JP2009067152A - Pivoting device and automobile with pivoting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent big striking sound from being generated while a seat cushion hits against a seat-back unit strongly when the seat cushion reaches a terminal position of a pivoting device having the seat cushion supported at a supporting shaft of the seat-back unit in a pivotable manner between its initial position and its terminal position and a biasing means for biasing the seat cushion toward the terminal position. <P>SOLUTION: A depressing part 78A arranged at a seat cushion 13 is struck against an extremity end 77A of a spiral spring 75A just before the seat cushion 13 reaches its terminal position where it is overlapped on a seat-back unit 12, and the spiral spring 75A is resiliently deformed to keep the seat cushion 13 biased toward its initial position by a spring force of the spiral spring 75A generated at this time, thereby applying a braking action to the seat cushion 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention includes a rotating body supported by a support shaft so as to be rotatable between an initial position and an end position, and an urging means for urging the rotating body toward the end position. A rotating body device in which the rotating body rotates so that the tip of the moving body occupies a higher position when the rotating body is in the end position than when the rotating body is in the initial position, and the rotating body The present invention relates to an automobile having a device.

  Rotating body devices of the above type are employed in machines and devices in various technical fields. For example, in an automobile, a seat cushion that supports the bottom of a seated vehicle, a back door provided at the rear of the vehicle body, a hood panel that opens and closes the upper opening of the engine room, a luggage door that opens and closes the opening of the luggage compartment, or an opening of a glove box. A rotating body device including a rotating body made of a lid that opens and closes is used (see Patent Document 1).

  When the rotating body configured in various forms as described above is rotated from the initial position to the terminal position, the rotating body is attached to the terminal position by an urging means such as a spiral spring or a gas damper stay. Be forced. For this reason, the operator can easily wait for the rotating body to the end position. At that time, in order to quickly and reliably rotate the rotating body to the end position, it is necessary to set a large urging force by the urging means. If this urging force is too small, the rotating speed of the rotating body becomes slow, and it may take a long time to reach the end position, or the rotating body may stop halfway without rotating to the end position. . However, when the urging force of the urging means is large as described above, the rotating body rotates at a high speed toward the end position, so that when the rotating body reaches the end position and stops, a large impact sound is generated, Inevitable problems that cause discomfort to the operator and others.

JP 2001-130303 A

  The object of the present invention is to eliminate the above-mentioned conventional drawbacks, and prevent or effectively generate a large impact sound when the rotating body reaches the end position without weakening the urging force by the urging means. An object of the present invention is to provide a rotating body device of the type described at the beginning which can be suppressed, and an automobile having the rotating body device.

  According to the present invention, in the rotating body device of the type described at the beginning, the rotating body that has started to rotate from the initial position by the urging action of the urging means reaches the terminal position from the time before reaching the terminal position. During this period, the rotating body is urged toward the initial position to provide a braking means for applying a braking action to the rotating body.

  At that time, the braking means includes a spiral spring having a base end locked to the support shaft, and a pressurizing portion provided on the rotating body. The spiral spring urges the rotating body toward the initial position from when it is rotated to a predetermined angular position between the initial position and the terminal position until it rotates to the terminal position. The pressurizing unit may be configured to pressurize the tip of the spiral spring to elastically deform the spiral spring.

  Further, in the rotating body device, the biasing means is preferably formed of a spiral spring having a base end portion locked to the support shaft and a distal end portion locked to a protrusion formed on the rotating body. It is.

  Further, the rotating body device further includes a locking unit that locks the rotating body at the initial position when the rotating body is in the initial position and releases the lock when the rotating body is rotated. And is advantageous.

  Further, in the rotating body device, the rotating body includes a seat cushion that is disposed in a vehicle interior and supports a seated person's buttocks, and the seat cushion is used in the initial position. When the cushion is not used, it can be configured to be stored in the end position.

  Furthermore, in the rotating body device, it is advantageous that the seat cushion is rotatably supported by a support shaft provided on a seat back that supports the back of the seated person.

  Further, the present invention is characterized by an automobile provided with each of the rotating body devices described above.

  According to the present invention, it is possible to prevent or effectively suppress the generation of a large impact sound when the rotating body reaches the end position without weakening the urging force by the urging means.

  Hereinafter, an embodiment of a rotating body device in which the rotating body is composed of a seat cushion disposed in the interior of a vehicle will be described in detail with reference to the drawings.

  FIG. 1 to FIG. 3 are schematic cross-sectional views of an automobile in which the interior of the vehicle interior is clarified. Symbol Fr in these figures indicates the forward direction of the automobile (the same applies to FIGS. 4, 6 and 7), and the direction perpendicular to the paper surface of FIGS. The vehicle width direction. 4 and 5, the vehicle width direction is indicated by the symbol W. In this specification, the terms “front” or “rear” mean front and rear with respect to the forward direction Fr of the automobile.

  The vehicle body 1 shown in FIG. 1, that is, its main body, as is known per se, is a roof panel 2 that forms the upper part of the vehicle body 1, a floor panel 3 that forms the floor surface of the passenger compartment R, It is comprised from various panels, such as the side panel 4 which comprises each side part of the vehicle width direction of the room | chamber R, and only the one side panel 4 is shown by FIG. The roof panel 2 includes an inner panel 2A and an outer panel 2B that are integrally fixed to each other. A back door 5 is disposed at the rear opening of the vehicle body 1, and the back door 5 is supported by the vehicle body 1 so as to be capable of rotating and opening in the directions of arrows A and B. Further, a side door 9 supported by the vehicle body 1 so as to be capable of opening and closing is disposed in the door opening 7 formed in each side panel 4 of the vehicle body 1, and a window glass 10 is disposed in the rear window opening 8. Has been. The side panel 4 is covered with an interior material (not shown), and the inner panel 2A of the roof panel 2 is covered with a ceiling material (not shown).

  In the passenger compartment R, a seat 20 made of a front seat and a seat 11 made of a rear seat arranged behind the front seat are arranged. As shown in FIG. The seat back 12 that supports the back of the seated person and the seat cushion 13 that supports the buttocks of the seated person are included. FIG. 1 shows a seated person P seated on the seat 11 in a simplified manner with a two-dot chain line.

  The seat cushion 13 constitutes an example of a rotating body in the rotating body device, and the seat cushion 13 can rotate between an initial position shown in FIG. 1 and an end position shown in FIG. It has become. FIG. 1 shows a state in which the seat back 12 occupies the use position. When the seat cushion 13 is in the initial position shown in FIG. 1, the seat cushion 13 maintains a substantially horizontal posture. When the seat back 12 is in the use position shown in FIG. 1, the seat back 12 occupies a posture that rises substantially perpendicular to the seat cushion 13 in the initial position.

  As shown in FIG. 5, the seat back 12 has a seat back frame (not shown in FIGS. 1 to 4) 71 that forms the skeleton of the seat back 12, and the seat back 12 has the use position shown in FIG. 1. Support shafts 15 and 15A each formed of a pin are fixed to each side portion in the vehicle width direction of the portion of the seat back frame 71 that becomes the lower portion when it is occupied by welding. Both support shafts 15 and 15A are located concentrically with each other, and CL in FIG. 5 indicates the center line of both support shafts 15 and 15A. As shown in FIGS. 1 to 5, the seat cushion 13 has brackets 14 and 14A fixed to the cushion frame (not shown) on each side in the vehicle width direction, as shown in FIG. As described above, the holes 72 and 72A formed in the brackets 14 and 14A are rotatably fitted to the support shafts 15 and 15A via the bearings 73 and 73A, respectively.

  As shown in FIG. 6, a base end portion 76 of a spiral spring 75, which is an example of an urging means, is fitted in a notch 74 (see also FIG. 5) formed in the distal end portion of one support shaft 15. The leading end 77 of the spiral spring 75 is locked to a protrusion 78 formed on one bracket 14 of the seat cushion 13 which is an example of a rotating body. The spiral spring 75 is a member that constitutes one component of the rotating body device, but the spiral spring 75 and the protrusion 78 are not shown in FIGS. 1 to 5. Similarly, the bearings 73 and 73A shown in FIG. 5 are not shown in other drawings.

  On the other hand, as shown in FIGS. 1 to 4, one end of each arm 17 is fixed to the upper part of each side in the vehicle width direction of the seat back 12, and the other end of each arm has a pivot pin 18. Via each of the side panels 4 of the vehicle body 1 via a via.

