JP3907094B2 - Seat hinge device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat hinge device that supports a seat cushion or a seat back so that the seat cushion or a seat back can be rotated between a use position and a storage position, and that can be removed from a vehicle body when necessary.
[0002]
[Prior art]
An example of this type of conventional seat hinge device is described in Japanese Patent Laid-Open No. 10-264694.
[0003]
This hinge device combines a base bracket having a first shaft fixed to a floor and a hinge bracket having a second shaft fixed to the seat cushion side and pivotally attached to an S-shaped clip. By engaging the letter-shaped clip with the first shaft, the seat cushion can be rotated around the first shaft, and by removing the clip from the first shaft, the seat cushion can be removed from the floor. It is like that.
[0004]
[Problems to be solved by the invention]
However, since the conventional seat hinge device as described above uses parts such as a clip, the number of parts is large, and the clip must be attached to and detached from the first shaft every time the seat cushion is attached and detached. Is troublesome.
[0005]
An object of the present invention is to provide a seat hinge device that has a small number of parts and that can be easily attached and detached, in view of the above-described problems of conventional techniques.
[0006]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) to the vehicle body plate fixed to the vehicle body, the seat-side plate fixed to the seat is pivotally connected by a shaft which horizontally oriented, freely supported rotated between the use position and the storage position the sheet a seat hinge device, wherein the shaft which is fixed to one of the plates, along with connecting or disconnecting can fit in the axial direction of the shaft bearing portion provided on the other, the sheet and the sheet-side plate use position and only when in the vicinity thereof, engaged in the axial direction to each other, and engaging means for preventing movement in a direction to get out of the bearing portion of the shaft, the seat and the seat-side plate said storage position and Only when it is in the vicinity, it engages with each other in the axial direction at a place different from the place where the engaging means engage with each other, and prevents movement of the shaft in the direction of coming out of the bearing portion. Providing an engagement means.
[0007]
(2) In the above item (1) wherein the engagement means, the set on one of the plates vignetting, when the sheet and the sheet-side plate is in the use position, engages the edge of the other plate combined with, and shall have a stopper over to prevent movement in a direction to get out of the bearing portion of the shaft.
[0008]
(3) In the above paragraph (2), when the sheet and the sheet side plate are rotated toward the use position, the stopper is displaced from the normal position in the axial direction when the sheet and the sheet side plate are rotated. It is assumed that there is provided guide means for slidingly contacting a part of the other plate to forcibly push the sheet side plate in the axial direction and return it to the normal position .
[0009]
(4) In any one of the above items (1) to (3), the other engaging means protrudes from the shaft or the plate to which the shaft is fixed, and protrudes in a direction perpendicular to the shaft. A retaining projection that is provided on the plate on which the bearing portion is provided, and an engagement groove that engages with the retaining projection when the seat and the seat side plate are in the storage position. It shall be equipped with .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, at the rear of the front seat (3) fixed to the floor (2) of the vehicle body (1), the lower end is pivotally attached to the rear of the floor (2) by a hinge (5a). A rear seat (4) including a seat back (5) and a seat cushion (6) detachably attached to the floor (2) is disposed. The seat back (5) is used as a standing position indicated by an imaginary line in FIG.
[0011]
The seat cushion (6) has a front end portion (6a) lower surface is pivotally supported by the seat hinge device (7), and a use position in the horizontal position shown in phantom in FIG. 1, as indicated by the solid line rear end (6b) can be lifted and moved to the stowed storage position. After moving the seat cushion (6) to the storage position, as shown by the solid line in FIG. 1, the indoor space is increased by tilting the seat back (5) to a horizontal position parallel to the floor (2). Can do.
[0012]
Furthermore, when it is necessary to increase the indoor space, when the seat hinge device (7) is separated and the seat cushion (6) is removed from the floor (2), the seat cushion (6) is removed until then. The space that has stood up and occupied can be used as an indoor space, and a vast indoor space can be obtained.
[0013]
Next, details of the seat hinge device (7) will be described with reference to FIGS.
