JP2006281911A - Driving motor arranging structure for movable floor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To further improve supporting rigidity of a driving motor for a movable floor device arranged near a compartment. <P>SOLUTION: This structure comprises a movable floor device having a movable floor panel 61 arranged at a foot locating area for locating feet of an occupant seated in a front seat and an elevation mechanism 62 elevating the movable floor panel 61, a driving motor 9 inputting a driving force to the elevation mechanism 62, a floor panel 4 constituting a floor face of the compartment for arranging the movable floor device 6, and a torque box part 32 bent and constituting a closed section C1 together with the floor panel 4. The driving motor 9 is arranged at a position near the elevation mechanism 62, and mounted to the floor panel 4 under a condition that it comes into contact with a predetermined portion constituting the closed section C1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drive motor used in a movable floor device capable of changing the floor height of a foot placement area on which a foot of the occupant is placed according to the physique and body shape of the occupant seated on the seat of the automobile. The present invention relates to an arrangement structure.

  It is known that the driving posture of an occupant sitting on a car seat, particularly a driver sitting on a driver's seat, is closely related to the driving comfort and driving safety of the occupant. Such an occupant's driving posture can be achieved by seat position adjusting means for adjusting the front and rear position and height of the seat, and also by a movable floor device for adjusting the height of the movable floor portion that can be raised and lowered relative to the fixed floor portion. It is known to be adjustable. As such a movable floor device, the following has been conventionally proposed.

For example, Patent Literature 1 discloses a fixed floor portion and an operation foot portion mounting on which the foot portion of an occupant operating the pedal is placed on the fixed floor portion and below a pedal such as a brake pedal. A movable floor portion disposed in the placement area, an elevating mechanism that moves the movable floor portion up and down relative to the fixed floor portion, and a recessed portion formed in the fixed floor portion. There has been proposed a movable floor device including a driving motor for inputting a driving force.
Japanese Utility Model Publication No. 63-69655

  Here, in this type of movable floor device, it is preferable from the viewpoint of driving force transmission efficiency that the driving motor is provided at a position close to the lifting mechanism to which the driving force is input. It is preferable that the driving force is directly transmitted from the driving motor to the lifting mechanism as in the apparatus described in (1). In addition, since the movable floor device is disposed corresponding to the seat disposed on the fixed floor portion, the position where the drive motor is disposed is limited if the drive force transmission efficiency is maintained to be good. Therefore, it is general that the drive motor is simply mounted in the recess formed in the fixed floor portion as in the device described in Patent Document 1.

  However, as described in Patent Document 1, when the drive motor is installed in a recess formed in the fixed floor portion, the movable floor portion carries the occupant's feet. It is considered that the drive motor is often driven and the reaction force of the torque acting on the drive motor is large, so that the support rigidity of the drive motor remains uneasy. That is, in the arrangement structure of the drive motor disclosed in Patent Document 1, there is a concern that the fixed floor portion may be deformed or damaged due to long-term use. Therefore, an improvement in support rigidity is desired for such a drive motor for a movable floor device. In addition, the drive motor is for driving a movable floor device disposed in the vehicle interior, and is often disposed in the vicinity of the vehicle interior regardless of the interior or exterior of the vehicle interior. If the support rigidity of the drive motor is low in the installation structure, there is a concern that the drive motor will be scattered into the vehicle compartment when the vehicle collides. Therefore, also in this respect, further improvement in support rigidity is desired for the drive motor for the movable floor device.

  In view of the above circumstances, the present invention relates to an improvement in the arrangement of a conventional drive motor for a movable floor device, and further improves the support rigidity of the drive motor for the movable floor device arranged in the vicinity of the passenger compartment. It is an object of the present invention to provide an improved drive motor arrangement for a movable floor device.

  According to the arrangement structure of the drive motor for the movable floor device according to the present invention, the movable floor portion disposed in the foot portion placement region on which the foot portion of the occupant seated on the front row seat is placed, and the movable floor A movable floor device having an elevating mechanism for moving the part up and down, a drive motor for inputting a driving force to the elevating mechanism, a panel member constituting an inner wall of a passenger compartment in which the movable floor device is disposed, A reinforcing member that is bent and forms a closed section together with the panel member, and the drive motor is disposed in the vicinity of the elevating mechanism and is in contact with a predetermined portion that forms the closed section. It is attached to at least one of the panel member and the reinforcing member.

  According to this invention, the drive motor is disposed in the vicinity of the elevating mechanism and is attached to at least one of the panel member constituting the inner wall of the passenger compartment and the reinforcing member constituting the closed section together with the panel member. Therefore, the relative positions of the drive motor and the lifting mechanism can be brought as close as possible, and thereby the transmission efficiency of the driving force from the drive motor to the lifting mechanism can be maintained in good condition. And since it is attached to at least one of the said panel member and a reinforcement member in the state contact | abutted to the predetermined part which comprises the said closed cross section, while being able to reinforce a panel member with the said closed cross section, a drive motor The support rigidity with respect to the vehicle body can be improved, and thereby, the scattering of the drive motor into the vehicle interior at the time of a vehicle collision or the like can be effectively prevented.

  Here, the movable floor device may be disposed in the rear part of the passenger compartment, for example, for rear row seats such as two-row, three-row seats, etc. (Claim 2).

  In this invention, it is preferable that the reinforcing member is joined to a surface of the panel member on the outer side of the passenger compartment (claim 3).

  If comprised in this way, a reinforcement member does not protrude in a vehicle interior, and the influence which it has on a vehicle interior space can be reduced.

