JP2001322466A - Junior seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a junior seat capable of providing a satisfactory sitting feeling. SOLUTION: This junior seat 103 comprises a four-joint link mechanism for liftably supporting the seat 103 formed of a lower base 101, an upper base 105, a front link 107 and a rear link 113; a lower trans link 121 having one end rotatably mounted on a rear lower pin 115; an upper trans link 123 having one end rotatably mounted on the middle of the front link 107 through a front link pin 127 and the other end side rotatably mounted on the other end side of the lower trans link 121 through a striker shaft (trans link pin) 125; and a first lock mechanism for prohibiting the relative movement of the lower trans link 121 and the upper trans link 123 when the junior seat 103 is in the highest position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a junior seat which is incorporated in a seat and which can be raised and lowered between a storage position where the seat cushion is at the same height as another seat cushion and a raised position which is higher than the other seat cushion. .

[0002]

2. Description of the Related Art The structure of a conventional junior seat will be described with reference to FIGS. FIG. 4 is a view for explaining a configuration of a main part of a conventional junior seat at a raised position, and FIG. 5 is a view when the junior seat of FIG.

In the figure, a lower base 1 is provided on the floor side.
However, an upper base 5 is provided on the seat cushion frame side of the junior seat 3. Front link 7
The front lower pin 9 has one end on the front side of the lower base 1.
The other end is rotatably attached to the front side of the upper base 5 using a front upper pin 11.

One end of the rear link 13 is rotatably mounted on the rear side of the lower base 1 by using a rear lower pin 15, and the other end is rotatably mounted on the rear side of the upper base 5 by using a rear upper pin 17.

Accordingly, a four-bar linkage is formed by the lower base 1, the upper base 5, the front link 7, and the rear link 13, and the junior seat 3 is supported so as to be able to move up and down.

A guide 21 is formed on the front link 7 along the longitudinal direction of the link. On the other hand, one end of the transformer link 25 is rotatably attached to the rear lower pin 15.

A pin 23 movably engaged with the guide 21 is provided on the other end of the trans link 25. And, when it is at a position above the other sheet (see FIG. 4), a lock mechanism for inhibiting the movement of the pin 23 is provided.
(Not shown) keeps the position of the junior seat 3.

[0008]

However, in the junior seat having the above structure, when the junior seat 3 is raised and lowered, the pins 23 move along the guides 21, that is, the connection between the pins 23 and the guides 21 is not established. , "Slip pair", a relatively large clearance is required between the pin 23 and the guide 21 in consideration of component accuracy and assembly accuracy.

Due to this clearance, the junior seat 3 has a play in the front-rear direction, which causes a problem that the seating feeling is poor. The present invention has been made in view of the above problems, and an object thereof is to provide a junior seat having a good seating feeling.

[0010]

According to a first aspect of the present invention, there is provided a seat which is incorporated in a seat, the seat cushion of which is located at the same height as another seat cushion and which is raised above another seat cushion. A lower base provided on the floor side, an upper base provided on the junior seat side, and one end side rotated using a front lower pin on the front side of the lower base. A front link, the other end of which is rotatably attached to the front side of the upper base using a front upper pin, and one end of which is rotatably attached to the rear side of the lower base using a rear lower pin, A rear end is rotatably mounted on the rear side of the upper base using a rear upper pin. A four-link mechanism for supporting the junior seat so as to be able to move up and down, and a first transformer link rotatably attached to one of the four-links at one end thereof; One end of the joint link mechanism is rotatably attached to a link other than the link to which the first transformer is attached, and the other end is connected to the other end of the first transformer link by a translink pin. A second translink rotatably mounted using the first translink and a first translink prohibiting a relative displacement between the first translink and the second translink when the junior seat is in the raised position. A junior seat provided with a lock mechanism.

[0011] A first transformer link having one end side rotatably attached to one of the four-bar links and a link other than the link to which the first transformer of the four-bar link is attached. One end side is rotatably mounted, and the other end side uses the other end side of the first transformer link and a second transformer link rotatably mounted using a translink pin. Thus, the first and second translinks are all connected in a "circular pair" that requires less clearance than in a "slip pair".

Therefore, the amount of backlash in the front-rear direction is reduced, and the seating feeling is improved. According to a second aspect of the present invention, the first transformer link according to the first aspect of the invention is rotatably attached to the rear lower pin, and the second transformer link has a front link pin at an intermediate portion of the front link. A junior seat, wherein the junior seat is rotatably mounted by using a jig.

