JPH06239280A - Bicycle assembly stand - Google Patents

Abstract

PURPOSE:To adjust the height and position of a stand, depending upon a worker' s height and assembly position by making cylindrical bodies A and B slidable, fitting the body B with a gas spring, and providing an axially slidable piston and a foot pedal linked to the piston in such a way as capable of vertically moving the body B. CONSTITUTION:A post 85 erected on a stand 8 is kept upright by stepping a foot pedal D. At this stage, the stepping of the pedal D is stopped and the post 85, is fixed. An unpacked 70% complete bicycle is kept upside down and the post 85 of the stand 8 is inserted in a stand pipe 13 where a seat post 12 is inserted. Also, another foot pedal C is stepped down and the vertical position of the bicycle is adjusted to a desired level for allowing an easy assembly work. At this stage, the stepping of the pedal C is stopped. As a result, the unpacked bicycle is kept upside down with other components bundled to a frame or a rear wheel with a cord, and fixed at desired height. At this stage, a front wheel, for example, is released from the cord and assembled into a front fork.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle assembly stand, and more particularly to a bicycle assembly stand whose height and position can be adjusted according to the height and assembly site of an operator.

[0002]

2. Description of the Related Art Bicycles are usually assembled in a factory for about 7 minutes, housed in a packing material such as a cardboard, and transported to a destination together with other parts. Assembled as a finished product at shops. At the time of this assembling work, a clamp part that normally sandwiches the upper pipe of the bicycle and a bicycle assembly stand that allows the clamp part to move vertically have been used. And usually,
The front and rear hokes are assembled to the frame, and the rear wheels are assembled and packaged and transported. The 7-minute bicycle is fixed on a stand, and the handle, pedals, The front wheels will be attached, and various adjustments will be made.

However, there is a shaft type or a type equipped with an elevating device by a motor as means for moving the stand in the vertical direction, but in the shaft type, the whole stand is small and lightweight and easy to move. Yes, the price is cheap. However, from the operator's point of view, it requires a considerable amount of force when setting the assembly parts and removing the completed vehicle, and because it does not have an automatic lifting device, it is difficult to obtain the optimum working height. , The worker is likely to work on his back stretched, his middle waist or squatting down, and back pain and muscle aches are inevitable.

On the other hand, in the assembly stand equipped with the lifting device using a motor as a power source, which is described in Japanese Utility Model Publication No. 54-92549, the drawbacks of the shaft type stand are improved. However, since it requires a power source (power source), it is difficult to move this stand at any time to perform work, especially when the bicycle wheels come into contact with the base during the lowering of the lifting device. , It is necessary to turn off the switch directly, and if this moment is removed, the bicycle will be distorted, or extra force will be applied to the pipe, etc., causing deformation. Further, there is a drawback that the price is higher than that of the shaft type.

Further, in all of these conventional techniques, the upper pipe or the vertical pipe of the bicycle is gripped by, for example, a toggle clamp. Therefore, the bicycle is circumferentially centered around the axis of the pipe. There was a problem in terms of workability as it was not possible to shake itself.

Further, in these conventional techniques, various parts fastened to the frame or the rear wheel with a string or the like are untied, and then the frame is used for clamping. Therefore, when unraveling, various parts are put on the floor, for example, in a disjointed manner, and there is a problem in that the parts are searched for during assembly, or when the parts are picked up, they are liable.

[0007] It is also practiced to rotate the clamp, and tilt and rotate the bicycle accordingly to move the work position. However, if there is a gap between the clamp and the pipe sandwiched between them, It also has the drawback that the bicycle slips down in the longitudinal direction of the pipe and the paint layer on the pipe surface is damaged. Therefore, cloth or rubber sheet is also wound around the pipe to be clamped.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional techniques and aims to improve the drawbacks thereof. In particular, the present invention is fixed by a clamp without requiring a power source such as a power source. The present invention provides a bicycle assembly stand for raising and lowering a bicycle. Further, it is possible to assemble a 7-minute assembled bicycle in which various parts are fixed by a string as it is by fixing it to the stand.

