JP2017036021A - Clamp device for front wheel of motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp device for a front wheel of a motorcycle which can cause a toggle mechanism of a link and a toggle clamp to firmly pressure-contact onto side surfaces of the front wheel of the motorcycle by moving a link fulcrum regardless of a wheel diameter and a tire width of the motorcycle which are mounted upright.SOLUTION: In a clamp device for a front wheel of a motorcycle, a push/pull bar member is pulled to cause a rack and pinion mechanism to rotate a screw shaft 41a to move a link fulcrum so as to contact clamp plates with respective rubber plates attached thereto, onto side surfaces of a front wheel WF, and then, a toggle clamp 90 is operated to cause a toggle mechanism of a link to clamp the side surfaces of the front wheel FW from both sides.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a motorcycle with a motorcycle and a motorcycle (hereinafter referred to as “bike”). When the bicycle is parked in a predetermined place, or the motorcycle is installed in a city or the like, a flat type and a mechanical three-dimensional parking. The present invention relates to a bicycle parking device that can be used as a bicycle parking device.

  Bikes are less stable when parked than four-wheeled vehicles, and the flat type falls due to an earthquake, and when incorporated in a mechanical three-dimensional bicycle parking device, it vibrates due to vibration, shock, or earthquake during an emergency stop. There is a risk of falling and falling due to, etc. Therefore, in order to stably park a motorcycle on a mechanical three-dimensional bicycle parking device, a motorcycle overturn prevention device has been proposed (Patent Document 1, Patent Document 2, Patent Document 3).

JP2011-235897 Japanese Patent Application No. 2010-189572 Japanese Patent Application No. 2012-243928

  The fall prevention device described in Patent Document 1 is limited to the tire width by the groove width of the front wheel lower support part, and sandwiches and presses the tire from the front and rear by the front stop part and the rear presser, and can be applied to any tire width. In order to prevent left and right deflection, it is necessary to prepare the groove width of the front wheel lower holding portion for each tire width.

  The bicycle parking apparatus described in Patent Document 2 drives a screw shaft (right screw, left screw) for lateral movement of the upper link fulcrum on the left and right sides of the motorcycle center line by a motor. When applied to a parking apparatus, the power supply and the configuration of the drive system are costly.

  The front wheel clamp device for a motorcycle described in Patent Document 3 converts a linear motion of a moving frame into a rotational motion by a rack and pinion, accelerates it with a speed increaser, and torques a resistance torque generated on a screw shaft due to tire contact pressure. It is composed of a torque limiter that rotates idly when detected by a torque limiter having a setting function, and that rotates forward and reverse when it falls below the set torque. The number of components is complicated, and there is a difficulty in repeatability.

  In order to achieve the above object, the invention according to claim 1 is arranged such that a clamp plate having rubber plates fixed from both sides of a front wheel side of a motorcycle on which a motorcycle is mounted upright is disposed on both left and right sides of a front wheel stopper on a motorcycle center line. The left and right clamp plates can be adjusted to the left and right distances, and by pushing the pulling bar material on the upright bike front wheel, the linear motion is converted into the rotational motion by the rack and pinion. Two sets of upper link and lower link that are formed in the same axial direction with opposite screw holes, screw shafts that are hinged on the opposite sides of the left and right moving bodies, and arranged on the front and rear of the moving body With this link mechanism, the side surface of the front wheel abuts from the left and right with a clamp plate to which a rubber plate is fixed. Next, by pushing down the lifting platform connected to the lower link by the toggle clamp, the upper link is rotated to the bike center line side around the upper link fulcrum by the toggle mechanism, and the clamp plate to which the rubber plate is fixed is further centered on the bike. A motorcycle front wheel clamp device that is pressed against the wire side and firmly presses the side of the front wheel from the left and right.

  As is apparent from the means for solving the problems, according to the motorcycle front wheel clamp device according to the first aspect of the present invention, the drive source is only human power, so it does not matter during a power failure, and a drive device such as an electric motor. And a control apparatus becomes unnecessary and can aim at a significant cost reduction.

  It is a top view of a motorcycle front wheel clamp device showing an embodiment of the present invention.   It is AA arrow sectional drawing of FIG. 1, and is the state before motorcycle storage.   It is a BB arrow sectional view of Drawing 1, and is the state at the time of motorcycle storage.   It is CC sectional view taken on the line of FIG.   FIG. 6 is a DD arrow view of FIG. 4.   FIG. 4 is a cross-sectional view taken along the line EE in FIG.   It is a FF arrow line view of FIG.   It is GG arrow sectional drawing of FIG.   It is explanatory drawing of the raising / lowering board part before a clamp.   (A) is explanatory drawing which shows the time of the maximum opening width, (b) is explanatory drawing which shows the time of the minimum opening width.   (A) is explanatory drawing which shows the time of tire contact, (b) is explanatory drawing which shows the time of tire clamping.

