CN100415564C - Vehicle Seats with Seat Cushion Roll-Up Structure - Google Patents

Abstract

A vehicle seat with a seat cushion flip-up structure and a locking mechanism, wherein the locking mechanism is provided for a slide rail, the slide rail includes an upper rail and a lower rail, and the locking mechanism can be used to fix the seat on the seat The upper rail on the chair locks to or unlocks from the lower rail. An unlocking handle arranged on the seat cushion realizes working connection with a first arm member by means of a first connecting rod. The first arm is connected with a second arm arranged outside the seat cushion, and the second arm is operatively connected with the locking mechanism through a second link, wherein the second link is arranged outside the seat cushion . Regardless of whether the seat cushion is turned up, operation of the unlock handle will actuate the locking mechanism, thereby locking the seat to the lower rail or unlocking the seat from the lower rail.

Description

Vehicle Seats with Seat Cushion Roll-Up Structure

technical field

The present invention relates to a vehicle seat with a turn-up structure (or mechanism) so that the seat cushion of the seat can be turned up to a substantially upright non-use state. Specifically, the present invention relates to a A vehicle seat with a seat cushion turn-up structure: the seat cushion turn-up structure maintains an interlocking relationship with a locking mechanism, wherein the locking mechanism is for locking the seat in the front-rear direction relative to a given position lock/unlock.

Background technique

There are prior art vehicle seats with a seat cushion tilt-up structure by which a seat occupant can tip the seat cushion from a substantially horizontal in-use configuration to a substantially upright non-use configuration . For example, Japanese Patent Publication No. 2003-40009 discloses such a vehicle seat. The seat disclosed in this patent document is provided with a slide rail device, and the locking mechanism of the seat works with the slide rail device. Connect, the seat is also provided with a cushion turning up mechanism, wherein the slide rail device is made of a lower rail and an upper rail, and the upper rail is slidably assembled into the lower rail. In this prior art solution, a base frame is connected with the upper rail, and the seat cushion is rotatably arranged in the base frame to form a seat cushion turning-up structure that allows the seat cushion to turn up. In addition, a rotary actuating piece can also be rotatably set, which is used to urge the seat locking mechanism to produce a locking action and an unlocking action, and is located between the control rod of the seat cushion turning-up mechanism and the rotating actuating piece. A wire cable is connected so that operation of the lever rotates the rotary actuating plate, thereby causing the seat locking mechanism to lock the upper rail to the lower rail or unlock the upper rail from the lower rail.

Of course, with this common type of seat, the lever can be operated regardless of whether the seat cushion is in its normal use position, which is horizontal, or in its non-use position, which is tipped up. The center of rotation of the seat cushion is located at its rear end, and the above-mentioned control rod is arranged on the seat cushion. Thus, since the rotary actuator plate is arranged on the base frame or upper rail, it has been found that in some cases the control lever interferes with the base frame and the cables or wires between the control lever and the rotary actuator plate Interfere with the seat lift mechanism, seat frame, or base frame. For this reason, conventional seats of this type have shown some mechanical deficiencies and malfunctions, which is annoying: it is necessary to arrange rather complicated cables in the seat cushion, which will make this type of seat cushion with a tilt-up mechanism The assembly of the vehicle seat became difficult.

Contents of the invention

Therefore, in view of the aforementioned drawbacks, it is an object of the present invention to provide an improved vehicle seat with a seat cushion turn-up structure, which is simple in structure and easy to operate, and does not require any of the above-mentioned cable elements.

To achieve this object, according to the present invention, a vehicle seat is provided, comprising:

A slide rail assembly comprising a lower rail assembly and an upper rail assembly, the upper rail assembly being slidably engaged with the lower rail assembly so that the upper rail assembly can move along the lower rail assembly in a forward direction toward the front of the seat, and slide in the rearward direction towards the rear of the seat;

a base frame device fixedly connected to the upper rail device;

A cushion, which is rotatably connected to the base frame unit, so as to be tiltable upwardly from a substantially horizontal in-use position to a substantially upright non-use position. The seat cushion has a front end facing in a forward direction;

