JP2006264592A - Retractable seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify storing operation of a vehicle seat and make the installation space for a storage device compact. <P>SOLUTION: An retractable seat for a vehicle has the storage device 40 to put the seat 10 in the retracted state by putting it down from the service position to the retracted position situated below the service position. The storage device 40 has a link member 41 and a torque transmitting means. The link member 41 has one end coupled with a floor side member attached to the floor by a floor side coupling shaft in such a way as rotatable axially and other end coupled with a seat side member 30 attached to the seat 10 by a seat side coupling shaft 43a in such a way as rotatable axially, and rotates so as to move the seat 10 between the service position and the retracted position. The torque transmitting means is coupled with the floor side coupling shaft 42a and the seat side coupling shaft 43a and transmits the torque to rotate the link member 41 round the floor side coupling shaft 42a and torque rotating the seat side member 30 round the seat side coupling shaft 43a to each other so as to synchronize the two rotations. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a retractable seat for a vehicle. More specifically, the present invention relates to a retractable seat for a vehicle having a storage device for bringing the seat from a use position into a storage position at a lower position of the use position to be in a storage state.

2. Description of the Related Art Conventionally, a rear seat of a vehicle is provided with a storage device for bringing a seat when not in use from a use position into a storage position at a lower position (for example, a floor surface) in front of the vehicle with respect to the use position. There is something that has been. As this storage device, a configuration in which a front end portion of a seat cushion and a floor are linked by a link member is known. According to the storage device, when the seat is stored, the seat is tilted from the high position (use position) behind the vehicle toward the low position (storage position) ahead of the vehicle according to the rotation of the link member. be able to. However, for example, in the case of a configuration in which the seat and the floor are connected to each other by a link member so as to be rotatable, the seat must always be supported and the tilted posture of the seat with respect to the link member must be maintained during the storing operation. It took time and effort.
In order to simplify the storing operation, there has been proposed one in which a four-bar link is adopted as a link connecting portion between the front end portion of the seat cushion and the floor. Thereby, since the tilting posture of the seat at the time of the storing operation can be regulated with respect to the tilting posture of both the support links, the support for maintaining the tilting posture of the seat becomes unnecessary.
As this type of related technology, for example, a storage device disclosed in Patent Document 1 can be cited.

Japanese Patent Laid-Open No. 11-32410

  In a conventional storage device that employs a four-bar link, the storage operation of the sheet can be simplified, but the configuration of the storage device takes a place for installation. That is, the four-bar link has a structure in which both support links are installed at the front and rear positions of the floor in order to move the seat in the front and rear direction of the vehicle. For this reason, the space at the feet of passengers seated on the seat is narrowed. For example, the foot landing position when getting on and off the vehicle becomes a position far from the center of gravity (a position far from the seating position), causing various problems such as a hindrance to getting on and off. There was a problem of this.

  The present invention was devised to solve the above-described problems, and the problem to be solved by the present invention is to simplify the storing operation of the sheet and to make the installation space of the storage device compact. There is to plan.

In order to solve the above problems, the retractable seat for a vehicle of the present invention takes the following means.
A first invention is a retractable seat for a vehicle having a storage device for bringing the seat of the vehicle from a use position into a storage position at a lower position of the use position so as to be in a stored state. The link member is connected to a floor side member provided at one end of the vehicle on the floor of the vehicle so as to be pivotable by a floor side connecting shaft, and the other end is provided at the seat. It is connected to the seat side member so as to be pivotable by a seat side connecting shaft, and is configured to rotate to move the seat between the use position and the storage position. Linked to the connecting shaft and the seat-side connecting shaft, both the rotational force for rotating the link member about the floor-side connecting shaft and the rotational force for rotating the seat-side member about the seat-side connecting shaft are mutually transmitted. Structure that synchronizes the rotation of It is what is.
Here, as the rotational power transmission means, a mechanism capable of transmitting rotational power by being installed between the floor side coupling shaft and the seat side coupling shaft, such as a belt transmission mechanism, a chain transmission mechanism, and a gear train. Is mentioned. The seat use position includes, for example, a seat installation position where an occupant can sit and use.
According to the present invention, when the seat is operated to move between the use position and the storage position, the link member rotates with respect to each of the floor side member and the seat side member. At this time, the rotation of the link member with respect to the floor side member and the rotation of the seat side member with respect to the link member are interlocked by the action of the rotational force transmission means provided by being connected to the floor side connection shaft and the seat side connection shaft. Done. In other words, the rotation of the link member with respect to the floor and the rotation of the seat with respect to the link member are simultaneously performed while exerting a regulating force on each other. Therefore, when performing the storing operation of the sheet, since the tilting posture of the sheet is maintained at the posture position corresponding to the tilting posture of the link member, for example, an operation for supporting the sheet from below is unnecessary.

