JP2003237548A - Jack stand for motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rapidly carry out a lifting work of a motorcycle by a jack stand. <P>SOLUTION: The jack stand 40 for a motorcycle comprises a lifting frame 71 vertically movably mounted to a strut 43 of a stand body 41 through a parallel link 50; a jack up shaft 74 horizontally extending from the lifting frame; an ascending lever 81 for ascending the lifting frame by a principle of lever; a lock member 91 laid between the strut and the ascending lever in order to retain the ascending lever at an ascended position. The lock member is made swingable by mounting an upper end of the lock member to the strut by a pin. The jack stand 40 is provided with a resilient member 92 for resiliently urging the lock member to a lock side; and a lock release member 110 for pulling the lock member to a direction of lock-releasing. The other end of the lock release member is moved along an oblique long hole raised while leaving from the jack up shaft and a handle 122 is provided on the other end of the lock release member. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upright motorcycle.
Improvement technology of jack stands for motorcycles that lift cars
About. 2. Description of the Related Art In endurance racing of motorcycles, maintenance is performed.
-Frequent inspection work, especially replacement of wheels. During the race
Therefore, it is necessary to change wheels quickly.
It is. In order to perform the replacement work quickly,
Lift the wheel so that the wheels are off the ground.
A jack stand is used for that. This kind of automatic
A jack stand for a wheel is disclosed in, for example,
No. 47483, “Motorcycle” (hereinafter referred to as “conventional technology”).
Is known). The above prior art is disclosed in FIG. 1 and FIG.
According to FIG. 2, the motorcycle 1 (the reference numeral is
Quoted things. same as below. )
The key 20 is provided. [0004] The motorcycle 1 enters the pit during the endurance race.
Compressed air into the air plug 27 of the air jack 20
A one-touch mounting of the source coupler 28
Extend the air jack 20 to hold the front of the body.
increase. Thus, the front wheel 4 can be replaced. one
The rear jack 30 from behind the rear wheel 12 to the rear of the vehicle
After being inserted, the car is operated by swinging the operation unit 33.
Lift the back of the body. Now you can replace the rear wheel 12
it can. After replacing the front and rear wheels 4 and 12, the air
By releasing compressed air from the jack 20, the front of the vehicle body
Then, remove the coupler 28 from the air plug 27. Soshi
After swinging the operation unit 33 and lowering the rear of the vehicle
Then, the rear jack 30 is pulled out from the rear of the vehicle body. [0006] The above-mentioned prior art is self-contained.
The motorcycle 1 is provided with an air jack 20 on the motorcycle 1 itself.
You. However, depending on the model, the air jack 20
May not be possible. Furthermore, air jack
20 is relatively expensive, and the compressed air source and air piping
It's not a good idea because it is necessary. Also, the front of the vehicle is raised and lowered
To install and remove the coupler 28 from the air plug 27
Operation and air supply operation to the air jack 20 or air release
Two operations, ie, an out operation, are required. On the other hand, to lift the rear part of the vehicle body, a rear jar
Operation of inserting the jack 30 from behind the rear wheel 12 to the rear of the vehicle body
Operate the operation unit 33 and use the rear jack 30 to
And two operations are required. Lifted
To lower the rear part of the car body,
The operation of lowering the rear of the vehicle with the jack 30 and the rear jack
You need to pull out 30 from the rear of the vehicle
is there. Thus, motorcycles during maintenance and inspection work
There is room for improvement to speed up and lower the car. Accordingly, an object of the present invention is to raise and lower a motorcycle.
Motorcycle jacks that can perform work more quickly
It is to provide key stand technology. [0009] In order to achieve the above object,
Claim 1 describes a base frame and the base frame.
Upright upright and downright through a parallel link
Movably mounted lifting frame and this lifting frame
And a jack-up shaft that extends almost horizontally
A lever for raising the frame by leverage
Post and lift to hold the lift lever in the raised position
And a lock member to pass between the lever
Insert the up shaft into the body of the motorcycle for ascending
Motor that can raise the motorcycle by the action of the lever
In the jack stand for motorcycles, the lock member
Swing the lock member by attaching the end to the support with a pin
And a resilient member that makes the lock member spring toward the lock side.