A locking mechanism, which is used to lock the upper rail device to the lower rail device, or unlock the upper rail device and the lower rail device, the locking mechanism includes: a locking device, which is arranged in the upper rail, so that It can move in one of a locking direction and an unlocking direction. When moving in the locking direction, it locks the upper rail device to the lower rail. When moving in the unlocking direction, it aligns the upper rail with the The locking relationship between the lower rails performs unlocking; and a rotary actuator device is rotatably arranged above the lower rail device and is operatively connected with the locking device; and

a locking/unlocking actuating mechanism for acting on the locking mechanism for locking the upper rail assembly to the lower rail or unlocking the upper rail from the lower rail, the locking/unlocking actuating mechanism being disposed on Between the seat cushion and the locking mechanism, and including:

An unlocking handle, which is movably arranged under the front end of the seat cushion, the operating handle is in a locked position under normal conditions, and can be operated from the locked position to an unlocked position;

A first connecting rod, which extends longitudinally along the seat cushion and can move longitudinally, and one end of the first connecting rod is operatively connected to the operating handle;

A first rotating arm, which is rotatably arranged between the seat cushion and the basic frame device, and one end of the first rotating arm is operatively connected to the other end of the first connecting rod;

a second swivel arm fixedly connected at one end to the other end of the first swivel arm; and

A second link is operatively connected between the other end of the second pivot arm and the rotary actuator means of the locking mechanism.

Wherein, when the unlocking handle is set on the locking position, the locking device is kept in the locking direction, so that the upper rail can be locked on the lower rail; and the operation of changing the unlocking handle to the unlocking position will cause the second A linkage, the first pivot arm, the second pivot arm, and the second linkage move to rotate the rotary actuator means to move the locking means in the unlocking direction, thereby realizing the upper rail and the lower rail unlocked.

Other features and advantages of the present invention will be more clearly understood from the following description with reference to the accompanying drawings.

Description of drawings

Fig. 1 is a partially cut-away schematic axonometric view showing the frame of a vehicle seat with a seat cushion turn-up structure according to the present invention;

Fig. 2 is a partially cutaway front view of the vehicle seat, which schematically shows the state when the seat cushion is turned up and not locked;

Fig. 3 is an exploded isometric view of a partial cutout, has represented the main parts of seat of the present invention;

The partially cut-off front view in Fig. 4 exemplarily shows the unlocking action of the main components of the present invention when the seat cushion in the normal positioning state is unlocked and turned up; and

The partially cutaway front view of Figure 5 shows the seat cushion when it has been turned up to its normal non-use position.

Detailed ways

Referring to FIG. 1 to FIG. 5 , the figures show a preferred embodiment of a vehicle seat with a seat cushion turn-up structure according to the present invention.

As can be seen from Figures 1 and 2, the vehicle seat shown in the figures (which is generally designated by the symbol S) is generally made of the following components: a basic frame member 1; a seat back 5 , which is pivotally connected to the rear of the base frame member 1; and a seat cushion 2, which is pivotally connected to the front of the base frame member 1 by means of an auxiliary guide link member 15, whereby, As shown in FIG. 2, the seat cushion 2 can be rotated between a substantially horizontal use state and a substantially upright non-use state. That is to say, the seat cushion 2 can be turned up to an upright non-use state by using a suitable turning-up mechanism (not shown) for a car seat, and in this state, the seat cushion 2 is substantially parallel to the The vertically extending backrest 5, wherein, the turning-up mechanism not shown in the figure is well known in the art, especially this mechanism does not relate to the technical subject of the present invention, so this paper will not make a specific description to it.

In addition, a pair of known slide rails 4 are also provided, and the two slide rails are separated from each other so that the seat S can move in the front-rear direction. Both slide rails 4 include a lower rail 4A slidably engaged with the lower rail 4A and an upper rail 4B, wherein the lower rail 4A is adapted to be fixed to the floor of the vehicle (not shown).

In this context, it should be noted that in the following the meanings of words such as "forward direction" or "forward" and "rearward direction" or "backward" are still In terms of the direction and the direction pointing to the rear side B of the seat S.

As shown in the figure, two basic frame members 1 are fixedly connected with two upper rails 4B respectively.

The seat back 5 includes a back frame 5A having a pair of side frame portions 50L. The respective lower ends of the side frame portions 50L are fixedly connected to two upper arms 6A, wherein the upper arms 6A are associated with a tilting device (not shown). Reference numeral 50A designates a connecting rod associated with the tilting device, which realizes the working connection between the two upper arms 6A.