  Hereinafter, a motorcycle front wheel clamp device 100 according to an embodiment for carrying out the invention described in the drawings will be described with reference to the drawings as appropriate.

  As shown in FIGS. 1, 2, and 6, rubber plates 71 a are respectively fixed to the bike center line side of the left and right clamp plates 71, and the clamp plates 71 are fixed to the frame 10 with the guide rods 72 and the clamp plates. It is supported by a slide guide A73 fixed to 71 so as to be movable. In the present embodiment, the slide guide A73 is an LM guide (product name) including a ball bearing and eliminates play as much as possible.

  Further, two hinges 77 are fixed to the front and rear of the left and right clamp plates 71, respectively, for a total of four. A front wheel stopper 23 is fixed to the bike center line portion of the guide rod 72.

  FIG. 2 shows a state before the motorcycle is stored, and the guide plate 81 to which the pin 81a is fixed is rotatably supported by hinges 83 disposed on the left and right of the rear portion of the frame 10. In the present embodiment, a rubber plate 11 is fixed to the motorcycle center line at the rear of the frame 10.

  As shown in FIGS. 1, 7, and 8, the rail portion of the slide guide B31 is fixed to the left side (lower side in FIG. 1) of the frame 10, and the slide guide B31 is attached to the rack mounting member 38 to which the rack 37 is fixed. The bracket portion is fixed, and the rack mounting member 38 to which the rack 37 is fixed is movably supported. In the present embodiment, the slide guide B31 is an LM guide (product name) containing a ball bearing, which reduces friction coefficient and eliminates play as much as possible.

  A pinion 36 that meshes with the rack 37 is attached to one end of a screw shaft 41a that is rotatably supported by a bearing 47b fixed to the frame 10, and a pinion 36 by a power lock 36a (trade name) by a frictional fastening method using a taper. And are fixed to the screw shaft 41a. Here, when the power lock 36a is loosened, the pinion 36 idles and the screw shaft 41a does not rotate.

  As shown in FIG. 7, when the push / pull bar member 39 is fixed to the rack mounting member 38 and the push / pull bar member 39 is pulled rearward (right side in FIG. 7), the pinion 36 and the screw are moved along with the movement of the rack 37. The shaft 41a rotates forward, and the rack mounting member 38 moves and stops until it hits the stopper 32 fixed to the frame 10. The maximum movement amount is S1. At this time, as shown in FIG. 11A, the left and right rubber plates 71a are in contact with the front wheels FW so that the motorcycle can stand on its own. The push-pull bar material 39 may be arranged to an appropriate position on the left side of the motorcycle driver.

  As shown in FIGS. 4 and 6, the screw shaft (right screw, left screw) 41 a is rotatably supported by bearings 47 a and 47 b disposed on the left and right sides of the frame 10. Also, screw holes 42a, 42b opposite to each other are fixed to the moving body 41b arranged on the left and right, and the screw shaft 41a rotates forward or backward around the axis, for example, a screw shaft When the left and right moving bodies 41b whose both end sides are oppositely hinged to each other are moved in the direction toward the center of the motorcycle center line, the four fulcrum pins fixed to the front and rear of the moving body 41b 45 also moves in the direction toward the center.

  As shown in FIG. 6, one end side (upper end side in FIG. 6) of the upper link 43b is connected to a hinge 77 fixed to the left and right clamp plates 71 by a pin 44c so as to be rotatable forward and backward. One end of the lower link 43a is connected to the other end side (lower end side in FIG. 6) of the upper link 43b by a pin 44b so that the other link side of each of the left and right lower links 43a is a lifting platform. The plate 46 is connected to the plate 46 by a pin 44a in the same axial direction so as to be rotatable forward and backward. A long slot 48 is provided in the upper link 43b connected to the pin 44c.

  Further, the positive rotation of the pinion 36 causes the screw shaft 41a to rotate forward, the left and right moving bodies 41b move to the bike center line side, and the fulcrum pins 45 fixed to both ends of the moving body 41b are used as pivot fulcrums. With the link mechanism of the upper link 43b and the lower link 43a, the clamp plate 71 and the rubber plate 71a contact the front wheel FW from the left and right as the pin 44c on the upper link 43b rotates toward the bike center line. In addition, a long slot 48 is provided in the upper link 43b to absorb the vertical displacement of the pin 44c as the upper link 43b rotates.

