JP2509279Y2 - Lock mechanism of quick lever for tightening on bicycle - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention uses a sleeve for a folding connection portion of a bicycle frame which is capable of folding a vehicle body, and a quick seat pin for one-touch adjustment, removal and fixing of the saddle height. Like a so-called quick release that allows the wheels to be attached and detached only by raising and lowering the so-called cam lever or hub quick shaft lever that can be attached, by simply raising and lowering the lever through a quick housing, you can easily tighten and loosen it. A quick lever that can be operated, which prevents the quick lever from loosening due to inadvertent rotation, and prevents an unexpected accident from occurring due to a quick lever that is inadvertently projected Is.

[0002]

2. Description of the Related Art In recent bicycles, a quick lever is attached to a folding portion of a vehicle body, a seat post, or the like so that the user can easily tighten or loosen the lever by simply raising and lowering the lever. Many things have come to be seen. In particular, one example of the folding mechanism of the frame pipe in a folding bicycle is as follows.A connecting member with a pair of joint lugs that can be folded laterally around the vertical axis is provided in the middle of the frame pipe that connects the head pipe and the vertical pipe. A structure in which the free ends of the respective joint lugs are assembled and fastened integrally with each other by a quick lever having a lock screw or loosened to open and fold the free ends is considered.

[0003]

[Problems to be Solved by the Invention] However, in the case of the one having the above-mentioned constitution, it is convenient because it does not require a tool for tightening by the quick lever, but on the other hand, due to various circumstances such as the quick lever being caught on the hem of pants It often turns carelessly to the slack side.Therefore, in a folding bicycle, the frame pipe suddenly bends while running, or the saddle drops suddenly in the seat post. It can pose a serious risk while driving.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention solves various problems in the above-mentioned prior art, prevents inadvertent movement of the quick lever, and improves safety. Specifically, an L-shaped quick lever that is equipped at a fastening portion such as a folding connection portion, a seat post, a wheel, and rotates around a rotation shaft of a base portion, and when the quick lever is in a fastening state, And a lever stopper that restricts rotation in the loosening direction. The lever stopper is rotatably supported with a pivot pin whose one end is directed in an axial direction intersecting the axis of the rotary shaft as a fulcrum. Moreover, a locking side wall surface for restricting rotation of the quick lever in the loosening direction is formed at its free end, and a locking mechanism for a tightening quick lever in a bicycle characterized by the above-mentioned. About.

Further, the present invention is a connecting portion interposed in the middle of a frame pipe so that the vehicle body can be folded, and the connecting portion includes a pair of connecting plates whose one side can be opened and closed by a hinge mechanism. , An L-shaped quick lever that has its rear surface integrated with a frame pipe and that rotates on a rotary shaft of the base on one of the open ends of the coupling plate, and a cam of the rotary shaft of the quick lever. The shaft is provided with a lock screw whose one end is rotatably held, and the other end of the coupling plate release end is provided with an engagement groove for engaging the lock screw for connecting when facing each other, and the quick lever is tightened. At one time, it has a lever stopper for restricting its rotation in the loosening direction, and the lever stopper rotates about a pivot pin whose one end is directed in an axial direction intersecting the axis of the rotary shaft. It is supported in stationary, yet its free end, also relates to a locking mechanism of the quick lever quick lever clamping in a bicycle, characterized by comprising forming a restriction side wall which can restrict the rotation of the loosening direction.

[0006]

The L-shaped quick lever has its free end rotated around the rotation axis toward the tightening side, and is stopped at the tightening completion position, and then the lever stopper is moved around the free end with the rotation pin as the fulcrum. The quick lever is turned to the side, and the regulating side wall surface is aligned with the loose side surface of the quick lever to regulate the turning of the quick lever to the loose side.

Further, in the case of being applied to a frame connecting portion of a folding bicycle, a pair of connecting plates are superposed with their front surfaces facing each other, and a lock screw attached to an open / close end of one connecting plate is freely attached. When the end is engaged with the engagement groove of the other coupling plate, the L-shaped quick lever that rotates around the rotation axis of the base is rotated about 180 degrees to the tightening side to complete the tightening completion point. Then, rotate the free end of the lever stopper to the quick lever side with the turning pin as the fulcrum, and align the regulating side wall surface with the side surface on the loose side of the quick lever to move to the loose side of the quick lever. Restrict rotation.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The concrete contents of the present invention are applied to a frame folding mechanism of a folding bicycle as shown in FIGS.
1 and 17, one side can be freely opened and closed via a shaft rod 22 of a hinge mechanism.
Frame pipes 3, whose surfaces can be stacked on top of each other,
And 19 are a pair of connecting plates that form a connecting portion interposed therebetween, 6 is a quick lever rotatably attached to the open end of the connecting plate 1, and 9 is a cam shaft of the quick lever 6. A lock screw freely held, 14 is a tightening screw screwed into the free end of the lock screw 9, and 24 is a lever stopper for restricting rotation of the quick lever.