  In this case, it is preferable to attach to the opposing wall part of the panel member which opposes the said reinforcement member.

  If comprised in this way, a drive motor can be attached to the panel member arrange | positioned rather than the reinforcement member arrange | positioned at the vehicle compartment outer side, and the transmission path of drive force is made as short as possible. Thus, the transmission efficiency of the driving force can be improved, and the rigidity of the opposing wall portion of the panel member is also enhanced by the reinforcing member, so that the supporting rigidity of the driving motor can be kept good.

  When the reinforcing member is joined to the outer surface of the panel member, the drive motor is housed in a space formed by at least a part of the reinforcing member and the panel member. (Claim 5).

  If comprised in this way, a drive motor can be arrange | positioned with respect to the vehicle body in the state which suppressed the protrusion amount to the vehicle interior side, for example, even when arrange | positioning a drive motor under the movable floor part, Interference can be prevented and the layout of the drive motor can be improved.

  In this case, the reinforcing member is formed corresponding to the size of the drive motor, and the drive motor is disposed in a state of being housed in a space constituted by the reinforcing member and the panel member. (Claim 6).

  If comprised in this way, the protrusion amount to the vehicle interior side of a drive motor can be eliminated, and this can prevent interference with a movable floor part reliably, and can improve appearance.

  Further, when the drive motor is disposed in the reinforcing member, the position of the reinforcing member is not particularly limited, but is preferably disposed below the movable floor device. (Claim 7).

  If comprised in this way, a drive motor can be arrange | positioned in the vicinity of a movable floor apparatus, while being able to improve the transmission efficiency of a driving force, the space between a movable floor part and a floor panel is made effective. A drive motor can be provided by using it.

  In this invention, the reinforcing member may be joined to a surface of the panel member on the vehicle interior side (claim 8).

  In this case, the drive motor is attached only to the reinforcing member (Claim 9), or when the drive motor is disposed in contact with both the reinforcing member and the panel member, these reinforcing members And a panel member (claim 10).

  In other words, when the drive motor is attached only to the reinforcing member, there is no need to drill a bolt insertion hole or the like in the panel member, which is advantageous in terms of hermeticity, and the drive motor has both the reinforcing member and the panel member. It is advantageous in that the arrangement is improved when it is placed in contact with the surface, and it can be firmly fixed in this state.

  In this case, a reinforcing member for the panel member may be newly provided, but it is preferable to use an existing reinforcing member. For example, the panel member is a dash panel that partitions the vehicle compartment and the engine room, and It is preferable that the reinforcing member is a dash cross member extending in the vehicle width direction at an intermediate portion in the height direction of the dash panel.

  If comprised in this way, an existing member can be utilized effectively and a drive motor can be efficiently arrange | positioned with high support rigidity.

  Here, in general, the shape and closed cross-sectional area of the dash cross member are determined from the viewpoint of reinforcing the dash panel. Generally, the reinforcing function of the dash cross member with respect to the dash panel can be improved by taking into account the dimensions of the drive motor in the direction perpendicular to the axial direction in addition to the above elements. In addition, the drive motor can be arranged by effectively utilizing the step of the dash cross member with respect to the dash panel.

  That is, the reinforcing member is formed so as to form the closed section by projecting toward the vehicle interior with respect to the panel member, and the projecting amount thereof is in a direction orthogonal to the axial direction of the drive motor. It is preferable that it is set corresponding to the dimensions (claim 12).

  If comprised in this way, a drive motor can be efficiently arrange | positioned effectively using the level | step difference which arises by providing a dash cross member, further improving the support rigidity of a drive motor.

  In the present invention, the panel member and the reinforcing member are not particularly limited. For example, the panel member is a vehicle front-rear direction at a substantially central portion in the vehicle width direction of the floor panel constituting the vehicle floor. And the reinforcing member is a tunnel reinforcing member that reinforces the tunnel portion (claim 13).

  If comprised in this way, since the rigidity of tunnel part itself is also high, the support rigidity with respect to the vehicle body of the said drive motor can be improved further.

  In this case, the tunnel portion is formed so that the front portion thereof is inclined upward, and an air conditioner unit for air-conditioning the vehicle interior is disposed above the inclined portion, and between the air conditioner unit and the tunnel portion. It is preferable that the drive motor is disposed (claim 14).

  If comprised in this way, while being able to arrange | position a drive motor effectively using the space below an air-conditioner unit, a drive motor can be concealed and appearance can be improved. Moreover, if the tunnel portion is deformed upward due to a vehicle collision or the like, the drive motor can be sandwiched between the tunnel portion and the air conditioner unit, and the scattering of the drive motor at the time of a vehicle collision or the like can be more reliably prevented. Can do.

  In the present invention, it is preferable that the drive motor and the elevating mechanism are connected by a drive force transmission cable for transmitting a drive force.

  If comprised in this way, irrespective of the arrangement direction of a drive motor, a drive force can be transmitted with respect to the raising / lowering mechanism from the said drive motor, and the layout property of a drive motor can be improved.

  According to the drive motor arrangement structure for the movable floor device according to the present invention, the relative positions of the drive motor and the lifting mechanism can be brought as close as possible, and thereby the driving force is transmitted from the driving motor to the lifting mechanism. The efficiency can be maintained as good, and the support rigidity of the drive motor with respect to the vehicle body can be improved by attaching the drive motor to the highly rigid member, so that the drive motor can withstand the reaction of the drive torque. Thus, there is an advantage that it can be supported firmly and the scattering of the drive motor into the vehicle compartment at the time of a vehicle collision or the like can be effectively prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
First, a description will be given of a first embodiment in which a drive motor for a movable floor device described later is housed in a torque box portion of a front side frame. FIG. 1 is a schematic configuration diagram of a front vehicle body structure to which the drive motor arrangement structure of the present invention is applied, and FIG. 2 is a bottom view showing only one side of the front vehicle body structure from the center in the vehicle width direction. Note that the front body structure is substantially formed on the left and right sides.

