JP2006015940A - Seat stored in ceiling for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automate a ceiling-stored seat with drive of a motor without complicating a constitution while preventing interference with a front seat. <P>SOLUTION: A support arm 16 is made telescopic in its axial direction, and is rotated to a predetermined lock releasing position by a power of a rotating motor 18 at the time of recovering from a storing position. After the arm is extended to a predetermined extension condition by starting a telescopic motion motor 20 after the rotating motor is stopped, the support arm is locked by a predetermined lock means, while the support arm is contracted to a predetermined contracted condition by the power of the telescopic motion motor at a predetermined lock releasing position after the lock is released by a predetermined lock releasing means. The support arm is rotated to the storing position by starting the rotating motor after the telescopic motion motor is stopped. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a storage sheet that can be stored in a specific storage position, and more particularly to a vehicular ceiling storage sheet that defines a position along a ceiling surface of a vehicle body as a storage position.

  As a storage seat that can be stored at a specific position as a rear row seat (rear seat) for a multi-purpose vehicle or the like, for example, a so-called ceiling storage seat having a storage position at a position along the ceiling surface of the vehicle body is known. . For example, the configuration disclosed in Japanese Utility Model Laid-Open No. 2-121435 is cited as an example of the ceiling storage sheet.

  In this known example of a ceiling storage seat, a seat body including a seat cushion and a seat back is connected and supported by a rotatable support arm suspended from the ceiling. And, the ceiling storage seat, after transforming the seat body from its seating form to a predetermined storage form, by turning the support arm on the front side around the rotation fulcrum arranged on the ceiling, The seat is stored in a position along the ceiling surface of the vehicle body from the seating position.

  By the way, in this publicly known configuration, the tip of the support arm having the rotation fulcrum arranged on the ceiling of the vehicle body is fixedly connected and held to the floor body in its sitting posture. The support arm is required to have a length that can be extended from the ceiling to the floor. That is, in this known configuration, it is inevitable that the turning radius of the support arm is increased. And since this support arm is rotated on the front side of the rotation fulcrum, depending on the front / rear slide position of the front seat such as the front seat or the reclining angle of the seat back, the ceiling storage seat is Interference and contact with the front seat may occur during the rotation between the retracted position and the seated position.

  Such interference and contact with the front seat can be prevented by correcting the position and posture of the front seat in advance, but such prior change operation complicates the storing / restoring operation of the ceiling storage seat itself. Therefore, in a known configuration having a large turning radius, the operability is likely to be lowered when the ceiling storage sheet is stored, restored, that is, moved.

  In addition, since the seat body is usually arranged at the tip side of the support arm, that is, at a position away from the rotation fulcrum, it is also possible to avoid applying a large load to the tip side of the support arm that is the operation point. Absent. In other words, in a known configuration having a large turning radius, there is an undeniable possibility that the operability will be lowered even in such a weight aspect.

  Here, as this type of ceiling storage sheet, for example, a configuration disclosed in Japanese Patent Application Laid-Open No. 10-338064 is also known. The ceiling storage seat is configured to store only the seat back at a position along the ceiling surface of the vehicle body, and the seat cushion is folded and stored on the floor surface.

  In other words, in the second example of the ceiling storage seat, the weight of the seat body supported by the support arm is reduced by the amount of the seat cushion. Accompanied by a drop in And since it is the structure which stores a seat cushion on a floor surface, there exists a possibility that the unevenness | corrugation on a floor surface may be accompanied, and the reduction of the effect may also occur in the point of the extension of luggage space.

  By the way, in passenger cars and the like, motor-driven automation is generally regarded as one of the added values for the seat attitude control device and the like, and the same applies to the above-described ceiling storage seat. Actually, a ceiling storage sheet provided with a motor is disclosed in Japanese Patent Application Laid-Open No. 7-323772 and the like, although the support fulcrum is on the floor side.

  However, as described above, in this type of known configuration, the rotation radius of the support arm is large, and the seat main body that is the main body of the load is arranged on the front end side of the support arm. When the support arm is rotated under the drive of the motor, a large operating torque is required for the motor, and therefore, the motor itself and other mechanisms are complicated and the overall cost is increased. Is inevitable.

And if it is a structure in which interference with the front seat may occur, automation by motor driving tends to be difficult in terms of safety.
Japanese Utility Model Publication No. 2-121435 Japanese Patent Laid-Open No. 10-338064 Japanese Patent Laid-Open No. 7-323772

  The problem to be solved is that the support arm has a long turning radius, so that interference with the front seat is likely to occur, and the weight is mainly applied to the tip side of the support arm. Is not suitable.

