JP2013180748A - Front wheel clamping device of motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front wheel clamping device of a motorcycle, which can clamp with pressure a lower side surface and an upper side surface of a motorcycle front wheel strongly with a toggle mechanism of a link, by moving a link fulcrum irrespective of sizes of a wheel diameter and a tire width of the uprightly installed motorcycle.SOLUTION: A lower side surface and an upper side surface of a front wheel are strongly clamped from both sides with a toggle mechanism of a link using a front wheel load of the motorcycle in such a way that a rack and pinion and a torque limiting mechanism are arranged to move the link fulcrum so as to follow the size of the front wheel width as the motorcycle is advanced, irrespective of the sizes of the wheel diameter and tire width of the motorcycle.

Description

  The present invention relates to a motorcycle from a moped to a large motorcycle (hereinafter referred to as “bike”). 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 multilevel 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. For this reason, there has been proposed a motorcycle overturn prevention device for stably parking a motorcycle on a mechanical multilevel parking device (Patent Document 1).

JP2011-235897 Japanese Patent Application No. 2010-189572

  The overturn prevention device described in Patent Document 1 is such that the tire width is set by the groove width of the lower holding portion, and the tire is sandwiched and pressed by the front stop portion from the front and rear, and is applicable to any tire width and tire diameter. It is impossible to do.

  In view of such circumstances, the present invention follows the size of the front wheel width regardless of the wheel diameter of the motorcycle mounted upright, moves the link fulcrum in the forward direction of the motorcycle, and uses the front wheel load of the motorcycle. An object of the present invention is to provide a front wheel clamp device for a motorcycle capable of pressing the front wheel lower side surface and the front wheel upper side surface firmly and laterally (hereinafter referred to as “clamp”) manually by a link toggle mechanism (see FIG. 21 of Patent Document 2). .

  In order to achieve the above-mentioned problems, the invention according to claim 1 is arranged such that clamp plates for holding the lower side surface of the front wheel of the motorcycle on which the motorcycle is mounted upright are arranged on both the left and right sides of the front wheel base plate. The distance between the left and right can be adjusted, the front wheel base plate descends with the weight of the front wheel of the bike when mounted upright, and the lower side of the front wheel is clamped from both sides according to the tire width by the toggle mechanism of the upper link and lower link, and A plurality of toggle clamps A with a front wheel base plate lifting mechanism are arranged below the front wheel base plate, the handles of the toggle clamps A are connected to each other by a connecting material, and the front wheel upper clamp is moved left and right in front of the clamp plate. The clamping plate is clamped and synchronized with the clamping block arranged as possible, and the upper link and the lower link equivalent to the front wheel lower side clamping mechanism are configured, and can be moved to the left and right above the clamping block. Toggle the left and right presser blocks to the bike center line side, a toggle clamp B that is connected to the rotation of the swinging plate with the pivot point is provided. The motorcycle is characterized by pressing the clamp plate on the front wheel upper side further toward the bike center line side by the toggle mechanism of the upper link and lower link for the upper front wheel and clamping the front wheel upper side surface simultaneously with the front wheel lower side surface. Front wheel clamp device.

  Further, the invention according to claim 2 is a torque having a function of setting a resistance torque generated by tire contact pressure by converting a linear motion of a moving portion provided with a front wheel base plate for mounting a motorcycle upright into a rotational motion. The front wheel clamp device for a motorcycle according to claim 1, further comprising a torque limiter that rotates idly when detected by a limiter, returns when the torque is less than a set torque value, and rotates forward and backward.

  As is apparent from the means for solving the problems, according to the front wheel clamp device for a motorcycle according to the first and second aspects of the invention, the front wheel width of the motorcycle mounted upright can be followed by moving the motorcycle forward. The link fulcrum is moved, and the resistance torque generated by the tire contact pressure on the left and right clamp plates is detected by the torque limiter. The front wheel upper side surface can be clamped at the same time by the toggle clamp B that arranges the limiter and firmly clamps and interlocks the front wheel lower side surface using the front wheel's own weight.