The seat cushion 2 includes a seat cushion frame 2A constituted by a pair of side frame members 20L, a front tubular frame member 12 , a rear tubular frame member 13 , and a frame support portion 14 . In conjunction with Fig. 1, it can be clearly seen from Fig. 3 that a pivot pin 21 is formed on the rear end portion of each side frame member 20L, and the pivot pin 21 is rotatably inserted into the front upper end of each basic frame member 1 region, so that when the seat cushion 2 is turned up from the horizontal use position on the base frame member 1 to the upright non-use position close to the seat back 5, the above-mentioned pivot can be used to The pin/hole arrangement allows the seat cushion frame 20 to rotate about the pivot pin 21 .

It should be noted that, as shown by the dotted line in FIG. 2, the seat back frame 5A and the seat cushion frame 2A are appropriately decorated and padded, thereby constituting the seat back 5 and the seat cushion 2, respectively.

In one of the two slide rails 4, a known latch-type locking mechanism LM is provided for locking the upper rail 4B to the lower rail 4A, or unlocking the upper rail and the lower rail. The locking mechanism LM includes: A latch plate 42 having three locking pieces 42A; and a plurality of locking holes 43 formed in the bottom wall 4Aa of the lower rail 4A. The locking plate 42 is slidably fitted into the vertical cutout area 4Bs of the upper rail 4B so as to be movable vertically so as to engage in or disengage from a corresponding locking hole 43 out, so that the seat S can be unlocked so that it can be moved back and forth along the lower rail 4A, or the seat can be locked at a desired point on the lower rail 4A.

According to the present invention, the application provides a locking/unlocking actuating mechanism 3, which is located between the seat cushion 2 and the above-mentioned locking mechanism LM, and the user can use this mechanism when turning the seat cushion 2 up 3. The lock mechanism LM is activated to release the locked state of the seat S locked to the floor.

The locking/unlocking actuating mechanism 3 basically includes: an unlocking handle 38, a first rotating arm 32, a first connecting rod 31, a second rotating arm 34, a second connecting rod 35, a rotary actuator block 36, and a pitch actuator 41.

More specifically, the unlock handle 38 is rotatably provided below the front end portion of the seat cushion 2 . That is, the unlock handle 38 is fixed to a support shaft 37A, which is rotatably connected to the front tubular frame member 12 of the seat cushion frame 2A, so that it can be connected to the non-operating locked state shown in FIG. Turn between the unlocked states shown in Figure 4. A pull spring 39 is connected between the unlocking handle 38 and a fastening member (not shown in the drawings), which is fixed to the inner side of the side frame portion 20L of the seat cushion frame 2A, so that the unlocking handle 38 is normally biased towards the locked state by the spring 38 .

Reference numeral 37 designates a link, which is arranged in front of the seat frame 2A, at a position close to the unlock handle 38, the upper end of which is fixed to the above-mentioned support shaft 37A.

The first rotating arm 32 is arranged behind the seat frame 2A, and a connecting shaft 33 is formed at its upper end, and a threaded hole 33A is formed in the connecting shaft 33 .

The first connecting rod 31 is movably connected between these connecting parts 37 and the first rotating arm 32 in a certain manner, so that the front end of the first connecting rod is pivotally connected with the lower end of the connecting part 37 through a pin rod 31A and its rear end is pivotally connected with the lower end of the first rotating arm 32 through the pin rod 31B.

As can be clearly seen from FIG. 3, the connecting shaft 33 of the first rotating arm 32 is rotatably inserted into a hole 20 formed on the rear end portion of the side frame portion 20L and located close to The pin shaft 21 protrudes horizontally from a specific rear end area of the side frame portion 20L.

It can also be clearly seen from Fig. 3 that an arc-shaped guide hole 10 and a support hole 11 are formed on the upper end region of the basic frame member 1, and the guide hole 10 extends along the circumference of a circle, and the circle uses the support hole 11 is the center of the circle. The pin shaft 21 is rotatably inserted into the support hole 11 on the base frame member 1, whereby the cushion frame 2A can turn to the base frame member 1 or turn away from the base frame member in the vertical direction, so that the seat The pad 2 is turned up to the upright non-use state shown in FIG. 5 . On the other hand, the connecting shaft 33 of the first rotating arm 32 is slidably inserted through the arc-shaped guide hole 10 . Thus, it can be seen that the connecting shaft 33 can slide along the arc-shaped guide hole 10 while the seat cushion frame 2A rotates around the pin shaft 21 .