  According to the first aspect of the present invention, the support arm can be expanded and contracted in the axial direction thereof, the rotating motor serving as a drive source when rotating the support arm, and the expansion and contraction serving as a drive source when expanding and contracting the support arm. One feature is that each motor is disposed in the ceiling of the vehicle body so that its power can be transmitted to and applied to the support arm. According to the first aspect of the present invention, when restoring from the retracted position, the support arm in the contracted state is rotated to a predetermined unlocking position by the power of the rotation motor, and the expansion and contraction after the rotation of the rotation motor is stopped. After extending to a predetermined extended state under the activation of the motor, the support arm in this extended state is locked by locking the locking means accompanying the pushing against the urging force of the urging means from this unlocked position. The holding arm is fixedly held at the seating position, and after being unlocked by a predetermined unlocking means, the support arm rotated and held at the unlocking position under the biasing force of the biasing means is driven by the power of the telescopic motor. It is assumed that the support arm in the contracted state is rotated to the retracted position under the activation of the rotating motor after the contracting motor is stopped after the contracting motor is contracted. Are the most important features.

  According to a second aspect of the present invention, the lock means includes a striker fixed to one of the vehicle body and the support arm, and a catch unit configured to be able to hold the striker fixedly and provided on the other side. Further, the main feature is that the lock release means for performing the lock release operation on the lock means is provided on the same member as the catch unit as a manual release lever.

  According to a third aspect of the present invention, the locking means is a combination of a striker fixed to the vehicle body and a catch unit that is configured to be able to hold the striker fixedly and is provided on the support arm. The unlocking means for performing the unlocking operation with respect to the locking means is formed from an operating means that is controlled by the control means. The main feature is that the drive of the telescopic motor starts after a predetermined time has elapsed.

  According to a fourth aspect of the present invention, there is provided an assist spring provided for the purpose of reducing the load load during the storage drive by the rotation motor so that an urging force in the storage position direction can be applied to the support arm. The most important feature is that the assist spring is also used as a biasing means by applying the biasing force of the spring in the same direction between the unlocking position and the seating position.

  Further, according to the present invention, a drive shaft driven by the power of the rotating motor is installed and supported between a pair of left and right base brackets provided in the ceiling of the vehicle body. By connecting the support arm so as to be integrally rotatable, the drive shaft is used as a rotation fulcrum of the support arm.

  According to a sixth aspect of the present invention, a drive shaft serving as a pivot point of the support arm is installed between and supported by a pair of left and right support brackets, and the power of the rotation motor is transmitted and applied to the drive shaft. By doing so, it is possible to ensure the rotation of the support arm by the power of the rotation motor, and to connect and support the support arm to the drive shaft, and a movable part that is expanded and contracted relative to the base. A guide member having a combination of the above is provided as a constituent base, and the power of the expansion / contraction motor is transmitted to and applied to the guide member via a predetermined expansion / contraction transmission means. The most important feature is that it is performed under the power of the telescopic motor.

  According to claim 7 of the present invention, the guide member is embodied as a cylinder-type shock absorber that extends at least under the weight of the seat body. Then, the expansion / contraction transmission means is wound around the rotary shaft that is rotationally driven by the power of the expansion / contraction motor, the wire take-up reel provided integrally with the rotary shaft, and the wire take-up reel. It has a combination of a wire, an upper pulley rotatably provided on the drive shaft, and a rotatable lower pulley provided at the tip of the movable part of the shock absorber, and the tip of the wire drawn from the wire take-up reel is The shock absorber is fixedly connected to and supported by the base of the cylinder-type shock absorber through the upper pulley and the lower pulley, and the wire is taken up and sent out as the wire take-up reel is rotated by the power of the telescopic motor. The main feature of the seventh aspect is that the expansion and contraction of the lens can be controlled.

  According to the vehicular ceiling storage seat according to claim 1 of the present invention, since the support arm that supports the seat body can be expanded and contracted, even if the support arm has a length that can be fixedly held, The contraction makes it possible to shorten the turning radius. In other words, since rotation without interference, contact, etc. with the front seat is possible without any prior operation with respect to the front seat, the operability and workability are surely improved. According to the above, it is surely obtained.

  And since the weight burden at the time of rotation of the support arm can be reduced by shortening the rotation radius accompanying the contraction of the support arm, the advantage that automation by the motor drive becomes possible without complicating the configuration, etc. Can also be obtained.

  Further, since the turning radius of the support arm can be shortened, the advantage that the safety in the automation by the motor drive is improved can be obtained simultaneously according to the first aspect.

  Since both the rotation motor and the telescopic motor are arranged in the ceiling of the vehicle body, deterioration of the outer pipe quality is prevented and the power of each motor is transmitted near the rotation center of the support arm. Therefore, each advantage that the configuration itself can be simplified can also be obtained according to the first aspect.