[0009]

The summary of the present invention is as follows.
A cylindrical body A that is upright on the base body, a cylindrical body B that is fitted to the cylindrical body A, a beam portion that is fixed to the head of the cylindrical body B and extends in the lateral direction, and a pedestal that is rotatable on the beam portion. In the bicycle assembly stand having the pedestal and the clamp portion, the cylinder A and the cylinder B can be slid, and the cylinder B can be slid.
Is a piston that is equipped with a gas spring and slides in the axial direction, a foot pedal C that is connected to the piston to enable the cylinder B to move up and down, and a wire that controls the rotation of a pedestal provided in the beam portion. A footrest pedal D connected to −, and a bicycle assembly stand characterized in that a post capable of being relatively fitted between the beam portion or the pedestal and a standing pipe is erected, and in particular, The present invention relates to a bicycle assembly stand in which a post is erected by shifting its installation position with respect to a clamp portion on a pedestal. And, more specifically, the cylinder B is preferably a gas spring with a hydraulic lock mechanism.

[0010]

The present invention is a bicycle assembly stand having the above-mentioned characteristic structure, wherein the space between the cylinder A and the cylinder B is relatively slidable in the vertical direction via a plurality of bearings. ing. The cylinder B is preferably provided with a gas spring with a hydraulic lock mechanism, and the piston of the spring connected to the foot pedal C causes the cylinder B to move relative to the pressure of the gas spring when the pedal C is depressed. It is locked when the pedal C is stopped and the pedal C is stopped. In this way, the top and bottom of the barrel B move steplessly and are locked at any position. Further, when the cylinder B is lowered, when the pedal C is stepped on and pushed down by hand from above, the cylinder C is also lowered steplessly and is locked at an arbitrary position. Therefore, the bicycle fixed to the beam clamp or the post will move up and down to any position.
Assembling work can be done without difficulty. Either of the cylindrical body A and the cylindrical body B may be inserted inside one of them.

On the other hand, the pedestal provided on the beam portion is rotatably supported between the pedestal portion and the beam portion, and the face plate on the pedestal side and the pin on the beam portion side provide a predetermined distance to the face plate. The engagement and disengagement of the pin hole formed around the shaft with the pin allows the pedestal to rotate freely and is locked. Therefore, the position of the bicycle fixed to the clamp portion of the pedestal is changed as the pedestal is rotated, and the bicycle can be tilt-rotated to the position where the work is most easy. This pin is connected and disconnected with the foot pedal D. When the pedal D is stepped on, the pin comes out of the pin hole, and when the foot is removed from the pedal D, the pin projects in the direction of the face plate, and the pin fits in the desired pin hole. Will be combined.

In particular, in the initial stage of assembly, the post fixed to the beam portion or provided on the pedestal is directed upward, and the standing pipe into which the sheet post is inserted is fitted into the post. In this state, the bicycle is turned upside down and fixed, and in this state, the necessary parts, in this case, the front wheels are unraveled and attached to the front forks. As described above, in the present invention, it is possible to eliminate the waste of unraveling all the parts at the time of assembly.

According to the present invention, the bicycle fixed to the clamp portion or the post is supported by the hand, that is, the bicycle is moved up and down to a position where it is easy to assemble only by manipulating the foot without holding the hand than the bicycle. Or, it is possible to provide a predetermined inclination. Of course,
In this vertical movement or rotation, the power source is not required, and therefore the stand of the present invention can be moved to any position and work can be performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bicycle assembly stand according to the present invention will be described below in more detail with reference to the drawings. FIG. 1 is a perspective view showing the entire bicycle assembly stand of the present invention. In the figure, reference numeral 1 denotes a base body, to which leg portions 2 extend in four directions to prevent the base body from falling. A level adjuster 3 is provided at the tip of the leg 2, and a caster-4 is attached to the tip of the leg 2 for facilitating transportation and movement.

Now, the cylindrical body A is fixed upright with respect to the base 1. Then, the tubular body B is fitted into the tubular body A, which can be slid up and down. A beam portion 7 extending in the lateral direction is fixed at a right angle to the head of the cylindrical body B, and a pedestal 8 rotatably supported at the tip of the beam portion 7 is provided.
The pedestal 8 is provided with a post 8 ₅ on one side and a clamp portion 10 on the opposite side. The above-mentioned slide between the cylinder A and the cylinder B is provided with bearings 5 protruding from the respective corners of the cylinder B, which is a rectangular cylinder, as shown in FIG. It comes into contact with the corner 6 and slides up and down. As described above, the cylinder A may be inserted into the cylinder B.

