JP5551566B2 - Handrail for vehicle - Google Patents

Description

  The present invention relates to a handrail for a vehicle that appears and disappears from an entrance according to opening and closing of a vehicle door.

Conventionally, as disclosed in Patent Document 1, a substantially U-shaped assist grip is installed on a pillar, which is a constituent member of a rear entrance / exit in the vehicle or the like.
Since this assist grip is installed at the upper part of the inner side surface of the pillar, it has a problem that it is difficult for a child, an elderly person, or a handicapped person to get in when getting on and off.

  In order to solve the above problem, as disclosed in Patent Document 2, a hand is attached to a rotating shaft that is supported on a case fixed to the vehicle body side via a handrail mounting bar and disposed on the vehicle interior side. The upper part of the railing bar is connected so that the handrailing bar can be rotated between a storage position where all the railing bars are located indoors and a deployed position where the lower part of the handrailing bar extends from the entrance / exit to the outside of the room. A vehicular handrail has been developed, in which a plunger protruding from the shaft is fitted into a position setting hole provided on the peripheral surface of the rotating shaft, so that the rotating shaft is held at a rotating position corresponding to the retracted position and the deployed position. It was.

JP 2002-114072 A JP 2009-227205 A

However, the handrail for a vehicle having the above-described configuration is installed between a partition separating the driver's seat and the passenger's seat and the rear space thereof, and the left and right front pillars in the vicinity of the front pillar which is one component of the entrance / exit. It is installed on a handrail mounting bar provided between the horizontal bars, and the vehicle internal structure is limited.
Even if a vehicle handrail case is installed on the front pillar in a vehicle that is not equipped with a partition wall or a horizontal bar, the case will protrude from the inner side surface of the pillar, which will obstruct the reclining of the passenger seat. Has drawbacks.

  Further, the swinging operation of the handrail bar is performed by pulling the operation string hanging from the lower part of the case downward to rotate it to an intermediate position between the retracted position and the deployed position, and manually moving from the intermediate position to the retracted or deployed position. There is a problem that it must be rotated and its operation is very troublesome.

  Therefore, according to the present invention, the handrail for a vehicle that automatically swings the handrail bar and flattenes the drive box for swinging the handrail bar so that it does not get in the way even if it is attached to the pillar. The purpose is to provide.

In view of the above problems, a handrail for a vehicle according to the present invention includes a drive box attached to an upper part of an inner side surface of a pillar that constitutes a passenger door, and a rotating shaft that is horizontally supported by the drive box in parallel with the inner side surface of the pillar. It is suspended along the side edge of the pillar's entrance / exit side in the car when the entrance / exit is closed, and is pivotably mounted so that the lower end protrudes obliquely downward from the entrance / exit toward the outside of the car when the entrance / exit is opened. And the drive box has a drive gear having a drive shaft in the thickness direction of the pillar orthogonal to the rotation shaft, a rotation gear attached to the rotation shaft, the rotation gear and the drive An L-shaped rack integrally formed at right angles with a rack that meshes with each of the gears is built in and formed flat in the thickness direction of the pillar.
The handrail bar is fixed to the tip of a rotatable support shaft with the upper part protruding horizontally from the side of the drive box to the entrance / exit, and the lower part and the base end are fixed to the rotating shaft. The tip of the crank is pivotally connected via a linkage, and the crank that extends in the tilted state of the handrail rod and the linkage pivot are positioned beyond the dead center on the orbit of the pivot. In addition to the setting, a tilt maintaining stopper is provided to suppress the rotation of the crank at this time.
Further, a receiving piece whose swinging motion is synchronized with the handrail rod is disposed on the track of the projecting piece provided on the crank front end side, and the receiving piece is suspended from the state immediately before the handrail rod is suspended from the projecting piece. A drooping maintenance stopper is provided that prevents the rotation of the protruding piece that is pressed to the end and continuously presses the receiving piece in the hanging state of the handrail bar.
The handrail bar is more preferably set so as to swing in conjunction with the opening / closing operation of the door that opens / closes the entrance / exit.