The connecting shaft 33 inserted through the arc-shaped guide hole 10 as described above is fixedly coupled with the upper end of the second rotating arm 34 . As shown in Figure 3, by passing a fastening screw 33B through a hole 34A that is made on the upper end of the second rotating arm 34, and screwing in the threaded hole 33A of the connecting shaft 33, the connecting shaft and the second The swivel arms 34 are fixedly coupled. One end of the second connecting rod 35 is pivotally connected to the lower end of the second rotating arm 34 through a pin rod 35A. The other end of the second link 35 is pivotally connected to one end region of the rotary actuating block 36 , and this end region on the actuating block 36 faces the front of the seat S.

The rotary actuating block 36 has a pressing rod 36B, which extends backward to the locking mechanism LM, and its front end is rotatably connected with the lower end of the base frame member 1 through a pin rod 36A, so as to be rotatable around the pin rod 36A. . The front end of the rotary actuating block 36 is pivotably connected to the lower end of the second link 35 , whereby the second link 35 is pivotally connected between the rotary arm 34 and the rotary actuating block 36 .

Herein, it can be seen from FIG. 2 that when the seat S is in the normal use state shown by the solid line, the unlocking handle 38 is in the locked position, thus, the locking/unlocking actuating mechanism 3 or all its components ( 31, 32, 33, 34, 36, 37 and other above-mentioned components) are all in a non-working state relative to the locking mechanism LM, in this state, the rotary actuating block 36 is kept in the non-working state shown in the figure, here , the pressurizing rod 36B extends horizontally rearward along a straight line.

The middle part of the pitch actuator 41 is rotatably connected to the upper end portion of the upper rail 4B through a pin rod 41A, and extends horizontally in parallel with the upper rail 4B, and the half portion 41-1 of the actuator extends backward and Across the latch plate 42 and pivotally connected with the latch plate 42 through a pin rod 42B, the other half of the actuator 41-2 extends forward and is parallel to the pressurizing rod 36B, but its height is lower than that of the pressurizing rod 36B. Press bar 36B.

Next, the working process of the seat S having the above-mentioned structure will be described with specific reference to FIGS. 2 , 4 and 5 .

First, in conjunction with the representation of FIG. 3, it can be seen from FIG. 2 that against the biasing force of the spring 39, the locking lever 38 is rotated forward (or counterclockwise) to an unlocked position in the direction shown by the arrow A1, This in turn causes the link 37 to simultaneously rotate in the counterclockwise direction, thereby moving the first link 31 in the forward direction A2. At the same time, the first rotating arm 32 is also cushioned in the counterclockwise direction, causing the connecting shaft 33 to rotate similarly, thereby making the second rotating arm 34 rotate around the connecting shaft 33 in the counterclockwise direction shown by the arrow A3 . Utilizing the rotation of the second rotating arm 34, the second link 35 moves upward in the direction indicated by the arrow A4, thereby causing the rotation actuating block 36 to rotate counterclockwise around the pin rod 36A in the direction indicated by the arrow A5, thereby causing the The pressing rod 36B is in contact with the other half 41 - 2 of the pitch actuator 41 , and rotates downward in the direction indicated by the arrow A6 , thereby applying pressure to the half 41 - 2 . As a result of this series of actions, the pitch actuator 41 rotates clockwise around the pin rod 41A in the direction indicated by the arrow A7, so that the latch plate 42 is moved upward to an unlocked position, so that the three locking pieces 42A can be aligned with the The corresponding three locking holes 43 are disengaged. This series of unlocking operations is also shown in Fig. 4, as can be seen from the accompanying drawing: the unlocking operation of the unlocking handle 38, and the rotation actuator 36, the pressurizing rod 36B and the pitch actuator 41 simultaneously produce The locking movement of all is represented by the arrow ①, and the movement that finally makes the latch plate 42 disengage upward from the lower rail 4A is also indicated by the arrow ①. As a result of this operation, the upper rail 4B is released from being locked to the lower rail 4A, thereby allowing the seat S to move back and forth in the directions indicated by the arrows in FIG. 4 .