The cylinder B is preferably equipped with a gas spring, whose vertical movement can be adjusted steplessly and which is equipped with a hydraulic lock mechanism. FIG. 3 is a vertical cross-sectional view showing an example of the gas spring 11. A cylinder 11 ₁ is filled with compressed gas 11 ₂ and oil, and a piston 11 ₅ having a rod 11 ₄ connected thereto is built therein.
The inside of the cylinder 11 ₁ is divided into upper and lower chambers E and F, and the tip of the cylinder 11 ₁ is sealed with a seal material 11 ₆ . A rod pin 11 ₇ is inserted in the center of the rod 11 _{4 and} the rod pin 11 ₇ is connected to the piston 11 ₅
Through which a valve 11 ₈ is provided. This stick pin 11 ₇
The other end of is connected to the foot pedal C. In the figure, 11 ₉ is an O-ring and 11 ₁₀ is a rod guide.

FIG. 4 is an enlarged view in the vicinity of the piston 11 ₅ , and FIG. 5 is an enlarged view showing the flow of the rod pin 11 ₇ , valve 11 ₈ and oil when the foot pedal C is depressed. That is, in FIG. 4, the state at the time when the foot pedal C is not depressed is shown, and the oils 11 ₃₁ and 11 ₃₂ are divided by the piston 11 ₅ and exist in the chambers E and F. Absent. Therefore, the piston 11 ₅ does not move up and down, and the cylinder B integrally attached to the cylinder 11 ₁ does not move up and down.

However, when the foot pedal C is depressed,
As shown in FIG. 5, the valve 11 ₈ provided at the tip of the rod pin 11 ₇ is separated from the piston 11 ₅ , so that the piston 11 ₅ and the shaft of the valve 11 ₈ , that is, the cutout portion 11 ₁₁ of the rod pin 11 ₇ are separated from each other. There is a gap between them. Therefore, the oil 11 ₃₁
Enters the orifice 11 ₁₂ formed in the piston 11 ₅ ,
It will be continuous with the oil 11 ₃₂ through the notch 11 ₁₁ of the rod pin 11 ₇ . That is, when stepping on foot pedal C, oil piston 11 ₅ chambers E and chamber F which has been divided at will become one be continuous here. In this state, the rod 11 ₄ integrated with the piston 11 ₅ is unlocked, and the rod 11 ₄ extends due to the reaction force of the compressed gas in the chamber E.
When an external force greater than the reaction force of the compressed gas 11 ₂ is applied to 1 ₄ , the rod 11 ₄ will contract.

When the foot is released from the foot pedal C,
Again, the valve 11 ₈ automatically returns to the inside of the recess formed in the piston 11 ₅ by the reaction force of the compressed gas 11 ₂ , and the chambers E and F are shut off and locked. In this way, by stepping on the foot pedal C, the tubular body B is raised, while on the other hand, it is lowered by applying an external force. Therefore, the vertical movement can be adjusted steplessly, and the pedaling can be stopped. As a result, the cylinder B is locked while maintaining its position.

On the other hand, the beam portion 7 fixed to the head of the cylindrical body B
FIG. 6 shows the relationship between the pedestal 8 and the pedestal 8 rotatably supported at the tip. FIG. 6 is a partial cutaway view from the side,
FIG. 7 is a partially enlarged sectional view showing the main part thereof. Now, the wire stopper 7 ₁ is provided on the beam portion 7 and the dish 7 ₂ is provided at the tip thereof. The wire stop ₇₁ is outer covering wire 7 ₃ which is connected to the foot pedal D - wire 7 ₄ is fixed to the wire (inner - wires) 7 ₃ the nut 7 while maintaining resiliency ₅ The wire 7 ₃ is fixed to the dish 7 ₂ with a pin 7 _{6 at} the tip of the wire 7 ₃ .

Therefore, when the foot pedal D is depressed, the wire 7 ₃ is pulled toward the arrow X ₁ side, and accordingly, the pin 7 ₆ also moves toward the arrow X ₁ side and is positioned inside the dish 7 _2. Becomes On the other hand, when the foot is released from the stepping padal D, the spring force provided in the long nut 7 ₅ causes the pin 7 ₆ to immediately move to the arrow X ₂ side, and the dish 7
The tip of pin 7 ₆ projects from ₂ .