  This front body structure is joined to a pair of left and right front side frames 3 extending in the longitudinal direction of the vehicle body, a floor panel 4 joined to the pair of front side frames 3, and both edges of the floor panel 4 in the vehicle width direction. And a side sill 5 extending in the longitudinal direction of the vehicle body, and the movable floor panel 61 is placed on the floor panel 4 in an area on the floor panel 4 where an occupant's foot seated on a front row seat (not shown) is placed. A movable floor device 6 that moves up and down is provided.

  The front side frame 3 has a kick-up portion 3a inclined rearward and downward at an intermediate portion, and is formed so that the relative heights of the front portion and the rear portion are different. A floor panel 4 is joined to the rear part of the front side frame 3 and the kick-up part 3a. The floor panel 4 constitutes a floor surface of the passenger compartment, and a tunnel portion 41 is formed at the center in the vehicle width direction so as to be bent upward and extend in the front-rear direction. The tunnel portion 41 is elongated in the longitudinal direction of the vehicle body, the outside of the tunnel portion 41 is covered with a center console (not shown), and various wire harnesses and ducts are formed in the space between the center console and the tunnel portion 41. Etc. are arranged. A dash panel 7 that stands up and down in the vertical direction and partitions the engine room and the vehicle compartment is connected to the front edge of the floor panel 4.

  A dash cross member 11 extending in the vehicle width direction is disposed in the middle of the dash panel 7 in the height direction. As shown in FIG. 1, the dash cross member 11 is formed in a hat shape in cross section, and is joined to the side surface of the dash panel 7 with the opening facing the dash panel 7 side. Thereby, the dash cross member 11 forms a closed cross section extending in the vehicle width direction together with the dash panel 7, thereby reinforcing the dash panel 7.

  A wheel housing 8 is provided outside the front side frame 3 at the front portion in the vehicle width direction. A front end portion of the side sill 5 is disposed behind the wheel housing 8. Further, a front pillar 12 is joined to the side sill 5 at the front end portion in the longitudinal direction, and a center pillar 13 is joined to the middle portion in the longitudinal direction.

  Specifically, the front side frame 3 is divided into a plurality of members (three members in the present embodiment) along the longitudinal direction of the vehicle body. That is, the front side frame 3 is connected to the frame front part 31 extending from the front part of the vehicle body to the substantially central part of the kick-up part 3a and the rear end edge of the frame front part 31 and extends to the rear of the kick-up part 3a. A torque box portion 32 and a frame rear portion 33 connected to the rear end edge of the torque box portion 32 and connected to a rear side frame (not shown) are formed as a highly rigid member by integrally joining them. Yes.

  The frame front portion 31 is formed in a rectangular tube shape and forms a closed cross section that extends in the longitudinal direction of the vehicle body. The torque box portion 32 and the frame rear portion 33 are formed by bending by press working so as to have a cross-sectional inverted hat shape, and the lower surface of the floor panel 4, that is, the floor panel 4 is formed at the joint flange portions 32a and 33a protruding from the upper end opening edge. It is joined to the outside surface of the car. Thus, the torque box portion 32 and the frame rear portion 33 form a closed cross section that extends in the longitudinal direction of the vehicle body together with the floor panel 4.

  The torque box portion 32 is connected to the side sill 5 to improve the torsional rigidity of the vehicle body, and is configured as a member of the front side frame 3 in this embodiment. The torque box portion 32 is formed by bending by press working, and the overall shape thereof has a substantially trapezoidal shape when viewed from the bottom, and is closed to the closed section C1 by being joined to the floor panel 4 as described above. Is configured.

  The torque box portion 32 will be described more specifically. The torque box portion 32 extends in the longitudinal direction of the vehicle body and has a frame configuration in which the cross-sectional shape of each front and rear end portion is formed corresponding to the cross-sectional shape of each of the front and rear frame portions 31 and 33. A frame portion 32b, and a box portion 32c formed by extending a side wall and a bottom wall on the vehicle width direction outer side in the longitudinal direction intermediate portion of the frame constituting portion 32b to the side sill 5 located outward. Both end portions in the longitudinal direction are fitted on opposite ends of the frame front and rear portions 31 and 33 and joined by welding, and the outer end in the vehicle width direction of the box portion 32 c is joined to the side sill 5. As a result, as shown in FIG. 3, the closed cross-section C <b> 1 configured with the floor panel 4 extends outward in the vehicle width direction at the portion corresponding to the box portion 32 c and widened to the side sill 5 in the vehicle longitudinal direction. It is in a state.

  The torque box portion 32 is set to a depth capable of accommodating a drive motor 9 for inputting a driving force to the movable floor device 6 in the internal space. And in this internal space, the drive motor 9 is arrange | positioned in the state which set the axial direction along the vehicle width direction.