Therefore, the user can move the seat S to a desired position point by such an operation: against the biasing force of the spring 39, the unlocking handle 38 is kept in the unlocked state shown in FIG. 4 by hand, and then, As shown by the arrow ② in Figure 2, the unlocking handle 38 is released to make it in an immovable locked state, thereby making the rotary actuating block 36 rotate clockwise in the direction shown by the arrow ②, and then by means of pitching The actuating member 41 causes the three locking pieces 42A of the latch plate 42 to engage in the selected three locking holes 43, so that the seat S is locked at the desired position on the lower rail 4A. It should be noted that in this locked state, under the biasing force of the spring 39, the latch plate 42 is forcibly held on the lower rail 4A.

After that, the user can turn the seat cushion 2 to the upright non-use state shown in FIG. 5 . As can be seen from the figure, at this time, due to the upward rotation or turning up of the seat cushion 2, the connecting shaft 33 starts from an initial position and slides counterclockwise along the arc-shaped guide hole 10 relative to the support shaft 21, wherein, at the beginning In the initial position, the seat cushion 2 is in a substantially horizontal use state, and the connecting shaft 33 is in contact with the upper end or upper edge of the arc guide hole 10 . That is to say, when the seat cushion 2 is turned up, the connecting shaft 33 moves from the upper edge of the arc-shaped guide hole 10 to the lower edge. This leaves a degree of freedom for the rotation of the connecting shaft 33 around the support shaft 21, thereby preventing the connecting shaft 33 from affecting the turning-up action of the seat cushion 2, and, in addition, it should also be pointed out that the connecting shaft 33 actually The upper is to move down along the arc hole 10, just as it will move the second connecting rod 35, the rotation actuation block 36, and the pitch actuation member 41 so that the latch plate 42 is disengaged from the locking hole 43, But the biasing force or pulling force of spring 39 can quickly pull back connecting shaft 33 to the initial position, and on starting position, connecting shaft 33 contacts with the upper edge of arc-shaped hole 10, can prevent latch plate thus 42 is disengaged from the locking hole 43. Thus, turning up of the seat cushion 2 will not cause the seat S to be unlocked from the lower rail 4A. Fig. 5 shows the state when the seat cushion 2 is turned up to the upright non-use position, and at the same time, the seat S is also locked on the lower rail 4, as can be seen from the accompanying drawing: the fastening screw 33B is located in the arc-shaped hole 10 This shows that the connecting shaft 33 is in contact with the upper edge of the arc-shaped hole 10 under the biasing force of the spring 39, thus, the rotary actuator block 36 and the pressing rod 36B are kept in a non-horizontal position. In the working state, no unlocking action is applied to the latch plate 42 .

As can be seen from FIG. 5 , in the upturned state of the seat cushion 2 , the second rotating arm 34 , the second connecting rod 35 , the rotating actuating block 36 , and the pitch actuating member 41 are all in the non-positive position for the latch plate 42 . Working state, so that the state of the latch plate 42 at this time is the same as the normal seating state of the seat shown in FIG. 2 . Thus, in this raised state, the unlocking handle 38 can be operated to disengage the latch plate 42 from the lower rail 4A. Since this unlocking operation is basically the same as the unlocking operation described above when the seat is in the normal state shown in FIG. 2 , only this process will be briefly described with reference to FIG. 5 . That is to say, as shown by the arrow in FIG. 5, against the biasing force of the spring 39, the unlocking handle 38 is rotated to the unlocking position in the counterclockwise direction, which in turn will impel the first link 31 to move upwards, thereby counterclockwise. The second rotating arm 34 is rotated clockwise, and then the second link 35, the rotation actuating block 36, and the pitch actuating member 41 are moved accordingly in the same manner as the process described above, utilizing the movement of these components , the latch plate 42 is also raised to the unlocked position according to the direction shown by the arrow ① in Fig. Move in the forward and backward direction. Also, in this case, the user can move the seat S to an ideal position point through such an operation: against the biasing force of the spring 39, the unlocking handle 38 is kept in the unlocked state by hand, and then the The unlocking handle 38 is released so that it is in an immovable locked state, so that the three locking pieces 42A of the latch plate 42 are engaged in the selected three locking holes 43, so that the seat S is locked on the lower rail. Ideal location point on 4A.