  As shown in FIG. 1, when the seat cushion 13 occupies the initial position and the seat back 12 occupies the use position, these are related to first and second lock members 23 and 24, which will be described later. The seat cushion 13 supports the butt of the seated person P, and the seat back 12 serves as the seated person. Can support the back of P.

  When the lock on the seat cushion 13 is released, the seat cushion 13 is moved around the support shafts 15 and 15A provided on the seat back 12 by an arrow C in FIGS. As shown in FIG. 2, it rotates in the direction shown and occupies the terminal position overlapping the seat back 12 in the use position.

  Further, when the lock on the seat back 12 is released, the seat back 12 is made to be seated by a biasing action of a gas damper stay (not shown) which is an example of a biasing means provided between the seatback 12 and the vehicle body 1. Together with the cushion 13, it pivots around the pivot pin 18 toward the front indicated by the arrow E in FIG. 2, and occupies a position raised above the passenger compartment R as shown in FIG. 3. The position of the seat back 12 at this time is the non-use position. At this time, the seat cushion 13 is positioned over the seat back 12, and the seat back 12 is locked to the vehicle body 1 by the third lock member 61 and the third striker 62 shown in FIG. The seat back 12 is held in the non-use position together with the seat cushion 13. The third lock member and the third striker 62 will be described in detail later.

  As described above, since the seat 11 is stored in the upper portion of the passenger compartment R, a large space can be secured below the seat 11, and luggage (not shown) can be efficiently stored in this space. By reverse operation as described above, the seat 11 can be brought to the use position shown in FIG. 1 and the seat 11 can be used. That is, after releasing the lock by the third lock member 61 described above, the seat back 12 is rotated around the pivot pin 18 in the direction shown by the arrow F in FIG. 3 to bring it to the position shown in FIG. Then, the seat cushion 13 is rotated around the support shafts 15 and 15A in the direction shown by the arrow D in FIG. 2 against the action of the spiral spring 75, and brought to the initial position shown in FIG. In this way, the seat back 12 and the seat cushion 13 again occupy the use position and the initial position. At this time, the seat cushion 13 and the seat back 12 are respectively connected to the first and second locking members 23 and 24, and the first And it locks with respect to the vehicle body 1 by the 2nd striker 31,38.

  As described above, the rotating body device of the present example includes the rotating body including the seat cushion 13 supported by the support shafts 15 and 15A so as to be rotatable between the initial position and the terminal position, and the seat cushion 13 as described above. And a spiral spring 75 which is an example of a biasing means for biasing toward the end position. At this time, as can be seen from FIG. 1 and FIG. 2, the distal end portion 79 of the rotating body made of the seat cushion 13 has a terminal end shown in FIG. 2 rather than when the seat cushion 13 is in the initial position shown in FIG. The seat cushion 13 is rotated so that the position of the seat cushion occupies a higher position. The front end 79 means the front end of the rotating body opposite to the center of rotation of the rotating body.

  According to the rotating body device described above, when the seat cushion 13 is rotated from its initial position shown in FIG. 1 to the end position shown in FIG. Therefore, the operator can easily lift the seat cushion 13 to the end position. At that time, as described above, in order to reliably and quickly rotate the seat cushion 13 to the end position, it is necessary to set the biasing force of the spiral spring 75, that is, the spring force strongly. However, in this case, in the conventional rotating body device, when the seat cushion 13 hits the seat back 12 and stops at the end position, there is a possibility that a large impact sound is generated.

  Therefore, in the rotating body device of this example, the seat cushion 13 that has started to rotate from the initial position due to the urging action of the spiral spring 75 extends from the time before reaching the end position to the end position. There is provided a braking means that urges the seat cushion 13 toward the initial position and applies a braking action to the seat cushion 13. A specific configuration example is as follows.

  7 is a view of the lower part of the seat 11 as viewed in the direction of the arrow VII in FIG. A base end portion 76A of a spiral spring 75A different from the spiral spring 75 shown in FIG. 6 is formed in a notch 74A formed at the tip of the other support shaft 15A different from the support shaft 15 shown in FIG. It is fitted and locked. In FIG. 5, the spiral spring 75A is not shown. Further, the other bracket 14A of the seat cushion 13 which is an example of a rotating body is provided with a pressurizing portion 78A formed in the same manner as the protruding portion 78 shown in FIG. At that time, when the seat cushion 13 is in the initial position shown by the solid line in FIG. 7, the pressurizing portion 78A, also shown by the solid line, is spaced from the tip 77A of the spiral spring 75A, also shown by the solid line. . For this reason, the spiral spring 75A is in a free state that is not elastically deformed.

  When the seat cushion 13 in the initial position starts to rotate in the direction indicated by the arrow C in FIG. 7 around the support shafts 15 and 15A as described above, the pressurizing portion provided in the seat cushion 13 78A also rotates in the direction of arrow C around the support shaft 15A. When the seat cushion 13 that has started to rotate from the initial position as described above rotates to a predetermined angular position between the initial position and the end position, the pressurizing portion 78A hits the tip portion 77A of the spiral spring 75A. Then, pressurization is started, and the pressurizing portion 78A continues to pressurize the tip portion 77A of the spiral spring 75A until the seat cushion 13 rotates to the end position as shown by a two-dot chain line in FIG. The tip end portion 77A of the spiral spring 75A when the seat cushion 13 reaches the end position and the pressurizing portion 78A in pressure contact therewith are indicated by a two-dot chain line in FIG.

  Since the spiral spring 75A pressurized by the pressure unit 78A as described above is elastically deformed, the spiral spring 75A has an arrow d in FIG. 7 with respect to the pressure unit 77A indicated by a two-dot chain line in FIG. Apply external force in the direction indicated by. As a result, the seat cushion 13 is biased toward its initial position, and a braking action is applied to the seat cushion 13. For this reason, the seat cushion 13 rotating from the initial position toward the end position is decelerated from the middle. Therefore, when the seat cushion 13 reaches the end position, it does not hit the seat back 12 strongly, and no large impact sound is generated when the seat cushion 13 stops at the end position. In addition, the braking action is applied to the seat cushion 13 after the seat cushion 13 has been rotated to the vicinity of the end position, and since the seat cushion 13 has been rotated at a high speed, the seat cushion 13 can be quickly moved. And it can be reliably rotated to the end position.

  FIG. 8 is a graph showing an example of the relationship between the rotation angle of the seat cushion 13 and its angular velocity when the seat cushion 13 is rotated from the initial position to the end position. The solid line m in this figure indicates the angular velocity of the seat cushion 13 when the seat cushion 13 is rotated to the end position only by the spiral spring 75 shown in FIG. Since the braking action by the spiral spring 75A is exerted on the seat cushion 13 when it is rotated to the indicated angle, the angular velocity of the seat cushion 13 thereafter is as shown by the broken line n in FIG. Thereby, the impact sound when the seat cushion 13 reaches the end position can be eliminated or reduced.

  As described above, in the rotating body device of the present example, the rotating body made of the seat cushion 13 that has started to turn from the initial position by the biasing means made of the spiral spring 75 ends from the time before reaching the end position. Until reaching the position, the braking means for urging the rotating body toward the initial position and applying a braking action to the rotating body includes a spiral spring 75A in which the base end portion 76A is locked to the support shaft 15A. And a pressurizing portion 78A provided on the rotating body including the seat cushion 13, and the rotating body that has started to rotate from the initial position rotates to a predetermined angular position between the initial position and the end position. From the time point when the pressure spring 78A is rotated to the end position, the pressurizing portion 78A biases the rotating body toward the initial position so that the spiral spring 75A biases the rotating body toward the initial position 77A. The pressurized is constructed the spiral spring 75A so as to elastically deform.

  Further, in the rotating body device of this example, the urging means for urging the rotating body composed of the seat cushion 13 toward the end position is also such that the base end portion 76 is engaged with the support shaft 15 as shown in FIG. The distal end 77 is formed of a spiral spring 75 that is locked to a protrusion 78 formed on the rotating body. For this reason, common parts can be used for the biasing means and the braking means, and the configuration of the rotating body device can be simplified.