[0013] The first transformer link is rotatably mounted on the rear lower pin of the four-bar linkage, so that it is not necessary to separately provide a pin for rotatably mounting the first trans link, thereby reducing the number of parts. can do.

According to a third aspect of the present invention, there is provided the first or second aspect.
The first lock mechanism of the invention described in the claims is provided with a hook provided rotatably and having a lock groove capable of engaging and disengaging the translink pin, and a hook in a direction in which the lock groove engages with the translink pin. First biasing the hook
And a lever provided on the upper base side and rotating the hook in a direction in which the hook can be disengaged from the lock groove against the urging force of the urging means. It is a junior seat characterized by the following.

By using a hook having a lock groove capable of engaging and disengaging the trans link pin, it is not necessary to separately provide a component which engages with the lock groove, and the number of parts can be reduced.

According to a fourth aspect of the present invention, there is provided a junior seat wherein the hook according to the third aspect of the invention is rotatably attached to the front upper pin. Since the hook is rotatably provided using the front upper pin, it is not necessary to separately provide a pin for rotatably supporting the hook, and the number of parts can be reduced.

The invention according to claim 5 is the invention according to claim 3 or 4.
A junior seat according to the invention, wherein one end of the first urging means is locked by the hook, and the other end is locked by the lever.

One end of the first biasing means is locked by the hook and the other end is locked by the lever, so that the lock groove engages with the translink pin. And the lever is urged in the locking direction.

Therefore, even if an impact acts on the junior seat, the first lock mechanism is prevented from being unlocked. According to a sixth aspect of the present invention, in the first aspect of the present invention, one end is locked to one of the four-bar links, and the other end is the first transformer link. The junior seat is locked to any of the second translinks, and is neutral at an intermediate position between the raised position and the storage position of the junior seat. In the raised position, the upper base is lowered in the storage position. , The first trans link in a direction in which the upper base rises,
A junior seat provided with a second urging means for urging any one of the second translinks.

One end of the junior seat is locked to one of the four-bar links, and the other end is locked to one of the first and second trans-links. The first transformer link and the first transformer link are neutral in a middle position between a raised position and a storage position, in the raised position in a direction in which the upper base is lowered, and in the storage position, in a direction in which the upper base is raised. By providing the second urging means for urging one of the two translinks, the initial movement at the time of elevating and lowering the junior seat is assisted, and the first translink and the second translink are moved in accordance with the elevating and lowering of the junior seat. The translink moves to Sooms.

According to a seventh aspect of the present invention, in the first aspect of the invention, the second lock mechanism for inhibiting the upper base from rising when the junior seat is at the storage position is provided. It is a junior seat provided.

When the junior seat is in the retracted position, the second lock mechanism for inhibiting the upper base from being raised is provided, so that the junior seat in the retracted position can be moved even if a large impact acts on the vehicle. Movement is prevented.

As an example of the second lock mechanism, there is a mechanism in which the lever is provided with an engagement portion which can be engaged with and disengaged from the front link. By forming the engagement portion on the lever, the operation levers of the first and second lock mechanisms can be shared.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view when the junior seat of the embodiment of the present invention is in the raised position, FIG. 2 is a side view when the junior seat in FIG. 1 is in the storage position, and FIG. 3 is a view of the upper base in FIG. It is the top view which removed the bridge part of the top surface and the lower translink.

First, a mechanism for supporting the junior seat so as to be able to move up and down will be described. In FIG. 1, a lower base 101 provided on the floor side is a junior seat 103.
Upper base 105 on the seat cushion frame side
Is provided.

On both sides of the lower base 101 and the upper base 105, standing wall portions 101a and 105a facing each other are provided.
Are formed. In the present embodiment, a mechanism for elevating and lowering the junior seat 103 is provided on both sides, but since it has the same configuration, the description will be made using the mechanism on one side, and the same portion of the mechanism on the other side will be described. Indicates a number with “′ (dash)”, and redundant description is omitted.

One end of the front link 107 is rotatably attached to the front side of the standing wall portion 101a of the lower base 101 by using a front lower pin 109. As shown in FIG. 3, in this embodiment, the front links 107, 107 'provided on both sides are
It is integrated through a bridge 107 ″.