Lock member that pulls the lock member in the unlock direction.
The other end of this unlocking member is used for jack-up
Move along an oblique long hole that rises away from the shaft
Handle at the other end of the unlocking member.
And pull up this handle to lock the lock member.
Release operation and reverse operation of the entire jack stand,
It can be performed in this order. A lifting / lowering device having a jack-up shaft
Hold the lifting lever when the frame is in the raised position.
Lock member to pass between the column and the lifting lever
To allow the upper end of this lock member to swing on the support
A resilient member for mounting and resiliently locking the locking member toward the locking side;
A lock release member is provided to pull the lock member in the unlock direction.
The other end of this unlocking member is
Moving along a diagonal slot that rises away from the raft
And a handle is provided at the other end of the unlocking member.
So, by pulling the handle by hand along the long hole,
An unlock operation can be performed. Lock member lock
By canceling the braking action, the motorcycle will lose its original weight
Instantly return to the ground contact state. When the handle is pulled up to the upper end of the slot,
That is, immediately after the motorcycle returns to the ground contact state,
By pulling the hand holding the handle backward, Jackis
The entire tando can be retracted. Jack up
Can be removed from the motorcycle body
You. As described above, when the handle is pulled by hand,
Operation alone to unlock the lock member and
The reverse operation of the entire stand is substantially “1” in this order.
Operation ". During maintenance and inspection work
Lifting and lowering work of the motorcycle can be performed more quickly.
Therefore, the time for maintenance and inspection work can be reduced. Embodiments of the present invention will be described with reference to the accompanying drawings.
This will be described below. Note that "before", "after",
“Left”, “Right”, “Top” and “Bottom” are motorcycle jacks.
Follow the direction as seen from the operator of the key stand. Also, the drawing
Look at the direction of the sign. FIGS. 1 (a) and 1 (b) show an automatic automatic transmission according to the present invention.
The jack that is jacked up by the jack stand for wheeled vehicles
It is a block diagram of a motorcycle, (a) is the left of the motorcycle 10
(B) shows a cross-sectional structure taken along the line bb of (a).
Show. [0015] As shown in FIG.
Front on head pipe 12 of body frame (body) 11
The fork 13 is rotatably mounted on the front fork 1
3, the front wheel 14 is rotatably mounted on the vehicle body frame 11.
Move the rear arm 16 up and down with the pivot shaft 15 at the lower rear.
Rear arm 16 at the rear end of the rear arm 16
Is rotatably mounted on the rear lower end of the body frame 11.
A vehicle for endurance racing provided with a jack-up section 30.
You. In the figure, 21 is an engine, 22 is a chain, and 23 is a machine.
Hula, 24 is the handlebar, 25 is the front cowl
You. [0016] As shown in FIG.
0 is attached to the body frame 11 by the pivot shaft 15.
Left and right brackets 31 and 32 and left and right brackets 3
Guide pipe 33 spanned between 1 and 32
A cone-shaped insertion guide tube 34 provided at the end of the ket 31
Consists of The insertion guide tube 34 opens to the left side of the vehicle body.
You. The through hole 31a of the left bracket 31 and the right bracket
Through hole 32a, guide pipe 33, and insertion guide
The id tubes 34 are arranged concentrically with each other. Insertion guide tube 3
Remove the jack-up shaft described later from 4
Can be. The jack-up portion 30 is connected to the front of the vehicle body.
It is optional to provide it on the axle 18 of the rear wheel 17 as well. FIG. 2 is a jack for a motorcycle according to the present invention.
It is a left side view of the stand, and this jack for a motorcycle is shown.
Stand 40 (hereinafter simply referred to as “jack stand 40”)
To tell. ) Is about 50-60cm in height and about 10kg in weight
Small and lightweight mobile jack-up device
And the parallel link 50 and the elevating frame
71, jack-up shaft 74, lifting lever 8
1, equipped with a lock mechanism 90 and a lock release mechanism 100
You. The stand body 41 has left and right wheels 4 at its front.