  In this embodiment, the drive motor 9 is a cylindrical stepping motor, and a movable floor panel 61 (to be described later) of the movable floor device 6 can be moved up and down by the driving force. The drive motor 9 is driven according to the output of an operation input unit (not shown) operated by a passenger, and a brake (not shown) that restricts the rotation of the output shaft 91 in a drive stopped state. ) Is built-in. A drive gear 92 having a diameter larger than that of the drive motor 9 is attached to the output shaft 91. The drive gear 92 is meshed with a transmission sector gear 62d of an elevating mechanism 62 (described later) of the movable floor device 6. Accordingly, the driving force of the driving motor 9 is input to the lifting mechanism 62 via the driving gear 92.

  As shown in FIG. 4, the drive motor 9 is attached to the lower surface of the floor panel 4 via a pair of brackets 10 arranged in parallel along the axial direction. That is, the drive motor 9 is attached to the upper side portion of the closed section C <b> 1 constituted by the torque box portion 32 and the floor panel 4 from the lower side. The bracket 10 has a U-shape along the peripheral surface of the drive motor 9 and is firmly joined to the lower surface of the floor panel 4 with a bolt at the upper end thereof. As shown in FIGS. 3 and 4, a slit 42 is provided in the portion of the floor panel 4 corresponding to the drive gear 92 of the drive motor 9, and the peripheral portion of the drive gear 92 protrudes toward the vehicle compartment through the slit 42. It is configured.

  A movable floor device 6 is disposed on the floor panel 4 above the drive gear 92. As shown in FIG. 4, the movable floor device 6 includes a movable floor panel 61 (movable floor) disposed on the upper surface of the floor panel 4 below pedals (not shown) such as an accelerator pedal and a brake pedal. And an elevating mechanism 62 that elevates and lowers the movable floor panel 61 with respect to the floor panel 4, and the movable floor is based on an input from an operation input unit (not shown) as described above. The panel 61 is configured to be set at a height position corresponding to the occupant's body shape and physique. In addition, about this movable floor apparatus 6, you may raise / lower the movable floor panel 61 in response to the back-and-forth slide movement of the sheet | seat which is not shown in figure.

  The movable floor panel 61 is a rectangular panel made of a hard synthetic resin plate, a steel plate, or the like, and in this embodiment, is composed of two front and rear panels 61a and 61b connected by a hinge 61c. The movable floor panel 61 is placed with its feet when an occupant sitting on a seat (not shown) operates pedals (not shown).

  The movable floor panel 61 has a front end edge of the front panel 61a pivotally supported by a hinge connecting portion 61d on a front rising inclined portion of the floor panel 4, and a lifting mechanism 62 swings the front panel 61a around the front end edge. Therefore, it can be moved up and down. The rear panel 61b is slid on the floor panel 4 along the longitudinal direction of the vehicle body while the relative angle with the front panel 61a changes as the front panel 61a moves up and down. It will be.

  As shown in FIG. 4, the elevating mechanism 62 is disposed on the floor panel 4 below the front panel 61 a and above the drive motor 9. The specific structure of the lifting mechanism 62 is not particularly limited as long as it can move the front panel 61a up and down. However, in the present embodiment, a predetermined portion of the front panel 61a (an intermediate portion in the illustrated example) is used. A mechanism is adopted that supports (slightly rearward) from below and moves up and down.

  That is, as shown in FIGS. 3 and 4, the elevating mechanism 62 includes a rotary shaft 62a that extends along the vehicle width direction below the front panel 61a and rotates forward and backward around a horizontal axis, and the rotary shaft 62a. A swing arm 62b that is attached to both ends and a center portion of the shaft and rotates integrally with the rotary shaft portion 62a, and a shaft bracket that is provided corresponding to each swing arm 62b and rotatably supports the rotary shaft portion 62a. 62c. Of the swing arm 62b, the central swing arm 62b disposed at the center in the longitudinal direction of the rotating shaft portion 62a is formed with a transmission sector gear 62d that meshes with the drive gear 92 of the drive motor 9 at its base end. Yes.

  In the movable floor device 6 configured as described above, when the operation input unit of the drive motor 9 is driven by an occupant, the output shaft 91 and the drive gear 92 of the drive motor 9 are driven to rotate forward and reverse. The driving force is transmitted from 92 to the elevating mechanism 62, specifically, the central swing arm 62b. When the central swing arm 62b rotates forward and backward, the rotary shaft 62a and the other swing arm 62b are also driven forward and reverse, thereby moving the front panel 61a contacting the tip of each swing arm 62b up and down. And the movable floor panel 61 is moved up and down.

  The drive motor 9 for inputting a driving force to the lifting mechanism 62 is provided directly below the lifting mechanism 62, and a driving force is directly input to the transmission sector gear 62d of the lifting mechanism 62 via the driving gear 92. And the elevating mechanism 62 are arranged close to each other, whereby the transmission efficiency of the driving force from the drive motor 9 to the elevating mechanism 62 can be improved.

  Moreover, the drive motor 9 is housed in the torque box portion 32 on the lower surface of the floor panel 4 of the floor panel 4 constituting the floor surface of the passenger compartment and the torque box portion 32 constituting the closed section C1 together with the floor panel 4. Thus, the rigidity of the support of the drive motor 9 with respect to the vehicle body can be improved. In other words, the predetermined portion of the floor panel 4 to which the drive motor 9 is joined is reinforced by the torque box portion 32 of the front side frame 3, so that the rigidity is enhanced. Compared to the conventional structure attached to the housing, it can be dramatically improved.