  In addition, since both the spiral springs 75 and 75A are configured such that the base end portions 76 and 76A are locked to the notches 74 and 74A of the support shafts 15 and 15A formed by pins, Before the shafts 15 and 15A are welded to the seat back frame 71, by adjusting the angular positions of the support shafts 15 and 15A with respect to the seat back frame 71, the spring force of the spiral springs 75 and 75A and the spiral spring 75A can be adjusted. It is possible to adjust the timing for starting to exert a braking action on the seat cushion 13.

  Further, the rotating body device of the present example is a lock that locks the rotating body at the initial position when the rotating body composed of the seat cushion 13 is in the initial position, and releases the lock when rotating the rotating body. Since the locking means including the member 23 and the striker 31 is provided, the rotating body can be reliably held at the initial position.

  Furthermore, in the rotating body device of the present example, the rotating body is composed of a seat cushion 13 that is disposed in the interior of the automobile and supports the buttocks of the seated person P, and the seat cushion 13 is used in an initial position. When the seat cushion 13 is not in use, the seat cushion 13 is stored in the terminal position, and the seat cushion 13 is rotatably supported by support shafts 15 and 15A provided on the seat back that supports the back of the seated person P. However, even when the rotating body is made of a material other than the seat cushion, the above-described structures of the rotating body device can be employed without any trouble.

  By the way, in the automobile of this example, the seat back 12 and the seat cushion 13 are folded as shown in FIG. 2 and lifted to the upper part of the passenger compartment shown in FIG. A handle arm 16 is provided on the seat back 12 for the purpose of improving the operability when the door is lowered to the position shown in FIG. As shown in FIG. 1, when the seated person P is seated on the seat 11, the surface of the seat back 12 that supports the back of the seated person P is referred to as a seat back support surface 12A, and the surface on the opposite side is seated. When referred to as the back back surface 12B, the handle arm 16 is provided on the seat back back surface 12B side. In addition, the base end portion of the lower handle arm 16 when the seat back 12 is in the use position shown in FIG. 1 is rotatably connected to the seat back frame of the seat back 12 via the pin 19. Yes. As shown in FIG. 4, a hole 22 is formed on the free end 21 side of the handle arm 16, and a handle portion for the handle arm 16 is configured by the hole 22.

  When a seated person P is seated on the seat 11 and is using the seat 11, the handle arm 16 is normally stored in a retracted position located along the seat back back surface 12B as indicated by a broken line in FIG. It has been. At this time, the handle arm 16 is held in its retracted position by a lock device (not shown). As this locking device, a lock claw supported rotatably on the seat back back surface 12B can be used. The lock claw presses the handle arm 16 in the storage position to lock it, and the lock claw , The lock claw can be separated from the handle arm 16 and the lock on the handle arm 16 can be released.

  When the seat back 12 and the seat cushion 13 are lifted to the upper part of the passenger compartment as described above, the back door 5 shown in FIG. 1 is first rotated in the direction of arrow A to bring it to the open position shown in FIG. . Next, the operator shown in a simplified manner with a two-dot chain line in FIG. 2 puts his hand through the opening at the rear of the vehicle body opened by opening the back door 5, rotates the lock claw described above, and moves the handle arm 16. After releasing the lock, a finger is put on the hole 22 (FIG. 4) of the handle arm 16, and the handle arm 16 is moved in the direction in which the free end 21 moves backward as indicated by an arrow G in FIG. The handle arm 16 is rotated to the use position shown in FIG. At this time, the handle arm 16 hits a stopper (not shown) provided on the seat back 12 and is held at the use position. A state when the handle arm 16 is rotated to an intermediate position between the storage position and the use position is indicated by a two-dot chain line in FIG. FIG. 4 shows a state where the handle arm 16 is rotated to the intermediate position.

  The handle arm 16 is brought into the use position to unlock the seat cushion 13 and the seat back 12 by the first and second lock members 23 and 24 as will be described later, and the seat cushion 13 is terminated as shown in FIG. If the operator holds the handle arm 16 and pushes it lightly toward the front side of the vehicle body 1 after turning it to the position, the seat back 12 is moved to the seat cushion 13 by the action of the gas damper stay described above. At the same time, it rotates in the direction of arrow E and is lifted to the non-use position shown in FIG. Subsequently, the operator rotates the handle arm 16 in the direction of arrow H, stores it in the storage position, and rotates the locking claw described above to lock the handle arm 16 in the storage position. By the reverse operation, the seat back 12 together with the seat cushion 13 can be easily rotated to the use position.

  When the seat cushion 13 is in the initial position shown in FIG. 1, the seated person P can use it with the buttocks on the seat cushion 13, and when the seat cushion 13 is in the terminal position shown in FIG. 2. The seat occupant cannot place the buttocks on the seat cushion 13 and cannot use the seat cushion 13. For this reason, in the following description, the position of the seat cushion 13 shown in FIG. 1 is referred to as the use position of the seat cushion 13, and the position of the seat cushion 13 that overlaps the seat back 12 as shown in FIG. It will be referred to as a non-use position of the seat cushion 13.

  As described above, the handle arm 16 rotates between the retracted position located along the seat back back surface 12B and the use position where the free end 21 of the handle arm 16 is located away from the seat back back surface 12B. As can be done, the base end portion of the handle arm 16 which is the lower portion when the seat back 12 is in the use position is rotatably connected to the seat back 12. As a result, the operator can easily turn the seat cushion and the seat back to the upper part of the passenger compartment by placing a hand on the handle arm 16 at the use position, or can easily turn the seat cushion and the seat back downward. it can. Further, since the handle arm 16 is provided on the seat back back surface 12B side, even if the handle arm 16 is configured to be large as shown in FIG. 4, it does not disturb the seated person. By increasing the size of the handle arm 16 in this manner, as shown in FIG. 2 and FIG. 3, the operator holds his / her grip arm 16 while maintaining a comfortable posture, and the seat back 12 and The seat cushion 13 can be rotated.

  By the way, as shown in FIGS. 1 and 4, the first and second lock members 23 and 24 described above are provided on the side portions in the vehicle width direction of the seat cushion 13 and the seat back 12. FIG. 9 is an enlarged view showing the first lock member 23 and the configuration related thereto, and FIG. 10 is an enlarged view showing the second lock member 24 and the configuration related thereto.

  As shown in FIG. 1, FIG. 4 and FIG. 9A, the first lock member 23 is rotatably supported by a cushion frame (not shown) of the seat cushion 13 via a pin 25. A first pole 26 is rotatably supported on the cushion frame of the seat cushion 13 via a pin 27 adjacent to the first lock member 23, and the first lock member 23 and the first pole 26 are supported by the first lock member 23. Each end of the first spring means 28 made of a tension spring is locked.

  When the seat cushion 13 is in the use position shown in FIG. 1, the claw portion of the first pole 26 is formed of a notch formed in the first lock member 23 as shown in FIG. The engaging portion 29 is engaged by the action of the first spring means 28, and thereby the rotation of the first locking member 23 is prohibited. At this time, the first striker 31 fixed to the side panel 4 of the vehicle body 1 is engaged with the engagement recess 30 formed in the first lock member 23. Thereby, the seat cushion 13 is locked with respect to the vehicle body 1. The position of the first lock member 23 at this time is the lock position of the first lock member 23, and the position of the first pole 26 at this time is the engagement position of the first pole 26. . As shown in FIG. 11, the first striker 31 is formed in a substantially U shape in which a base end portion 81 is fixed to the side panel 4 of the vehicle body 1, and the first locker 23 is attached to the first striker 31. The engaging recess 30 is engaged.

  On the other hand, as shown in FIGS. 1, 4 and 10A, the second lock member 24 is also rotatably supported by a seat back frame (not shown) of the seat back 12 via a pin 32. ing. A second pole 33 is rotatably supported on the seat back frame of the seat back 12 via a pin 34 adjacent to the second lock member 24, and is supported by the second lock member 24 and the second pole 33. Each end of the second spring means 35 made of a tension spring is locked. In FIGS. 6 and 7, the second lock member 24, the second pole 33, and the like are not shown.