5, 45, with rear raised from floor FL
It is a member that can be run with. For details, stand body 4
1 is a base that is elongated and almost horizontal in the front and rear (left and right in this figure)
Standing on the upper rear part of the frame 42 and the base frame 42
Between the support 43 and the base frame 42 and the support 43
A stay 44 that extends over the corner and a base frame 42
Left and right wheels 4 rotatably mounted on the front end (left side of the figure)
5, 45. The jack-up shaft 74 is an imaginary line.
Removably fits into the jack-up portion 30 indicated by.
It is a horizontal and elongated round bar with a tapered tip.
You. According to such a jack stand 40, a horizontal
The jack-up shaft 74 is connected to the body of the motorcycle 10.
11, ie, the jack-up portion 30 indicated by an imaginary line
It is detachably inserted into the
The wheel 10 can be raised. Below, Jacks
The stand 40 will be described in detail with reference to FIG. Wheel 4
The positions of 5, 45 are held by the jack-up shaft 74.
The front of the weight center G of the raised motorcycle 10 (see FIG.
(To the left). FIG. 3 shows a jack for a motorcycle according to the present invention.
FIG. 2 is a sectional view of a main portion of the stand, showing a jack stand 40.
The cross section is shown at the center of the machine width. The lifting frame 71 is supported by the support 4
It is attached to the upper part of 3 via a parallel link 50 so that it can be moved up and down.
A vertically elongated member which is provided in front of
43 will be arranged in parallel. This lifting frame
Arm 71 has a shaft 73 at the front with a pin 73
Mounted so that it can swing up and down.
The base end of the shaft 74 for bolting is bolted
It is. 75 is the level of the jack-up shaft 74
Adjustment bolt. In this way, the lifting
A jack-up shaft 74 forward from the frame 71
Can be extended almost horizontally. The lifting lever 81 is used to move the lifting frame 71
Long operating member for raising and lowering by "Leverage principle"
It is. The lifting lever 81 is provided at the middle portion in the longitudinal direction.
Attach to the support column 43 with the connecting pin 55 so that it can swing up and down.
And extend forward from the middle to connect the front end to the connecting pin 56.
To be able to swing up and down at the bottom of the lifting frame 71
Extend from the middle part to the back, and
(The first handle 82). Here, the parallel link 50 will be described.
You. The parallel link 50 has four links 51 to 54
And a four-bar link combining four connecting pins 55-58
Yes, and can be vertically displaced. Four links 51-54
To the first link 51 and the second link 5 clockwise from below.
2, the third link 53 and the fourth link 54. First phosphorus
５１51, from the middle of the lifting lever 81
The front that extends forward doubles. About the second link 52
The elevating frame 71 also functions. About the fourth link 54
The upper part of the column 43 also serves as the upper part. Further, four connecting pins 55 to 58 are provided.
A connecting pin for connecting the fourth link 54 and the first link 51
To the first connecting pin 55, the first link 51 and the second link 52.
The second connecting pin 56 and the second link 52
The connecting pin connecting the third link 53 to the third link 53
7. A connecting pin connecting the third link 53 and the fourth link 54
Is referred to as a fourth connecting pin 58. These four connecting pins 55
-58 are ball bearings to reduce frictional resistance
Link via rolling bearings 61-64
Connect 51-54. As a result, the operation of the parallel link 50
Very smooth. Next, the lock mechanism 90 will be described.
The lock mechanism 90 includes a lifting lever 81 at a raised position.
Between the support column 43 and the lifting lever 81 to hold
Lock member 91 to be passed between, and this lock member 91
A resilient member 92 resilient to the lock side is provided. For more information,
The lifting lever 81 extends in the machine width direction (the front and back direction in the figure).
Locking bar 83. Lock bar 83 is round bar
It is. On the other hand, the upper end of the lock member 91 has a pin (fourth link).