  Further, according to the arrangement structure of the drive motor 9, the front side frame 3 is shared with the torque box (a member for improving the torsional rigidity of the vehicle body), so that the drive motor 9 is disposed in the front side frame 3. An accommodation space, that is, an internal space formed by the torque box portion 32 is formed, and the drive motor 9 is accommodated in the internal space. Therefore, the drive motor 9 can be accommodated by creating an accommodation space with a simple configuration. . Therefore, the drive motor 9 can be accommodated by effectively utilizing the dead space below the floor panel 4, and the appearance can be improved without the drive motor 9 being exposed in the vehicle interior. Furthermore, if the drive motor 9 is housed in the torque box portion 32 in this way, the drive motor 9 can be placed close to the lifting mechanism 62 and the drive force can be directly input, and the movable floor panel can be directly input. As the 61 moves up and down, it can be disposed in a state where interference with the panel 61 is reliably prevented.

  In the first embodiment, instead of the configuration in which the drive motor 9 is joined to the lower surface of the floor panel 4, a configuration in which the drive motor 9 is joined to the bottom wall or the peripheral wall of the torque box portion 32 is adopted. It may be a thing.

  Moreover, not only the structure accommodated in the torque box part 32 but the thing joined to the upper surface of the floor panel 4 reinforced by this torque box part 32 may be used. In this case, if the corresponding portion of the floor panel 4 is recessed, and the drive motor 9 is joined to the recessed portion, it is reinforced by the torque box portion 32 while preventing interference with the movable floor panel. The part can be supported with high rigidity.

(Second Embodiment)
Next, a second embodiment in which the drive motor for the movable floor device is attached to the upper surface of the tunnel portion 41 of the floor panel 4 will be described. FIG. 5 is a schematic configuration diagram of a front vehicle body structure to which the drive motor arrangement structure of the second embodiment is applied, and FIG. 6 is a bottom view of the front vehicle body structure.

  The drive motor arrangement structure of the second embodiment is different not only in the arrangement position of the drive motor, but also in the configuration of the front side frame, the drive force transmission structure, etc., and this point will be mainly described. . In addition, about the structure similar to 1st Embodiment in 2nd Embodiment, a code | symbol is attached | subjected in a figure and the description is abbreviate | omitted.

  Unlike the first embodiment, the front side frame 103 of the second embodiment has a cross-section reverse hat shape that extends in the front-rear direction of the vehicle body between the frame front portion 131 and the frame rear portion 133 instead of the torque box portion 32. The intermediate frame portion 132 is provided. The floor panel 4 is joined on each of the frame parts 131 to 133. A predetermined gap is provided above the tunnel part 41 of the floor panel 4 with respect to the upper surface of the tunnel part 41, and the air conditioner unit 112 is provided. It is arranged.

  The air conditioner unit 112 is joined to the rear surface of the dash panel 7 by bolts inserted from the engine room side. The air conditioner unit 112 is formed so that its width is slightly wider than the width of the tunnel portion 41, and its rear end edge is located behind the inclined portion 41 a at the front end portion of the tunnel portion 41 in the attached state as shown in FIG. 5. It has become.

  The inclined portion 41a of the tunnel portion 41 is formed by inclining the front end portion of the tunnel portion 41 forward upward along the kick-up portion 3a. The tunnel portion 41 is provided with a tunnel reinforcing member 114 extending from the lower end portion of the inclined portion 41a to above the center cross member 113.

  As shown in FIG. 7, the tunnel reinforcing member 114 has an M-shape with a cross section perpendicular to the longitudinal direction opening downward, and the upper portion of the tunnel portion 41 is externally fitted to the lower end opening to thereby form a tunnel portion. 41 is attached. That is, the tunnel reinforcing member 114 has an upper surface wall 114a and side wall portions 114b that hang downward from both ends in the vehicle width direction of the upper surface wall 114a, and spot welding is performed on the side wall of the tunnel portion 41 at the lower end portion of the side wall portion 114b. It is joined. The tunnel reinforcing member 114 is provided with a reinforcing groove 114c extending in the vehicle body front-rear direction at the center portion in the width direction of the upper surface wall 114a, and is joined to the upper surface wall of the tunnel portion 41 at the bottom surface of the reinforcing groove 114c. A gap is provided between the upper surface wall of the tunnel portion 41 and the upper surface wall 114a of the tunnel reinforcing member 114 and on both sides of the reinforcing groove portion 114c. The gap is configured as a closed cross section. That is, the tunnel reinforcing member 114 forms a closed cross section C2 that extends in the longitudinal direction of the vehicle body together with the tunnel portion 41, thereby improving the rigidity of the upper portion of the tunnel portion 41.

  As shown in FIG. 8, the upper surface wall 114a of the tunnel reinforcing member 114 is also formed so as to incline forward in accordance with the inclined portion 41a of the tunnel portion 41 at the front end portion. A driving motor 9 is disposed on the inclined boundary portion 114d on the upper surface wall of the tunnel reinforcing member 114 with its axial direction along the boundary line. The inclined boundary portion 114 d is located on the side of the movable floor device 6, specifically on the side of the elevating mechanism 62. Therefore, the drive motor 9 is disposed in the vicinity of the elevating mechanism 62. In addition, the inclined boundary portion 114 d is located below the air conditioner unit 112, and thus the drive motor 9 is disposed in a gap between the lower surface of the air conditioner unit 112 and the upper surface of the tunnel portion 41.

  The structure of the drive motor 9 itself is the same as that of the first embodiment. A power transmission cable 194 is connected to the output shaft 91 of the drive motor 9 via a coupling 193. The power transmission cable 194 is composed of a flexible rotary drive shaft portion, and is configured such that the rotary drive shaft portion is driven to rotate around an axis to transmit a rotational force to a transmission gear 116 described later. Yes.