  When the seat back 12 is in the use position shown in FIG. 1, the claw portion of the second pole 33 is formed of a notch formed in the second lock member 24 as shown in FIG. The joint portion 36 is engaged by the action of the second spring means 35, whereby the rotation of the second lock member 24 is prohibited. At this time, the second striker 38 fixed to the side panel 4 of the vehicle body 1 is engaged with the engagement recess 37 formed in the second lock member 24. As a result, the seat back 12 is locked to the vehicle body 1. The position of the second lock member 24 at this time is the lock position, and the position of the second pole 33 at this time is the engagement position of the second pole 33. As shown in FIG. 11, the second striker 38 has substantially the same structure as the first striker 31, and a base end portion 81 is fixed to the side panel 4 of the vehicle body 1.

  As described above, in the automobile of this example, when the seat cushion 13 is in the use position, the seat cushion 13 is engaged with the first striker 31 fixed to the vehicle body 1 so that the seat cushion 13 is attached to the vehicle body 1. When the first locking member 23 to be locked and the seat back 12 are in the use position, they engage with the second striker 38 fixed to the vehicle body 1 to lock the seat back 12 with respect to the vehicle body 1. A second lock member 24 is provided.

  Here, as indicated by an arrow I in FIG. 9A, when the first pole 26 rotates clockwise around the pin 27, the claw portion of the first pole 26 becomes the first locking member. 23 is disengaged from the engaging portion 29. For this reason, the first locking member 23 is rotated around the pin 25 in the direction indicated by the arrow K in FIG. 9A by the tension action of the first spring means 28, and the first locking member 23 in FIG. ). As a result, the engagement recess 30 of the first lock member 23 is disengaged from the first striker 31 and the lock of the seat cushion 13 by the first lock member 23 is released. The position of the first lock member 23 at this time is the unlock position of the first lock member 23, and the position of the first pole 26 at this time is the disengagement position of the first pole 26. It is.

  Similarly, as indicated by an arrow J in FIG. 10A, when the second pole 33 is rotated clockwise around the pin 34, the claw portion of the second pole 33 is moved to the second locking member 24. Is disengaged from the engaging portion 36. For this reason, the second lock member 24 is rotated around the pin 32 in the direction indicated by the arrow L in FIG. 10A by the tension action of the second spring means 35, and the second lock member 24 in FIG. ). As a result, the engagement recess 37 of the second lock member 24 is disengaged from the second striker 38, and the seat back 13 is unlocked by the second lock member 23. The position of the second locking member 24 at this time is the unlocking position of the second locking member 24, and the position of the second pole 33 at this time is the disengaging position of the second pole. is there.

  As described above, the first locking member 23 has a locking position where the engaging recess 30 engages with the first striker 31 to lock the seat cushion 13 with respect to the vehicle body 1, and the engaging recess 30 includes The second cushioning member 24 is supported by the seat cushion 13 so as to be pivotable between the first striker 31 and the unlocking position where the seat cushion 13 is unlocked with respect to the vehicle body 1. A locking position where the concave portion 37 engages with the second striker 38 to lock the seat back 12 with respect to the vehicle body 1, and the engagement concave portion 37 disengages from the second striker 38 to lock the seat back 12 with respect to the vehicle body 1. Is supported by the seat back 12 so as to be rotatable between a lock release position for releasing the lock.

  Here, with the seat cushion 13 and the seat back 12 locked in the use position shown in FIG. 1, the operator rotates the handle arm 16 from the retracted position toward the use position as described above. When the handle arm 16 reaches the intermediate position shown by the two-dot chain line in FIG. 1, the first pole 26 rotates to its disengagement position as shown in FIG. Thus, the first lock member 23 rotates to the unlock position, and the seat cushion 13 is unlocked. Next, when the handle arm 16 is rotated to the use position shown in FIG. 2, the second pole 33 is rotated to the disengagement position as shown in FIG. The locking member 24 rotates to the unlocking position, and the seat back 12 is unlocked. As described above, the seat 11 is provided with lock release means for releasing the lock of the first and second lock members 23 and 24 in conjunction with the rotation of the handle arm 16. The specific configuration of this unlocking means will be described later in detail. When the handle arm 16 reaches a position between the intermediate position shown by the two-dot chain line in FIG. 1 and the use position shown in FIG. 2, the second lock member 24 rotates to the unlock position. Thus, the seat back can be unlocked.

  By providing the above-described lock release means, a time difference is provided between the release of the lock by the first lock member 23 and the release of the lock by the second lock member 24, first the lock on the seat cushion 13 is released, and then the seat. The lock on the back 12 can be released. For this reason, when the handle arm 16 is rotated toward the use position, the seat cushion 13 is first rotated to the non-use position overlapping the seat back 12 shown in FIG. The seat back 12 can be rotated in the direction indicated by the arrow E in FIG. 2 by the action of the gas damper stay described above, and brought to the non-use position shown in FIG. While the seat cushion 13 and the seat back 12 are correctly folded, the seat back 12 can be rotated to the non-use position in the upper part of the passenger compartment.

  As described above, in the automobile of the present example, the seat back 12 is locked in the use position by the second lock member 24, and the seat cushion 13 is set in the use position by the first lock member 23. When the handle arm 16 is rotated from the retracted position toward the use position in the locked state, the lock by the first lock member 23 is first released along with the rotation, and then the second lock member 24 is moved. The seat 11 is provided with lock releasing means for releasing the lock of the first and second lock members 23 and 24 in conjunction with the rotation of the handle arm 16 so that the lock is released.

  Next, the specific configuration of the above-described lock release means will be clarified. The unlocking means includes the first and second poles 26 and 33 and the first and second spring means 28 and 35 described above. That is, the lock release means is engaged with the engagement portion 29 of the first lock member 23 and the engagement position between the engagement position where the first lock member 23 is held in the lock position and the first lock member 23. A first pole 26 supported by the seat cushion 13 so as to be pivotable between an engagement release position that allows the first lock member 23 to be released from the joint portion 29 and to rotate to the unlock position; An engagement position for engaging the engagement portion 36 of the second lock member 24 to hold the second lock member 24 in the lock position, and disengagement from the engagement portion 36 of the second lock member 24. A second pole 33 supported by the seat back 12 so as to be rotatable between an engagement release position allowing the second lock member 24 to rotate to the lock release position, and a first lock member 23 is urged to rotate toward the unlocked position. A first spring means 28 for urging the first lock member 23 and the first pole 26 in a direction in which the first lock member 23 and the first pole 26 are engaged with each other; The lock member 24 is urged to rotate toward the unlock position, and the second lock member 24 and the second pole are arranged in a direction in which the second lock member 24 and the second pole 33 are engaged with each other. The second spring means 35 for urging and urging the 33 is provided.

  Further, this unlocking means has a time lag generating device 39 shown in a simplified manner in FIG. 4, and this device 39 is arranged inside the seat back 12. FIG. 12 is an explanatory diagram showing the time lag generator 39 in a simplified manner. As shown in FIG. 12, the time lag generator 39 includes a guide frame 40 fixed to the seat back frame of the seat back 12, and the home position shown in FIG. 12A while being guided by the guide frame 40. The slider 41 is slidable in the directions of arrows M and N between the operating positions shown in FIG. Each end of a first wire 42, which is an example of a first connecting means, is fixedly locked to the slider 40 and the above-described handle arm 16, and the first wire 42 is formed as shown in FIG. The interior of the seat back 12 extends.

  As shown by the broken line and the solid line in FIGS. 1 and 12, respectively, when the handle arm 16 is in the retracted position, the slider 41 occupies its home position, and the handle arm 16 is in the position shown in FIGS. When it is rotated to the use position shown in (b), the slider 41 is pulled by the first wire 42 and moved to its operating position. When the handle arm 16 rotates again to the retracted position, the slider 41 is pushed by the first wire 42 and returns to the home position shown in FIG.

  As described above, in the unlocking means of this example, the slider 41 supported by the seat back 12 via the guide frame 40 and the handle arm 16 are in the retracted position so as to be movable between the home position and the operating position. Sometimes the slider 41 occupies its home position, and when the handle arm 16 is rotated to the use position, first connecting means for connecting the slider and the handle arm so that the slider 41 occupies its operating position; The first connecting means is constituted by a first wire 42 having each end fixed to the handle arm 16 and the slider 41, respectively.