According to a second invention, in the first invention described above, the link member and the rotational power transmission means are arranged side by side in the width direction of the seat.
According to this invention, the rotational power transmission means is disposed at a position closer to the seat side. That is, it becomes the structure which restrained the protrusion of the sheet | seat of the storage apparatus ahead.

According to a third invention, in the first or second invention described above, the rotational force transmission means differentially rotates the rotation about the floor side connection shaft and the rotation about the seat side connection shaft. .
Here, as a configuration for differentially rotating the rotation about the floor side connection shaft and the rotation about the seat side connection shaft, for example, the diameters of the pulleys of the belt transmission mechanism are set to be different from each other. , And the like in which the diameter and the number of teeth of each gear of the chain transmission mechanism and the gear train are set different from each other.
According to this invention, the rotation ratio between the rotation of the link member relative to the floor and the rotation of the seat relative to the link member can be adjusted.

According to a fourth invention, in any one of the first to third inventions described above, the floor-side connecting shaft is integrally fixed to the floor-side member, and is in a connected state that allows the link member to pivot. The seat side connecting shaft is integrally fixed with respect to the link member, and the seat side member is connected to be pivotable. The floor side connecting shaft is integrally provided with a fixed sprocket. An operating sprocket integrated with the seat side member is provided on the side connecting shaft so as to be pivotable. The fixed sprocket and the operating sprocket are wound around a transmission chain.
According to this invention, when a link member rotates with respect to a floor, a link member rotates relatively with respect to a fixed sprocket. Then, this relative rotational force is transmitted to the operating sprocket by the transmission chain. As a result, the seat rotates integrally with the operating sprocket. The fixed sprocket and the working sprocket are arranged so as to rotate in the same direction and send out the transmission chain.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects described above, the sheet side member is configured such that the sheet is flipped up around the sheet side connection shaft with respect to the sheet side member, and the sheet is opened with respect to the link member. Jump-up holding means is provided for holding the angle so that the seat when moving is in a posture state in which it can avoid interference with the protrusion from the floor.
According to the present invention, the sheet is held in a state where the sheet is flipped up to a posture position that does not interfere with the protrusion from the floor during movement by the jumping holding means.

The present invention can obtain the following effects by taking the above-described means.
According to the first invention, when performing the storing operation of the sheet, for example, an operation of supporting the sheet from below and maintaining the tilting posture with respect to the link member is unnecessary, and the storing operation can be simplified. And the structure of the storage device which fulfills the function which simplifies the said operation can be made into the compact design arrange | positioned between the both connection shafts of a link member. Therefore, the installation space can be made compact.
According to the second invention, it is possible to further secure the space at the feet of the occupant seated on the seat. Therefore, for example, it is easy to get on and off the vehicle.
According to the third invention, when the sheet is tilted from the use position to the retracted position, it can be suitably determined so that the sheet is in a target tilt posture.
According to the fourth aspect of the present invention, the rotating power transmission mechanism can be configured with a relatively simple configuration.
According to the fifth aspect of the invention, it is possible to save the trouble of operating the seat so that it does not interfere with the protrusions on the floor.

Embodiments of the best mode for carrying out a retractable seat for a vehicle according to the present invention will be described below with reference to the drawings.
FIGS. 1-6 represents the structure of the retractable seat for vehicles of a present Example. FIG. 1 is a side view showing the overall configuration of the retractable seat for a vehicle, FIG. 2 is a front view of the storage device 40, and FIG. 3 is an exploded perspective view of the storage device 40. 4 is a side view showing a state in which the sheet 10 is held at the jumping position, FIG. 5 is a side view showing a state in the middle of moving the sheet 10 toward the storage position, and FIG. 6 stores the sheet 10. It is a side view which shows the state stored in the position. 1 and 4 to 6, the left direction in the drawing is represented as the vehicle front direction.