Now, the disk portion 8 ₁ of the pedestal 8 is the plate body 7 ₂
Is rotatably supported by the beam portion 7 so as to face. 8 ₂ is its shaft portion, and 8 ₃ is a nut for mounting it. This disk portion 8 ₁ has the pin 7 near the periphery thereof.
₆ has a pin hole 8 ₄ to be fitted is bored at a predetermined interval, by releasing the foot of the foot pedal D, fitted with the pin hole 8 ₄ and pin 7 ₆ desired position is disc The part 8 ₁ is locked and the pedestal 8 is fixed in place.

The post 8 ₅ is erected on one side of the pedestal 8, and the clamp portion 10 as described above is provided on one side thereof. Thus, for example, if you want to post 8 ₅ upward to rotate the seat 8 while depressing the foot pedal D, the post 8 ₅ will be releasing the foot from the foot pedal D after the desired position, whereby the disc 8 ₁ The pin hole 8 ₄ and the pin 7 ₆ are fitted to each other, and the pedestal 8 is fixed while maintaining that state.

The clamp portion 10 is a handle portion 10 ₁ which is rotated in the directions of the arrows Y ₁ and Y ₂ , and an arrow Z by the rotation.
₁ , clamp arms 10 ₃ and 10 _{4 for} holding a bicycle pipe are provided on the tip of the arm portion 10 ₂ and the pedestal 8 which are composed of an arm portion 10 ₂ which rotates in the Z ₂ direction. There is. That is, if the handle portion 10 ₁ is rotated in the direction of the arrow Y ₁ ,
Along with this, the arm portion 10 ₂ also moves in the direction of arrow Z ₁ ,
The clamp pieces 10 ₃ and 10 ₄ are fixed with the pipe held. On the other hand, move the handle 10 ₁ to the arrow Y
If rotation in _two directions A - arm portion 10 ₂ is upward (Z ₂ direction)
Move to and the clamp will be released.

Now, an operation example of the bicycle assembly stand of the present invention will be described. First, the post 8 ₅ erected on the pedestal 8 is stepped up vertically by stepping on the foot pedal D, and then the foot is stopped and fixed there. The post 8 ₅ of the pedestal 8 is inserted into the portion of the vertical pipe 13 into which the above is inserted. Further, the foot pedal C is depressed, and the vertical position is adjusted to a desired position where the assembling work is easy, and the pedal C is stopped. As a result, the unpacked 7-minute bicycle is
Other parts are turned upside down as shown in FIG. 8 in a state where they are fastened to the frame or the rear wheel with a string and fixed at a desired height. Here, for example, the front wheel is unraveled, This will be assembled in the front hawk. In this way, first, the bicycle is turned upside down, and the parts are sequentially unraveled and assembled. When the assembly in the upside down state is completed, the bicycle is removed from the post 8 ₅ . In addition, in the illustrated example, the post 8
_{Although 5} is erected on the pedestal 8, it may be erected upward on the beam portion 7.

Here, the foot pedal C is depressed and the cylinder B is
The cylindrical body B is pushed down by applying a force to the head of the person, and then the foot pedal D is depressed to reverse the pedestal 8 and the clamp portion 10 is directed upward. Then, place the upper pipe 14 of the bicycle on the clamp piece 10 ₄ with the base 8, then raise the seat 8 depresses the foot pedal C. On this occasion,
Rotate the handle 10 ₁ to clamp the upper pipe 14 to the clamp piece 1
It is fixed between 0 ₃ and 10 ₄ as shown in FIG. 9, and after being raised to a desired height, the foot is released from the foot pedal C.

In this state, assembly work, front and rear wheel adjustment, brake adjustment, etc. are performed and the work is completed. Of course, in the case of assembling work, if it is better to tilt the bicycle, it is possible to keep the bicycle fixed while tilted by stepping on the foot pedal D, tilting it to a desired position, and releasing the stepping. . Incidentally, the cylinder A
In that case, it is preferable to provide a hook (not shown) for attaching a shelf or the like on which parts and tools required for assembly work are mounted, and further, a hook for suspending the air-hose reel. It is good to keep it. Further, since the clamp portion 10 for fixing the upper pipe 14 is clamped while drawing an arc, the clamp piece 10 is used as a ball joint between the arm portion 10 ₂ and the clamp piece 10 _3. It is a good method to make ₃ swingable. Further, when the upper pipe is fixed and the assembling work is performed, the bicycle itself tends to swing around the upper pipe. However, as an assembly work, an operator is mainly on the side opposite to the cylinder body A side with respect to the bicycle, and therefore the bicycle should not swing toward the cylinder body A side. A part of the bicycle should be supported by a support rod (not shown) extending from the cylinder A. This does not need to be firmly supported, and it is sufficient to provide a simple contact member on the cylinder A side that does not shake. .