  Therefore, the operations of Claims 1 and 2 can be performed with one touch in conjunction with each other, and since the drive source is human power, an electric motor and a control device are not required, and a significant cost reduction can be achieved.

It is a top view of the front-wheel clamp apparatus of the motorcycle which shows Embodiment-1 of this invention. It is AA arrow sectional drawing of FIG. It is a BB arrow sectional view of Drawing 2. It is CC sectional view taken on the line of FIG. It is DD sectional view taken on the line of FIG. It is EE arrow sectional drawing of FIG. FIG. 5 is a cross-sectional view taken along line FF in FIG. 2. It is GG arrow sectional drawing of FIG. It is a HH arrow sectional view of Drawing 4. It is JJ arrow sectional drawing of FIG. It is KK arrow sectional drawing of FIG. It is LL arrow sectional drawing of FIG. (A) is explanatory drawing at the time of tire contact pressure of the front-wheel clamp apparatus of the motorcycle which shows Embodiment-1 of this invention, (b) is explanatory drawing at the time of clamping. (A) is explanatory drawing at the time of the front wheel clamp apparatus tire maximum contact pressure width of the motorcycle which shows Embodiment-1 of this invention, (b) is explanatory drawing at the time of the minimum contact pressure width of a tire. It is explanatory drawing of the left-right adjustment function of the front-wheel clamp apparatus of the motorcycle which shows Embodiment-1 of this invention. It is MM arrow sectional drawing of FIG. It is NN arrow sectional drawing of FIG. (A) is plane explanatory drawing of the front-wheel upper part clamp of the front-wheel clamp apparatus of the motorcycle which shows Embodiment-1 of this invention, (b) is a front view. It is explanatory drawing which made the screw shaft for lateral movement which shows Embodiment-1 of this invention the large lead. It is a side view of the front-wheel clamp apparatus of the motorcycle which shows Embodiment-2 of this invention.

  Hereinafter, the present invention will be described more specifically based on embodiments for carrying out the invention described in the drawings.

Embodiment-1

  As shown in FIGS. 1 and 2, the fixed frame 1 belonging to the fixed portion G is composed of, for example, a square steel pipe in the present embodiment, and the fixed frame 1 moves inwardly as a cross-beam shape when seen from the plane. Part P is formed.

  The moving frame 10 belonging to the moving part P is in a retreat limit, that is, in a waiting state for receiving, is stopped in contact with the retreat limit stopper 3b arranged on the fixed frame, and is stopped by the tension spring 47 and the magnet 49. Holding.

  At the forward limit of the moving frame 10, the forward limit stopper 3a disposed on the fixed frame 1 and the stopper block 11 disposed on the moving frame 10 come into contact with each other, and the moving frame 10 stops. The movement distance is assumed to be the forward movement amount S1.

  In the case of flat parking, the fixed frame 1 is fixed by a bracket 2 with a foundation and anchor bolts (not shown).

  As shown in FIGS. 3 and 7, the front wheel weight and the moving part of the motorcycle are arranged by, for example, four rail brackets 52 and slide rails 51 arranged on the left and right of the fixed frame 1. The weight of P is supported so as to be movable back and forth.

  As shown in FIGS. 1 and 10, a rack 45 disposed on the fixed frame 1 and fixed to the rack mounting member 46, and a pinion 44 at the end of the speed-up gear 41 (upper side in FIG. 10) disposed on the moving frame 10. Bite. When the front tire wheel FW of the motorcycle is brought into contact with the front wheel stopper 14 and moved forward, the rotation of the pinion 44 passes through the speed increaser 41, and the torque limiter 42, sprocket 43a and chain 43c arranged at the other end of the speed increaser 41. Then, the sprocket 43b is rotated.

  As shown in FIGS. 4, 8, and 9, the sprocket 43b is fixed to the end of a screw shaft (right screw, left screw) 15a that is rotatably supported by bearings 24a, 24b arranged on the left and right sides of the moving frame 10. doing.