In short, the vehicular handrail of the present invention includes the drive box and the handrail bar as described above, and the drive box has a drive shaft in the thickness direction of the pillar perpendicular to the rotation axis parallel to the inner side surface of the pillar. Since a built-in gear, a rotating gear pivotally attached to the rotating shaft, and an L-shaped rack integrally formed at right angles with a rack that meshes with each of the rotating gear and the driving gear, the L-shaped rack is formed by the operation of the driving gear. Since the rotating shaft can be rotated forward and backward via the rack and the rotating gear, the swing of the handrail bar can be automated, and the conventional hand gap can be omitted.
Moreover, since the drive shaft is oriented in the thickness direction of the pillar, the drive gear attached to the pillar can be arranged facing the inner side surface of the pillar, and this can flatten the drive box even if the drive gear has a large diameter. There is no hindrance, and the rotation of the drive gear is long in the length direction of the pillar, and the shaft is orthogonal to the drive gear through an L-shaped rack that does not hinder flattening of the drive box. It can be transmitted to a rotating gear, and the handrail bar can be swung, so that the drive box can be formed flat in the thickness direction of the pillar, so that even if the drive box is attached to the pillar, the reclining of the seat in front of the pillar And when moving backward, the seat can be operated without hindrance without interfering with the seat.

  The handrail bar is fixed to the tip of a rotatable support shaft whose upper part is horizontally projected from the side of the drive box to the entrance / exit side, and the lower part of the fixed part and the crank with the base end fixed to the rotating shaft The tip of the shaft is pivotally connected via a linkage, and the pivot of the handrail rod is extended by the rotation of the crank in the tilted state, and the pivot of the linkage is positioned beyond the dead center on the orbit of the pivot. Because it is set to do so, the crank that extends from the bent state is provided with a boosting action, and the crank in such a state is prevented from further rotation in the same direction by the tilt maintenance stopper, The handrail rod supported by the crank and the linkage can be firmly held in the tilted state, and can be used as a safe support for walking along the handrail rod when getting on and off the vehicle, and the meshing of the rotating gear, L-shaped rack and drive gear Excessive load on the part Take not, it is possible to reduce these damage or failure.

  A receiving piece whose swinging motion is synchronized with the handrail rod is arranged on the track of the protruding piece provided on the crank front end side, and the receiving piece extends from just before the hanging state of the handrail rod to the hanging state on the protruding piece. The handrail bar that swings from the tilted state to the suspended state is bent from the position immediately before the suspended state to the projecting piece of the crank. It is surely displaced to a fixed position that reaches the suspended state by the pressed receiving piece, and in the hanging state of the handrail bar, it is more than that of the projecting piece (crank) that continuously presses the receiving piece by the hanging maintenance stopper. Since the rotation in the same direction is restrained, the hanging state of the handrail bar can be firmly held without rattling or wobbling by the bending crank and the linkage, and this makes it possible to It can serve as a similar Naru grip and grip.

  The handrail bar is set so that it swings in conjunction with the opening / closing operation of the door that opens and closes the entrance / exit, so when the door is opened by the door, the handrail bar has its lower end diagonally downward from the entrance / exit to the outside of the vehicle. It can swing automatically so that it protrudes and tilts, and when the doorway is closed by a door, it can automatically swing so that the handrail bar in the tilted state is stored in a suspended state in the vehicle. Its practical effect is great, such as no need for troublesome manual operation.

It is a front view which shows the attachment state of the handrail for vehicles seen from the vehicle interior. It is a left view of FIG. It is a partially omitted left side view of a handrail for a vehicle in a hanging state of a handrail bar. FIG. It is a partially omitted left side view of the handrail for a vehicle in a tilted state of the handrail bar. FIG. It is a principal part right side view inside a drive box which shows each state of the drooping and tilting maintenance stopper in the drooping and tilting state of the handrail bar.

An embodiment of the present invention will be described below with reference to the drawings.
A handrail for a vehicle according to the present invention is a vehicle such as a passenger car equipped with a slide door (not shown). Also referred to as an inner surface P.) A drive box 1 attached to the upper portion and a rotary shaft 2 that is horizontally supported in parallel to the pillar inner surface P in the drive box 1 and is closed by a slide door. Sometimes it hangs down along the side edge (left side edge Pa in the example) of the pillar P with the in-vehicle ID, and when the entrance G is opened by the sliding door, the lower end protrudes obliquely downward from the entrance G to the outside OD. It is mainly composed of a handrail bar 3 that is swingably attached so as to tilt.

The drive box 1 is vertically long along the length of the pillar P and is formed flat in the thickness direction T of the pillar P, and the left side 1a of the drive box 1 is stretched from the left edge Pa of the pillar P to the entrance / exit G side (left side). It is installed to put out.
Specifically, it comprises a base 4 fixed to the inner side surface P of the pillar and a cover 5 covering this, and the left side of the base 4 is formed so that only the upper part protrudes from the left side edge Pa of the pillar. In the drive box 1, an opening 6 communicating with the entrance / exit G is formed in the lower part of the left rear surface protruding from the left side edge Pa of the pillar.
A front seat belt S is already provided on the inner side P of the pillar on the right side (front seat side) of the drive box 1.