The pair of connecting plates 1.17 has hinges 2.2 and 18 respectively projecting from one side thereof, the hinges 2.2 and 18 are superposed coaxially, and the shaft rod 22 is provided.
The hinge mechanism is constructed by inserting the. Further, the one joint plate 1 described above is integrally welded at its rear surface side to the end of the frame pipe 3, and at its open end (the hinge 2).
(On the opposite side), a pair of hinges 1a. 1b are provided so that the hinges 1a. A groove portion 5 having a substantially U shape is formed between 1b. Further, in the groove portion 5, a rotation shaft hole of the base portion 10 of the lock screw 9 is coaxially positioned. The lock screw 9 has a shaft hole in its base portion 10, and a male screw portion 11 is provided on the outer peripheral surface near the open end on the opposite side.
Further, a groove is formed on the outer peripheral surface of the end portion, and an O-ring 13 is fitted in the groove.

The shaft hole of the lock screw 9 and the hinge 1a. A rotary shaft 7 of a substantially L-shaped quick lever 6 which is positioned coaxially with the shaft hole of 1b and has an eccentric cam portion 8 having a different diameter in its center is inserted from below the hinge 1b, and the lock screw 9
Part of which is inserted coaxially through the shaft hole above the hinge 1a, and a snap washer 6a is fitted into a groove (not shown) formed on the peripheral surface of the protruding portion, so that the quick lever 6 and the lock screw 9 are attached rotatably.

The tightening screw 14 is knurled on its outer peripheral surface, and internally has a female screw that can be screwed into the male screw portion 11 formed on the outer peripheral surface of the lock screw 9 on the free end side. Further, a stepped portion having a diameter larger than the diameter of the female screw portion is formed at a position near the opening, and a part of the side surface is formed in the stepped portion with the tightening screw 1
The ring-shaped elastic packing material 16 that can project outward from the side opening end edge portion of No. 4 is fitted. As the material of the elastic packing material 16 used in this case, for example, a material that is relatively hard, such as hard urethane or hard rubber, and that has some elasticity is suitable.

Further, the other connecting plate 17 has its back surface side integrally welded to the end portion of the frame pipe 19, and its open / close end (the side opposite to the hinge 18) is connected to the front surface 4 of the connecting plate 1. A U-shaped engaging groove 21 is formed so as to be engaged with the lock screw 9 for connection when they are faced with each other in an overlapping manner and opened toward an open end thereof.

The lever stopper 24 is rotatably supported with one end of which is a pivot pin 23 having an axis oriented in a direction intersecting the axis of the rotary shaft 7 of the quick lever 6.
In addition, the free end has a restricting side wall surface 25 capable of restricting the rotation of the quick lever in the loosening direction, and a pressing side wall surface 26 extending thereabove in a direction perpendicular to the restricting side wall surface 25. At the time of turning to the side, the restricting side wall surface formed at the free end of the lever stopper is attached to the side surface on the loose side of the quick lever 6 to prevent the quick lever 6 from turning inadvertently in the loosening direction. Has become.
Reference numeral 27 indicates a spring entwined with the rotating pin 23,
Always use the quick lever 6 on the free end of the rubber stopper 24.
Energize toward the direction where the tightening is completed.

In the above construction, when assembling a bicycle, the frame pipes 3 and 19 are made linear and the connecting plates 1 and 17 are butted against the surface portions 4 and 20, and then the lock screw 9 is attached. It is rotated and loaded into the engagement groove 21, and in this state, the tightening screw 14 is rotated to adjust the gap between the protruding surface of the packing material 16 and the peripheral edge of the engagement groove 21, and then the lever stopper 24 While lifting the free end upward, tighten and rotate the quick lever 6 until it reaches a predetermined position to rotate the frame pipe 3
And 19 are fixed in a straight line, the free end of the lever stopper 24 is released, and the regulating side wall surface 25 is positioned on the loose side surface of the quick lever 6 to complete the assembly.

In the case of folding in the opposite direction, first, the free end of the lever stopper 24 is lifted and the quick lever 6 is rotated in the opposite direction (loosening direction) by about 180 degrees to loosen the lock screw 9, and the lock screw 9 is engaged with the engaging groove. It is possible to easily fold the frame pipes 3 and 19 by removing them from 21, and bending them mutually with the shaft rod 22 of the hinge mechanism as the axis. In the embodiment described above, the spring 23 is interposed in the lever stopper 24 so that the free end of the spring 23 is constantly urged toward the tightening completion position of the quick lever 6, but the spring 23 is not always required. Not something to do. FIG. 5 shows an embodiment in which the present invention is applied to another frame pipe folding mechanism.