  Screw hole bodies 16a and 16b opposite to each other are fixed to the center of the lateral movement block 15b arranged on the left and right, and the screw shaft 15a rotates forward or backward around the axis, When rotation of the screw shaft 15a moves the left and right laterally moving blocks 15b whose opposite ends are opposite to each other in the direction toward the center, the both ends (front and rear in FIG. 4) of the laterally moving blocks 15b are moved. The fixed fulcrum pin 20 also moves in the direction toward the center.

  The lateral movement block 15b is slidably supported by two guide rods 25 and a bush 25a, and the guide rods 25 are fixed to the movement frame 10, respectively.

  One end side (upper end side in FIG. 9) of the upper link 18b is connected to the left and right clamp plates 17 by a pin 19c so as to be rotatable forward and backward. One end of the lower link 18a is connected to the other end side (lower end side in FIG. 9) of each upper link 18b by a pin 19b so as to be able to rotate forward and backward. The other end of each of the left and right lower links 18a connected to the left and right clamp plates 17 via upper links 18b is connected to the base plate column 23a so as to be rotatable forward and backward, respectively, by pins 19a in the same axial direction. Yes.

  As described above, since the base plate column 23a is attached to two places, the upper link 18b and the lower link 18a are attached to a total of four places on the left and right and front and rear, respectively. The left and right clamp plates 17 are arranged at two places in the longitudinal direction, which is the diameter direction of the front tire wheel FW of the motorcycle, and are attached to the front and rear base plate columns 23a through the pin 19c, the upper link 18b, the pin 19b, the lower link 18a, and the pin 19a. Since they are connected, the lower side surface of the tire front wheel FW can be stably clamped from both sides with the fulcrum pin 20 as a fulcrum.

  Further, the base plate support 23a and the base plate lower plate 23b are integrated by welding or the like, and the base plate upper plate 22 is fixed by a bolt or the like, but the base plate support 23a and the base plate lower plate 23b are welded or the like. An integrated configuration may be used.

  As shown in FIGS. 9, 15, and 16, the tire front wheel FW contacts the front wheel stopper 14 and is mounted on the upper surface of the front wheel base plate 21. Two slide plates 61 and a block 64 a that presses the compression spring 63 are fixed to the lower surface of the front wheel base plate 21. Further, a guide member 62 and four blocks 64b, a compression spring 63, and a spring cover 65 are arranged on the upper surface of the base plate upper plate 22 so that the sliding plate 61 can slide left and right.

  The front wheel base plate 21 has grooves P2 at four locations on the front, rear, left and right sides, and four guide blocks 66 are arranged on the lower surface of the upper plate 12, and the guide blocks 66 enter the groove P2 The front, rear, left and right of the upper plate 22 are guided so as to be movable up and down.

  As shown in FIG. 17, there is a groove P3 on the front and back of the base plate lower plate 23b, and a guide 28 is disposed in the groove P3. The guide 28 is fixed to a guide mounting plate 28a fixed to the moving frame 10. The base plate lower plate 23b is guided up and down freely.

  As shown in FIGS. 4, 7, 10, and 11, the base plate upper plate 22 indicates the ascending limit, that is, before warehousing or when the front tire FW of the motorcycle is mounted. In this embodiment, the two toggle clamps A31a are in a clamped state. Toggle clamps A31a are fixed to the upper plate 12 at two positions on the front and rear sides of the base plate upper plate 22, and the base plate upper plate 22 is supported by bolts 31a1 of the toggle clamp A31a. The connecting member 32 is fixed to the handles 31a2 of the two toggle clamps A31a.

  As shown in FIG. 8, a foot pedal 91 is rotatably supported on the upper surface of the upper plate 12 with a pin 91a as a fulcrum. The foot pedal 91 is pivotally connected to a pin 93 and a link 92 that is rotatably disposed on the connecting member 32.