The upper end of the support column 43 via the rolling bearing 93 with the connecting pin 58)
Attached to the part, it can swing back and forth
Member having a locking step 91a at the lower end.
You. In the locking step portion 91a, the lifting lever 81 is raised.
When it is in the position, it is hung on the lock bar 83
is there. The resilient member 92 is a tension spring. Next, the lock release mechanism 100 will be described.
I do. This lock release mechanism 100
Unlocking operation and reverse operation of the entire jack stand 40
It is a mechanism that performs the operation. Specifically, the lock release mechanism 10
0 is a bracket 1 extending rearward and upward from the upper end of the column 43
01, an elongated hole 102 formed in the bracket 101,
Prepared at the rear end of racket 101 and on extension of slot 102
Handle (second handle 103), locking member 91
And an unlocking member 110 for pulling in the unlocking direction.
You. The long hole 102 is formed from the jack-up shaft 74.
An oblique hole that rises away, that is, a hole that is long at the rear
It is. The unlocking member 110 is a swing member 1
11 and a combination structure of the tension member 121. Swins
The locking member 111 is located forward of the locking member 91 (left side in the figure).
Side), and the upper end is pin 112 at the upper end of the support 43.
By being attached, it is a member that can swing back and forth.
And a release projection 113 and a connection arm 114 at the lower end.
It is formed integrally. The release projection 113 is locked
It is adjacent to the front surface 91b of the member 91 with a certain gap.
The connecting arm 114 has a pin 1 at one end of the pulling member 121.
At 15 it is connected so that it can swing back and forth. The pulling member 121 has a handle (first
3 handle 122), and the third handle 122
It is fitted into the long hole 102 so as to be slidable in the longitudinal direction of the hole.
It is. In this manner, other than the unlocking member 110
The end is lifted away from the jack-up shaft 74
To move along the oblique long hole 102,
A third handle 122 is provided at the other end of the unlocking member 110.
Can be opened. The column 43 has an upper stopper 131 at the upper end.
, And the stay 44 includes a lower stopper 132. Upper
The topper 131 is moved upward when the lifting frame 71 is raised.
This is a member for determining the limit position. The lower stopper 132
A part that determines the lower limit position when the descending frame 71 descends
Material. The upper stopper 131 and the lower stopper 13
The position of the stopper 2 is adjustable. FIG. 4 shows a jack for a motorcycle according to the present invention.
FIG. 5 is a perspective view of a main part of the stand, showing a lifting / lowering
Frame 71, lifting lever 81, lock mechanism 90, and
2 shows the relationship of the lock release mechanism 100. Prop 43 is the width of the machine
A pair of right and left standing at a certain interval in the direction (left and right direction)
The column portions 43a, 43a are combined, and these column portions 43a,
By connecting the upper ends of 43a, one pillar member is formed.
You. Elevating frame 71 and jack-up shaft 7
4 (see FIG. 3) is arranged at the center of the machine width. The lifting levers 81, 81 are located on the left
A pair of left and right sides are provided so as to sandwich the right side.
For locking between these left and right lifting levers 81, 81.
The bar 83 was hung. Lift levers 81, 81 are left and right
Since there is a pair, the third link 5 in the parallel link 50
A pair of left and right 3 and 53 are also provided. FIG. 5 is a sectional view taken along line 5-5 of FIG.
Lifting levers are provided on both left and right sides of the column 43 provided at the center CL.
81, 81 are rolling bearings 61, 6 by the first connecting pin 55.
1 and attached to the front ends of the lifting levers 81, 81,
The lifting frame 71 is rolled by the second connecting pin 56 to the rolling bearing 6.
Attached via 2, 62, between lifting levers 81, 81
And the both ends of the locking bar 83 to bearing bolts 84, 84.
This indicates that the mounting is performed via the rolling bearings 85, 85. The locking bar 83 is connected to a ball bearing or the like.
Rotatably supported via rolling bearings 85, 85
To minimize frictional resistance when the locking bar 83 rotates.