  As shown in FIGS. 3, 4, and 9, a bottom plate 10 a is fixed to the lower portion of the frame 10. In this embodiment, three guide pins 88 are fixed to the bottom plate 10a. As shown in FIG. 9, the guide pin 88 is provided with a compression spring 89 and a spacer 89a. The upper end of the guide pin 88 and the lift base plate 46 are fixed to each other so as to be movable up and down. Further, on the upper surface of the lifting plate 46, a screw shaft 41a and a presser foot 46a having a clearance in the vertical direction are arranged.

  In front of the frame 10, an arm 91 is rotatably supported by a fulcrum pin 91a. A presser pin 91 a is fixed to one end of the arm 91, and when the toggle clamp 90 is free, the presser pin 91 b is in contact with the upper end of the presser foot metal 46 a by the reaction force of the compression spring 89.

  FIG. 9 shows a state in which the clamp is free. When the toggle clamp 90 arranged in front of the frame 10 is operated in the clamping direction, the presser foot 46a is held by the presser pin 91b arranged at one end of the arm 91 with the fulcrum pin 91a as the center of rotation. Then, the lift base plate 46 is pushed down, the clearance with the spacer 89a becomes zero (lowering amount H), and this state is maintained. At this time, as shown in FIG. 11B, the left and right rubber plates 71a are in pressure contact with the front wheels FW, and the motorcycle is stably independent.

  Here, when the toggle clamp 90 for releasing the clamp is operated to the free side, the lifting base plate 46 and the presser foot 46a are lifted by the reaction force of the compression spring 89, and the arm 91 is rotated around the fulcrum pin 91b to be in its original shape. Return. The toggle clamp 90 is unlocked. At this time, the state becomes as shown in FIG. 11A, and the left and right rubber plates 71a are in contact with the front wheels FW, and the motorcycle is not stable, but can stand on its own.

  Next, the operation based on the configuration of the embodiment for carrying out the invention will be described below.

FIG. 10A shows the maximum opening width, and FIG. 10B shows the minimum opening width. As shown in FIGS. 3 and 7, the lateral movement amount S2 of the moving body 41b due to the rotation of the pinion 36 is obtained by bringing the front wheel FW into contact with the front wheel stopper 23 and then pulling the push-pull bar member 39 to the right (rear). The engagement of the rack 37 and the pinion 36 causes the pinion 36 to rotate forward. For example, if the lead of the screw shaft 41a (the lead is the advance amount of the screw shaft per rotation) is 6 mm, the movement amount of the pinion 36 per rotation is 100 mm, and the lateral movement amount S2 is 15 mm, the push-pull bar material 39 If the required amount of movement by S1 is S1,
Required movement amount S1req = (lateral movement amount S2 / lead) × (movement amount of one rotation of pinion)
= (15/6) x 100
= 250mm
This is necessary and the amount of movement becomes large.

  When the maximum opening width at the distance between the left and right rubber plates 71a is Lmax, the maximum fulcrum pin distance of the fulcrum pin 45 is L3, the minimum opening width is Lmin, and the minimum fulcrum pin distance is L4, the lateral movement amount S2 = L3- L4.

  Therefore, as shown in FIG. 7, in this embodiment, the movement amount S1 = 150 mm and the two stages A and B are used. In the A setting, the lateral movement amount S2 was set to 0 to 9 mm, and in the B setting, the lateral movement amount S2 was set to 6 to 15 mm. Therefore, in both the A setting and the B setting, the lateral movement amount S2 is 9 mm. Therefore, the necessary movement amount S1 of the push-pull bar member 39 = (9/6) × 100 = 150 mm.

  Therefore, as shown in FIGS. 4 and 5, the B setting bolt 13 is 6 mm longer than the A setting bolt 12 in the difference S3 in the bolt length between the B setting bolt 13 and the A setting bolt 12. The A setting bolt 12 is effective for a wide tire such as a motorcycle, and the B setting bolt 13 is effective for a narrow tire such as a moped.

  Further, when the A and B settings are changed, as shown in FIG. 8, in order to put the pinion 36 in the idling state, the power lock 36a is loosened, and as shown in FIG. 6, the other end of the screw shaft 41a (FIG. 6). Then, after rotating the square bar portion 41c arranged on the right side with a wrench (not shown), the power lock 36a is tightened to return.

  As shown in FIG. 11, when the front wheel FW tire width is arbitrary and the clamp 90 shown in FIG. 9 is operated in the clamping direction, as shown in FIG. The lower link 43a and the upper link 43b are rotated to the bike center line side about the fulcrum pin 45 by the descending amount H, and the clamp plate 71 to which the rubber plate 71a is fixed and the pin 44c disposed on the hinge 77 are provided. The long groove 48 of the upper link 43b is firmly pressed against the front wheel FW side by a toggle mechanism.