  Further, in the configuration of claim 2 of the present invention, the locking means is provided on the other side so that the striker fixed to either one of the vehicle body and the support arm and the striker can be fixedly gripped. By combining with the catch unit and embodying the unlocking means for performing the unlocking operation on this locking means as a manual lever provided on the same member as the catch unit, the realization is improved. There is an advantage that operability can be improved.

  Furthermore, in the structure of Claim 3 of this invention, the lock release means which performs lock release operation with respect to the lock means which is a combination of a striker and a catch unit is formed from the operation means controlled by the control means. Therefore, there is an advantage that operability can be improved by automatically releasing the lock. And in this Claim 3, since the operation | movement order of this operation means is limited as what precedes the starting of the expansion-contraction motor by operation of the storage switch of a control means, smooth storing operation can fully be ensured. There are advantages.

  Further, according to the fourth aspect of the present invention, since the assist spring provided for the purpose of reducing the load load at the time of the storage drive by the rotation motor is also used as the urging means, the configuration is simplified by deleting the number of parts. Has the advantage that it can be fully covered.

  According to claim 5 of the present invention, the drive shaft driven by the power of the rotation motor is installed and supported between a pair of left and right base brackets provided in the ceiling of the vehicle body. On the other hand, since the drive arm is connected to the support arm so as to be integrally rotatable, the drive shaft is used as a rotation fulcrum of the support arm.

  Further, according to claim 6 of the present invention, the drive shaft serving as the pivot point of the support arm is installed between and supported by the pair of left and right support brackets, and the power of the rotational motor is transmitted to the drive shaft. By providing, it is possible to ensure the rotation of the support arm by the power of the rotation motor, and the support arm is connected to and supported by the drive shaft, and the movable part is expanded and contracted relative to the base. A guide member having a combination with a portion is provided as a constituent base, and the power of the expansion / contraction motor is transmitted to and applied to the guide member via a predetermined expansion / contraction transmission means. Since expansion / contraction is performed under the power of the expansion / contraction motor, there is an advantage that simplification of the configuration can be sufficiently achieved.

  According to claim 7 of the present invention, the guide member is a cylinder-type shock absorber, and the expansion / contraction control of the cylinder-type shock absorber is integrated with the rotation shaft that is rotationally driven by the power of the expansion / contraction motor and the rotation shaft. Wire reel, a wire wound around the wire reel, an upper pulley rotatably provided on the drive shaft, and a rotation provided at the tip of the telescopic movable portion of the shock absorber Since the transmission means for expansion and contraction having a combination with a free lower pulley is used, there is an advantage that smooth expansion and contraction can be secured without complicating the configuration.

  The purpose of preventing the interference with the front seat and the like and automating the ceiling storage seat by driving the motor has been realized without complicating the configuration by obtaining the expansion and contraction of the support arm.

  FIG. 1 and FIG. 2 respectively show a schematic longitudinal sectional view and a schematic front view of a vehicle ceiling storage seat 10 according to the present invention at a seating position. The ceiling storage seat can be folded. A pivotable support arm 16 that supports the seat body 12 and has a pivot fulcrum disposed on the ceiling 14 of the vehicle body 13 is configured to be able to extend and contract in the axial direction. Then, as shown in FIG. 3, a rotation motor 18 that is a drive source for rotating the support arm 16 and an expansion / contraction motor 20 that is a drive source for expanding / contracting the support arm 16 receive the power from the support arm. It is disposed in the ceiling 14 of the vehicle body so that it can be transmitted and applied to the vehicle.

  As can be seen from FIG. 1 and FIG. 2, the support arm 16 is a combination of a rotation base 16-1 having a rotation fulcrum and a telescopic movable part 16-2 that is expanded and contracted relative to the rotation base. The left and right ends of the seat back 22 of the seat body 12 are fixedly supported by the extendable movable part.

  The seat body 12 is configured such that the rear end portion of the seat cushion 24 is pivotally attached to the seating surface 22a side of the seatback 22 so that the seat cushion 24 can be lifted up by, for example, a pivot 26, and can be folded when seated. A foldable leg 28 that is formed as a configuration and supports the front portion of the seat cushion when the seat cushion is formed by pulling out the seat cushion from the seat back is provided on the back surface of the seat cushion so as to be rotatable. Yes.

  In addition, the seating surface 22a of the seat back 22 is formed in a substantially concave cross-sectional shape that can accommodate the seat cushion 24 that is flipped up, and the leg 28 of the seat cushion is formed on the back surface of the seat cushion. It is comprised so that accommodation in the back surface recessed part 24a is possible (refer FIG. 4).