[0016]

[Effects of the Invention] As described above, the present invention is equipped at the fastening portions such as the folding connecting portion, the seat post, the wheel,
It consists of an L-shaped quick lever that rotates around the rotation axis of the base, and a lever stopper that restricts rotation in the loosening direction when the quick lever is in a tightened state. A side wall surface which is rotatably supported by a pivot pin directed in an axial direction intersecting with the axis of the rotary shaft and whose free end can regulate the rotation of the quick lever in the loosening direction. Since the regulating side wall surface formed at the free end of the lever stopper is made to fit the side surface on the loose side of the quick lever when the quick lever is rotated to the tightening side, It is possible to prevent the quick lever from loosening due to inadvertent rotation, and prevent an unexpected accident from occurring due to the quick lever protruding inadvertently.

Further, it is applied to a connecting portion for folding a frame in a folding bicycle, and the back side of each of a pair of connecting plates to be opened and closed is integrated with a frame pipe, and one of the open ends of the connecting plate has a rotating shaft of a base portion. L to rotate around
A V-shaped quick lever and a lock screw whose one end is rotatably held by a cam shaft of the rotary shaft of the quick lever are provided, and the lock screw for connecting the other end of the coupling plate release end to the facing face is engaged. An engaging groove is provided for mating, and further has a lever stopper that restricts rotation in the loosening direction when the quick lever is in a tightened state,
The lever stopper is rotatably supported at one end by a pivot pin oriented in an axial direction intersecting the axis of the rotary shaft, and at its free end, the quick lever is pivoted in a loosening direction. When the quick lever is turned to the tightening side, the restriction side wall surface formed on the free end of the lever stopper is attached to the side surface on the loose side of the quick lever and the frame pipe Since there is almost no gap between them, there is no risk of accidentally getting caught in clothes such as pants when getting on or off, or accidentally loosening the quick lever and bending the frame pipe, causing an unexpected accident. You can

[Brief description of drawings]

FIG. 1 is an enlarged side view of essential parts when the present invention is applied to a frame pipe folding mechanism in a folding bicycle.

2 is a plan view of the folding mechanism in FIG. 1. FIG.

FIG. 3 is a sectional view of a portion AA in FIG.

FIG. 4 is a perspective view of a lever stopper.

FIG. 5 is a perspective view showing a state in which the present invention is applied to a folding mechanism for a frame pipe in another folding bicycle, in which a quick lever is released and a pair of connecting plates are released.

[Explanation of symbols]

 1 connecting plate 1a hinge 1b hinge 2 hinge 3 frame pipe 4 surface part 5 groove part 6 quick lever 7 rotary shaft 8 eccentric cam part 9 lock screw 10 lock screw base 11 male screw part 13 O-ring 14 tightening screw 16 elastic packing material 17 Coupling plate 18 Hinge 19 Frame pipe 20 Surface part 21 Engagement groove 22 Shaft bar 23 Rotating pin 24 Reverter top 25 Regulator side wall surface 26 Holding side wall surface 27 Spring

Claims (2)

(57) [Scope of utility model registration request] 1. An L-shaped quick lever that is provided at a tightening portion such as a folding connecting portion, a seat post, a wheel, and rotates around a rotation shaft of a base, and when the quick lever is in a tightened state, And a lever stopper that restricts rotation in the loosening direction. The lever stopper is rotatably supported with a pivot pin whose one end is directed in an axial direction intersecting the axis of the rotary shaft as a fulcrum. Moreover, a locking mechanism for a tightening quick lever in a bicycle, characterized in that a free side wall is formed with a restricting side wall surface capable of restricting rotation of the quick lever in a loosening direction. 2. A connecting portion interposed in the middle of a frame pipe for folding a vehicle body, the connecting portion comprising:
A pair of connecting plates whose one side can be opened and closed by a hinge mechanism,
The back side of each of them is integrated with the frame pipe,
In addition, an L-shaped quick lever that rotates around the rotation shaft of the base portion and a lock screw that has one end rotatably held by the cam shaft of the rotation shaft of the quick lever are provided at one of the open ends of the coupling plate. An engaging groove is provided on the other end of the coupling plate release end for engaging the lock screw for connecting when facing each other, and further, when the quick lever is in a tightened state, a lever that restricts rotation in the loosening direction The lever stopper is rotatably supported at one end by a pivot pin oriented in an axial direction intersecting with the axis of the rotary shaft, and the free end of the lever stopper of the quick lever is provided. A locking mechanism for a tightening quick lever in a bicycle, characterized in that a restricting side wall surface capable of restricting rotation in a loosening direction is formed.