases 5, 5 at their front ends, and the rotary release lever 55 is in its neutral position (the position shown by the solid line in FIG. 4). By tilting the cam member 42 from the rear position to the operating position (the position indicated by the chain line (reference numeral 55') in FIG. 4), the cam member 42 is pulled by the parking brake operating cable 52 and is forcibly positioned from the rear position to the front position. It is now possible to do so. Further, a seat rotation operation cable 53 is connected to this rotary release lever 55 for releasing the regulating action of a seat rotation regulating mechanism (not shown) that regulates the rotation of the seat l. 55 is set to the operating position, the regulating action by the seat rotation regulating mechanism is released.

In this way, in the seat device in which the parking brake device Since the parking lever 12 of the brake device
can only be rotated within the range of its upward movement position.

Therefore, the parking lever 12 is located relatively close to the driver, and the parking lever 12 can be operated easily and reliably.

On the other hand, when rotating the seat 1, the rotary release lever 55 is first tilted from its neutral position to the operating position to release the seat rotation regulating mechanism and allow the seat 1 to rotate. At the same time, the cam member 42 is connected to the spring 5 by the parking brake operating cable 52.
The stopper pin 49 is forcibly moved from the rear position to the front position against the spring force of 1, and the stopper pin 49 is brought into the retracted state.

Therefore, the parking lever 12 is positioned from its upper position (that is, raised position or lowered position) to its lower position by the spring force of the lever biasing spring 20 or the operating force of the driver. sheet l
The state of mutual interference in the rotational direction is eliminated. Therefore, the driver can rotate the seat L to face the rear of the vehicle while sitting on the seat L. As described above, in this embodiment, since the operation to avoid mutual interference between the seat 1 and the parking lever 12 is performed only and at the same time as the rotation operation of the seat l, the rotation operation is reliable. This can be done with good operability.

(Effects of the Invention) According to the present invention, the seat is rotatably mounted in a substantially horizontal plane to a seat mounting base fixed to the vehicle body side, and the seat is rotatably operated in the vertical direction on the side of the seat mounting base. In a seat device for a vehicle in which a parking lever is arranged to actuate and release a parking brake, the parking lever is moved to an upwardly moving position in which the parking lever is projected in a rotational trajectory of the seat in the vertical direction, and a rotational trajectory of the seat. The parking lever can be rotated from the upper position to the lower position between the parking lever and the seat mounting base. The present invention is characterized in that a rotation restriction mechanism is provided, and the rotation restriction mechanism is configured such that its restriction action is released in conjunction with the rotation operation of the seat.

Therefore, according to the vehicle seat device of the present invention, (1)
Under normal conditions, when the seat is not rotated, the parking lever is set to the up position, so the operator can easily operate the parking lever to activate and deactivate the parking brake, improving the operability of the parking lever. (2) When the seat is rotated, the restriction action by the rotation restriction mechanism is released in conjunction with the rotation operation of the seat, and the parking lever is set to the downward position. Mutual interference between the parking lever and the seat in the seat rotation direction is prevented, and the seat can be rotated as it is. For example, as in the above-mentioned known example, when the seat is rotated, the seat is lifted and the seat is prevented from interfering with the parking. Compared to the case where the seat rotation operation has to be prevented, the following effects can be obtained, such as improved operability during the seat rotation operation.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view of a parking brake device provided in a seat device according to an embodiment of the present invention, FIGS. 2 and 3 are state change diagrams of FIG. 1, and FIG. 4 is a diagram of the state shown in FIG. 1. of [V-
■An arrow view, Figure 5 is a vertical sectional view of the main part of V-V in Figure 4, and Figure 6
This figure is an exploded perspective view of a main part of the rotation regulating mechanism shown in FIG. 4, and FIG. 7 is an overall perspective view of a seat device according to an embodiment of the present invention. 1 ... Seat 2 ... Seat cushion 3 ... Seat pack 4 ... Base plate 5 ... Seat mounting base 6 ... Slide rail mechanism II... Base plate 12... Parking lever 13... Rocking lever 14... Sector member 15... Rocking plate 16... Release rod 17 ...Bush button 20 ... Lever biasing spring 21 ... Ratchet pawl 25 ... Brake cable 31 to 33 ... Fulcrum pin 41 ... Installation Bracket 42...Cam member 43.44...Cam surface 45...Slanted surface 49...Stopper pin 55...Rotary release lever Fig. 6

Claims (1)

[Claims] 1. The seat is rotatably attached in a substantially horizontal plane to a seat mount fixed to the vehicle body, and the side of the seat mount is rotated vertically to operate the parking brake. A vehicle seat device is provided with a parking lever for releasing the actuation, and the parking lever has an upper moving position that projects within the rotational trajectory of the seat in the vertical direction, and a lower position that is out of the rotational trajectory of the seat. There is a space between the parking lever and the seat mounting base that restricts rotation of the parking lever from the up position to the down position. 1. A seat device for a vehicle, characterized in that a rotation restriction mechanism is provided, and the rotation restriction mechanism is configured such that its restriction action is released in conjunction with a rotation operation of the seat.