  The support arm 16 in the ceiling storage seat 10 is located in the ceiling 14 between the seating position shown in FIG. 1 where the seat body 12 can be seated and the storage position shown in FIG. 5 along the ceiling surface 14a. It is rotated around the arranged rotation fulcrum. In the present invention, the rotation of the support arm 16, specifically, the rotation of the support arm within a predetermined range, which will be described later, is performed under the drive control of the rotation motor 18 described above. .

  As can be seen from FIG. 3, the drive shaft 30 driven by the power of the rotation motor 18 is installed and pivotally supported between a pair of support brackets 32 </ b> L and 32 </ b> R that are spaced apart from each other in the ceiling 14. . The drive shaft is provided as a rotation fulcrum of the support arm 16 by connecting the rotation base 16-1 of the support arm to the drive shaft 30 so as to be integrally rotatable (see FIG. 1).

  As shown in FIG. 3, the rotation motor 18 is fixed and supported to either one of the left and right support brackets, for example, the support bracket 32L via a pedestal or the like. Then, by transmitting and applying the power to one end of the drive shaft 30 via the gear mechanism 34 that also serves as a speed reduction means, the drive shaft is driven by the rotation motor 18, that is, the support arm 16 is rotated. .

  The support arm 16 is configured to be extendable / contractable with a guide member serving as an extensible guide serving as a constituent base. An example of the guide member serving as the configuration base is a cylinder type shock absorber 36 as shown in FIG. A base arm 36-1 of the shock absorber 36 is integrally connected to a holder 38 provided to be rotatable integrally with the drive shaft (rotation fulcrum) 30, so that a support arm having the drive shaft as a rotation fulcrum. 16 is formed.

  The support arm 16 having a good external shape as shown in FIGS. 1 and 2 is formed by covering the shock absorber 36 with a base cover and a movable part cover made of resin or the like. The Further, as shown in FIG. 6, a side bracket 40 is integrally provided on a movable portion 36-2 of the shock absorber 36 with respect to the base portion 36-1, and the seat back frame 42 is fixedly connected to the side bracket. Therefore, the seat back 22 can be fixed to the movable part of the shock absorber, and thus to the telescopic movable part 16-2 of the support arm (see FIG. 2).

  Here, as described above, in the ceiling storage sheet 10 of the present invention, the rotation range of the support arm 16 is along the seating position shown in FIG. 1 where the seating form of the seat body 12 can be formed and the ceiling surface 14a. It is defined as between the storage position shown in FIG. In the ceiling storage seat 10 of this type, the support arm 16 is fixedly held at the seating position with respect to the vehicle body 13 by a predetermined locking means 44 (see FIG. 2).

  As shown in FIG. 2 and FIG. 6, as the locking means 44, for example, a striker 46 fixed to the vehicle body 13, specifically the tire house 13a, and the striker 46 are configured to be able to hold the striker in a fixed manner. The combination with the catch unit 48 provided in the arm 16 can be illustrated.

  Note that the combination of the striker 46 and the catch unit 48 and the basic configuration of the catch unit itself are well known, and the configuration itself is not the gist of the present invention, and a detailed description thereof will be omitted here.

  The catch unit 48 is provided with a predetermined unlocking means that can be interlocked. Examples of the unlocking means include a member on the side where the catch unit 48 is provided, that is, a manual release lever (not shown) provided on the support arm 16.

  Here, as described above, the rotation range of the support arm 16 is set between the seating position shown in FIG. 1 fixedly held by the locking means 44 and the storage position shown in FIG. 5 along the ceiling surface 14a. In the present invention, the drive range of the support arm by the rotation motor 18 is defined as a storage position and a lock position closer to the storage position than the seating position in the entire rotation range. It is limited as between the unlocking position for the means 44.

  This unlocking position of the support arm 16 is defined as, for example, a separation position of the catch unit 48 from the striker 46 shown in FIG. Then, between the unlocked position and the seating position, which is outside the driving range by the power of the rotation motor 18, the support arm 16 moves in the unlocked position direction under the biasing force from a predetermined biasing means. Is being energized.

  As an urging force for urging the support arm 16 from the seating position toward the unlocking position, for example, an urging force in the same direction can be applied to the drive shaft 30 during storage drive by the rotation motor 18. The biasing force of the assist spring 50 provided for the purpose of reducing the load load can be used (see FIG. 3).

  As shown in FIG. 3, the assist spring (biasing means) 50 can be exemplified by a torsion spring wound around the drive shaft 30, but the assist spring itself is generally used for the purpose of reducing the load load. Since it is not different from what is provided, a detailed description of the assist spring is omitted here.