  As shown in FIG. 7, the drive motor 9 is mounted on the upper wall 114 a of the tunnel reinforcing member 114 via a pair of brackets 10 arranged in parallel along the axial direction. That is, the drive motor 9 is mounted on the upper side portion of the closed cross section C <b> 2 constituted by the tunnel portion 41 and the tunnel reinforcing member 114 of the floor panel 4.

  As shown in FIG. 8, the bracket 10 has a U-shape along the peripheral surface of the drive motor 9. The front and rear attachment portions 10a and 10b of the bracket 10 are joined by inserting the front attachment portion 10a into an insertion port (not shown) of an insertion protrusion 114e formed on the tunnel reinforcing member 114, and the rear The side attachment portion 10b is firmly joined to the upper surface wall 114a of the tunnel reinforcing member 114 by a bolt. The front mounting portion 10a of the bracket 10 is joined at an inclined portion of the tunnel reinforcing member 114 as shown in FIG.

  The other end of the power transmission cable 194 is connected to a transmission gear 116 attached on the floor panel 4 via a bearing bracket 115. Therefore, the driving force of the drive motor 9 is input to the transmission gear 116 via the power transmission cable 194.

  The transmission gear 116 is configured to be able to mesh with a transmission sector gear 62 d formed on the central swing arm 62 b of the lifting mechanism 62, and configured to be able to input the rotational driving force from the drive motor 9 to the lifting mechanism 62. .

  In the movable floor device 6 configured as described above, when the operation input unit of the drive motor 9 is driven by an occupant, the output shaft 91, the power transmission cable 194, and the transmission gear 116 of the drive motor 9 are driven to rotate forward and backward. Then, a driving force is transmitted from the transmission gear 116 to the elevating mechanism 62, specifically, the central swing arm 62b. When the central swing arm 62b rotates forward and backward, the rotary shaft 62a and the other swing arm 62b are also driven forward and reverse, thereby moving the front panel 61a contacting the tip of each swing arm 62b up and down. And the movable floor panel 61 is moved up and down.

  The drive motor 9 for inputting a driving force to the lifting mechanism 62 is provided on the side of the lifting mechanism 62 and rotationally drives the transmission gear 116 via a relatively short power transmission cable 194. Since the driving force is input to the transmission sector gear 62d of 62, the relative positions of the driving motor 9 and the lifting mechanism 62 are arranged close to each other, thereby improving the transmission efficiency of the driving force from the driving motor 9 to the lifting mechanism 62. can do.

  Moreover, the drive motor 9 is mounted on the upper surface wall of the tunnel portion 41 in the floor panel 4 constituting the floor surface of the passenger compartment and on the upper surface wall 114a of the tunnel reinforcing member 114 that forms the closed section C2 together with the tunnel portion 41. Since it is joined, the support rigidity with respect to the vehicle body of the drive motor 9 can be improved. That is, the tunnel reinforcing member 114 to which the drive motor 9 is joined has a closed cross section C2 and is increased in rigidity by being joined to the tunnel portion 41. Therefore, the support rigidity with respect to the drive motor 9 is simply recessed. Compared to the conventional structure attached to the housing, it can be dramatically improved. In addition, it is not necessary to provide a bolt hole or the like in the tunnel portion 41, which is advantageous in terms of soundproofing and waterproofing.

  Further, according to the arrangement structure of the drive motor 9, since it is arranged in the gap between the lower surface of the air conditioner unit 112 and the upper surface of the tunnel portion 41, the drive motor 9 is arranged using the dead space effectively. In addition, the air conditioner unit 112 can conceal the drive motor 9, thereby improving the appearance.

  Furthermore, since the front end portion of the tunnel portion 41 is inclined upward and disposed in a gap between the lower surface of the air conditioner unit 112 and the upper surface of the tunnel portion 41, the tunnel portion is When 41 is deformed, there are many cases that are bent upward, and when the tunnel portion 41 is bent upward as described above, the drive motor 9 is sandwiched between the air conditioner unit 112 and the tunnel portion 41. The scattering of the drive motor 9 can be effectively prevented.

  In the second embodiment, the other end of the power transmission cable 194 is connected to the transmission gear 116 so that the driving force of the power transmission cable 194 is directly input to the transmission gear 116. However, for example, a worm may be provided at the other end of the power transmission cable 194 so that a transmission gear as a worm wheel is rotationally driven. In this case, the reverse driving force input to the movable floor panel 61 can be supported by the worm gear, and the electromagnetic brake in the drive motor can be omitted.

  The tunnel reinforcing member 114 is provided with a reinforcing groove 114c. However, the reinforcing groove 114c is not provided, and a pair of left and right tunnel reinforcing members are provided so as to form a closed cross section on the left and right of the tunnel portion 41. You may comprise so that it may provide. In this case, the drive motor 9 is disposed in the gap between the pair of left and right tunnel reinforcing members in a state of being in contact with both the tunnel reinforcing member and the upper surface wall 114a of the tunnel portion 41. In this state, the tunnel reinforcing member It may be attached to at least one of the member and the top wall 114a.

(Third embodiment)
Next, a description will be given of a third embodiment in which a drive motor for a movable floor device is disposed on a dash cross member. FIG. 9 is a schematic configuration diagram of a front vehicle body structure to which the drive motor arrangement structure of the third embodiment is applied, and FIG. 10 is a bottom view of the front vehicle body structure.

  The drive motor arrangement structure of the third embodiment is different from the second embodiment with respect to the arrangement position of the drive motor and the like, and this point will be mainly described. In addition, about the structure similar to 1st, 2nd embodiment in 3rd Embodiment, a code | symbol is attached | subjected in a figure and the description is abbreviate | omitted.