Can be reduced. As a result, the locking bar 83
Can rotate very smoothly. The first connecting pin 55 is a support
43 is a member integrally provided by welding. Second connecting pin 5
Reference numeral 6 denotes a member integrally provided on the lifting frame 71 by welding.
You. The first handle 82 is rotatably mounted with a pin 86.
It is a digit. 87 is a stay, 88 and 89 are stop bolts
It is. FIG. 6 is a sectional view taken along line 6-6 of FIG.
Left and right brackets 101, 101 extending rearward from 43
Are provided in the machine width direction.
The third handle 122 penetrates these long holes 102, 102
Then, stop bolts 116,
Swing the left and right pulling members 121, 121 with 116
Indicates that it was linked to Noh. The second handle 103 is a pin
At 117, it is rotatably mounted. Further, in this figure, the swing member 111
Is a rolling bearing 1 such as a needle bearing with a pin 112.
18 and 118, and attached to the support column 43.
At the left and right sides of the release projection 113.
Connecting arms 114, 114 are provided.
A pulling portion is attached to each end of the
That one end of each of the members 121, 121 is swingably connected.
And 119 and 119 are stop bolts. Second c
Maximum distance from handle 103 to third handle 122
The thumb Tu with one hand Ha to the second handle 103
When hooked, hang another finger Fi on the third handle 122
Can be pulled toward the second handle 103 side
Is set to Next, the jack stand 40 having the above structure
The operation will be described with reference to FIGS. Figure 7 is a book
Operational diagram of the jack stand for motorcycle according to the invention (so
1) The lifting frame 71 and jack-up
Shows that the utility shaft 74 is in the lowered position. Lifting
Arm 71 hits the lower stopper 132,
Does not fall. At this time, the lifting lever 81
Since the rear end is in the raised position, the locking bar 83
It is in a high position (high position). For this reason, the lock member 91
The front surface 91b, which is higher than the locking step portion 91a,
As shown in FIG. On the other hand, the swing member 111 is
The release projection 113 is lowered, and the front surface 91 of the lock member 91 is lowered.
away from b. At this time, the swing member 111
Since the tension member 121 is pulled forward and downward by the weight,
The third handle 122 is brought into contact with the lower end of the long hole 102
is there. The first handle 82 is pressed down by hand.
As a result, the lifting lever 81 is switched clockwise in the drawing.
(Arrow). As a result, via the second connecting pin 56
The lifting frame 71 can be raised using the leverage principle.
Yes (arrow). When the lifting lever 81 is swiveled clockwise in FIG.
The locking bar 83 is connected to the first connecting pin
The vehicle turns on a turning locus R <b> 1 centered at 55. Lock section
The material 91 is moved toward the locking bar 83 by the resilient member 92.
Because it is resilient, the fourth connecting pin 55 higher than the first connecting pin 55
In response to the rotation of the locking bar 83 around the connecting pin 58,
Swing clockwise (arrow). This result
The results are shown in FIG. FIGS. 8 (a) and 8 (b) show an automatic automatic transmission according to the present invention.
It is an operation | movement figure (the 2) of the jack stand for wheeled vehicles.
(A) shows the turning trajectory R1 of the locking bar 83 and the locking trajectory R1.
This indicates that the turning locus R2 of the step portion 91a matches.
At this point, the locking step 83a is
Is caught. The locking step 83 is provided on the locking bar 83.
a when the lifting frame 71 is in the raised position.
Coincides with or almost coincides with the state of rising. Lock bar
Since the locking step 91a is hung on the 83,
Even if you release your hand from the first handle 82 at
The bar 81 maintains the lowered position shown by the solid line. As shown in FIG.
The elevating frame 71 moves to a predetermined ascending position while moving in parallel.
To rise. Therefore, the jack-up shaft 74 also
Ascend to a predetermined ascent position while maintaining a substantially horizontal state
You. Then, the thumb Tu of the hand Ha as shown in FIG.
On the second handle 103 and the other finger Fi in the third hand.
The third handle 1
22 is pulled toward the second handle 103 (arrow).