  Further, as described above, in the ceiling storage sheet 10 of the present invention, the support arm 16 is expanded and contracted under the power of the expansion and contraction motor 20, and the expansion and contraction is performed at the unlocking position of the support arm. It is embodied as a limited implementation.

  As can be seen from FIG. 3, the telescopic motor 20 is fixed and supported by a support bracket 32 </ b> R different from the rotation motor 18, and its power is transmitted and applied to the shock absorber 36 via the telescopic transmission means 52. It is supposed to be.

  As the expansion / contraction transmission means 52, for example, a rotation shaft 54 that is rotationally driven by the power of the expansion / contraction motor 20, a wire take-up reel 56 that is provided integrally with the rotation shaft, and a wire take-up reel A combination of the wound wire 58, the upper pulley 60 provided rotatably on the drive shaft, and the rotatable lower pulley 62 provided on the tip of the movable part of the shock absorber can be exemplified (see FIG. 6).

  Similar to the drive shaft 30, the rotary shaft 54 is constructed and pivotally supported between the left and right support brackets 32 </ b> L and 32 </ b> R, and is coupled to the telescopic motor 20 via a predetermined gear mechanism 64.

  Then, a wire 58 is wound around a wire take-up reel 56 provided so as to be rotatable integrally with the rotary shaft 54, and the tip 58a of the wire drawn out from the wire take-up reel is shown in FIG. As described above, the expansion transmission means 52 as a combination of these is fixedly connected to and supported by the shock absorber base 36-1 via the upper pulley 50 and the lower pulley 52, so that the expansion and contraction of the shock absorber, that is, its base The movable portion 36-2 can be expanded and contracted with respect to.

  For example, if the wire 58 is wound around the wire take-up reel 56 by the rotational drive of the rotary shaft 54 by the telescopic motor 20, the shock absorber can be moved by reducing the amount of wire extending from the wire take-up reel. If the portion 36-2 is pulled up and contracted into the base portion 36-1, and the wire is sent out from the wire take-up reel by the rotational drive of the rotary shaft by the telescopic motor, the wire from the wire take-up reel As the amount of extension increases, the movable part of the shock absorber is pulled out from the base and extended.

  The delivery of the wire 58 from the wire take-up reel 56 itself does not have the ability to extend the shock absorber 36. However, by feeding the wire 58 from the wire take-up reel 56, the extension restricting force of the movable portion 36-2 with respect to the base portion 36-1 is gradually released, and the weight of the seat body 12 is applied to the movable portion. By hooking, the shock absorber 36, that is, the extension of the support arm 16 accompanying the delivery of the wire 58 from the wire take-up reel 56 can be obtained.

  The above-described rotation motor 18 and expansion / contraction motor 20 are both driven and controlled by predetermined control means 66 (see FIG. 1).

  The control means 66 has at least a storage switch that performs a storage command and a seating switch (none of which is shown) that performs a restoration command, and sends control signals corresponding to the switch operation to the rotation motor 18 and the telescopic motor. By being sent to 20, the drive control can be performed (see FIG. 3).

  The control means 66 is formed by a predetermined electric circuit, but since the circuit itself is not the gist of the present invention, a detailed description of the electric circuit is omitted here.

  Further, such a control means 66 is usually housed in a box and embedded in a position where switch operation is easy, for example, a floor surface 68 of the vehicle body (see FIG. 1).

  Here, in the present invention, the operation orders of the rotating motor 18 and the telescopic motor 20 are ranked according to the storage time and the restoration time, respectively.

  The operation when the ceiling storage sheet 10 is stored will be described first.

  In the seating position shown in FIG. 1, first, the seat cushion 24 is flipped up and stored in the front recess of the seat back 22, and the leg 28 is folded and stored in the back recess 24a of the seat cushion. The storage form of the sheet body 12 as shown is formed. Then, by releasing the lock of the lock means 44 under the operation of the release lever serving as the lock release means, the support arm 16 can release the lock shown in FIG. 7 under the biasing force of the assist spring 50. It is moved (rotated) to the position.

  At this unlocking position, since the rotation restricting force from the unlocking position toward the storage position by the rotating motor 18 is applied to the support arm 16, the supporting arm is at the unlocking position. Thus, the assist spring 50 is held under the biasing force.

  Then, when the storage switch of the control means 66 is operated at the unlocking position of the support arm 16, the storage operation of the ceiling storage sheet 10 from the unlocking position is started.