[0028]

The present invention is a bicycle assembly stand having the above-mentioned structure. Since a power source is not required as a mechanism for adjusting the vertical position of the bicycle, the assembly work can be carried out no matter where the stand is moved. Moreover, the vertical position of the bicycle can be finely adjusted and the bicycle can be tilted and rotated. Moreover, since all of these adjustment works are pedal-type operations that are operated by the feet, it is not necessary to adjust the hands apart from the bicycle, and the safety of the work itself is ensured.

A further feature of the present invention is that, in the initial stage of assembly, for example, a stand pipe of an unpacked 7-minute bicycle can be used, and the assembly work can be performed by fixing the pipe upside down. However, it is possible to assemble sequentially while unraveling, and it has a great feature that not only the work efficiency but also the scattering of parts is eliminated.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire bicycle assembly stand of the present invention.

FIG. 2 is a cross-sectional view showing the relationship between a cylinder A and a cylinder B.

FIG. 3 is a vertical sectional view showing an example of a gas spring.

FIG. 4 is an enlarged view of the vicinity of the piston in FIG.

FIG. 5 is an enlarged view in the vicinity of the piston when the foot pedal C is depressed.

FIG. 6 is a partially cut side view of a beam portion and a pedestal.

FIG. 7 is a partially enlarged cutaway view of FIG.

FIG. 8 is a side view of the bicycle standpipe and the pedestal post when fitted together.

FIG. 9 is a side view showing a state in which the upper pipe of the bicycle is sandwiched between the clamp pieces.

[Explanation of symbols] A, B ... cylinder, C, D ... foot pedal, E, F ... chamber, 1 ... base, 2 ... legs, 3 ... level adjuster, 4 caster -, 5 ... bearings, 6 ... corners of the cylinder A, 7 ... beams, 7 ₁ ... wire stoppers, 7 ₂ ... pans, 7 ₃ ... wires, 7 ₄ ... outer -Wire, 7 ₅・ ・ ・ Long nut, 7 ₆・ ・ ・ Pin, 8 ・ ・ ・ Pedestal, 8 ₁・ ・ ・ Disk part, 8 ₂・ ・ ・ Shaft part, 8 ₃・ ・ ・ Nut, 8 ₄・ ・ ・ Pin hole, 8 ₅ Posts, 10 Clamps, 10 ₁ Handles, 10 ₂ Arms, 10 ₃ , 10 ₄ Clamp pieces, 11 Gas springs, 11 ₁ Cylinders, 11 ₂・ ・ ・ Compressed gas, 11 ₃₁ , 11 ₃₂・ ・ ・ Oil, 11 ₄・ ・ ・ Rod, 11 ₅・ ・ ・ Piston, 11 ₆・ ・ ・ Seal material, 11 ₇・ ・ ・ Bar pin, 11 ₈ ... valve, 11 ₁₁ ... notch of rod pin 11 ₇ , 11 ₁₂ ... orifice, 12 ... seat post, 13 ... vertical pipe, 14 ... upper pipe.

Claims (2)

[Claims] 1. A cylindrical body A which is upright on a base body, a cylindrical body B which is fitted to the cylindrical body A, a beam portion which is fixed to the head of the cylindrical body B and extends in the lateral direction, and the beam portion. In a bicycle assembly stand having a rotatable pedestal and a clamp portion on the pedestal, a cylinder A and a cylinder B are made slidable, and the cylinder B is equipped with a gas spring and slides in an axial direction. And a foot pedal C that is connected to the piston to allow the cylinder B to move up and down, a foot pedal D that is connected to a wire that controls the rotation of a pedestal provided on the beam, and A bicycle assembly stand characterized in that a post that can be fitted relatively to a standing pipe is erected on a beam portion or a pedestal. 2. The bicycle assembly stand according to claim 1, wherein the post is erected so that the installation position of the clamp portion is displaced from the clamp portion of the pedestal.