  A dash cross member 211 is disposed along the vehicle width direction on the rear wall of the dash panel 7 constituting the front surface of the vehicle compartment of the front vehicle body, as in the first embodiment. Unlike the first embodiment, the dash cross member 211 has a protruding amount set according to the diameter of the drive motor 9.

  That is, both ends of the dash cross member 211 are spot welded to the vehicle width direction end of the dash panel 7 and are spot welded to the dash panel 7 at predetermined positions in the longitudinal direction. Specifically, as shown in FIG. 12, the dash cross member 211 is formed in a substantially hat shape in sectional view that opens forward, and includes a rear wall 211 a that extends in a substantially vertical direction with respect to the vehicle body, and a rear wall. The upper and lower side walls 211b, c extending forward from the upper and lower end edges of the 211a, and the joining flange portions 211d, e extending from the front end edges of the upper and lower side walls 211b, c along the dash panel 7 upward and downward outward. The joint flange portions 211d and e are joined to the dash panel 7 by spot welding to the dash panel 7 as described above, whereby the dash cross member 211 has a closed cross section C3 extending in the vehicle width direction together with the dash panel 7. Thus, the rigidity of the dash panel 7 is improved.

  The protruding amount of the dash cross member 211 with respect to the dash panel 7 is determined by the extending lengths of the upper and lower side walls 211b, c. In the third embodiment, the length h of the upper surface wall 211b in the longitudinal direction of the vehicle body is the driving motor 9. It is designed to be longer than the diameter d. The upper surface wall 211b of the dash cross member 211 is formed so as to extend in a substantially horizontal direction with respect to the vehicle body, thereby making it easy to place the drive motor 9 thereon. Further, the lower surface wall 211c of the dash cross member 211 is disposed so as to incline forward and downward so that the drive motor 9 can be stably placed.

  As shown in FIGS. 10 and 11, the drive motor 9 is on the upper surface wall 211 b of the dash cross member 211 and in front of the movable floor device 6, more specifically, on the central half of the movable floor panel 61. It is arranged in the front. The structure of the drive motor 9 itself and the structure for transmitting the driving force from the drive motor 9 to the transmission gear 194 are the same as those in the first and second embodiments.

  As shown in FIG. 12, the drive motor 9 is mounted on the upper surface wall 211b of the dash cross member 211 via a pair of brackets 10 arranged in parallel along the axial direction. That is, the drive motor 9 is mounted on the upper side portion of the closed section C3 constituted by the dash cross member 211 and the dash panel 7 constituting the front of the passenger compartment.

  The bracket 10 is formed along the peripheral surface of the drive motor 9, and an upper end portion is firmly joined to the dash panel 7 by a bolt, and a lower end portion is attached to the upper portion of the rear wall 211 a of the dash cross member 211 by a bolt. It is firmly joined.

  The power transmission cable 194 having one end attached to the drive motor 9 via a coupling 193 is disposed on the upper surface wall 211b of the dash cross member 211 in front of the movable floor device 6, The length can be formed relatively short.

  In the movable floor device 6 configured as described above, when the operation input unit of the drive motor 9 is driven by an occupant, the output shaft 91, the power transmission cable 194, and the transmission gear 116 of the drive motor 9 are driven to rotate forward and backward. Then, a driving force is transmitted from the transmission gear 116 to the elevating mechanism 62, specifically, the central swing arm 62b. When the central swing arm 62b rotates forward and backward, the rotary shaft 62a and the other swing arm 62b are also driven forward and reverse, thereby moving the front panel 61a contacting the tip of each swing arm 62b up and down. And the movable floor panel 61 is moved up and down.

  The drive motor 9 for inputting a driving force to the elevating mechanism 62 is provided in front of the elevating mechanism 62 and rotationally drives the transmission gear 116 via a relatively short power transmission cable 194. From the transmission gear 116, the elevating mechanism 62 is driven. Since the driving force is input to the transmission sector gear 62d, the relative positions of the driving motor 9 and the lifting mechanism 62 are arranged close to each other, thereby improving the transmission efficiency of the driving force from the driving motor 9 to the lifting mechanism 62. be able to.

  Moreover, the drive motor 9 is fixed in a state where the drive motor 9 is placed on the dash panel 7 constituting the front surface of the passenger compartment and the upper surface wall 211b of the dash cross member 211 constituting the closed section C3 together with the dash panel 7. Therefore, the support rigidity of the drive motor 9 with respect to the vehicle body can be improved. That is, the dash cross member 211 to which the drive motor 9 is joined has a closed cross section C3 formed by joining to the dash panel 7 so that the rigidity is enhanced. Compared to the conventional structure attached to the housing, it can be dramatically improved.

  In the third embodiment, the dash cross member 211 is joined to the rear surface of the dash panel 7, that is, the surface on the passenger compartment side. The dash cross member is connected to the front surface of the dash panel 7, that is, the engine room side. It may be bonded to the surface. In this case, the drive motor 9 may be mounted and mounted on the engine room side using the upper surface wall of the dash cross member, or in a closed cross section composed of the dash cross member and the dash panel. It may be housed and attached. Thus, when it comprises so that it may accommodate in a closed cross section, an opening is provided in a dash panel and a power transmission cable will be introduce | transduced into a vehicle interior through this opening. Further, as in the second embodiment, the drive motor 9 may be attached only to the dash cross member 221. In this case, there is no need to provide a bolt hole in the dash panel 7, which is advantageous in terms of soundproofing and waterproofing.