  As shown in FIGS. 2, 3, and 11, a sandwiching block 72 that sandwiches the clamp plate 17 is disposed at the front portion (left side in FIG. 2) of the moving frame 10, and a fulcrum pin is disposed at one end of the sandwiching block 72. 20 is fixed. The sandwiching block 72 is configured to be slidable by two guide rods 74b in conjunction with the lateral movement (left-right direction) of the clamp plate 17.

  Above the sandwiching block 72, there are provided two presser blocks 71 for pressing the upper side of the left and right clamp plates 17 from the left and right. The presser block 71 is slidably formed by two guide rods 74a. Yes.

  Similar to the lower clamp of the tire front wheel FW, the presser block 71 moves in the left-right direction with the fulcrum pin 20 in the left and right sandwiching block 72 as a fulcrum, the lower link 18a, the upper link 73b, and the pins 19a, 19b, 19c. It is connected to the base plate 73 through. Further, the upper link 73b fitted to the pin 19c has a long hole, and the base plate 73 is formed by integrating the above-described base plate upper plate 22, base plate column 23a and base plate lower plate 23b on the lower side of the front wheel. It is equivalent.

  The base plate 73 is guided so as to be movable up and down along a guide 75 fixed to the mounting base 76. The upper limit of the base plate 73 is limited by an upper limit stopper 77, and the lowering is supported by a compression spring 78.

  As shown in FIGS. 2, 11, 12, and 18, one end of the swing plate 33 is a long hole, and the pin 32 a at the end of the connecting member 32 is slidable. A spherical bearing 33a is disposed at the other end (the center in FIG. 12). A pin 36a fixed to the shaft 36 is formed on the spherical bearing 33a so as to be movable with respect to the spherical bearing 33, and is fixed to the moving frame 10. The shaft 36 is configured so that the shaft 36 can slide up and down in the hole portion of the block 35.

  A pedestal 37 and a pin 38 are fixed to the moving frame 10 in the middle of the rocking plate 33, and the rocking plate 33 is rotatably supported around the pin 38 as an axis.

  Here, when the foot pedal 91 is lowered at the forward limit of the moving part P, the rocking plate 33 rises with the pin 38 as a fulcrum (in the center part in FIG. 12), and accordingly the pin 36a and the shaft 36 rise, By being inserted into the hole of the return preventing plate 4, the moving part P is locked and cannot move.

  Similarly, when the foot pedal 91 is lowered, the handle 81a1 of the toggle clamp B81 is raised, the bolt 81a2 is lowered, and the base plate 73 is pushed down through the universal joint 82 and the hardware 83 above the end of the swing plate 33. The left and right clamp plates 17 are further pressed to the center side by the holding block 71 with the fulcrum pin 20 of the left and right holding block 72 as a fulcrum through the pin 19c, the upper link 73b, the pin 19b, the lower link 18a and the pin 19a. The upper clamp can be made stable.

  Here, when the foot pedal for temporarily releasing the clamp is raised, the handle 81a1 of the toggle clamp B81 is lowered, the bolt 81a2 is raised, and the base plate 73 is moved through the universal joint 82 and the hardware 83 above the end of the swing plate 33. Through the pin 19c, the upper link 73b, the pin 19b, the lower link 18a, and the pin 19a, the holding block 71 is pressed by the compression spring 78 with the fulcrum pin 20 of the left and right sandwiching block 72 as a fulcrum, and the amount of movement is restored. Let

  As shown in FIG. 8, the left and right rubber plates 17 a are respectively fixed to the elevating material 26. As shown in FIG. 1, the elevating material 26 is formed so as to be movable up and down by an elevating guide 26 a disposed on the clamp plate 17, and an elevating amount equal to or higher than the elevating amount H is secured by two front and rear compression springs 27.

  Therefore, when the front wheel base plate 21 is lowered, the tire front wheel FW is lowered together with the front wheel base plate 21 even if the rubber plate 17a is pressed against the tire front wheel FW.

  Next, the operation based on the configuration of embodiment-1 for carrying out the invention will be described below.