The upstanding wall 10 of the upper base 105
A front upper bar 111 as a front upper pin is provided between 5a and 105a ', and the other end of the front link 107 is rotatably attached to the front upper bar 111.

The rear link 113 has a lower base 1 at one end.
The rear end of the upper base 105 is rotatably attached to the rear side of the upper base 105 using a rear upper pin 117.

As shown in FIG. 3, in the present embodiment, rear links 113, 1 provided on both sides are provided.
13 'are integrated via a bridge 113 ".
Therefore, these lower base 101, upper base 105,
A four-link mechanism is formed by the front link 107 and the rear link 113, and the junior seat 103 is supported so as to be able to move up and down.

One end of the lower transformer link 121 as the first transformer link is rotatably attached to the rear lower pin 115. A striker shaft 125 as a translink pin is provided on the other end side of the lower trans link 121 and the other end side of the lower trans link 121 'on the other side so as to bridge the two. Have been.

One end of the upper translink 123 as the second translink has a front link 107.
Is rotatably attached to a middle portion of the striker shaft 127 using a front link pin 127, and the other end side is a striker shaft 1
25 is rotatably mounted.

Next, a first prohibition of relative displacement between the lower trans link 121 and the upper trans link 123 is performed.
Will be described. A lever 141 is provided at the front of the upper base 105 so as to be movable in a direction substantially perpendicular to the front upper bar 111 (directions of arrows I and II).

A hook 133 having a lock groove 131 with which the striker shaft 125 can be disengaged is rotatably attached to the front upper bar 111. On the back of the hook 133, a front upper bar 111 is provided.
And a transmission portion 135 extending to the lever 141 and engaging with the lever 141 is formed.

Further, the hook 133 is locked by a spring (first biasing means) 143 having one end locked to the transmission portion 135 of the hook 133 and the other end locked to the lever 141. Groove 131 is striker shaft 1
25 and the lever 141
In the direction of arrow II (lock direction).

In the present embodiment, the length and the upper of the lower transformer link 121 are set so that the striker shaft 125 can be engaged with the lock groove 131 of the hook 133 when the junior seat 103 is at the raised position. The mounting position and length of the trans link 123 with respect to the front link 109 are set.

Therefore, when the junior seat 103 is raised from the storage position to the raised position, the striker shaft 1
25 engages with the lock groove 131 of the hook 133, and the lock at the raised position is performed.

In a state where the lock groove 131 of the hook 133 is engaged with the striker shaft 125,
Pushing the lever 141 in the direction of arrow I (unlocking direction) against the urging force of the spring 143 and rotating the hook 133, the lock groove 131 can be disengaged from the striker shaft 125. 103 can be lowered.

Next, when the junior seat 103 is at the storage position, a second prohibition of lifting of the junior seat is prohibited.
Will be described. A hook portion 147 having a hook shape is formed on the lever 141.

On the other hand, the bridge 10 of the front link 107
At 7 ″, a hook portion 108 is formed to which the hook portion 147 of the lever 141 can be engaged and disengaged when the junior seat 103 is in the storage position (see FIG. 2).

Therefore, when the junior seat 103 is lowered to the storage position, the hook portion 147 of the lever 141 engages with the hook portion 108 of the front link 107, and is in the storage position even if a large impact acts on the vehicle. The junior seat 103 is prevented from moving.

In this state, the lever 141 is pushed in the direction of the arrow I (lock release direction) against the urging force of the spring 143, so that the hook portion 147 of the lever 141 is pressed.
Is detached from the hook portion 108 of the front link 107,
The junior seat 103 can be raised.

Further, in the present embodiment, one end side is locked to the bridging portion 107 ″ of the front link 107,
A torsion bar 161 is provided as second urging means for urging the upper translink 123 in the direction in which the upper base 105 descends, with the other end side locked to the upper translink 123.

This torsion bar 161 is neutral at an intermediate position between the raised position of the junior seat 103 and the storage position,
At the ascending position, the upper base 105 is set so as to urge in the downward direction, and at the storage position, the upper base 105 is urged in the upward direction.

A leaf spring 171 is provided on the upper base 105, and when the occupant sits on the junior seat 103, the leaf spring 171 in the solid line position is bent to the two-dot chain line position as shown in FIG. A stopper 173 formed on the lower surface of the spring 171 is lowered to a position where it comes into contact with the lever 141 through the hole 106 formed in the upper base 105, so that the movement of the lever 141 in the unlocking direction (I direction) is prohibited. I have to.