  When the retracting switch of the control means 66 is operated, first, under the activation of the telescopic motor 20 based on the activation signal from the control means, the support arm 16 is in the contracted state shown in FIG. Shrinks until. After the stop of the telescopic motor 20 is recognized by a limit switch (not shown) or the like, the support arm 16 is moved from the unlocked position under the activation of the rotation motor 18 based on the activation signal from the control means. The support arm, that is, the ceiling storage seat 10, is rotated in the direction of the storage position and, after reaching the storage position shown in FIG. It is stored and held in a fixed position at the storage position along the surface 14a.

  When the seat switch of the control means 66 is operated at the storage position of the ceiling storage seat 10, first, the support arm 16 is activated under the activation of the rotation motor 18 based on the activation signal from the control means. 5 is rotated from the storage position shown in FIG. 5 to the unlocking position shown in FIG. 8 which is the drive limit position by the rotation motor. Then, the support arm 16 in the contracted state is moved to the predetermined extension shown in FIG. 7 at this unlocked position by the activation of the telescopic motor 20 after the stop of the rotating motor 18 is recognized by a limit switch (not shown) or the like. The support arm in the extended state is fixedly held in the seating position shown in FIG. 4 by the lock of the lock means 44 that is extended from the unlocked position and pushed against the biasing force of the assist spring 50 from the unlocked position. At the same time, by pulling out the seat cushion 24, it is possible to form the seating form of the ceiling storage seat 10 shown in FIG.

  As described above, in the vehicle ceiling storage seat 10 of the present invention, the support arm 16 that supports the seat body 12 can be expanded and contracted, and rotates between the storage position and the unlocking position in the contracted state. The operation form of this support arm is limited. In other words, even with the support arm 16 having a length that can be fixedly held with respect to the vehicle body 13, it is possible to shorten the turning radius due to the contraction of the support arm 16. The rotation of the support arm without contact or the like, that is, the rotation operation of the ceiling storage sheet 10 can be performed without a prior operation with respect to the front seat, and the operability and workability are reliably improved.

  And since the weight burden at the time of rotation of the support arm can be reduced by shortening the rotation radius accompanying the contraction of the support arm 16, automation by motor driving can be easily performed without complicating the configuration. It becomes.

  Furthermore, since the turning radius of the support arm 16 can be shortened, it is possible to reliably improve the safety of the motor-driven automation.

  Further, in the present invention, the unlocking position for the locking means, which is different from the storage position fixedly held by the locking means 44, is defined as the expansion / contraction operation position of the support arm 16 by the expansion / contraction motor 20. In other words, since it is possible to easily ensure an expansion / contraction operation without hindrance by the locking means 44, the safety can be reliably improved in this respect as well.

  In the present invention, since the rotation motor 18 and the telescopic motor 20 are disposed in the ceiling 14 of the vehicle body, the quality of the outer tube of the vehicle itself is reliably improved. Since the power of the rotation motor 18 and the expansion / contraction motor 20 is transmitted to the support arm at a portion close to the rotation fulcrum of the support arm 16, the configuration itself can be sufficiently simplified.

  Here, in the above-described embodiment of the present invention, the locking means 44 is embodied as a combination of the striker 46 and the catch unit 48, but the support arm 16 is fixedly held with respect to the vehicle body 13 in its seating position. Since it is sufficient if possible, the present invention is not limited to this combination, and the lock means may be formed from other combinations.

  However, such a combination of the striker 46 and the catch unit 48 can be arranged without complicating the structure and structure thereof, and can be locked and unlocked by one touch. The operability is also improved with certainty.

  In particular, since the catch unit 48 has a feature of kicking the striker 46 by releasing the lock, according to this configuration, the effect that the support arm 16 can be easily and appropriately secured from the lock position can be ensured. it can.

  In this embodiment, the striker 46 is provided on the vehicle body 13 and the catch unit 48 is provided on the support arm 16. However, it is sufficient if they can be engaged and held with each other. Conversely, the striker may be provided on the support arm and the catch unit may be provided on the vehicle body 13. However, in this case, a release lever serving as a lock release means is provided on the vehicle body 13 which is a member on the same side as the catch unit 48.

  Here, in this embodiment, the unlocking means is embodied as a manual release lever. However, the present invention is not limited to this. For example, an actuator such as an actuator may be used as the unlocking means. Good.

  Actuating means (not shown) such as an actuator is configured to be able to be controlled by the control means 66 in the same manner as the rotation motor 18 and the telescopic motor 20. The operating means is configured to operate prior to activation of the telescopic motor 20 when the support arm 16 is retracted from the sitting position.

  In other words, in the configuration provided with this actuating means as the unlocking means, the operation of the actuating means, that is, the locking means 44 is first performed prior to the start of the telescopic motor 20 by operating the retracting switch of the control means 66 in the seating position. Is unlocked. And the stepwise operation | movement can be obtained by starting the expansion-contraction motor 20 after the predetermined time progress by time-measurement, such as a timer, for example.