  On the other hand, as shown in FIG. 12, a second wire 44, which is an example of a second connecting means, is slidably inserted into the through hole 43 formed in the slider 41. As shown in FIG. 4, the second wire 44 extends inside the seat back 12 and the seat cushion 13, and goes out of the seat cushion 13 in the middle of the second wire 44, and extends along the side portion thereof. The portion is fixedly locked to the first pole 26 as shown in FIGS. Further, as described above, the other end side of the second wire 44 is slidably inserted into the through hole 43 formed in the slider 41 shown in FIG. 12, and at the other end, the through hole 43 is inserted. A small block 45 having a diameter larger than the diameter is fixed. In the example shown in FIG. 12A, when the handle arm 16 is in the retracted position, and therefore the slider 41 occupies its home position, the small block 45 is in contact with the slider 41 or the slider 41. Is close to.

  Here, as shown in FIG. 1, the seat back 12 is locked in the use position by the second lock member 24, and the seat cushion 13 is locked in the use position by the first lock member 23. When the operator starts to rotate the handle arm 16 from the retracted position in the state as described above, the slider 41 is pulled by the first wire 42, and the arrow M in FIG. Begin to slide in the direction indicated by. At this time, the slider 41 hits the small block 45 fixed to the other end portion of the second wire 44, and the second wire is moved in the direction indicated by the arrow O in FIGS. Pull. As a result, the first pole 26 shown in FIG. 9A starts to rotate in the direction indicated by the arrow I.

  As shown by the two-dot chain line in FIGS. 1 and 12A, the handle arm 16 rotates to an intermediate position between the retracted position and the use position, and the slider 41 moves between its home position and the operating position. When the position is reached, as shown in FIG. 9B, the first pole 26 is disengaged from the engaging portion 29 of the first lock member 23 and is rotated to the disengaged position. Thereby, the 1st lock member 23 rotates to the lock release position, and the lock | rock with respect to the seat cushion 13 is cancelled | released. Therefore, the seat cushion 13 is rotated from the use position shown in FIG. 1 to the non-use position shown in FIG. 2 by the action of the urging means comprising the spiral spring 75 described above. At this time, the lock on the seat back 12 by the second lock member 24 has not yet been released, and the seat back 12 is locked at the use position shown in FIG. 2 and stopped. The unlocking operation for the seat back 12 will be described later.

  As described above, in the unlocking means of this example, the seat back 12 is locked in its use position by the second lock member 24, and the seat cushion 13 is in its use position by the first lock member 23. In the locked state, the handle arm 16 starts to rotate from the retracted position to reach a position between the retracted position and the use position, and accordingly, the slider 41 is positioned between the home position and the operating position. The first pole 26 is disengaged from the engaging portion 29 of the first lock member 23 and is rotated to the disengagement position. The first lock member 23 is moved by the action of the first spring means 28. A second connecting means for connecting the slider 41 and the first pole 26 is provided so as to allow rotation to the unlocking position. In addition, the second connecting means has one end fixed to the first pole 26, the other end penetrating the slider 41 so as to be slidable relative to the slider 41, and a small block 45 at the other end. Is constituted by a second wire 44 fixed thereto.

  Further, as shown in FIG. 4 in a simplified manner, the unlocking means of this example includes a rotating arm device 46 including a plurality of rotating arms (not shown in FIG. 4) provided inside the seat back 12. Have. FIG. 13 and FIG. 14 are explanatory views specifically showing the rotating arm device 46. As shown in FIGS. 13 and 14, the rotating arm device 46 includes a first rotating arm 47 that is rotatably supported via pins 50 and 51 with respect to the seat back frame of the seat back 12. A second rotating arm 48 is provided. Each end portion of the third spring means 49 formed of a tension spring is engaged with the first rotating arm 47 and the seat back frame side. As a result, the first rotating arm 47 is urged to rotate in the clockwise direction in FIGS. 13 and 14, but usually hits a stopper (not shown), and the initial position shown in FIG. Stop in position. Similarly, each end of the fourth spring means 52 made of a tension spring is engaged with the second rotating arm 48 and the seat back frame. At this time, when the second rotating arm 48 is in the initial position shown in FIG. 13A, the fourth spring means 52 is in a free state, and the second rotating arm 48 is in the fourth spring. It is not energized by means 52. In this way, the second rotating arm 48 is held in its initial position.

  Further, as shown in FIG. 13A, one end of a third wire 53, which is an example of a third connecting means, is fixedly locked to the first rotating arm 47, and the third The wire 53 extends inside the seat back 12 as shown in FIG. 4, and the other end side of the third wire is inserted into a through hole 54 formed in the slider 41 as shown in FIG. A small block 55 that is slidably fitted and has a diameter larger than the diameter of the through hole 54 is fixed to the other end. At that time, as shown in FIG. 1, the seat back 12 is locked in the use position by the second lock member 24, and the seat cushion 13 is locked in the use position by the first lock member 23. When the handle arm 16 occupies the retracted position, the small block 45 fixed to the other end of the second wire 44 has a third wire as shown in FIG. It occupies a position closer to the slider 41 occupying the home position than the small block 55 fixed to the other end of 53. A distance LM is provided between one small block 45 and the other small block 55.

  As shown in FIG. 10, one end of a fourth wire 56, which is an example of a fourth connecting means, is fixedly locked to the second pole 33, and the other end side of the fourth wire 56. Is slidably fitted into a through hole 57 formed in the second rotating arm 48, and has a diameter larger than the diameter of the through hole 57 at the other end, as shown in FIG. A small block 58 is fixed. When the second pole 33 is in the engagement position shown in FIG. 10A and the second rotating arm 48 is in the initial position shown in FIG. It is in contact with or close to the second rotating arm 48.

  As shown in FIG. 1, with the seat back 12 and the seat cushion 13 in the use position, and the handle arm 16 occupying the storage position, the operator moves the handle arm 16 from the storage position toward the use position. When the slider 41 is rotated to move from the home position shown in FIG. 12A toward the operating position shown in FIG. 12B, the slider 41 is moved as described above. First, the second wire 44 is pulled in the direction of the arrow O so as to hit the small block 45 fixed to the other end of the second wire 44, so that the first pole 26 is connected to the first lock member 23. The first locking member 23 is disengaged from the engaging portion 29 and rotated to the unlocking position shown in FIG. Thus, when the handle arm 16 is rotated to the intermediate position between the storage position and the use position indicated by the two-dot chain line in FIGS. 1 and 12A, the seat by the first lock member 23 is used. The lock with respect to the cushion 13 is released. After the slider 41 starts to pull the second wire 44 in this way, the slider 41 is fixed to the other end of the third wire 53. At this time, the third wire 53 is pulled in the direction indicated by the arrow P in FIGS. 12 (a) and 13 (a). As a result, the first rotating arm 47 that has previously occupied the initial position shown in FIG. 13A is pulled by the third wire 53 and starts rotating in the direction of the arrow Q. The first rotating arm 47 hits the second rotating arm 48 that occupied the initial position, and as shown in FIG. 13B, the second rotating arm 48 is rotated in the direction of the arrow R. Move. In this way, after the first turning arm 47 turns the second turning arm 48, the first turning arm 47 gets over the second turning arm 48 as shown in FIG. The pressing action on the rotating arm 48 is released. When the handle arm 16 is rotated to the use position and the slider 41 reaches the operating position shown in FIG. 12B, the first rotating arm 47 is moved to the position shown in FIG. The end position shown is reached and stops here. When the pressing action on the second turning arm 48 by the first turning arm 47 is released, the second turning arm 48 is moved by the action of the fourth spring means 52 in FIG. Is rotated in the direction opposite to the direction indicated by the arrow R, and is rotated to the initial position shown in FIG.

  As described above, when the second rotating arm 48 is pressed by the first rotating arm 47 and rotates from its initial position, the second rotating arm 48 is connected to the fourth wire 56. The small block 58 fixed to the other end is pressurized, and the fourth wire 56 is pulled in the direction indicated by the arrow T in FIGS. 10 (a) and 13 (b). As a result, the second pole 33 shown in FIG. 10A rotates around the pin 34 in the direction of the arrow J, and the claw portion is disengaged from the engaging portion 36 of the second lock member 24. As a result, as described above, the second lock member 24 rotates to the unlock position shown in FIG. 10B, and the lock on the seat back 12 is released. In this way, the seat back 12 can be rotated to the non-use position shown in FIG.