According to the above configuration, the following effects can be obtained. (1) A lower transformer link 121 whose one end is rotatably attached to the rear lower pin 115, one end which is rotatably attached to the front link using a front link pin 127, and whose other end is a lower transformer link 12.
By using the upper trans link 123 rotatably mounted on the other end side of the first trans link using the striker shaft 125, the lower trans link 121 and the upper trans link 123 are all more clearance than the "slip pair". Are connected in a "circular pair", which requires less.

Therefore, the amount of backlash in the front-rear direction is reduced, and the seating feeling is improved. (2) The lower transformer link 123 is rotatably attached to the rear lower pin 115 of the four-bar link mechanism.
There is no need to separately provide a pin for rotatably attaching the lower transformer link 123, and the number of parts can be reduced.

(3) The lock groove 131 of the hook 133 is engaged with and disengaged from the striker shaft 125 which is a pair of turns connecting the lower trans link 121 and the upper trans link 123. Need not be separately provided, and the number of parts can be reduced.

(4) Connect the hook 133 to the front upper bar 1
11 so that the hook 13 can be rotated.
There is no need to separately provide a pin for rotatably supporting the component 3, and the number of components can be reduced.

(5) The provision of the torsion bar 161 assists the initial movement of the junior seat 103 when ascending and descending.
The lower trans link 121 and the upper trans link 123 move smoothly according to the elevation of the junior seat 103.

(6) One end of the spring 143 is 133
Since the hook 133 is locked by the hook and the other end is locked by the lever 141, the hook 133 is urged in a direction in which the hook 133 lock groove 131 is engaged with the striker shaft 125, and the lever 141 is locked in the locking direction. It is urged to.

Therefore, even if an impact acts on the junior seat, the first lock mechanism is prevented from being unlocked. (7) When the junior seat is in the storage position, the second lock mechanism that inhibits the upper base 105 from being raised is provided. Movement is prevented.

(8) By providing the hook portion 147 to the lever 141 for releasing the lock of the hook 133, the lock at the raised position and the lock at the storage position can be released by one lever 141.

The present invention is not limited to the above embodiment. In the above embodiment, one end of the lower trans link 121 is rotatably provided on the rear lower pin 115, and one end of the upper trans link 123 is rotated using a front link pin 127 at an intermediate portion of the front link 107. Although one transformer link is rotatably attached to one of the links of the four-bar linkage including the lower base 101, the upper base 105, the front link 107, and the rear link 113, one of the other links is provided. What is necessary is just to rotatably attach the end side to a link other than the link to which one link is attached.

In the above embodiment, one end of the torsion bar 161 is engaged with the front link 107 and the other end of the torsion bar 161 is engaged with the upper transformer link 123. Any one of the lower base 101, the upper base 105, and the rear link 113,
The other end may be locked to the lower transformer link 121.

[0056]

As described above, according to the first aspect of the present invention, the first transformer link whose one end is rotatably attached to any one of the four-bar links, One end of the node link is rotatably attached to a link other than the link to which the first transformer is attached, and the other end is connected to the other end of the first transformer link with a translink pin. With the use of a second translink rotatably mounted on the first and second translinks, all of the first and second translinks are connected in a "twisted pair" that requires less clearance compared to a "slip pair". ing.

Therefore, the amount of backlash in the front-rear direction is reduced, and the seating feeling is improved. According to the second aspect of the present invention, the first trans link is rotatably mounted on the rear lower pin of the four-bar linkage, so that a separate pin for rotatably mounting the first trans link is not provided. And the number of parts can be reduced.

According to the third aspect of the present invention, by using the hook having the lock groove capable of engaging and disengaging the trans link pin, there is no need to separately provide a component for engaging and disengaging the lock groove. The score can be reduced.

According to the fourth aspect of the present invention, since the hook is rotatably provided by using the front upper pin, it is not necessary to separately provide a pin for rotatably supporting the hook, and the number of parts can be reduced. Can be.

According to the fifth aspect of the present invention, one end of the biasing means is locked by the hook and the other end is locked by the lever, so that the lock groove is formed in the transformer. The hook is urged in the direction engaging with the link pin, and the lever is urged in the locking direction.