  FIG. 13A shows the tire contact pressure. When the tire front wheel FW on the front wheel base plate 21 is moved forward, the left and right lateral movement blocks 15b move in the direction of the motorcycle centerline. The moving method will be described later.

  FIG. 13B shows the tire clamping operation. In the clamping operation, as shown in FIG. 7, when the handle 31a2 of the toggle clamp 31a is lowered, the bolt 31a1 is lowered. As a result, the base plate lower plate 23b, the base plate support 23a, the base plate upper plate 22 and the front wheel base plate 21 are lowered and landed and stopped on the upper surface of the upper plate 12 disposed on the upper surface of the moving frame 10. In the operation process, the pins 19a, 19b, and 19c rotate with the fulcrum pin 20 as the center of rotation, the link 18a is toggled by the link 18b by the front wheel weight, and the clamp plate 17 and the rubber plates 17a and 17b. Clamp the tire surface. With this operation, the clamping force is several times the weight of the front wheel of the motorcycle depending on the angle of the link 18a.

  Since the angles of the links 18a and 18b change depending on the lift amount H, the lift amount H for obtaining a predetermined clamping force may be determined. The lift amount H adjusts the protruding amount of the bolts 31a1 of the two toggle clamps A31a. .

FIG. 14A shows the maximum opening width, and FIG. 14B shows the state before clamping when the tire is narrow. As shown in FIG. 1, the lateral movement amount S2 of the lateral movement block 15b is as follows. When the tire front wheel FW comes into contact with the front wheel stopper 14 and moves forward, the entire moving part P moves, and the rack 45 and the moving part P on the fixed part G side move. The side pinion 44 meshes and the pinion 44 rotates. The rotation is increased by the speed increaser 41, for example, the speed increasing ratio is 10, the lead of the screw shaft 15a is 4 mm, the movement amount of the pinion 44 in one rotation is 100 mm, and the lateral movement amount S2 is 15 mm (the lead is screw The amount of advance when the shaft 15a rotates once), and
Required forward travel S1req = (S2 / lead) × (Pinion travel / speed increase ratio)
= (15/4) x (100/10)
= 37.5 mm.
Therefore, the forward movement amount S1 = 40 mm.

  As the moving part P advances, as shown in FIG. 10, the rubber plate 17a hits the tire front wheel FW as described above and a reaction force is generated on the screw shaft 15a by the rack and pinion mechanism. The reaction force becomes resistance torque to the torque limiter 42 connected to the sprocket 43a disposed at one end of the speed increasing device 41. Therefore, when the slip torque value of the torque limiter 42 is set and the resistance torque exceeds the slip torque, the sprocket 43a rotates idly.

As shown in FIG. 19, the screw shaft 15a can be configured as a large lead without the speed increaser 41. For example, if the lead amount of the screw shaft 15a is 40 mm, the movement amount of the pinion 44 is 100 mm and the lateral movement amount S2 is 15 mm, the required forward movement amount is the same as described above.
Required forward movement amount S1req = (15/40) × (100/1)
= 37.5mm
In the same manner as described above, the forward movement amount S1 = 40 mm.

  Here, when the flange 42b to which the pinion 44 is fixed and the ON / OFF flange 42a disposed in the torque limiter 42 are fixed with bolts or the like, the left and right rubber plates 17a come into contact with the tire front wheel FW and are generated. When the force exceeds the slip torque of the torque limiter 42 disposed at one end of the screw shaft 15a, the flanges 42a and 42b and the pinion 44 are idled.

  As the sprocket 43a is idling, as shown in FIG. 8, the rotation of the sprocket 43b fixed to one end of the screw shaft 15a is advanced while stopped, and the stopper block 11 comes into contact with the stopper 3a as shown in FIG. Stop.

  Next, when the moving part P on which the tire front wheel FW is mounted is moved backward, as shown in FIG. 10, when the pinion rotates in the reverse direction and is within the set torque of the torque limiter 42 fixed to the speed increaser 41, the rotation starts. As the sprocket 43a starts rotating, the chain 43c, the sprocket 43b, and the screw shaft 15a rotate reversely, and the left and right laterally moving blocks 15b move away from the tire front wheel FW.