The retractable seat for a vehicle according to the present embodiment is applied as a rear seat of the vehicle. As shown in FIG. 1, this retractable seat for a vehicle is normally used on the upper side of a floor F on which a seat 10 is formed in a step shape as a use position (position indicated by a solid line) used by a passenger. (Hereinafter referred to as the upper floor Fu). Further, in the retractable seat for a vehicle, the seat 10 when not in use is stored at a lower position in front of the vehicle with respect to the use position (position indicated by a virtual line) from the use position (position indicated by a solid line). A storage device 40 is provided for falling into the storage state. The storage device 40 is covered from the outside by a cover member (not shown).
Specifically, the storage device 40 is a link member 41 that connects the floor side member 20 integrally provided on the lower side of the floor F (hereinafter referred to as the lower side floor Fl) and the sheet side member 30 provided on the seat 10. Have As shown well in FIG. 2, the link member 41 is connected to the floor side member 20 by connecting shafts 42a and 42b so as to be pivotable, and is connected to the seat side member 30 by connecting shafts 43a and 43b. And are connected so as to be pivotable. The connecting shafts 42a and 42b are welded to the floor side member 20 and are integrally fixed, and connect the link member 41 so as to be pivotable. The connecting shafts 43a and 43b are welded to the link member 41 and integrally fixed, and connect the seat side member 30 so as to be pivotable. As a result, the seat 10 (see FIG. 1) is movable between the use position and the storage position in accordance with the rotation of the link member 41. Here, the connecting shaft 42a corresponds to the floor side connecting shaft of the present invention, and the connecting shaft 43a corresponds to the seat side connecting shaft of the present invention.
2, the sprocket 44a is integrally provided on the connecting shaft 42a, and the sprocket 44b integrated with the seat side member 30 is pivotable on the connecting shaft 43a. Is provided. A transmission chain 46 is wound around the sprockets 44a and 44b so that the rotational forces of both are transmitted to each other. Accordingly, both the rotations are performed in conjunction with each other. For example, by rotating the link member 41 with respect to the floor F (see FIG. 1), the seat 10 is simultaneously rotated with respect to the link member 41. be able to. In other words, the rotation of the link member 41 relative to the floor F and the rotation of the seat 10 relative to the link member 41 can be linked and synchronized. Accordingly, when the seat 10 is stored, the tilting posture of the sheet 10 can be regulated in correspondence with the tilting posture of the link member 41. For example, the seat 10 is supported from below and tilted with respect to the link member 41. An operation for maintaining the posture can be made unnecessary. Here, the sprocket 44a corresponds to the fixed sprocket of the present invention, and the sprocket 44b corresponds to the operating sprocket of the present invention.
Hereinafter, the configuration of each part of the retractable seat for a vehicle will be described in detail.

First, the configuration of the sheet 10 will be described. As the seat 10 is well shown in FIG. 1, a seat cushion 11 and a seat back 12 are connected by a reclining mechanism (not shown). As a result, the seat back 12 can be pivoted about a reclining shaft (not shown), and the standing angle with respect to the seat cushion 11 can be adjusted. When the seat 10 is in use, the seat back 12 is held, for example, in a standing posture position indicated by an imaginary line in FIG. The seat back 12 is configured to be folded toward the seat cushion 11 in conjunction with, for example, an operation of releasing a release lever (not shown) described later. In addition, since the structure of the interlocking mechanism with respect to a reclining mechanism and a release lever is a well-known thing, detailed description is abbreviate | omitted.
Further, the seat 10 is fixed in a state where it is installed on the upper floor Fu when the passenger is seated and used. Specifically, the seat 10 includes a link member 41 connected to a seat-side member 30 provided at the front lower portion of the seat cushion 11 and a lock mechanism 13 provided at the rear lower portion of the seat cushion 11, and the floor F Is supported against. As described above, the former link member 41 is connected to enable the seat 10 to rotate with respect to the floor F. The latter lock mechanism 13 is provided integrally with the seat cushion 11 and has a hook (not shown) that can be engaged and locked with the striker Fs installed on the upper floor Fu. For example, the hook is configured to move in and out in conjunction with an operation of a release lever provided on the seat cushion 11. Thereby, it can switch to the engagement locked state which engaged the hook with striker Fs, and the cancellation | release state which removed the hook. Then, in a state where the lock mechanism 13 is engaged and locked with the striker Fs, the seat 10 connected to the link member 41 can be restricted so as not to rotate. Accordingly, the seat 10 is installed on the upper floor Fu and the position is fixed (supported) in a state where the front end portion is supported by the link member 41. In addition, since the structure of the interlocking mechanism with respect to the lock mechanism 13 and the release lever is a publicly known structure, detailed description is omitted.