Therefore, even if an impact acts on the junior seat, the first locking means is prevented from being unlocked. According to the invention as set forth in claim 6, one end is locked to one of the four-bar links, and the other end is connected to one of the first trans link and the second trans link. The junior seat is neutral at an intermediate position between the raised position and the storage position of the junior seat, and at the raised position, in a direction in which the upper base descends, at the storage position,
By providing a second urging means for urging either the first trans link or the second trans link in a direction in which the upper base is raised, the initial movement of the junior seat when ascending and descending is assisted. Then, the first translink and the second translink move to Sooms in accordance with the elevation of the junior seat.

According to the seventh aspect of the present invention, when the junior seat is at the storage position, the second lock mechanism for inhibiting the upper base from rising is provided.
Even if a large impact acts on the vehicle, the junior seat at the storage position is prevented from moving.

[Brief description of the drawings]

FIG. 1 is a side view when a junior seat according to an embodiment of the present invention is in a raised position.

FIG. 2 is a side view when the junior seat of FIG. 1 is in a storage position.

FIG. 3 is a top view of the upper base of FIG. 2 from which a top surface and a bridge portion of a lower trans link are removed.

FIG. 4 is a diagram illustrating a configuration of a main part of a conventional junior seat at a raised position.

FIG. 5 is a view when the junior seat of FIG. 4 is in a storage position.

[Explanation of symbols]

 101 Lower Base 103 Junior Seat 105 Upper Base 107 Front Link 109 Front Lower Pin 111 Front Upper Bar (Pin) 113 Rear Link 115 Rear Lower Pin 117 Rear Upper Pin 121 Lower Trans Link (First Trans Link) 123 Upper Trans Link (Second Trans Link) ) 125 striker shaft (trans link pin) 127 front link pin

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masato Horie 2nd Kiririhara-cho, Fujisawa-shi, Kanagawa F-term (reference) in Shiroki Industry Co., Ltd. 3B084 BA00 3B087 CE03 DA09 DE02

Claims (7)

[Claims] 1. A junior seat which is incorporated in a seat and which can be raised and lowered between a storage position where the seat cushion is at the same height as another seat cushion and a raised position which is higher than the other seat cushion, provided on the floor side. A lower base provided on the junior seat side, and one end side is rotatably attached to a front side of the lower base using a front lower pin, and the other end side is a front side on a front side of the upper base. A front link rotatably mounted using an upper pin; one end side rotatably mounted using a rear lower pin on a rear side of the lower base, and the other end side rotatable using a rear upper pin on a rear side of the upper base. A four-bar joint that supports the junior seat so that it can move up and down with the attached rear link. A first transformer link, one end of which is rotatably attached to one of the links of the four-bar linkage, and a link to which the first transformer of the four-bar link is attached. A second transformer link rotatably mounted at one end side to the other link, and rotatably mounted at the other end side to the other end side of the first transformer link using a translink pin. And when the junior seat is in the raised position, the first
A junior seat, comprising: a translink of the formula (1), and a first locking mechanism for inhibiting relative displacement between the translink and the second translink. 2. The first trans link is rotatably attached to the rear lower pin, and the second trans link is rotatably attached to an intermediate portion of the front link using a front link pin. The junior sheet according to claim 1, wherein: 3. The first lock mechanism is rotatably mounted and has a hook formed with a lock groove capable of engaging and disengaging the translink pin, and a direction in which the lock groove engages with the translink pin. A first urging means for urging the hook, and a hook provided on the upper base side, wherein the hook is disengaged from the lock groove in a direction in which the hook can be detached from the lock groove against an urging force of the urging means. The junior seat according to claim 1, wherein the junior seat is constituted by: a rotating lever; 4. The junior seat according to claim 3, wherein the hook is rotatably attached to the front upper pin. 5. The junior according to claim 3, wherein one end of the first biasing means is locked by the hook, and the other end is locked by the lever. Sheet. 6. One end of the four-link is locked to one of the four-bar links, the other end of the first transformer link,
The junior seat is locked at any position between the raised position and the retracted position of the junior seat. At the raised position, the upper base descends. A second urging means for urging one of the first trans link and the second trans link in a direction in which the upper base rises, is provided. The junior sheet according to any one of the above. 7. The junior seat according to claim 1, further comprising a second lock mechanism for prohibiting the upper base from rising when the junior seat is at the storage position. .