  As described above, by moving the slider 41 from its home position to the operating position, the third wire 53 is pulled, whereby the first rotating arm 47 and the second rotating arm 48 are moved to their respective positions. It is rotated from the initial position, the small block 55 of the fourth wire 56 hitting the second rotating arm 48 is pressurized, the fourth wire 56 is pulled, and the second pole 33 is moved along with this. The lock on the seat back 13 is released by releasing the engagement portion 36 of the second lock member 24. At this time, the slider 41 moving from the home position to the operating position first pulls the second wire 44, then pulls the third wire 53, and starts pulling these wires 44, 53 with a time difference. Is unlocked, and then the seat back 12 is unlocked. For this reason, as described above, the seat cushion 13 can first rotate to the non-use position shown in FIG. 2 without any trouble, and then the seat back 12 can turn to the non-use position shown in FIG.

  In addition, after the first rotating arm 47 gets over the second rotating arm 48, the second rotating arm 48 is moved to the initial position shown in FIG. At this time, the second rotating arm 48 does not pressurize the fourth wire 56, and the second locking member 24 occupies the unlocking position shown in FIG. The first pole 26 is held at the disengagement position in contact with the second lock member 24. For this reason, even if the 2nd rotation arm 48 rotates to the initial position, the 4th wire 56 does not operate, but as shown in (c) of Drawing 13, the 2nd which returned to the initial position The rotating arm 48 and the small block 58 fixed to the fourth wire 56 are greatly separated from each other.

  As described above, the unlocking means of this example includes the first rotating arm 47 supported by the seat back 12 so as to be rotatable between the initial position and the terminal position, and the slider 41 from its home position. A third connecting means for connecting the slider 41 and the first rotating arm 47 so that the first rotating arm 47 rotates from its initial position to the terminal position when moving toward the operating position; The first rotating arm 47 is supported by the seat back 12 so as to be rotatable, and a third spring means 49 that urges the first rotating arm 47 to rotate in the direction in which the first rotating arm 47 rotates to its initial position. A second rotating arm 48, a fourth spring means 52 that urges the second rotating arm 48 in a direction in which the second rotating arm 48 rotates to its initial position, and a seat The back 12 is used by the second locking member 24. In the locked state, the handle arm 16 started to rotate from its retracted position, and the first rotating arm 47 that started to rotate from the initial position to the end position along with this occupied the initial position. When the second pivot arm 48 is pressed to pivot the second pivot arm 48, the second pole 33 is disengaged from the engagement portion 36 of the second lock member 24, and the engagement release position. The second lock member 24 is allowed to rotate to the unlock position by the action of the second spring means 35, but the second lock member 24 occupies the unlock position. Thus, even if the second rotating arm 8 is rotated to its initial position by the action of the fourth spring means 52, the second rotation is performed so that the second pole 33 remains in its disengaged position. And a fourth connecting means for connecting the movable arm 48 and the second pole 33. .

  Moreover, in this unlocking means, when the first rotating arm 47 rotates from its initial position to the end position, the first rotating arm 47 presses the second rotating arm 48. After the second rotating arm 48 is rotated, the second rotating arm 48 is overcome and the pressure on the second rotating arm 48 is released. The positions of the first and second rotating arms 47 and 48 are set so that the moving arm 48 is rotated to its initial position by the action of the fourth spring means 52.

  In addition, in this unlocking means, the second connecting means, the third connecting means and the slider 41 are configured such that the seat back 12 is locked in its use position by the second locking member 24 and the seat cushion 13. However, the handle arm 16 starts to rotate from the retracted position to the use position while being locked in the use position by the first lock member 23, and the slider 41 moves from the home position to the operating position. The first pole 26 is first disengaged from the engaging portion 29 of the first locking member 23, and then the second pole 33 is disengaged from the engaging portion 36 of the second locking member 24. The rotation start timing of one pole and the rotation start timing of the first rotation arm 48 are regulated.

  Further, the third connecting means has one end fixed to the first rotating arm 47, the other end penetrating the slider 41 so as to be slidable relative to the slider 41, and a small block at the other end. The fourth connecting means has one end fixed to the second pole 33, and the other end is slidable relative to the second rotating arm 48. It is constituted by a fourth wire 56 penetrating the second rotating arm 48 and having a small block 58 fixed to the other end.

  By the way, after the seat back 12 is turned together with the seat cushion 13 to the non-use position shown in FIG. 3, the operator turns the handle arm 16 in the direction of arrow H to place it in the retracted position. As the handle arm 16 is rotated to the retracted position in this way, the slider 41 is pressed by the first wire 42, and the operation position shown in FIG. ) Is returned to the home position shown. For this reason, since the restraining action of the slider 41 on the third wire 53 is released, the first rotating arm 47 is moved by the arrow U in FIG. It rotates in the direction shown, and returns to the initial position shown in FIG. 14A, and the third wire 53 is returned to the initial position shown in FIG. Also at this time, the first rotating arm 47 presses the second rotating arm 48 stopped at the initial position as shown in FIG. 13C, and rotates it in the arrow V direction. Then, the robot moves over the second rotating arm 48 and rotates to the initial position shown in FIG. Moreover, when the first rotating arm 47 gets over the second rotating arm 48 and the pressing action on the second rotating arm 48 by the first rotating arm 47 is released, the second rotation arm 47 is released. The moving arm 48 is rotated in the direction opposite to the arrow V by the action of the fourth spring means 52 and returned to the initial position shown in FIG. Thus, when the second rotating arm 48 rotates, the second rotating arm 48 does not hit the small block 58 fixed to the fourth wire 56, and the second locking member 24. Occupies the unlocked position shown in FIG. 10B, and the second pole 33 is held in the disengaged position in contact with the second lock member 24, so that the second rotation Even if the arm 48 rotates as described above, the second rotating arm 48 only slides with respect to the fourth wire 56, and the fourth wire 56 does not operate.

  As described above, even when the first rotating arm 47 rotates from the terminal position to the initial position, the first rotating arm 47 presses the second rotating arm 48 and the second rotating arm 48. After the rotation arm 48 is rotated, the positions of the first and second rotation arms are set so as to get over the second rotation arm 48 and return to the initial position.

  On the other hand, as the handle arm 16 occupying the use position shown in FIG. 3 is rotated in the direction indicated by the arrow H, and the slider arm 41 is moved to the retracted position, the slider 41 operates as shown in FIG. When returning from the position to the home position shown in FIG. 12C, the first lock member 23 occupies the unlocked position shown in FIG. 9B, and the first pole 26 is the first lock. Since it is in contact with the member 23 and held at the disengaged position, when the slider 41 returns to its home position, the slider 41 simply slides relative to the second wire 44, and the second wire 44 is never activated. In this way, the second connecting means comprising the second wire 44 is such that the handle arm 16 rotates from its use position to the storage position with the first lock member 23 occupying the unlock position. Accordingly, even when the slider 41 returns to its home position, the slider 41 and the first pole 26 are connected so that the first pole 26 remains in its disengaged position.

  By the way, in order to lower the seat back 12 and the seat cushion 13 downward from the position of the upper part of the passenger compartment shown in FIG. 3, first, the above-mentioned lock claw (not shown) is rotated and stored in the retracted position. After unlocking the handle arm 16, the handle arm 16 is rotated in the direction opposite to the arrow H to bring the handle arm 16 to the use position. As a result, the slider 41 moves again to the operating position shown in FIG. Thereby, the third wire 53 that has been in the position shown in FIG. 12C is pulled again in the direction of the arrow P and moves to the position shown in FIG. Therefore, the first rotating arm 47 that was in the initial position shown in FIG. 14A is rotated again in the direction of the arrow Q, and the second rotating arm 48 is rotated in the direction of the arrow R. Then, the vehicle passes over the second rotating arm 48, reaches the end position shown in FIG. 14B, and stops here. Also in this case, when the first rotating arm 47 gets over the second rotating arm 48, the second rotating arm 48 is shown in FIG. 14B by the action of the fourth spring means 52. Return to the initial position. Also at this time, the second rotating arm 48 does not pressurize the small block 58 fixed to the fourth wire 56, and the second wire 44 is not moved by the slider 41. Both the first and second locking members 23 and 24 still occupy the unlocking positions shown in FIGS. 9 and 10B.

  On the other hand, when the handle arm 16 is rotated from the retracted position to the use position shown in FIG. 3, the third lock member 61 (FIG. 1) provided on the seat back 13 is fixed to the vehicle body as will be described later. The third striker 62 is released and the seat back 12 is unlocked.