  Next, the configuration of the floor side member 20 will be described. The floor member 20 is integrally provided on the lower floor Fl as well shown in FIG. Specifically, as shown in FIG. 3, the floor side member 20 is formed in a plate shape as a whole, and mounting plate portions 21 a and 21 b that are bent upward are formed at both ends thereof. Yes. The connecting shafts 42a and 42b are attached to the attachment plate portions 21a and 21b so as to penetrate in the plate thickness direction. Specifically, as well shown in FIG. 2, the connecting shafts 42a and 42b are welded to the mounting plate portions 21a and 21b and are integrally attached to each other. As shown in FIG. 3, cushions 22a and 22b are attached to the upper plate portions of the attachment plate portions 21a and 21b, respectively. These cushions 22a and 22b are disposed at positions where the seat 10 interferes with the link member 41 when the seat 10 is moved to the use position, and the cushions reduce the impact of the seat 10 and the upper floor Fu (see FIG. 1). Functions as a member.

Next, the configuration of the sheet side member 30 will be described. As shown in FIG. 3, the sheet-side member 30 includes support arm portions 31 a and 31 b formed in a plate surface shape, a holding plate portion 32 that is rotatably attached to the support arm portion 31 a, And a spring 33 that urges the support arm portion 31a to rotate with respect to the holding plate portion 32 in the flip-up direction. Here, as well shown in FIG. 1, the upper floor Fu is formed with a protruding shape (hereinafter referred to as a protrusion D) that protrudes upward due to, for example, the restriction of the lower structure of the upper floor Fu. The protrusion D has a shape that interferes with the sheet 10 and hinders the movement of the sheet 10 when the sheet 10 is moved from the use position to the storage position as it is. Therefore, as shown in FIG. 4, the sheet side member 30 links the sheet 10 to the link member so that the sheet 10 during movement does not interfere with the protrusion D when the locking mechanism 13 of the sheet 10 is released. The structure which can be hold | maintained in the state rotated to the jumping direction with respect to 41 is provided.
The support arm portions 31a and 31b are integrally attached to the seat cushion 11 as shown in FIG. 1, and can be pivoted by connecting shafts 43a and 43b, respectively, as shown in FIG. It is connected.
As shown in FIG. 2, the holding plate portion 32 is connected to the support arm portion 31a and the plate surface so as to be overlapped with each other by a connecting shaft 43a so as to be pivotable. Further, as well shown in FIG. 3, a long hole-shaped escape hole 32 a is formed in the rotating end portion of the holding plate portion 32. And in the state (refer FIG. 2) in which the sheet | seat side member 30 was assembled | attached, the latching pin 33b penetrated in the plate | board thickness direction of the support arm part 31a is inserted in this escape hole 32a. The latch pin 33b is integrally welded to the support arm portion 31a. As a result, as shown in FIG. 3, the support arm 31a is pivoted around the connecting shaft 43a within the length of the escape hole 32a (relatively) with respect to the holding plate 32. It is possible.
As well shown in FIG. 3, the spring 33 is a so-called spiral spring formed in a spiral shape. The end of the spring 33 is latched by a latching spacer 33a, and the outer end is latched by the latch pin 33b described above. The latching spacer 33a is partially formed in a disk shape having a notch groove, and the center side end of the spring 33 is latched in the notch groove. As shown in FIG. 2, the latching spacer 33 a is welded and attached integrally to the holding plate portion 32. In a state where the seat side member 30 is assembled (see FIG. 2), the spring 33 is in a state of being twisted so as to apply a pushing force to the latching pin 33b. Here, the pushing-up direction of the latch pin 33b is a counterclockwise direction with the connecting shaft 43a as a rotation center as seen in FIG.
Here, as shown in FIG. 2, the holding plate portion 32 is integrated with the sprocket 44b together with the latching spacer 33a. Therefore, for example, in a state where the link member 41 is held at a fixed position, the link member 41 is held in a state where the rotation is restricted together with the sprocket 44b.
As shown well in FIG. 1, the seat side member 30 having the above configuration is in a state in which the latch pin 33 b is pushed down to the lower end position of the escape hole 32 a in a state where the seat 10 is held at the use position by the lock mechanism 13. As described above, the postures of the support arm portions 31a and 31b are maintained. When the lock mechanism 13 is released, as shown in FIG. 4, the latch pin 33b is held in a state where it is pushed up to the upper end position of the escape hole 32a by the urging force of the spring 33 (see FIG. 3). Accordingly, the sheet 10 integrated with the support arm portions 31 a and 31 b is held in a position in which the sheet 10 is flipped up with respect to the link member 41.