  Here, when an arbitrary tire width on one side is L1, and a tire width on one side after clamping is L2, the tire compression amount K per side is K = L1-L2.

  The warehousing operation is stopped by first contacting the front wheel stopper 23 disposed on the frame 10 guided by the rotating guide plate 81 by being boarded or pushed on the motorcycle. Next, when the push-pull bar member 39 is pulled, as described above, the screw shaft 41a is rotated forward by the rack 37 and the pinion 36, and as the left and right moving bodies 41b move toward the bike center line, the lower link The rubber plate 71a fixed to the clamp plate 71 by 43a and the upper link 43b comes into contact with the front wheel FW and stops. At this point the bike is not stable but can stand on its own.

  Next, when the motorcycle is dismounted and the toggle clamp 90 disposed in front of the frame 10 is operated in the clamping direction, the presser foot 46a and the lift base plate 46 are lowered as the arm 91 is strongly pressed down, and the lower link 43a and the upper link 43b are displaced, and the rubber plate 71a fixed to the left and right clamp plates 71 further presses and locks the front wheel FW to the bike center line side. At this point, the bike is stable and independent.

  When the toggle clamp 90 disposed in front of the frame 10 is operated in the free direction, the lower link 43a and the upper link 43b are displaced as the lifting base plate 46 and the presser foot 46a are raised by the arm 91 compression spring 89. Then, the rubber plates 71a fixed to the left and right clamp plates 71 are separated from the motorcycle center line to the left and right to release the pressure contact of the front wheels FW. At this point the bike is not stable but can stand on its own.

  Next, when the user rides on the motorcycle and pushes the push-pull bar member 39, the screw shaft 41a is reversely rotated by the rack 37 and the pinion 36 as described above, and the left and right moving bodies 41b are separated from the motorcycle center line to the left and right. Accordingly, the rubber plate 71a fixed to the left and right clamp plates 71 by the lower link 43a and the upper link 43b can be left out of the front wheel FW as it passes through the guide plate 81.

  According to the present invention, a driving source such as a motor is unnecessary, and the front wheel of the motorcycle can be reliably clamped only by human power. Therefore, it can be used as a flat-type bicycle parking machine and a mechanical three-dimensional bicycle parking machine.

100 Bike Front Wheel Clamp Device 10 Frame 10a Bottom Plate 11 Rubber Plate 12 A Setting Bolt 13 B Setting Bolt 23 Front Wheel Stopper 31 Slide Guide B
32 Stopper 36 Pinion 36a Power lock 37 Rack 38 Rack mounting material 39 Push-pull bar material 41a Screw shaft 41b Moving body 41c Square bar portion 42a Screw hole body 42b Screw hole body 43a Lower link 43b Upper link 44a, 44b, 44c Pin 45 Support point Pin 46 Elevating base plate 46a Presser foot 47a Bearing 47b Bearing 48 Long groove hole 71 Clamp plate 71a Rubber plate 72 Guide rod 73 Slide guide A
77 Hinge 81 Guide plate 81a Pin 83 Hinge 88 Guide pin 89 Compression spring 89a Spacer 90 Toggle clamp 91 Arm 91a Support pin 91b Presser pin FW Front wheel H Lowering amount S1 Moving amount S2 Lateral moving amount S3 Bolt length difference Lmax Maximum opening width Lmin Minimum opening width L1 Arbitrary tire width L2 Tire width after clamping L3 Maximum fulcrum pin distance L4 Minimum fulcrum pin distance K Tire compression

Claims (1)

A clamp plate with rubber plates fixed on both sides of the front wheel side of the motorcycle that mounts the motorcycle upright is arranged on both the left and right sides of the front wheel stopper on the motorcycle center line, making it possible to adjust the left and right spacing of the left and right clamp plates. By pulling the push and pull bar material on the front wheel of the motorcycle, linear motion is converted into rotational motion by rack and pinion, and left and right moving holes are formed in the same axial direction on the left and right moving bodies that are pivotally supported. Clamp plate with a rubber plate fixed to the side of the front wheel by two upper link and lower link link mechanisms arranged on the front and rear of the moving body. At the left and right. Next, by pushing down the lifting base plate connected to the lower link by the toggle clamp, the upper link is rotated to the bike center line side around the upper link fulcrum by the toggle mechanism, and the clamp plate to which the rubber plate is fixed is further moved. A motorcycle front wheel clamp device that presses against the bike center line and firmly presses the side of the front wheel from the left and right.

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