  Therefore, the operator grasps the handle arm 16 occupying the use position with his / her hand, and rotates the seat back 12 together with the seat cushion 13 in the direction indicated by the arrow F in FIG. Bring to the indicated use position. At that time, when the seat back 12 reaches the position immediately before the use position, the contact portion 59 of the second lock member 24 shown in FIG. 10B is shown in FIG. The second locking member 24 hitting the second striker 38 and thereby occupying the unlocking position until then, against the action of the second spring means 35, the arrow W in FIG. It rotates in the direction indicated by. Therefore, when the seat back 12 reaches the use position, the second lock member 24 rotates to the lock position shown in FIG. 10A, and the engagement recess 37 engages with the second striker 38. At the same time, the second pole 33 is rotated in the direction opposite to the arrow J by the tensile action of the second spring means 35, and its claw portion engages with the engagement portion 36 of the second lock member 24. To do. The second pole 33 rotates to the engagement position. In this way, the seat back 12 is locked in its use position.

  As described above, when the second lock member 24 is rotated from the unlocked position to the locked position, and when the second pole 33 is rotated to the engaged position, the fourth wire 56 is The second pole 33 is pulled in the direction indicated by the arrow X in FIGS. 10 and 14B, but when the second pole 33 occupies the disengaged position, the fourth wire 56 As shown in FIG. 14B, the fixed small block 58 is separated from the second rotating arm 48 that occupies the initial position, so that the fourth wire 56 is pulled in the arrow X direction. However, the 4th wire 56 only slides with respect to the 2nd rotation arm 48, and the 2nd rotation arm 48 does not rotate. When the second lock member 24 is rotated to the lock position and the fourth wire 56 is pulled in the arrow X direction, the small block 58 fixed to the second wire 56 is moved to the second position as shown in FIG. It is in contact with or in close proximity to the pivot arm 48. Thus, the seat back 12 can be automatically locked with respect to the vehicle body 1 simply by rotating the seat back 12 from the non-use position to the use position while bringing the handle arm 16 to the use position. it can.

  As described above, when the seat back 12 rotates from the non-use position to the use position, the second lock member 24 collides with the second striker 38 and rotates, and the engagement recess 37 is in the second position. The second pole 33 engages with the engaging portion 36 of the second lock member 24 by the action of the second spring means 35 and engages with the striker 38, so that the seat back 12 is relative to the vehicle body 1. And locked.

  Next, as shown in FIG. 2, the operator presses the handle arm 16 in the use position toward the front of the vehicle body, rotates it in the direction opposite to the arrow G, and moves the handle arm 16 to the retracted position. Fit. Along with this operation, the slider 41 is pressed by the first wire 42 and moves from the operating position shown in FIG. 12D to the home position shown in FIG. At this time, since the slider 41 slides with respect to the second wire 44, the second wire 44 does not operate, and the wire 44 stays at the position shown in FIG.

  On the other hand, when the slider 41 returns to the home position shown in FIG. 12C, the first rotating arm 47 shown in FIG. 14C is attached by the action of the third spring means 49. Then, it rotates in the direction of arrow U, gets over the second rotating arm 48 and returns to the initial position. As a result, the third wire 53 moves to the initial position shown in FIG. Also at this time, the second rotating arm 48 is pressed by the first rotating arm 47 and rotated in the direction of the arrow V, and then returns to its initial position again by the action of the fourth spring means 52. At this time, the second rotating arm 48 does not pressurize the small block 58 fixed to the fourth wire 56, and the fourth wire 56 does not operate.

  As described above, when the handle arm 16 is retracted from the use position to the retracted position, the operator presses the handle arm 16 toward the front of the vehicle body. At this time, the seat back 12 is already against the vehicle body 1. Since it is locked, the seat back 12 does not rotate in the direction indicated by the arrow E in FIG. 2 due to the pressing force applied to the handle arm 16. For this reason, the handle arm 16 can be easily rotated to the storage position.

  Next, the seat cushion 13 shown in FIG. 2 is rotated in the direction of arrow D to bring the seat cushion 13 to the use position shown in FIG. 1, but the seat cushion 13 is brought to a position immediately before the use position. 9b, the contact portion 60 of the first lock member 23 shown in FIG. 9 (b) hits the first striker 31 shown in FIG. 9 (a). The first lock member 23 occupying the position rotates in the arrow Y direction against the action of the first spring means 28. For this reason, when the seat cushion 13 reaches the use position, the first lock member 23 rotates to the lock position shown in FIG. 9A, and the engagement recess 30 is engaged with the first striker 31. At the same time, the first pole 26 is rotated in the direction opposite to the arrow I by the tension action of the first spring means 28, and the claw portion thereof is engaged with the engaging portion 29 of the first lock member 23. Engage. The first pole 26 rotates to the engagement position. In this way, the seat cushion 13 is locked in its use position.

  As described above, when the first pole 26 rotates to the engagement position, the second wire 44 is pulled in the direction indicated by the arrow Z in FIG. When returning to the locked position and the first pole 26 is rotated to the engaged position, the second wire 44 has moved to the initial position shown in FIG. In this way, all members are returned to the positions shown in FIGS. 1, 9A, 10A, and 12A.

  As described above, when the seat cushion 13 rotates from the non-use position to the use position, the first lock member 23 collides with the first striker 31 and rotates, and the engagement recess 30 is the first. The first pole 26 is engaged with the engaging portion 29 of the first lock member 23 by the action of the first spring means 28, and the seat cushion 13 is attached to the vehicle body 1. And locked.

  The first and second lock members 23 and 24 provided on the side of one seat end in the vehicle width direction and the configuration related thereto have been described above. The other seat end side also has first and second locking members and associated components. Since these are the same as the first and second lock members 23 and 24 and the configuration related thereto, description thereof will be omitted.

  Further, the first and second lock members 23, 24, the first and second poles 26, 33 arranged on the side portions of the seat cushion 13 and the seat back 12, and a part of the wire are not shown. So that these members are not touched directly. Similarly, the spiral springs 75 and 75A, the projecting portion 78, the pressurizing portion 78A and the like shown in FIGS. 6 to 8 are also covered with a cover (not shown), and these members cannot be touched directly. It is like that.

  Next, the 3rd locking member 61 demonstrated briefly previously and the structure relevant to this are demonstrated.

  As shown in FIG. 1, the third lock member 61 is provided inside the seat back 12. FIG. 15 is a diagram in which the seat back 12 and the seat cushion 13 lifted to the non-use position are represented by phantom lines and the third lock member 61 and the configuration related thereto are clarified. The third locking member 61 is disposed in a space SA formed on the base side of the seat back 12, and rotates in a direction of arrows a and b via a pin 64 to a base 63 fixed to the seat back 12. It is supported movably.

  On the other hand, the handle arm 16 is fixed to the pin 19 described above, and the pin 19 is rotatably supported by the seat back frame of the seat back 12. In FIG. 15, for convenience of explanation, the handle arm 16 and the pin 19 are shown apart. A proximal end portion of the first link 65 is fixed to the pin 19, and one end side of the second link 67 is connected to the distal end portion of the first link 65 via a connecting pin 66 so as to be relatively rotatable. Has been. The other end of the second link 67 is connected to the third lock member 61 via another connecting pin 68 so as to be relatively rotatable.

  When the handle arm 16 is stored in the retracted position as shown by the solid line in FIG. 15, the first and second links 65 and 67 and the third lock member 61 also occupy the position shown by the solid line in FIG. At this time, the engaging recess 69 formed in the third lock member 61 engages with the third striker 62 fixed to the inner panel 2A (FIG. 1) of the roof panel constituting the vehicle body, thereby the seat. The back 12 together with the seat cushion 13 is locked in its non-use position. A part of the third striker 62 enters the empty space through the opening OP of the empty space SA of the seat back 12, and the third lock member 61 engages with the third striker portion. The position of the third lock member 61 at this time is the lock position of the third lock member 61. As shown in FIG. 11, the third striker 62 has substantially the same shape as the first and second strikers 31 and 38, and the base end portion 81 is fixed to the inner panel of the roof panel. Yes.