  The drive motor arrangement structure for the movable floor apparatus described above is an embodiment of the structure according to the present invention, and the specific configuration of the apparatus can be changed as appropriate without departing from the spirit of the present invention. It is. Hereinafter, the modification is demonstrated.

  In each of the embodiments described above, the drive motor 9 is configured to be attached to the high-rigidity member using an existing high-rigidity member for improving the vehicle body strength of the reinforcing member. You may comprise so that the reinforcement member for attachment may be attached separately. However, by using an existing high-rigidity member as in each of the above embodiments, the configuration can be simplified and the manufacturing cost can be reduced.

1 is a schematic configuration diagram of a front vehicle body structure to which a drive motor arrangement structure according to a first embodiment is applied. It is a bottom view of the front body structure. It is the III-III sectional view taken on the line of FIG. It is an expanded sectional view showing the drive motor arrangement structure concerning a 1st embodiment. It is a schematic block diagram of the front vehicle body structure to which the drive motor arrangement | positioning structure which concerns on 2nd Embodiment is applied. It is a bottom view of the front body structure. It is the VII-VII sectional view taken on the line of FIG. It is an expanded sectional view showing the drive motor arrangement structure concerning a 2nd embodiment. It is a schematic block diagram of the front vehicle body structure to which the drive motor arrangement structure which concerns on 3rd Embodiment is applied. It is a bottom view of the front body structure. It is the XI-XI sectional view taken on the line of FIG. It is an expanded sectional view showing the drive motor arrangement structure concerning a 3rd embodiment.

Explanation of symbols

C1 closed cross section C2 closed cross section C3 closed cross section 3 front side frame 4 floor panel 6 movable floor device 7 dash panel 9 drive motor 10 bracket 11 dash cross member 32 torque box section 41 tunnel section 61 movable floor panel 62 lifting mechanism 112 air conditioner unit 211 Dash cross member

Claims (15)

A movable floor device having a movable floor portion disposed in a foot portion placement region on which a foot portion of an occupant seated on the front row seat is placed, a lifting mechanism for moving the movable floor portion up and down, and the lifting mechanism A driving motor that inputs a driving force, a panel member that constitutes an inner wall of a passenger compartment in which the movable floor device is disposed, and a reinforcing member that is bent and forms a closed section together with the panel member,
The drive motor is disposed in the vicinity of the elevating mechanism, and is attached to at least one of the panel member and the reinforcing member in contact with a predetermined portion constituting the closed cross section. The drive motor arrangement structure for the movable floor apparatus characterized by the above.   2. The drive motor disposition structure for a movable floor device according to claim 1, wherein the movable floor device is disposed in a front part of the passenger compartment.   3. The drive motor arrangement structure for a movable floor device according to claim 1, wherein the reinforcing member is joined to a surface of the panel member on the outer side of the passenger compartment.   4. The drive motor arrangement structure for a movable floor device according to claim 3, wherein the drive motor is attached to a facing wall portion of the panel member facing the reinforcing member.   The movable motor according to claim 3 or 4, wherein at least a part of the drive motor is disposed in a state of being housed in a space constituted by the reinforcing member and the panel member. Drive motor arrangement structure for floor equipment.   The reinforcing member is formed corresponding to the size of the drive motor, and the drive motor is disposed in a state of being housed in a space constituted by the reinforcing member and the panel member. The drive motor arrangement structure for the movable floor device according to claim 5.   7. The drive motor disposition structure for a movable floor device according to claim 5, wherein the reinforcing member is disposed below the movable floor device.   3. The drive motor arrangement structure for a movable floor device according to claim 1, wherein the reinforcing member is joined to a surface of the panel member on the vehicle interior side.   9. The drive motor arrangement structure for a movable floor device according to claim 8, wherein the drive motor is attached only to the reinforcing member.   9. The movable floor apparatus according to claim 8, wherein the drive motor is disposed in contact with both the reinforcing member and the panel member and is attached to both the reinforcing member and the panel member. Drive motor arrangement structure.   9. The panel member according to claim 8, wherein the panel member is a dash panel that partitions the vehicle compartment and the engine room, and the reinforcing member is a dash cross member that extends in the vehicle width direction at an intermediate portion in the height direction of the dash panel. The drive motor arrangement structure for the movable floor device according to claim 10.   The reinforcing member is formed so as to form the closed section by projecting toward the vehicle interior with respect to the panel member, and the projecting amount thereof is dimensioned in a direction perpendicular to the axial direction of the drive motor. The drive motor arrangement structure for a movable floor device according to any one of claims 8 to 11, wherein the drive motor arrangement structure is set correspondingly.   The panel member is a top wall portion of a tunnel portion extending in the vehicle front-rear direction at a substantially central portion in the vehicle width direction of the floor panel constituting the vehicle floor, and the reinforcing member reinforces the tunnel portion. The drive motor arrangement structure for a movable floor device according to any one of claims 1, 2, and 8 to 10, wherein:   The tunnel portion is formed with a front portion inclined to rise forward, and an air conditioner unit for air-conditioning a vehicle interior is disposed above the inclined portion, and the drive motor is disposed between the air conditioner unit and the tunnel portion. The drive motor arrangement structure for the movable floor device according to claim 13, wherein the arrangement is arranged.   The drive motor for a movable floor device according to any one of claims 1 to 14, wherein the drive motor and the elevating mechanism are connected by a drive force transmission cable for transmitting a drive force. Arrangement structure.

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