The same seat hinge device (7) is attached to the left and right sides of the seat cushion (6) one by one , and each is attached to the floor (2) of the vehicle body (1) with bolts (8). A plate (9), a seat side plate (11) attached with bolts (10) to a mounting portion (6c) on the lower surface of the front end (6a) of the seat cushion (6), a seat side plate (11) and the vehicle body side It is comprised by the hinge pin (12) which faces the left-right direction (axial direction) which connects a plate (9) so that rotation is possible.
[0014]
The vehicle body side plate (9) is formed into a cylindrical shape by pressing the attachment portion (9a) fixed to the floor (2) of the vehicle body (1) and the front edge (9b) of the right half of the attachment portion (9a). And a formed bearing portion (9c). The bearing portion (9c) faces in the left-right direction, and the hinge pin (12) is rotatably inserted therein.
[0015]
FIG. 3 is an exploded perspective view of the seat hinge device (7) before connecting the vehicle body side plate (9) and the seat side plate (11). The diagonally upper part is the “rear” of the vehicle body.
[0016]
At the front edge (9b) of the left half of the mounting portion (9a), a vertical wall-like stopper (9d) bent upward is adjacent to the bearing portion (9c), and the shaft of the bearing portion (9c) It is formed along the direction. The rear surface of the stopper (9d) also serves as a guide when the hinge pin (12) is inserted into the bearing portion (9c). At the boundary between the stopper (9d) and the bearing portion (9c), an engagement groove (9e) that opens upward and forms another engagement means is formed. At the corner of the stopper (9d) on the side of the engaging groove (9e), an inclined edge (9f) is formed which is cut obliquely and serves as a guide means for a retaining protrusion (12c) described later.
[0017]
A stopper (9g) as an engaging means is provided upright on the left edge of the attachment portion (9a) of the vehicle body side plate (9). A guide surface (9h) serving as a guide means is extended at the front end portion of the stopper (9g) by being bent obliquely upward to the left.
[0018]
The seat side plate (11) includes a mounting portion (11a) fixed to the bottom surface side of the seat cushion (6), and a shaft fixing portion (11b) formed into a cylindrical shape by pressing at the front edge of the mounting portion (11a). ). As shown in FIG. 7, the left side edge portion (11d) of the attachment portion (11a) is located when the seat side plate (11) is in the horizontal position corresponding to the use position of the seat cushion ( 6 ) and its vicinity. Only the engaging means comes into contact with the stopper ( 9g ) of the vehicle body side plate (9) in the axial direction. The cylindrical shaft fixing portion (11b) faces in the left-right direction, and a hinge pin (12) is press-fitted in the shaft fixing portion (11b).
[0019]
As shown in FIG. 4, the hinge pin (12) includes a press-fit portion (12a) that is press-fitted to the shaft fixing portion (11b) and a pivot portion (12b) that has a larger diameter than the press-fit portion (12a). , the stepped portion between the pivot portion of the press fit portion (12a) (12b), projecting in a direction perpendicular to the axis of the hinge pin (12), and as shown in FIG. 8, the sheet-side plate (11) is, Only when the seat cushion ( 6 ) is in the upright position corresponding to the stowed position and in the vicinity thereof, the locking groove (9e ) is formed with a retaining protrusion (12c) that forms another engaging means that can be engaged in the axial direction. Has been. The retaining protrusion (12c) engages with a rotation stopper recess (11c) provided on the right end surface of the shaft fixing portion (11b).
[0020]
Next, the operation of the seat hinge device (7) configured as described above will be described. 5 and 6 illustrate the detaching operation of the seat hinge device (7). In order to attach the seat cushion (6) to the floor (2), first, as shown in FIG. 5, the seat side plate (11) is at an angle of approximately 45 ° with respect to the vehicle body side plate (9), and the hinge pin ( The pivot portion (12b) of 12) is brought into contact with the rear surface of the stopper (9d). In this state, the pivot portion (12b) is positioned on the axis of the bearing portion (9c). Since the insertion position of the pivot portion (12b) with respect to the bearing portion (9c) is generally determined by the stopper (9d), positioning during assembly is extremely easy.