  In the drive box 1, an electric motor 7 having a driving shaft in the thickness direction T of the pillar P orthogonal to the rotating shaft 2 is fixed to the lower portion of the base 4 and can be rotated in the forward and reverse directions. Is a rotating gear 2a that is supported by a bearing supported by a base end side of a rotating shaft 2 inserted through a lower standing wall 4a of a base 4 that is erected along the left side edge Pa of the pillar. Is connected to a driving gear 7a attached to a driving shaft of the motor 7 through a series of transmission mechanisms 8 disposed on the base 4 above the motor 7.

  The transmission mechanism 8 built in the drive box 1 together with the motor 7 has the drive shaft 9 in the thickness direction T of the pillar P orthogonal to the rotation shaft 2 and the tooth portion only on the left half circumference side, like the driving gear 7a. And a pair of racks meshed with the rotating gear 2a and the driving gear 9a, respectively. An L-shaped rack 11 is formed by integrally forming 11a and 11b at a right angle.

The rack 11a is formed in the shape of a strip that is long in the vertical direction, provided with a tooth portion that meshes with the drive gear 9a on the right edge thereof, and has elongated holes 12 and 12a penetrating at predetermined intervals on the same axis. The long holes 12 and 12a are slidably mounted on pins 13 and 13a projecting vertically on the upper left side of the base 4 so as to convert the forward / reverse rotation of the drive gear 9a into a vertical reciprocating motion. doing.
The pins 13 and 13a protrude from the upper surface of the base 4 as much as the thickness of the rack 11a, and retaining rods 14 and 14a having a larger diameter than the long holes 12 and 12a are formed at the protruding ends.

  The rack 11b is composed of vertically long strips that are vertically erected on the front surface of the left side edge of the rack 11a so as to be adjacent to the right side of the lower vertical wall 4a of the base 4 and has a rotating gear on the long side edge facing the front surface. A tooth portion meshing with 2a is provided, and the above vertical reciprocating motion is converted into forward and reverse rotation of the rotating gear 2a.

The handrail bar 3 is fixed to the tip of a rotatable support shaft 15 whose upper part is horizontally projected from the upper left side 1a of the drive box 1 to the entrance / exit G side.
The support shaft 15 extends from the left side edge Pa of the pillar, and stands on the upper left standing wall 4b of the base 4 standing in parallel with the left side edge Pa, and on the upper right standing wall 4c of the base 4 standing in parallel on the right side of the left upper standing wall 4b. The bearing is supported by being inserted into the shaft.

Then, the handrail bar 3 is pivotally connected to the lower portion of the support shaft 15 from the fixed portion (upper portion) and the distal end of the crank 16 having the base end fixed to the rotating shaft 2 via the linkage 17. The crank 16 extending in the tilted state of the slider 3 and the pivot 18 of the linkage 17 are set so as to be located beyond the dead point X on the trajectory Q of the pivot 18 (see FIG. 5). A tilt maintaining stopper 19 for preventing the rotation of the crank 16 is provided.
The crank 16 and the linkage 17 are stored in a lower left space in the drive box 1 that communicates with the opening 6 in a bent state, and project outward from the opening 6 to the entrance / exit G in an expanded state. For this reason, an arc groove 21 is formed in the lower part of the left side wall 5a of the cover 5 along the trajectory of the pivot 20 so that the pivot 20 with the linkage 17 in the handrail rod 3 can be inserted and removed.

  Further, in the illustrated example, the handrail bar 3 is shown to be bent downwardly along the pillar P toward the inner side of the vehicle. However, the handrail bar 3 is not limited to such a shape. It may be.

  The tilt maintaining stopper 19 is disposed so as to be opposed to the base 4 on the front side of the support shaft 15 on the right side surface of the upper right wall 4c and the convex portion 22 projecting upward from the base end of the support shaft 15 protruding to the right side from the upper right wall 4c. The front plate 23 is made of a rubber plate adhered to the front plate 23, and the front side 22a of the convex portion 22 touches the front plate 24 in the tilted state of the handrail bar 3. It is made.