Next, the configuration of the storage device 40 will be described. As shown well in FIG. 3, the storage device 40 includes a link member 41 connected to the floor member 20 and the seat member 30 by connecting shafts 42a and 42b and connecting shafts 43a and 43b, and a connecting shaft 42a. And sprockets 44a and 44b provided on the connecting shaft 43a, and a transmission chain 46 wound around the sprockets 44a and 44b. The storage device 40 includes a spring 47 for applying a resistance force to the rotation of the link member 41 when the seat 10 (see FIG. 1) is moved to the storage position. The spring 47 functions as a buffer member that reduces the impact of the seat 10 and the lower floor Fl (see FIG. 1).
As shown well in FIG. 3, the link member 41 has links 41a and 41b arranged side by side in the width direction of the seat 10 (see FIG. 1), and both links 41a and 41b are both upper and lower frames 41c. , 41d are rigidly coupled together. Thereby, the link member 41 operates integrally with a pair of left and right.
As shown in FIG. 2, the connecting shafts 42 a and 42 b are welded and integrally attached to the mounting plate portions 21 a and 21 b of the floor member 20. The connecting shafts 42a and 42b are inserted through the lower ends of the links 41a and 41b, respectively, and connect the links 41a and 41b so as to be pivotable. Further, the connecting shafts 43a and 43b are integrally welded to the upper end portion of the link member 41, respectively. The connecting shafts 43a and 43b connect the sheet side member 30 so as to be pivotable.
As well shown in FIG. 2, the sprocket 44a is welded and integrally attached to the connecting shaft 42a. The sprocket 44b is welded and integrally attached to the latching spacer 33a of the seat side member 30, and is connected by a connecting shaft 43a so as to be pivotable. That is, since the sprocket 44a is integral with the floor side member 20, it cannot be rotated. Further, the sprocket 44b is configured to be integral with the seat side member 30 and pivot about the connecting shaft 43a. The sprocket 44b has a smaller number of teeth than the sprocket 44a, and is configured to rotate differentially with respect to each other. Specifically, the relationship of the gear ratio between the two sprockets 44a and 44b is as follows. As shown in FIG. 1, when the seat 10 is moved to the position of the lower floor Fl, the inclination posture of the seat 10 with respect to the link member 41 is changed. It is set to be in the retracted posture (posture indicated by the phantom line in FIG. 1). In other words, by rotating the link member 41 with respect to the floor-side member 20 to the retracted position, the gear ratio between the sprockets 44a and 44b is set so that the tilting posture of the seat 10 with respect to the link member 41 becomes the retracted posture. Is set. Specifically, for example, the number of teeth of the sprocket 44b is set to 12, and the number of teeth of the sprocket 44a is set to 11.
The transmission chain 46 is wound around both the sprockets 44a and 44b as well shown in FIG. 2, and as shown in FIG. 1, the tension chain 46a attached to the link member 41 is in a constant tension state. It is kept in. The tensioner 46a is attached to the link member 41 by fastening bolts B as well shown in FIG. Thus, the transmission chain 46 operates to mutually transmit the turning force of the sprocket 44a and the turning force of the sprocket 44b and to synchronize the rotations of both.
The spring 47 is a spiral spring formed in a spiral shape as well shown in FIG. The center of the spring 47 is latched by a latch pin 47a, and the outer end is latched by a latch pin 47b. As shown in FIG. 2, the latch pin 47 a has a shape capable of latching the end portion on the center side of the spring 47 at a position coaxial with the connecting shaft 42 a, and the mounting plate of the floor side member 20. It is welded to the part 21a and attached integrally. The latch pin 47b is welded and integrally attached to the link 41a at a position separated from the mounting position of the latch pin 47a. In the assembled state (see FIG. 2), the spring 47 is in a state of being twisted so as to apply a pushing force to the latch pin 47b. Here, the pushing-up direction of the latch pin 47b is a clockwise direction with the connecting shaft 42a as the rotation center as seen in FIG.