It should be noted that although not shown in the figure, if the user turns up the seat cushion 2 while keeping the unlocking handle 38 in the unlocked state, the connecting shaft 33 will slide along the arc hole 10 to the specific position. At the lower edge 10B of the arc-shaped hole 10, this will cause the second link 35 to move further upwards, thereby causing the rotary actuator block 36 to rotate further counterclockwise from the position shown in FIG. 36B moves to the extent that it is out of contact with the rear half 41-2 of the pitch actuator 41, thereby causing the pitch actuator 41 to automatically rotate to the horizontal non-working position shown in FIG. 2 under the gravity of the latch plate 42 , Then, the latch plate 42 descends to be engaged in the locking hole 43 . At this time, the pressing rod 36B of the rotary actuating block 36 is slightly rotated by an angle so as to be close to the other half 41 - 2 of the pitch actuating member 41 (that is, not to be in contact with this part). Then, when the user releases the unlocking handle 38 from the unlocking position, under the pulling force of the spring 39, the specific unlocking handle 38 is automatically reset to the locked position, which in turn will impel the connecting shaft 33 to slide back quickly. The upper edge of the arc-shaped hole 10. Therefore, the second rotating arm 34 and the second connecting rod 35 are all rotated to their respective non-working initial positions shown in FIG. 36B is in a horizontal non-action position, which is located above the other half 41 - 2 of the pitch actuator 41 as shown in FIG. 2 . Those skilled in the art can easily understand the above series of actions after reading the above description and understanding the accompanying drawings.

In any case, adopting the above-mentioned structural arrangement, the pin shaft 35A or the position for connecting the second rotating arm 34 and the second link 35 can be basically maintained at a fixed point, which allows the following In both cases, the locking/unlocking operation can be completed by operating the unlocking handle 38: the seat cushion turned up condition, in this case, the seat cushion 2 is turned upright to the non-use state; and the seat cushion use condition, in the In this case, the seat cushion 2 is in a substantially horizontal state of use.

Therefore, it can be seen that according to the present invention, there is no need to arrange any pull wires and cables between the seat cushion and the unlocking handle, thus, the structure is simplified and the assembly is easy.

Although the present invention has been described above, it should be understood that the present invention is not limited to the described embodiments, and that many modifications can be made to these embodiments without departing from the scope of protection defined by the appended claims. Modifications, substitutions and additions.

Claims (5)

1. one kind has the seat that seat cushion is dug structure, and it comprises:

One railroad, it comprises a rail device and a upper rail means, upper rail means engages slidably with following rail device, thereby makes described upper rail means shifting to forwards making progress and shifting on the backward directions at described seat rear and slide of described seat the place ahead along described down rail device;

One base frame device, itself and described upper rail means are permanently connected;

One seat cushion, wherein be provided with a seat cushion frame, described seat cushion frame is connected rotationally with described base frame device, thereby make the seat cushion frame can vertical rotation between the use location of a basic horizontal and a basic non-use position of erectting, make described seat cushion can upwards dig the non-use position of described basic setting thus from the use location of described basic horizontal, described seat cushion wherein has a leading section, its facing to described forwards to;

Described base frame device comprises: a location point, described seat cushion frame are pivotally connected on this location point; And an arcuate socket, this arcuate socket is that the circumference along a circle forms, this circle is the center of circle with described location point;

One lockable mechanism, it is used for that described upper rail means locked onto described down rail device or with described upper rail means and described time rail device release, described lockable mechanism comprises: a Locking Device, it is set at described going up in the rail, moving on one of them direction of locking direction and unlocking direction, when moving on the locking direction, it locks onto the described rail of going up on the described rail device down, when moving on unlocking direction, it is with described upward rail and described rail release down; And a rotary-actuated apparatus, it is arranged in the described top of rail device down rotationally, and is connected with described Locking Device realization work; And

One locking/release actuating mechanism, be used for described lockable mechanism is applied effect, described upper rail means locked onto on the described down rail device or will describedly go up rail and describedly descend the rail release, described locking/release actuating mechanism is set between described seat cushion and the described lockable mechanism, and comprises:

One release lever, it movably is arranged on the below of the described leading section of described seat cushion, and described release lever is in a lock position under normal conditions, and can be operated a unlocked position from this lock position;

One first connecting rod, it is along the longitudinal extension of described seat cushion, and can vertically move along described, and an end of described first connecting rod is connected with described release lever realization work;

One first pivot arm, it is arranged between described seat cushion and the described base frame device rotationally, and an end of described first pivot arm is operably connected with the other end of described first connecting rod is real;