Thus, the elongated hole 1 extending rearward and upward as shown in FIG.
Pulling up the third handle 122 using 02 as a guide
Can be. The third handle 122 is inserted into the oblique long hole 102.
As a result, the tension member 121 is moved in the same direction.
To swing the swing member 111 counterclockwise in the figure.
Let As a result, the release protrusion 113 of the swing member 111
By kicking up the front surface 91b of the lock member 91,
(Arrow), swing the lock member 91 counterclockwise in the figure.
(Arrow). The lock member 91 is
By swinging counterclockwise in the figure against the elasticity,
The lock step portion 91a comes off the lock bar 83. The locking bar 83 is a rolling bearing.
85, 85 (see FIG. 5) are rotatably supported
Therefore, frictional resistance is extremely small, and rotation is easy. Subordinate
Therefore, the locking step portion 91 a is the elastic force of the elastic member 92.
Lock bar 83 with a small swing force to resist
Come off. FIGS. 9 (a) and 9 (b) show an automatic automatic transmission according to the present invention.
It is a function figure (the 3) of the jack stand for wheels.
(A), the third handle 122 contacts the upper end of the long hole 102.
In addition, the locking step portion 91a is
It shows the state at the time of departure from. The lifting frame 71 is its own weight
To start descending. The lifting frame 71 connects the second connecting pin 56
Swing the lift lever 81 counterclockwise in the figure
(Arrow). As a result, the lifting frame 71 and the jaw
The shaft 74 for the lock-up is the original descent indicated by the imaginary line.
Automatically descends to the position. Lift lever 81 is also imaginary
Automatically returns to the original position indicated by. On the other hand, the third handle 122 is
When hitting the upper end, the second and third hands as shown in (b)
Hands Ha holding hands 103 and 122
Draw (arrow). In this way, the jack stand 4
0 can be retracted in the white arrow direction. Next, an example of using the jack stand 40 will be described.
1 and FIG. Figure 2 is for jack-up
Indicates that the shaft 74 is in the lowered position. In the lowered position
The height of a jack-up shaft 74 is grounded
The height of the insertion guide tube 34 of the motorcycle 10 in a standing state.
And almost the same. Maintenance and points of the motorcycle 10, such as wheel replacement
The inspection work is performed in the following procedure. First, the jack in the state of FIG.
The stand 40 is positioned on the side of the motorcycle 10 in the ground contact state.
Forward to the surface (moving to the left in the figure). Soshi
And the jack-up shaft 74 of the motorcycle 10
Insert it into the car body 11. That is, the jack-up shuff
By inserting the guide 74 into the insertion guide tube 34,
As shown by the imaginary line in FIG.
It is set on the key-up unit 30. Next, the lifting lever 81 is swing-operated by hand.
And a jack-up
By raising the shaft 74, the motorcycle 10 is raised.
Let The jack-up shaft 74 moves to the raised position.
When moved, the locking member 91 locks the locking bar 83.
Click. For this reason, let go of the lifting lever 81
The jack-up shaft 74 and the motorcycle 10
Stops in the raised position. In this state, maintenance of the motorcycle 10 is performed.
・ Perform inspection work (wheel replacement, etc.). When the maintenance and inspection work is completed, the third hand
Hand 122 along the long hole 102 by hand.
Then, a lock release operation is performed (first release operation). Lock
Of the lock member 91 on the bar 83 is released
become. Due to the weight of the lifting frame 71 and the motorcycle 10
Thus, the jack-up shaft 74 descends. this
As a result, the motorcycle 10 instantaneously returns to the original ground contact state. Insert the third handle 122 into the upper end of the slot 102.
When the motorcycle is pulled up, that is, when the motorcycle 10 is
Immediately after returning to the state, the hand holding the third handle 122
Vigorously to the rear (right side in FIG. 2) (second release operation).
Work). As a result, the entire jack stand 40 retreats.