[0021]
When the seat side plate (11) is at an angle of approximately 45 ° with respect to the vehicle body side plate (9), the side edge (11d) of the seat side plate (11) does not contact the stopper (9g) Further, the retaining protrusion (12c) is not engaged with the engaging groove (9e).
[0022]
Thereafter, when the hinge pin (12) is axially displaced along the stopper (9d) and the pivot portion (12b) is inserted into the bearing portion (9c) as shown in FIG. 6, the seat side plate (11) The side plate (9) is rotatably connected. In this state, the seat side plate (11) is movable between a horizontal position shown in FIG. 7 corresponding to the use position of the seat cushion (6) and a standing position shown in FIG.
[0023]
In order to remove the seat side plate (11) from the vehicle body side plate (9), the above operation is reversed. Chi words, the sheet over preparative side plate (11), from a horizontal position or standing position of Figure 8 in FIG. 7, as shown in FIG. 6, after turning on the detachable position between the horizontal position and the upright position Then, the pivot part (12b) of the hinge pin (12) may be moved in the axial direction and extracted from the bearing part (9c).
[0024]
When the seat cushion (6) is in the use position, the attachment portion (11a) of the seat side plate (11) and the attachment portion (9a) of the vehicle body side plate (9) are overlapped and become parallel. At this time, the side edge portion (11d) of the seat side plate (11) is axial with respect to the stopper (9g) of the vehicle body side plate (9), that is, the pivot portion (12b) of the hinge pin (12) is the bearing portion. It is possible to engage in the direction extracted from (9c). Therefore, even if a lateral load is applied to the seat cushion (6) due to rolling or the like during traveling, and the pivot portion (12b) is about to come out from the bearing portion (9c), the side edge portion of the seat side plate (11) ( 11d) comes into contact with the stopper (9g) to prevent it from coming out. Even when the seat side plate (11) moves slightly in the axial direction while moving the seat cushion (6) to the use position, the side edge (11d) of the seat side plate (11) remains on the stopper (9g). By making sliding contact with the guide surface (9h) formed at the tip, the sheet side plate (11) is forcibly pushed in the axial direction and returned to the normal position.
[0025]
When the seat cushion (6) is rotated forward from the use position to the retracted position, the pivot portion (12b) of the hinge pin (12) rotates in the bearing portion (9c), and the retaining protrusion (12c) It enters into the engaging groove (9e) of the side plate (9). In this state, as shown in FIG. 8, when the seat cushion ( 6 ) is in the use position, it is different from the position where the seat cushion ( 6 ) is engaged ( the position where the side edge (11d) and the stopper (9g) are engaged with each other). At this point, the retaining protrusion (12c) engages with the stopper (9d) of the vehicle body side plate (9) in the axial direction in which the pivot portion (12b) of the hinge pin (12 ) comes out of the bearing portion (9c). To do . Accordingly, the pivot portion (12b) is prevented from coming off from the bearing portion (9c).
[0026]
In the middle of moving the seat cushion (6) to the stowed position, even if the seat side plate (11) moves slightly in the axial direction, the locking protrusion (12c) is formed at the inclination formed at the entrance of the engagement groove (9e). By sliding to the edge (9f), the sheet side plate (11) is forcibly returned to the normal position.
[0027]
The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, the retaining protrusion (12c) may be provided integrally with the sheet side plate (11) or by fusion.
[0028]
Further, the mounting position relationship between the vehicle body side plate (9) and the seat side plate (11) is reversed, that is, the vehicle body side plate (9) is mounted on the seat side and the seat side plate (11) is mounted on the vehicle body side. Alternatively, the heat hinge position of the present invention can be applied to the hinge device of the seat back (5).
[0029]
【The invention's effect】
According to the present invention, the following effects can be achieved.