  As described above, when an operating means such as an actuator is used as the unlocking means, when the ceiling storage sheet 10 is stored, the storing operation can be performed only by the switch operation of the control means 66, and the operability is further improved. The And since the operation | movement order is prescribed | regulated limitedly, automation excellent in operativity and safety | security becomes possible easily.

  In this embodiment, the urging force of the assist spring 50 is used as the urging force for urging and holding the support arm 16 at the unlocking position. However, the present invention is not limited to this. The supporting arm may be urged and held at the unlocked position by the urging means.

  However, if the assist spring 50 is also used as an urging means for urging and holding the support arm 16 at its unlocked position, the number of parts can be reduced, and the configuration can be simplified easily. It becomes possible.

  Here, in this embodiment, the drive shaft 30 installed and pivotally supported between the left and right support brackets 32L and 32R is embodied as the rotation center of the support arm 16, but the configuration of the rotation center of the support arm is described. Is not limited to this. However, such a configuration can be simplified by using the drive shaft 30 as a rotation center and applying the power of the rotation motor 18 to the drive shaft to obtain the rotation of the support arm 16. I can be sure.

  Further, in this embodiment, the cylinder type shock absorber 36 is illustrated as a guide member serving as a constituent base of the support arm 16, but a base portion connected to and supported by the drive shaft 30, and expansion and contraction with respect to this base portion. For example, a guide rail that is a combination of an upper rail and a lower rail may be used as the guide member.

  However, such a cylinder-type shock absorber 36 is lightweight and compact, and also has a shock absorbing function during expansion / contraction, so that the support arm 16 can be easily expanded / contracted and rotated easily. It is sufficiently possible to secure it. Therefore, by using the cylinder-type shock absorber 36 as a base member, it is possible to easily secure the support arm 16 having excellent operability without complicating the configuration.

  Further, in this embodiment, the expansion / contraction transmission means 52 for transmitting and applying the power of the expansion / contraction motor 20 to the cylinder type shock absorber includes a rotation shaft 54 that is driven to rotate by the expansion / contraction motor, and wire winding of the rotation shaft. It is embodied as having a wire 58 wound around a take-up reel 56 and having its tip fixedly connected to a shock absorber base 36-1 via an upper pulley 60 of a drive shaft 30 and a lower pulley 62 of a shock absorber. However, the configuration is not limited to this combination as long as the power of the expansion / contraction motor can be transmitted to the shock absorber and the power can be converted into the expansion / contraction operation of the shock absorber. Combination of nut and nut or rack and pinion It may constitute the telescoping transmission means.

  However, with the configuration in this embodiment mainly composed of the wire 58, the expansion and contraction of the shock absorber 36 by the power of the expansion and contraction motor 20, that is, the expansion and contraction of the support arm 16 can be easily performed without complicating the configuration. Since this can be ensured, the configuration can be simplified sufficiently.

  It should be noted that if the configuration of the members disposed inside the support arm 16 such as the shock absorber 36 and the expansion / contraction transmission means 52 serving as the configuration base is simplified, the support arm itself can be reduced in size (thinner shaft). ) And the weight can be sufficiently reduced, and by simplifying these configurations, the operability itself is further improved.

  The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention. All modifications, alterations, etc. within the technical scope of the present invention are included in the present invention. Needless to say.

  In general, a ceiling storage seat arranged as a rear row seat (rear seat) such as a multi-purpose vehicle is applicable, but is not limited to this, and other vehicle seats such as bus seats are applicable. The present invention may be applied.

It is a schematic longitudinal cross-sectional view in the seating position of the vehicle ceiling storage seat which concerns on this invention. It is a schematic front view in the seating position of the ceiling storage seat for vehicles. FIG. 3 is a schematic perspective view inside the ceiling of the vehicle body, with the rotation center of the support arm as the main. It is a schematic longitudinal cross-sectional view of the ceiling storage seat for vehicles at the time of the seat main body folding in the seating position. It is a schematic longitudinal cross-sectional view in the storage position of the ceiling storage sheet for vehicles. It is a schematic perspective view of a partial fracture which shows the internal structure of a support arm. It is a schematic longitudinal cross-sectional view in the unlock position of the vehicle ceiling storage sheet. It is a schematic longitudinal cross-sectional view of the ceiling storage sheet for vehicles at the time of contraction of a support arm.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle ceiling storage sheet | seat 12 Sheet | seat main body 16 Support arm 18 Motor for rotation 20 Motor for expansion / contraction 30 Drive shaft 36 Cylinder type shock absorber (configuration base)
44 Locking means 52 Telescopic transmission means

