JP2537275B2 - Motorcycle assembly method and device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for assembling a two-wheeled vehicle, which is performed while adjusting an initial load of a rear suspension and a tension of a drive chain.

(Prior Art) To assemble a chain drive type motorcycle, a swing arm (rear fork) is swingably attached to a body frame, and a rear suspension and a chain are temporarily fixed between the body frame and the swing arm. Is visually adjusted by the operator using the marking formed on the swing arm as a mark, and the upper and lower ends of the rear suspension are generally fixed to the frame and the swing arm from a free state.

(Problems to be Solved by the Invention) When the chain and the rear suspension are fixed by the above-mentioned conventional means, the tension of the chain is visually adjusted, and therefore the center of the vehicle body is likely to fall and misalignment is likely to occur. Regarding the rear suspension, the characteristic value of the rear suspension may be different from the set value when the vehicle is empty or riding.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a fixing member for positioning and holding a pivot portion of a vehicle body frame in the middle of an assembly line of a motorcycle, and the fixing member swings or otherwise A machine base that relatively moves in a high direction was attached, and a machine frame having a socket portion for supporting an axle of a rear wheel was engaged with the machine base so as to be movable in the vehicle length direction.

(Operation) With the rear wheel axle held in the socket of the machine frame, the cylinder suspension drives the machine frame rearward in the vehicle length direction and the machine frame upward in the vehicle height direction to provide rear suspension. The amount of displacement in the 1G state (when the vehicle is empty and stationary) is applied, and a predetermined tension is applied to the chain.

(Example) Below, the Example of this invention is described based on an accompanying drawing.

FIG. 1 is a front view of a two-wheeled vehicle assembling apparatus according to the present invention. A fixing member 10 for positioning and holding a body frame 2 being conveyed is provided at the center of a base 1 and the fixing member is provided.
Place the mounting table 20 such as the engine in front of the
The adjusting mechanism 30 is arranged behind the base 1, and the drive portion 31 of the adjusting mechanism 30 is provided below the base 1.

As shown in FIG. 2 which is an enlarged view of the fixing member 10 in the AA direction in FIG. 1 and in FIG. 3 which is an enlarged view in the BB direction of FIG. Erected this prop 1
A fixing mechanism 12 is provided at the upper end of 1. Fixing mechanism 12 is a pillar 1
1 A case 13 that moves in the vehicle width direction by driving a cylinder unit is provided at the upper end, and a shaft 14 is penetrated into the case 13, and an inner end of the shaft 14 engages with a pivot part 2a of a vehicle body.
14a is formed, a cylindrical body 15 is rotatably fitted on the outer periphery of the intermediate portion of the shaft 14, and a groove 15a in which the notch 16 provided in the case 13 is engaged with the outer periphery of the cylindrical body 15 and a regulating portion of the case 13. A large diameter portion 15b with which 13a abuts is formed.

In order to position and hold the pivot portion 2a of the vehicle body frame 2 by the fixing member 10, first, as shown in FIG. 4, the case 13 is moved outward in the vehicle width direction by the cylinder unit. In this state, the contact state between the restriction portion 13a of the case 13 and the large diameter portion 15b of the cylindrical body 15 is released, and the shaft 14 is supported in the case 13 with some play. In this state, the shaft 14 is made to project inward in the vehicle width direction so that the engaging portion 14a at the inner end of the shaft 14
Is fitted into the pivot part 2a. Here, even if the positions of the pivot part 2a and the engaging part 14a are slightly deviated from each other, the shaft 14 is held in the case 13 with a play, so that the engaging part 14a reliably engages with the pivot part 2a. After that, the case 13 is moved inward in the vehicle width direction by the operation of the cylinder unit.
Then, as shown in FIG. 3, the case 1 is attached to the large diameter portion 15b of the tubular body 15.
The restriction portion 13a of 3 abuts on the shaft 14 and the pivot portion 2a supported by the shaft 14, that is, the vehicle body frame 2 follows the case 13, and the vehicle body frame 2 is positioned and held relative to the fixed member 10 in the end. It will be.

On the other hand, the adjusting mechanism 30 is an enlarged view of the main part of FIG.
6 and FIG. 6, which is a view taken in the direction of arrows CC in FIG. 5, and FIG. 7, which is an enlarged view of the main parts of FIG. 1, and FIG. 8 which is a view in the direction D of FIG. As described above, the machine base 40 and the machine frame 50 are included.

An upper end of the machine base 40 is pivotally attached to the column 11 of the fixing member 10 via a shaft 41, and a cylinder unit 32 provided in the drive unit 31.
The machine base 40 swings about the shaft 41 in the vertical plane, that is, in the vehicle height direction by the arm 33 operated by. Further, a stopper 42 penetrating the support column 11 of the fixing member 10 is attached to the lower portion of the machine base 40, and the upper limit of swinging of the machine base 40 is restricted by the stopper 42. A spring 43 for cushioning the return of the platform 40 is provided, and a stopper 44 when the machine platform 40 is returned is attached to the lower end of the column 11.
Further, a rail 45 extends rearward from an intermediate portion of the machine base 40, and the machine frame 50 is engaged with the rail 45.