Further, in the drive box 1, the pivot shaft 20 and the support shaft 15 fixed to the handrail rod 3 can be inserted into and removed from the gap between the left upper wall 4 b and the linkage 17 and the left wall 5 a of the cover 5. In addition, a synchronization plate 25 is provided to synchronize the swinging motion with the handrail bar 3.
Then, on the right side of the front longitudinal side edge of the synchronization plate 25, a rectangular plate-shaped receiving piece 25a is provided in a protruding manner on the track of the protruding piece 16a provided on the tip end side of the crank 16, and the receiving piece 25a A drooping maintenance stopper that is pressed by 16a from just before the handrail rod 3 is suspended to a drooping state and prevents the rotation of the protrusion 16a that continuously presses the receiving piece 25a in the drooping state of the handrail rod 3. 26 is provided.

  The drooping maintenance stopper 26 has a back plate made of a rubber plate bonded to a back plate 27 that is projected on the same plane as the base 4 on the back side of the support shaft 15 on the right side surface of the convex portion 22 and the right upper wall 4c. The back side 22b of the convex portion 22 touches the back-side stop piece 28 in the above-described hanging state of the handrail bar 3.

In the vehicular handrail configured as described above, the handrail bar 3 is set to swing in conjunction with the opening / closing operation of the slide door.
That is, the motor 7 is operated when the sliding door is opened, and the handrail rod 3 is swung from the suspended state to the tilted state. When the slide door is closed, the motor 7 is operated and the tilted state is set. The handrail bar 3 is swung to a suspended state.

Further, in the L-shaped rack 11, a dog 11c for stopping the motor 7 protrudes from the upper end of the rack 11a, and the motor 7 in which the tips of the switch levers 29a and 30a are directed to the dog 11c on the left and right sides of the dog. The stop microswitches 29 and 30 are fixed to the upper part of the base 4.
The left microswitch 29 is configured such that the dog 11c located at the upper limit when the handrail rod 3 is suspended presses the switch lever 29a to stop the operation of the motor 7.
The right microswitch 30 is configured such that the dog 11c positioned at the lower limit when the handrail bar 3 is tilted presses the switch lever 30a to stop the operation of the motor 7.

Next, the operation of the handrail for a vehicle according to the present invention will be described in detail.
First, in the closed state of the sliding door, as shown in FIGS. 1 to 4 and 7, the L-shaped rack 11 is stopped at its upper limit position, and the rotating shaft 2 of the rotating gear 2a meshed with the rack 11b. The crank 16 with the base end fixed is upright and bent together with the linkage 17 in the drive box 1, and the projecting piece 16 a is synchronized with the handrail bar 3 through the synchronizing plate 25. In addition, the back side 22b of the projection 22 touches the back stop piece 28 to prevent the rotation of the support shaft 15, and the hanging state of the handrail bar 3 is firmly held without rattling. doing.

  As described above, the handrail rod 3 hanging along the left side edge Pa of the vehicle ID is used as a grip similar to the conventional assist grip.

When the sliding door in the closed state is opened, the motor 7 is operated to rotate the driving gear 7a clockwise, thereby causing the driving gear 9a and the driven gear 10 to decelerate and rotate counterclockwise. Falls.
Then, the rotating gear 2a rotates counterclockwise in FIG. 3, and the coaxial crank 16 is rotated in the same direction with the rotating shaft 2 to release the pressure on the receiving piece 25a by the protruding piece 16a. The crank 16 is extended together with the linkage 17 stored in a bent state in 1 so that the handrail bar 3 tilts with its lower end protruding obliquely downward from the entrance G to the vehicle outside OD with the support shaft 15 as a fulcrum. (See FIGS. 5 and 6).

When the L-shaped rack 11 reaches the lower limit position, the dog 11c at the upper end presses the switch lever 30a of the micro switch 30 and stops the motor 7.
At this time, the extended crank 16 and the pivot 18 of the linkage 17 are located beyond the dead center X on the trajectory Q of the pivot 18, so that the extended crank 16 and linkage 17 have a boosting action. The crank 16 in this state is moved by the tilt maintaining stopper 19 shown by a two-dot chain line in FIG. 7, that is, when the front side 22a of the convex portion 22 of the support shaft 15 touches the front stopper piece 24. Since the above-described rotation in the same direction is suppressed, the tilting state of the handrail bar 3 supported by the crank 16 and the linkage 17 is firmly held.

The handrail bar 3 in the tilted state is used as a safe support for walking while getting on and off the vehicle.
Further, when the motor 7 is stopped, the handrail bar 3 is maintained in the tilted state mainly by the crank 16 and the linkage 17 in the extended state and the tilt maintaining stopper 19. Is not overloaded.