One adapter shaft;

One second pivot arm, the one end is permanently connected by the other end of described adapter shaft and described first pivot arm;

Described adapter shaft interted from described arcuate socket slidably; And

One second connecting rod, it is operatively coupled between the described rotary-actuated apparatus of the other end of described second pivot arm and described lockable mechanism,

Wherein, when described release lever was set on the described lock position, described Locking Device was kept on described locking direction, thereby the described rail of going up is locked on the described rail down; And, described release lever can cause described first connecting rod generation to move to the operation of described unlocked position, thereby rotate described first pivot arm and second pivot arm simultaneously, described second connecting rod is produced to be moved, thereby rotate described rotary-actuated apparatus, and then on described unlocking direction, move described Locking Device, realize described go up rail and the described release of rail down thus; When rotating described seat cushion in vertical direction, described adapter shaft slides along described arcuate socket, so can avoid adapter shaft and described base frame device to produce movement interference.

2. seat according to claim 1 is characterized in that: an end of described second connecting rod and the described other end of described second pivot arm are pivotally connected to;

The described rotary-actuated apparatus of described lockable mechanism comprises:

One rotary-actuated, its be arranged on rotationally described back of seat and described go up in the rail one of on, a described rotary-actuated end and the described other end of described second connecting rod are pivotally connected to; And

One pitching actuated piece, it can rotate around the center of self, and described pitching actuated piece has another half part of one and half partial sums;

Described half part of described pitching actuated piece is pivotally connected to described Locking Device, and

When described release lever was in described lock position, described second half part of described pitching actuated piece was in the normal state, and is positioned at the below of described rotary-actuated the described other end; And on the other hand, described release lever can cause described rotary-actuated to rotate to the operation of described unlocked position, thereby the rotary-actuated described other end and described second half part of described pitching actuated piece are in contact with one another, so, under described rotary-actuated situation of further rotating, described pitching actuated piece can be rotated, thereby described half part is rotated, and then on described unlocking direction, move described Locking Device, thus with described upward rail and described rail release down.

3. seat according to claim 2 is characterized in that: fix a pressure rod on the described rotary-actuated described other end; When described release lever was in described lock position, described pressure rod was positioned at the top of described second half part of described pitching actuated piece; And on the other hand, described release lever can cause described rotary-actuated to rotate to the operation of described unlocked position, thereby described pressure rod is contacted with described second half part of pitching actuated piece, so, under described rotary-actuated situation of further rotating, described pitching actuated piece can be rotated, thereby described half part is rotated, and then on described unlocking direction, move described Locking Device, thus with described upward rail and described rail release down.

4. seat according to claim 1 is characterized in that: described seat cushion is disposed in the inboard of described base frame device; Described second connecting rod and described second pivot arm are disposed in the outside of described base frame device, and are shaped on a hole on the described seat cushion frame; Described first connecting rod and described first pivot arm all are disposed in the inboard of described seat cushion frame; Described adapter shaft passes described hole on the described seat cushion frame and the described arcuate socket on the described base frame device, so just with respect to described base frame device described first, second pivot arm is coupled together.

5. seat according to claim 1, it is characterized in that: be provided with bias unit, be used for described release lever is flexibly setovered to described lock position, described arcuate socket has two edges, under the condition that adopts this structure to be provided with, when described seat cushion is in the running condition of described basic horizontal, the effect of the described bias force of described bias unit is described release lever is flexibly remained on the described locking direction, and a described side edge of described adapter shaft and described arcuate socket is touched, thus described rotary-actuated apparatus is remained on the described unlocking direction forcibly, thereby keeping described rail and the described lock-out state of rail down gone up, and, when described seat cushion is upwards dug the non-use position of described basic setting, described adapter shaft from the described edge of described specific arcuate socket on the direction at another edge, slightly move along described arcuate socket, but under the bias force effect of described bias unit, adapter shaft is pulled back to described edge, so, no matter described seat cushion is the use location that is in described basic horizontal, still be in the non-use position of basic setting, described lockable mechanism and described locking/release actuating mechanism all are maintained under the off working state, under normal conditions described seat is remained in a certain state thus, in this state, seat is locked into a given position on the described rail down, also allow simultaneously described release lever is operated described unlocked position from described lock position, vice versa.

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