  When the handle arm 16 is rotated to the use position as shown by a broken line in FIG. 15, the pin 19 is rotated in accordance with the movement of the handle arm 16, and therefore the first link 65 fixed to the pin 19. Rotates in the direction of arrow c and occupies the position indicated by the broken line. Accordingly, the second link 67 also moves to the position indicated by the broken line, and the third lock member 61 rotates in the direction of arrow a. As a result, the engagement recess 69 of the third lock member 61 is disengaged from the third striker 62 as shown by a broken line in FIG. 15, and the lock on the seat back 12 is released. The position of the third lock member 61 at this time is the unlock position of the third lock member 61. In this way, by releasing the lock on the seat back 12, as described above, the operator grasps the handle arm 16 that has occupied the use position, and the seat back 12 together with the seat cushion 13 in FIG. It can be rotated to the indicated position.

  When the seat back 12 is brought into the non-use position shown in FIGS. 3 and 15 together with the seat cushion 13 and the handle arm 16 is put in the storage position shown by a solid line in FIG. 15, the first and second links 65, 67 moves to the position indicated by the solid line, and accordingly, the third lock member 62 rotates in the direction of the arrow b to reach the lock position, and its engaging recess 69 engages with the third striker 62. Thus, the seat back 12 is locked at the non-use position.

  The first and second links 65 and 67 and the connecting pins 66 and 68 show an example of interlocking means for rotating the third lock member 61 in conjunction with the rotation of the handle arm 16.

  As described above, when the seat back 12 is in its non-use position, the automobile of this example engages with the third striker 62 fixed to the vehicle body 1, so that the seat back 12 is attached to the vehicle body 1. The third lock member 61 has a lock position where the engagement recess 69 engages with the third striker 62 to lock the seat back 12 in the non-use position. The engagement recess 69 is detached from the third striker 62 and is supported by the seat back 12 so as to be pivotable between the unlock position for unlocking the seat back 12 with respect to the vehicle body 1, and the handle arm 16 is When in the use position, the third locking member 61 occupies the unlocked position, and when the handle arm 16 is rotated to the retracted position, the third locking member 61 occupies the locked position. , In conjunction with the rotation of the handle arm 16, interlocking means for rotating the third locking member 61 is provided on the seat back 12.

  By the way, when the seat backs 12 folded together as shown in FIG. 2 are rotated together with the seat cushion 13 to the non-use position shown in FIG. Is used. At this time, when the temperature is low, the pressure inside the gas damper stays, so that the seat back 12 cannot be rotated together with the seat cushion 13 to the non-use position shown in FIG. May stop. When the seat back 12 is lifted to the non-use position only with the operator's force together with the seat cushion 13, or the seat back 12 is lifted to the non-use position by using a spring force other than the gas damper stage. A similar situation may occur. In such a case, it is not easy to lift the seat back 12 and the seat cushion 13 lifted to a position immediately before the non-use position to the non-use position only by the operator's human power.

  Therefore, in the automobile of this example, when the operator grasps the handle arm 16 in the use position and lifts the seat back 12 together with the seat cushion 13 to a position just before the non-use position, the seat back 12 and the seat cushion. When 13 stops, the seat back 12 is naturally rotated to the non-use position together with the seat cushion 13 only by rotating the handle arm 16 to the storage position. The specific configuration is as follows.

  FIG. 16A shows a state when the seat back 12 reaches the position immediately before the non-use position when the seat back 12 is lifted to the non-use position by grasping the handle arm that has occupied the use position. Is shown. In this figure, the handle arm is not shown, but at this time, the handle arm 16 occupies the use position shown in FIG. In this state, when the operator rotates the handle arm 16 in the direction indicated by the arrow H in FIG. 3, the third striker 61 slightly rotates in the direction of the arrow b as shown in FIG. Then, the guide surface 70 in the vicinity of the engagement recess 69 abuts on the third striker 62. In this state, when the handle arm is further rotated toward the retracted position, the third lock member 61 is further rotated in the direction of the arrow b. At this time, the guide surface 70 is slid onto the third striker 62. Thus, the seat back 12 rotates together with the seat cushion 13 toward the non-use position, and the engagement recess 69 of the third lock member 61 is engaged with the third striker 62 as shown by the solid line in FIG. Match. At this time, the seat back 12 is brought together with the seat cushion 13 to the non-use position. As described above, the seat back 12 stopped at the position immediately before the non-use position can be lifted to the non-use position by simply rotating the handle arm 16 from the use position to the retracted position. Can be rotated to a non-use position.

  As described above, in the automobile of this example, with the handle arm 16 brought to the use position, the seat back 12 is rotated from the use position toward the non-use position, and the seat back 12 is moved to the non-use position. When the handle arm 16 is turned to the position immediately before and stopped, the handle arm 16 is turned from the use position to the storage position, and the third lock member 61 is turned from the unlock position to the lock position. At this time, the third lock member 61 is formed with a guide surface 70 that engages the engagement recess 69 of the third lock member 61 with the third striker 62 while being in sliding contact with the third striker 62.

  FIG. 15 shows one third lock member 61, but a plurality of third lock members are provided at intervals in the vehicle width direction, and each lock member is interlocked with the rotation of the handle arm 16. If configured to operate as described above, the seat back 12 occupying the non-use position can be locked in a more stable state.

1 is a schematic cross-sectional view of an automobile, and is a view showing a state of a passenger compartment when a seat back and a seat cushion are in a use position. FIG. 2 is a schematic cross-sectional view similar to FIG. 1, illustrating a state when the seat cushion is rotated to a non-use position where the seat cushion is stacked on the seat back. FIG. 2 is a schematic cross-sectional view similar to FIG. 1, showing a state when the seat back is brought to a non-use position in the upper part of the passenger compartment. It is the perspective view which looked at the seat from diagonally backward. It is explanatory drawing which shows the relationship between a seat back frame, the support shaft fixed to this, and the bracket of a seat cushion. It is a figure which shows the relationship between a support shaft and the spiral spring as an urging | biasing means. FIG. 7 is a view as seen in the direction of arrow VII in FIG. 4 and shows a specific configuration of the braking means. It is a graph which shows the relationship between the rotation angle of a seat cushion, and the angular velocity of the seat cushion. It is a figure explaining the effect | action of a 1st locking member and a 1st pole. It is a figure explaining the effect | action of a 2nd locking member and a 2nd pole. It is a front view of a striker. It is a figure explaining operation | movement of a handle arm and a slider. It is a figure explaining operation | movement of the 1st and 2nd rotation arm. It is a figure explaining operation | movement of the 1st and 2nd rotation arm. It is a figure explaining the effect | action of a 3rd locking member. It is a figure explaining the function of the guide surface formed in the 3rd locking member.

Explanation of symbols

12 Seat back 13 Seat cushion 15, 15A Support shaft 75, 75A Spiral spring 76, 76A Base end part 77, 77A Tip part 78 Projection part 78A Pressure part 79 Tip part P Seated person

Claims (7)

A rotating body supported by a support shaft so as to be rotatable between an initial position and a terminal position; and a biasing means for biasing the rotating body toward the terminal position; In the rotating body device in which the rotating body is rotated so that the rotating body occupies a higher position when the rotating body is in the end position than in the initial position. Due to the action, the rotating body that has started to rotate from the initial position biases the rotating body toward the initial position from the time before reaching the end position to the end position, A rotating body device provided with a braking means for applying a braking action. The braking means includes a spiral spring having a base end locked to the support shaft, and a pressurizing portion provided on the rotating body, and the rotating body starting to rotate from an initial position is The spiral spring urges the rotating body toward the initial position from when it is rotated to a predetermined angular position between the position and the end position until it is rotated to the end position. The rotating body device according to claim 1, wherein the pressure portion pressurizes a tip portion of the spiral spring to elastically deform the spiral spring. 3. The rotating body device according to claim 2, wherein the urging unit includes a spiral spring having a base end portion locked to the support shaft and a distal end portion locked to a protrusion formed on the rotating body. 4. The device according to claim 1, further comprising a lock unit that locks the rotating body at the initial position when the rotating body is in the initial position and releases the lock when the rotating body is rotated. Rotating body device. The rotating body includes a seat cushion that is disposed in a vehicle cabin and supports a seated person's buttocks. The seat cushion is used in the initial position, and when the seat cushion is not used, the terminal end is used. The rotating body device according to claim 1, wherein the rotating body device is stored at a position. The rotating body device according to claim 5, wherein the seat cushion is rotatably supported by a support shaft provided on a seat back that supports a back of a seated person. An automobile comprising the rotating body device according to claim 5.

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