Claims (7)

A seat body that is foldable; between the seating position that supports the seat body and allows the seat body to form a seating form and to the retracted position along the ceiling surface of the car body, is arranged in the ceiling of the car body For a vehicle, comprising: a support arm that is pivoted about a pivotal fulcrum; and a locking means that can hold the support arm in a seated position fixedly to the vehicle body under the lock. In the ceiling storage sheet,
The support arm can be expanded and contracted in the axial direction, and a rotation motor serving as a drive source for rotating the support arm, and an expansion motor serving as a drive source for expanding and contracting the support arm have its power. It is arranged in the ceiling of the vehicle body so that it can be transmitted to and applied to the support arm, and is provided with a retracting switch for performing a storing command and a seating switch for performing a restoring command. Drive control of each motor is performed,
Further, the drive range of the support arm in the rotation motor is limited between the storage position and a lock release position with respect to the lock means defined closer to the storage position than the seating position. Between the unlocking position and the seating position, which is outside the driving range by the power of the motor, the supporting arm is biased toward the unlocking position under the biasing force from a predetermined biasing means,
At the time of restoration from the retracted position, the support arm in the contracted state is rotated to the unlocked position by the power of the rotation motor, and the expansion motor is started after the rotation motor is stopped. The extended support arm is moved to the seating position by the locking of the locking means accompanying the pushing against the urging force of the urging means from the unlocked position. While holding it fixed,
After unlocking the locking means at the seating position by a predetermined unlocking means, the support arm rotated and held at the unlocking position under the biasing force of the biasing means is used for the telescopic operation. The motor is contracted to a predetermined contracted state at the unlocked position by the power of the motor, and the support arm in the contracted state is rotated to the retracted position under the activation of the rotating motor after the expansion motor is stopped. A ceiling storage sheet for a vehicle characterized by being moved.   A striker fixed to one of the vehicle body and the support arm; and a catch unit provided on the other side of the vehicle body and the support arm, the striker being configured to be able to hold the striker fixedly 2. The vehicle ceiling storage according to claim 1, wherein the unlocking means for performing the unlocking operation on the locking means is provided on the same member as the catch unit as a manual release lever. Sheet. The locking means is a combination of a striker fixed to the vehicle body; and a catch unit that is configured to be able to hold the striker in a fixed manner and is provided on the support arm. The unlocking means for performing the releasing operation is formed from an operating means that is controlled by the control means,
2. The vehicular ceiling storage seat according to claim 1, wherein the retractable motor is started after a predetermined time has elapsed after operating the operating means by operating the storage switch of the control means when stored from the seating position.   An assist spring provided for the purpose of reducing the load load during the storage drive by the rotation motor is arranged so that an urging force toward the storage position can be applied to the support arm, and the urging force of the assist spring is 4. The vehicular ceiling storage seat according to claim 1, wherein the assist spring is also used as the urging means by acting in the same direction between the release position and the seating position.   A drive shaft driven by the power of the rotation motor is installed and supported between a pair of left and right base brackets provided in the ceiling of the vehicle body, and the support arm can be rotated integrally with the drive shaft. The vehicle ceiling storage seat according to any one of claims 1 to 4, wherein the drive shaft is used as a rotation fulcrum of the support arm by being connected. A drive shaft serving as a pivot fulcrum of the support arm is installed and supported between a pair of left and right support brackets, and the power of the pivot motor is transmitted to and applied to the drive shaft. It is possible to ensure the rotation of the support arm by the power of
The support arm is provided with a guide member having a combination of a base portion connected to and supported by the drive shaft; and a movable portion that is expanded and contracted with respect to the base portion as a constituent base. 6. The expansion and contraction of the support arm is performed under the power of the expansion / contraction motor by transmitting and applying the power of the expansion / contraction motor via a predetermined expansion / contraction transmission means. The ceiling storage sheet for vehicles as described in any one of. The guide member is composed of a cylinder type shock absorber that extends at least under the weight of the seat body,
The telescopic transmission means is
A rotating shaft that is rotationally driven by the power of the telescopic motor;
A wire take-up reel integrally provided on the rotating shaft;
A wire wound on the wire take-up reel;
An upper pulley rotatably provided on the drive shaft;
A rotatable lower pulley provided at the tip of the movable part of the shock absorber;
A combination of
The tip of the wire drawn out from the wire take-up reel is fixedly connected and supported to the base of the cylinder type shock absorber via the upper pulley and the lower pulley, and the wire is driven by the power of the telescopic motor. The ceiling storage sheet for a vehicle according to claim 6, wherein the expansion and contraction of the shock absorber can be controlled by winding and feeding the wire along with the rotation of the winding reel.

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