As shown in FIGS. 5 and 6, the machine frame 50 is provided with a positioning member 53 for positioning the rear wheel 3 from the left and right at the lower part of a pair of plates 51, 51 standing upright, and on the upper surface of the plate 51. A gripping mechanism 52 is provided. As shown in FIG. 5, the gripping mechanism 52 includes a receiving member 54 that engages with a pin 51a implanted in the plate 51, and a claw member 55 that opens and closes with respect to the receiving member 54.
The receiving member 54 is pressed and fixed to the upper surface of the plate 51 by the locking piece 56, and can be removed by operating the lever 57, and the claw member 55 can be closed.
A holding portion 58 is formed between 55 and the receiving member 54, and a socket 59 is loaded in the holding portion 58 and fixed by a lever 60. It should be noted that when changing the model, only the gripping mechanism 52 is replaced.

Here, the socket 59 holds the end of the shaft 4 of the rear wheel 3 of the motorcycle, and the shaft 4 is an adjuster portion provided at the rear of the swing arm (rear fork) 5 whose front end is pivotally attached to the body frame 2. 6 is rotatably held and a shaft 4 is fitted with a sprocket 8 on which a drive chain 7 is stretched. Then, by rotating the socket 59 using the jig 61 as shown in FIG. 2, the position of the shaft 4 is fixed in the vehicle length direction.

Further, the machine frame 50 is a cylinder unit 34 provided in the drive unit 31.
By the arm 35 operated by
Cylinder units 32 and 34, which are moved in the left-right direction in the figure and are arranged in the drive unit 31, are installed on a table 36 whose height is adjustable as shown in FIGS. 7 and 8.

A method of assembling a two-wheeled vehicle using the assembling apparatus having the above structure will be described below.

First, the front end of the swing arm 5 is pivotally attached to the vehicle body frame 2 so as to be swingable, the upper end of the rear suspension 9 is temporarily fixed to the vehicle body frame 2 side, and the lower end is temporarily fixed to the swing arm 5 side. The directional position is not fixed, and the vehicle body frame 2 is conveyed to the position of the assembling apparatus of the present invention in such a state.

Then, the vehicle body frame 2 is positioned and held on the fixing device 10 via the pivot portion 2a by the fixing mechanism 12 provided on the fixing device 10.

On the other hand, with respect to the axle 4, both ends thereof are held in sockets 59, 59, and the sockets 59, 59 are held by the machine frame 50 via the gripping mechanism 52.
Fixed to the side.

After that, the cylinder units 32 and 34 are driven, and the machine base 4
The 0 is swung upward around the shaft 41, and the machine frame 50 is moved rearward along the rail 45. Here, the swing amount of the machine base 40 and the movement amount of the machine frame 50 are forces that give the rear suspension 9 a displacement amount in the 1G state and give a predetermined tension to the drive chain 7.

In this way, the rear suspension 9 and the chain 7
When the adjustment is completed, the upper and lower ends of the rear suspension 9 are fixed to the vehicle body frame 2 and the swing arm 5, and the position of the axle 4 in the vehicle length direction is fixed by the adjuster portion 6.

(Effects of the Invention) As described above, according to the present invention, when assembling a motorcycle, the initial load of the rear suspension and the tension of the chain can be adjusted simultaneously and accurately by one device. Assembly work is greatly improved.

[Brief description of drawings]

FIG. 1 is a front view of a motorcycle assembly apparatus according to the present invention, and FIG.
The figure is an enlarged view in the direction AA of FIG. 1, and FIG. 3 is the view B- of FIG.
B direction enlarged view, FIG. 4 is a view showing the action of the fixing mechanism, FIG.
FIG. 7 is an enlarged view of an essential part of FIG. 1, FIG. 6 is an arrow view of FIG. 5 taken along the direction CC, FIG. 7 is an enlarged view of an essential part of FIG. 1, and FIG. 8 is a D direction of FIG. FIG. In the drawings, 2 is a body frame, 2a is a pivot part, 3 is a rear wheel, 4 is a rear wheel axle, 5 is a swing arm, 7 is a chain, 9 is a rear suspension, 10 is a fixing member, and 32 and 34 are cylinders. Unit, 40 is machine base, 45 is rail, 50 is machine frame,
52 is a gripping mechanism, and 59 is a socket.

Claims (2)

(57) [Claims] 1. A swing arm is swingably attached to a body frame, the body frame is fixed to the swing arm with one end of a rear suspension and axles of rear wheels temporarily fixed, and then the swing arm is swung upward. The two-wheeled vehicle characterized in that the rear suspension and the axle are fastened and fixed in this state by moving the vehicle to give a displacement amount of 1G to the rear suspension and pushing the axle backward to give a predetermined tension to the drive chain. Assembly method. 2. An assembly device for a two-wheeled vehicle in which a rear suspension in a temporarily fixed state and a rear wheel axle are fastened and fixed to a swing arm, the assembly device comprising a pivot portion of a vehicle body frame for swingably supporting the swing arm. A fixing member for positioning and holding, a machine base mounted movably in the vehicle height direction relative to the fixed member, and a socket for movably engaging the machine base in the vehicle length direction and for axle support. An assembly device for a two-wheeled vehicle, which is composed of a machine frame having parts.