The retractable seat for a vehicle having the above-described configuration operates as follows by releasing the lock mechanism 13 of the seat 10 (see FIG. 1) in the use position.
That is, when the locking mechanism 13 of the seat 10 is released, the seat 10 is flipped up to a position where it does not interfere with the protrusion D by the biasing action of the spring 33 (see FIG. 3), as well shown in FIG. Is held in a state where
When an acting force is applied to the jumping-up seat 10 to push it forward, for example, the link member 41 rotates relative to the floor-side member 20. At this time, with the rotation of the link member 41, a relative rotational force acts between the link member 41 and the connecting shafts 42a and 42b (sprocket 44a). This turning force is transmitted to the sprocket 44b by the transmission chain 46. As a result, the sprocket 44b is integrated with the seat side member 30 and pivots about the connecting shaft 43a. Along with this, as well shown in FIG. 5, the seat 10 rotates in the clockwise direction as viewed in FIG. That is, the rotation of the link member 41 with respect to the floor side member 20 and the rotation of the seat side member 30 with respect to the link member 41 are performed in conjunction with each other. In other words, the tilting posture of the seat 10 is regulated corresponding to the tilting posture of the link member 41. Therefore, for example, an operation for supporting the seat 10 from below and maintaining the tilted posture with respect to the link member 41 is unnecessary.
Then, when the seat 10 is further moved forward to the front of the vehicle and moved to the position (storage position) of the lower floor Fl, as shown in FIG. 6, the seat 10 has a differential between both sprockets 44a and 44b. When the storage position is reached, the storage posture is reached.

Then, the usage method of the retractable seat for vehicles is demonstrated.
As well shown in FIG. 1, when the seat 10 is in use, the seat cushion 11 is in the use position (position shown by the solid line) on the upper floor Fu, and the posture position (virtual position where the seat back 12 stands up). The position indicated by the line). The seat 10 is held in a state where the lock mechanism 13 is engaged and locked to the striker Fs.
Therefore, in order to store the seat 10 in the storage position, the release lever is operated to release the engagement lock state of the lock mechanism 13. Then, the seat back 12 is folded to the seat cushion 11 side, and the seat 10 is flipped up with respect to the link member 41 and interferes with the protrusion D protruding from the upper floor Fu as shown in FIG. It is held in a non-positioned state.
Then, the jumping-up seat 10 is pushed forward of the vehicle, and the seat 10 is moved toward the storage position. At this time, the link member 41 rotates forward of the vehicle with respect to the floor F by the acting force that pushes the seat 10 forward of the vehicle. Further, in synchronization with the rotation of the link member 41, the sheet 10 rotates with respect to the link member 41 (see FIG. 5).
As shown well in FIG. 6, when the seat 10 reaches the position (storage position) of the lower floor Fl, the seat 10 is tilted at this stage. That is, the seat 10 can be put into the retracted state simply by operating the release lever to push the seat 10 toward the front of the vehicle.

Thus, according to the retractable seat for a vehicle of the present embodiment, the storing operation of the seat 10 can be easily performed. For example, when the seat 10 is stored, an operation of supporting the seat 10 from below and maintaining the tilting posture with respect to the link member 41 is unnecessary. Further, since the seat 10 is automatically tilted by tilting the seat 10 from the use position to the storage position, an operation for setting the seat 10 to the storage posture is not necessary. Further, by releasing the lock mechanism 13 of the seat 10, the seat 10 is automatically lifted up and held up to a position where it does not interfere with the protrusion D on the upper floor Fu, so that the seat 10 interferes with the protrusion D. No operation is required to prevent this.
And the structure of the storage apparatus 40 which can simplify the said storing operation can be made into the compact design which can be arrange | positioned between the connection shaft 42a and the connection shaft 43a. Further, the storage device 40 can be arranged side by side in the width direction of the sheet 10 with respect to the link member 41. Therefore, the installation space can be made compact. Further, the storage device 40 can be configured relatively easily by general-purpose members such as the sprockets 44a and 44b and the transmission chain 46.