(a) According to the invention described in claim 1, since it is composed of two members, the number of parts is small, and the attaching / detaching operation can be performed simply by rotating the seat side to a predetermined angle and moving it in the axial direction. It is very easy because it is good.
[0030]
(b) According to the second aspect of the invention, the edge of one plate with a simple structure only provided a stopper over, it is possible to easily form the engagement means, it is provided with strength superior Can do.
[0031]
(c) According to the invention described in claim 3, even when the seat side plate is slightly displaced in the direction in which the shaft is pulled out from the bearing portion during the rotation operation of the seat, the displacement can be automatically corrected. I can .
[0032]
(d) According to the fourth aspect of the present invention, when the retaining protrusion is engaged with the engaging groove, it is possible to prevent the shaft from moving in both directions, that is, the direction of withdrawal of the shaft and the opposite direction .
[Brief description of the drawings]
FIG. 1 is a schematic longitudinal side view of a seat mounting portion of a vehicle including an embodiment of the present invention.
FIG. 2 is a perspective view showing a state where the seat cushion is removed.
FIG. 3 is an exploded perspective view of the seat hinge device.
FIG. 4 is an exploded perspective view of a seat side hinge, similarly;
FIG. 5 is a perspective view of the heat hinge device when the seat side plate is connected to the vehicle body side plate.
FIG. 6 is a perspective view of the seat hinge device when the seat side plate is in a detachable state.
FIG. 7 is a perspective view of the seat hinge device when the seat side plate is in the use position.
FIG. 8 is a perspective view of the seat hinge device when the seat side plate is in the storage position.
[Explanation of symbols]
(1) Body
(2) Floor surface
(4) Rear seat
(5) Seat back
(5a) Hinge
(6) Seat cushion
(6a) Front end
(6b) Rear end
(7) Seat hinge device
(9) Body side plate
(9a) Mounting part
(9b) Tip
(9c) Bearing part
(9d) Stopper
(9e) Engaging groove ( other engaging means)
(9f) Inclined edge (guide means)
(9g) Stopper (engagement means)
(9h) Guide surface (guide means)
(11) Seat side plate
(11a) Mounting part
(11b) Shaft fixing part
(11c) Recess
(11d) Side edge (engaging means)
(12) Hinge pin (shaft)
(12a) Press fit part
(12b) Axis
(12c) Retaining protrusion ( other engaging means)

Claims (4)

The vehicle body side plate fixed to the vehicle body, the seat-side plate fixed to the seat is pivotally connected by a shaft which horizontally oriented, seat hinge apparatus for rotatably supported between a stowed position and a use position the seat In
There wherein the shaft which is fixed to one of the plates, along with connecting or disconnecting can fit in the axial direction of the shaft bearing portion provided on the other, to the seat and the seat-side plate use position and its vicinity only when only engage in the axial direction to each other, and engaging means for preventing movement in a direction to get out of the bearing portion of the shaft, said sheet and said sheet side plate is in said storage position and its vicinity when And other engaging means for engaging each other in the axial direction at a place different from the place where the engaging means are engaged with each other and preventing movement of the shaft in the direction of coming out of the bearing portion. A seat hinge device. Said engaging means, said set to one of the plates vignetting, when the sheet and the sheet-side plate is in the use position, engages the edge of the other plate, the bearing portion of the shaft seat hinge apparatus according to claim 1, wherein comprises a stop over for preventing movement in a direction to get out. The stopper is in sliding contact with a part of the other plate when the sheet and the sheet side plate are rotated toward the use position when the sheet side plate is displaced from the normal position in the axial direction. 3. A seat hinge device according to claim 2, further comprising guide means for forcibly pushing the seat side plate in the axial direction to return it to the normal position . The other engaging means protrudes from the shaft or the plate to which the shaft is fixed, and comes to a plate provided with the retaining portion and a retaining projection that protrudes in a direction perpendicular to the shaft. The seat hinge according to any one of claims 1 to 3 , further comprising an engagement groove that is provided and engages with the retaining projection when the seat and the seat side plate are in the storage position. apparatus.

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