Next, when the opened sliding door is closed, the motor 7 operates to rotate the driving gear 7a in the opposite direction to the above, and the L-shaped rack 11 is moved from the lower limit position via the driven gear 10 and the driving gear 9a. To rise.
Then, the rotating gear 2a rotates clockwise in FIG. 5, and the coaxial crank 16 is rotated in the same direction with the rotating shaft 2, whereby the crank 16 and the linkage 17 are bent, and the support shaft 15 is bent. As a fulcrum, the handrail rod 3 is swung into a state of hanging to the vehicle interior ID.

The crank 16 rotates while the protruding piece 16a presses the receiving piece 25a immediately before the handrail bar 3 is suspended.
The pressing of the receiving piece 25a by the projecting piece 16a is performed until the handrail rod 3 is arranged at a fixed position of the in-vehicle ID that reaches the suspended state. In this state, the projecting portion on the support shaft 15 is caused by the hanging maintenance stopper 26. When the back side 22b of 22 touches the back stop piece 28, rotation of the protruding piece 16a (crank 16) that continues to press the receiving piece 25a in the same direction is suppressed.
At the same time, since the L-shaped rack 11 reaches the upper limit position, the dog 11c at the upper end presses the switch lever 29a of the micro switch 29, the motor 7 is stopped, and the handrail bar 3 returns to the suspended state. .

In this embodiment, in a vehicle in which a slide door opens and closes a rear entrance that is adjacent to the front entrance of a front seat such as a driver seat or a passenger seat via a pillar, a hand is provided from the rear entrance. As shown in the figure, a vehicle handrail is installed on the front pillar that constitutes the rear entrance and exit so that the sliding bar appears and disappears. However, as disclosed in Patent Document 2, the rear pillar that constitutes the rear entrance and exit is also shown. It can be installed.
Further, the handrail for a vehicle according to the present invention is not limited to the entrance / exit where the sliding door opens and closes, but can also be applied to the entrance / exit where the swing door opens and closes, and the entrance / exit where the folding doors mainly installed on buses and the like open and close. It is.

1 Drive box
1a Side 2 Rotating shaft
2a Rotating gear 3 Handrail rod 9 Drive shaft
9a Drive gear
11 L-shaped rack
11a rack
11b rack
15 Spindle
16 cranks
16a
17 consecutive
18 Axis
19 Tilt maintenance stopper
25a receiving piece
26 Droop maintenance stopper G Boarding gate P Pillar
Pa side edge Q orbit T thickness direction X dead center

Claims (4)

  A drive box attached to the upper part of the inner side surface of the pillar constituting the entrance / exit and a pivoting shaft that is horizontally supported in parallel with the inner side surface of the pillar in the drive box, and the entrance / exit of the pillar in the vehicle when the entrance / exit is closed. A handrail for a vehicle comprising a handrail rod that hangs along the side edge of the mouth side and swings so that the lower end protrudes obliquely downward from the entrance and exits the vehicle when the entrance is opened. The drive box has a drive gear having a drive shaft in the thickness direction of the pillar perpendicular to the rotation shaft, a rotation gear pivotally attached to the rotation shaft, and a rack that meshes with each of the rotation gear and the drive gear. And an L-shaped rack integrally formed at right angles, and formed flat in the thickness direction of the pillar.   The handrail bar is fixed to the tip of a rotatable support shaft whose upper part is horizontally projected from the side of the drive box to the entrance / exit side, and the lower part of the fixed part and the crank with the base end fixed to the rotating shaft The tip of the shaft is pivotally connected via a linkage, and the handrail bar extending in the tilted state is set so that the pivot axis of the linkage is positioned beyond the dead center on the orbit of the pivot. The vehicular handrail according to claim 1, further comprising a tilt maintaining stopper that inhibits rotation of the crank at this time.   A receiving piece whose swinging motion is synchronized with the handrail rod is arranged on the track of the protruding piece provided on the crank front end side, and the receiving piece extends from just before the hanging state of the handrail rod to the hanging state on the protruding piece. The vehicular handrail according to claim 2, further comprising a droop maintenance stopper that suppresses rotation of a protruding piece that is pressed and continuously presses the receiving piece in a suspended state of the handrail bar.   4. The handrail for a vehicle according to claim 1, wherein the handrail bar is set so as to swing in association with an opening / closing operation of a door that opens / closes the entrance / exit.

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