  In the warehousing operation, the motorcycle is first pushed, and the front wheel FW is guided by the guide plate 13 and comes into contact with the front wheel stopper 14 to stop. When further pushed in, as described above, the screw shaft 15a is rotated forward by the rack and pinion mechanism, the rubber plates 17a and 17b are brought into pressure contact with the front wheels FW, and when the pressing load reaches the set torque, the screw shaft 15a is rotated idly by the torque limiter 42. Then, the rubber plate 17a, 17b remains in the position before idling, and the stopper block 11 on the moving part P side contacts and stops on the stopper 3a on the fixed part G side. At this point, the bike is not stable, but it can stand on its own.

  Next, when the foot pedal 91 is depressed and the connecting member 32 is lowered, the bolt 31a1 of the toggle clamp A31a is lowered, the front wheel base plate 21 is lowered by the weight of the front wheel of the motorcycle, and the toggle mechanism of the upper link 18b and the lower link 18a. As shown in FIG. 18 (b), the lower side surface of the front wheel FW is clamped from both sides, and at the same time, as shown in FIG. 18 (b), the toggle clamp B81 of the toggle clamp B81 is rotated. When the handle 81a1 is pushed up, the bolt 81a2 is lowered by the toggle mechanism, and the base plate 73 for clamping the upper front wheel is lowered. By pressing the holding block 71 against the upper outer surface of the clamp plate 17 by the toggle mechanism of the upper link 73b and the lower link 18a connected to the base plate 73, the upper portion of the front wheel is further clamped.

  In conjunction with the upper movement, the shaft 36 connected to the end portion (center portion in FIG. 12) of the swing plate 33 rises and is inserted into the hole portion of the return prevention plate 4 on the fixed portion G side, and the moving portion P is locked. Is done.

  As described above, the warehousing operation is completed with one touch of stepping on the foot pedal 91.

  In the unloading operation, when the stepping pedal 91 is stepped on the opposite tread surface from when the foot pedal 91 is stored, the connecting member 32 moves up. As the connecting member 32 rises, the bolt 31a1 of the toggle clamp A31a rises, and as the front wheel base plate 21 carrying the front wheel FW of the motorcycle rises, the upper link 18b for lowering the front wheel lower side surface returns by the amount of the clamp. . At the same time, the swing plate 33 disposed at the end of the connecting member 32 turns left, and as shown in FIG. 18B, when the handle 81a1 of the toggle clamp B81 is lowered, the bolt 81a2 is raised, and the base plate for the front wheel upper clamp. 73 is raised by a spring 78. The presser block 71 is separated from the clamp plate 17 to the left and right by the upper link 73b and the lower link 18a connected to the base plate 73 by the ascent. At this point, the bike is not stable but is self-supporting.

  In conjunction with the above operation, the shaft 36 connected to the end of the rocking plate 33 is lowered, and is lowered below the lower surface of the return preventing plate 4 on the fixed portion G side, and the moving portion P is unlocked.

  Next, when the motorcycle is manually moved backward, it is pulled by the tension spring 47, and when it becomes below the set torque of the torque limiter 42, the screw shaft 15a is reversed by the rack and pinion mechanism, and the rubber plates 17a and 17b are moved to the front wheels FW. The clamp is released further away. The moving part P stops at the stopper 3b in the backward limit, and the motorcycle can be left as it is.

Embodiment-2

  Embodiment 2 shows the case of applying the front wheel clamping device for a flat motorcycle according to Embodiment-1 as a mechanical three-dimensional bicycle parking apparatus, and the description of the same structure as Embodiment-1 is omitted. .

  As shown in FIG. 20, when a mechanical multi-story parking machine is used as a bicycle parking device, the moving part P according to the present invention cuts the operating range in the mounting frame PA, and the fixing part G is fixed to the mounting frame PA. A driving source such as a motor is unnecessary, and the front wheel clamp and release of the motorcycle can be performed only by human power.