You. Therefore, the jack-up shaft 74 is
It can be removed from the body 11 of the car 10. with this,
Complete the work. As is clear from the above description, the third hand
By simply pulling the dollar 122 by hand, the lock
Unlocking operation (first unlocking operation) of the material 91 and the jack
The reverse operation (second release operation) of the entire stand 40 is
Can be performed substantially in one operation. Maintenance·
Speed up and down the motorcycle 10 during inspection work
Can be done quickly. Therefore, the time for maintenance and inspection work
Can be shortened. According to the present invention, the following effects are exhibited by the above configuration.
I do. Claim 1 includes a shaft for jacking up.
When the lifting frame is in the raised position, move the lifting lever
Lock it between the support and the lifting lever
Lock member, and swing the upper end of this lock member
Resilient part that can be mounted as possible and the lock member springs to the lock side
Unlocking part that pulls the material and lock member in the unlocking direction
Material, and the other end of this unlocking member is
Along the oblique long hole that rises away from the
Move the handle and the other end of the unlocking member
The handle can be pulled up by hand along the long hole.
Thus, the lock release operation can be performed. Lock member
By releasing the lock function of the motorcycle, the motorcycle
Instantaneously returns to the original grounding state. When the handle is pulled up to the upper end of the long hole,
That is, immediately after the motorcycle returns to the ground contact state,
By pulling the hand holding the handle backward, Jackis
The entire tando can be retracted. Jack up
Can be removed from the motorcycle body
You. As described above, when pulling the handle by hand,
Operation alone to unlock the lock member and
The reverse operation of the entire stand is substantially “1” in this order.
Operation ". During maintenance and inspection work
Lifting and lowering work of the motorcycle can be performed more quickly.
Therefore, the time for maintenance and inspection work can be reduced. Further, the motorcycle can be raised only by manual operation.
Because it can be lowered,
Expensive drive mechanism and power source are unnecessary, and there is no power source.
You can freely use the jack stands for motorcycles even in
Can be used.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a motorcycle jacked up by a motorcycle jack stand according to the present invention. FIG. 2 is a left side view of a motorcycle jack stand according to the present invention. FIG. 4 is a sectional view of a main part of a jack stand for a motorcycle according to the present invention. FIG. 4 is a perspective view of a main part of a jack stand for a motorcycle according to the present invention. FIG. 7 is a sectional view taken along line 6-6 of FIG. 7. FIG. 7 is an operation view of the motorcycle jack stand according to the present invention (part 1). FIG. 8 is an operation view of the motorcycle jack stand according to the present invention (part 2). 9: Action diagram of motorcycle jack stand according to the present invention (No. 3) [Description of References] 10 ... Motorcycle, 11 ... Car body, 30 ... Jack-up portion, 40 ... Motorcycle jack stand, 42 ... Base Frame, 43 ... strut, 50 ... parallel link, 58 ...
Pin (fourth connecting pin), 71: lifting frame, 74: jack-up shaft, 81: lifting lever, 83 ...
Lock bar, 91: Lock member, 91a: Lock step, 92: Resilient member, 102: Slot, 110: Lock release member, 122: Handle (third handle), Ha ...
hand.

Claims (1)

Claims: 1. A base frame, a support standing on the base frame, an elevating frame movably mounted on the support via a parallel link, and extending substantially horizontally from the elevating frame. A jack-up shaft, a lifting lever that raises the lifting frame by leverage principle, and a lock member that passes between the support and the lifting lever to hold the lifting lever at the lifting position. In the jack stand for a motorcycle that can insert the shaft for jack-up into the body of the motorcycle and raise the motorcycle by the action of a raising lever, the upper end of the lock member is attached to the support by a pin. The lock member can be swung, and the lock member is unlocked and the resilient member that springs the lock member toward the lock side. A lock release member that pulls in the direction of the lock, and moves the other end of the lock release member along an oblique long hole that rises while separating from the jack-up shaft, and a handle is provided at the other end of the lock release member. A jack stand for a motorcycle, characterized in that a lock release operation and a reverse operation of the entire jack stand can be performed in this order by pulling up the handle.