Although the embodiment of the present invention has been described with one embodiment, the present invention can be implemented in various forms in addition to the above embodiment.
In the above-described embodiment, the sprocket 44a, as the rotational power transmission means for mutually transmitting the rotational power for rotating the link member 41 around the coupling shaft 42a and the rotational power for rotating the seat side member 30 about the coupling shaft 43a. Although the chain transmission mechanism to which 44b and the transmission chain 46 are applied is shown, other transmission mechanisms may be used. Specifically, for example, a belt transmission mechanism combining a pulley and a transmission belt, or a gear train that transmits power by meshing a plurality of gears, is installed between both connecting shafts to transmit rotational power. The mechanism which enables is mentioned.
Moreover, although the protrusion D formed in the upper stage floor Fu was shown as a protrusion which inhibits the movement of the sheet | seat 10, other protrusions like a level | step-difference part between an upper stage floor and a lower stage floor are shown, for example. An object may be targeted.

It is a side view which shows the whole structure of the retractable seat for vehicles of a present Example. It is a front view of a storage device. It is a disassembled perspective view of a storage apparatus. It is a side view which shows the state with which the sheet | seat was hold | maintained in the jumping position. It is a side view which shows the state in the middle of moving a sheet | seat toward a storing position. It is a side view which shows the state which stored the sheet | seat in the storing position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Seat 11 Seat cushion 12 Seat back 13 Lock mechanism 20 Floor side member 21a Mounting plate part 21b Mounting plate part 22a Cushion 22b Cushion 30 Seat side member 31a Support arm part 31b Support arm part 32 Holding plate part 32a Escape hole 33 Spring 33a Hook Stop spacer 33b Latch pin 40 Storage device 41 Link member 41a Link 41b Link 41c Frame 41d Frame 42a Connecting shaft (floor side connecting shaft)
42b Connecting shaft (floor side connecting shaft)
43a Connecting shaft (seat-side connecting shaft)
43b Connecting shaft (seat-side connecting shaft)
44a Sprocket (fixed sprocket)
44b Sprocket (working sprocket)
46 Transmission chain 46a Tensioner 47 Spring 47a Latching pin 47b Latching pin F Floor Fu Upper floor Fl Lower floor Fs Strike D Projection B Bolt

Claims (5)

A retractable seat for a vehicle having a storage device for bringing a vehicle seat from a use position into a storage position at a lower position of the use position to be in a storage state,
The storage device has a link member and a rotational power transmission means,
The link member is connected to a floor side member provided at one end on a vehicle floor so as to be pivotable by a floor side connecting shaft, and the other end is connected to the seat side member provided on the seat. It is connected to the connecting shaft so as to be pivotable, and is configured to rotate to move the seat between the use position and the storage position.
The rotating power transmission means is connected to the floor side connecting shaft and the seat side connecting shaft, and rotates the link member about the floor side connecting shaft and the seat side member to the seat side connecting shaft. A retractable seat for a vehicle, characterized in that a rotational force that rotates around is transmitted to each other to synchronize both rotations. The retractable seat for a vehicle according to claim 1,
The retractable seat for vehicles, wherein the link member and the rotational power transmission means are arranged side by side in the width direction of the seat. The retractable seat for a vehicle according to claim 1 or 2,
The retractable seat for a vehicle, wherein the turning power transmission means differentially rotates the rotation about the floor side connection shaft and the rotation about the seat side connection shaft. A retractable seat for a vehicle according to any one of claims 1 to 3,
The floor-side connecting shaft is integrally fixed to the floor-side member and is in a connected state that allows the link member to pivot.
The seat side connecting shaft is integrally fixed to the link member and is in a connected state that allows the seat side member to pivot.
The floor-side connecting shaft is integrally provided with a fixed sprocket, and the seat-side connecting shaft is provided with an operating sprocket integrated with the seat-side member so as to be pivotable. A retractable seat for a vehicle, wherein the operating sprocket is wound around a transmission chain. A retractable seat for a vehicle according to any one of claims 1 to 4,
The seat side member is configured such that the sheet is flipped up around the seat side connecting shaft with respect to the seat side member, and an opening angle of the seat with respect to the link member is determined. A vehicular retractable seat is provided, which is provided with a jumping-up holding means for holding in a posture state in which the interference can be avoided.

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