DESCRIPTION OF SYMBOLS 1 Fixed frame 2 Bracket 3a Forward limit stopper 3b Reverse limit stopper 4 Return prevention plate 10 Moving frame 11 Stopper block 12 Upper plate 13 Guide plate 14 Front wheel stopper 15a Screw shaft (right screw, left screw)
15b Horizontally moving block 16a Screw hole body 16b Screw hole body 17 Clamp plate 17a Rubber plate 17b Rubber plate 18a Lower link 18b Upper links 19a, 19b, 19c Pin 20 Support pin 21 Front wheel base plate 22 Base plate upper plate 23a Base plate support 23b Base plate lower plate 24a Bearing 24b Bearing 25 Guide rod 25a Bush 26 Lifting material 26a Lifting guide 27 Compression spring 28 Guide 28a Guide mounting plate 31a Toggle clamp A
31 a 1 Bolt 31 a 2 Handle 32 Connecting material 32 a Pin 33 Oscillating plate 33 a Spherical bearing 35 Block 36 Shaft 36 a Pin 37 Base 38 Pin 41 Speed increaser 42 Torque limiter 42 a ON / OFF flange 42 b Flange 43 a Sprocket 43 b Sprocket 43 c Chain 44 Pinion 45 Rack 46 Rack mounting material 47 Tension spring 49 Magnet 51 Slide rail 52 Rail bracket 61 Slide plate 62 Guide material 63 Compression spring 64a Block 64b Block 65 Spring cover 66 Guide block 71 Presser block 72 Clip block 73 Base plate 73b Upper link 74a Guide Rod 74b Guide rod 75 Guide 76 Mounting base 77 Upper limit stopper 78 Compression spring 81 Toggle clamp B
81a1 Handle 81a2 Bolt 82 Universal joint 83 Hardware 91 Foot pedal 91a Pin 92 Link 93 Pin G Fixed part P Moving part P1 Notch groove P2 Groove P3 Groove PA Mounting frame FW Front wheel H Lifting amount S1 Forward movement amount S2 Lateral movement amount Lmax Maximum Opening width Lmin Minimum contact pressure width L1 Tire width L2 at contact pressure Tire width L3 after clamping Maximum fulcrum pin distance L4 Minimum fulcrum pin distance

Claims (2)

A clamp plate that holds the lower side of the front wheel of the motorcycle mounted upright from both sides is arranged on both the left and right sides of the front wheel base plate so that the distance between the left and right clamp plates can be adjusted. As the front wheel base plate descends, the lower link of the front wheel is clamped from both sides according to the tire width by the toggle mechanism of the upper link and lower link, and a plurality of toggle clamps A having the front wheel base plate lifting mechanism are attached to the front wheel. Arranged below the base plate, connected the handles of toggle clamp A with a connecting material, for clamping the front wheel, clamp the clamp plate with a sandwich block arranged to move left and right in front of the clamp plate, The upper and lower links that are equivalent to the clamp mechanism on the lower side of the front wheel are configured, and the left and right presser blocks that are arranged to be movable left and right above the sandwiching block are further centered on the motorcycle. Toggle clamp B that is connected to the rotation of the swinging plate with the pivot point is arranged so that it is pressed to the side, and the front wheel upper base plate is pushed down by toggle clamp B, and the upper link and lower link for the upper front wheel A front wheel clamping device for a motorcycle, characterized in that the front wheel upper clamp plate is further pressed against the motorcycle center line side by the toggle mechanism and the front wheel upper portion is clamped simultaneously with the front wheel lower portion. The linear motion of the moving part including the front wheel base plate on which the motorcycle is mounted upright is accelerated and converted into rotational motion, and when the resistance torque generated by the tire contact pressure is detected by a torque limiter having a torque setting function, The front wheel clamp device for a motorcycle according to claim 1, further comprising a torque limiter that returns when the torque is less than a set torque value and rotates in the forward and reverse directions.

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