JPH0627483U - Quick lever slip-off prevention device for folding bicycles - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] In a folding bicycle in which the frame is folded by tightening the quick lever or the frame is tightened, the quick lever is loosened or protruded by careless rotation. Prevent various dangers caused by. [Composition] An L-shaped quick lever that rotates around a rotation shaft of a base, which is equipped at a tightening point of a frame folding connection part, and a rotation locus of the quick lever that is a loose side of the quick lever. A stopper that constantly urges and projects inside, and at the position corresponding to the tightening side of the quick lever at the protruding tip of the stopper, the stopper can be retracted in response to tightening and pressing by the quick lever. It is formed by forming a possible inclined surface. As a result, it is possible to prevent the quick lever from loosening due to careless rotation and to prevent an unexpected accident due to protrusion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is equipped with a quick lever that can be easily tightened and loosened by simply raising and lowering the lever via a quick housing, etc. The purpose of the locking device is to prevent the quick lever from loosening due to inadvertent rotation, and to prevent unexpected accidents due to the accidentally protruding quick lever.

[0002]

[Prior art]

 Recently, many bicycles are equipped with a quick lever so that the folding part of the body can be easily tightened and loosened by simply raising and lowering the lever. . Especially, regarding the folding mechanism of the frame pipe in a folding bicycle, a connecting tool with a pair of connecting 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. In addition, the free ends of the joint lugs have been assembled by mutually tightening them with a quick lever with a lock screw, or by loosening the free ends to open and fold them. It is considered.

[0003]

[Problems to be solved by the device]

 However, in the case of the structure described above, it is convenient because it does not require a tool to tighten it with the quick lever, but on the other hand, the quick lever is caught on the hem of the pants, so that it is inadvertently loosened on the loose side due to various reasons. They often rotate, which can result in abrupt folding during riding and bending of the frame pipes of the bicycle, which can pose a serious risk during riding.

[0004]

[Means for Solving the Problems] Therefore, the present invention solves various problems in the above-described conventional technology, prevents the quick lever from being unintentionally moved, and improves safety. Specifically, an L-shaped quick lever that rotates around the rotation axis of the base, which is equipped at the tightening point of the frame folding connection part, and a quick lever that is the loose side of the quick lever. The stopper that constantly urges into the rotation trajectory of the stopper, and the stopper is retracted to the position corresponding to the tightening side of the quick lever, which is the protruding tip of the stopper, corresponding to the tightening pressure of the quick lever. The present invention relates to a device for preventing a quick lever from slipping off in a folding self-rotating vehicle, which is characterized by forming an inclined surface capable of moving.

Further, in the present invention, the above-mentioned stopper which constantly urges and projects into the rotation locus of the quick lever is provided with a bar which can advance and retreat within the rotation locus of the quick lever, and which is always attached with the bar facing the loose side of the quick lever. It is composed of a biasing spring, and at the position corresponding to the tightening side of the quick lever at the tip of the spring, an inclined surface is formed so that the stopper can be retracted in response to tightening pressure by the quick lever. It also relates to a quick lever retaining device for a characteristic folding bicycle.

Further, in the stopper of the present invention, which always urges and projects into the rotation path of the quick lever, the base is rotatably attached to the connecting portion on the loose side of the quick lever, and the tip of the stopper is always quick. The lever has means for urging it forward in the rotation path of the lever, and a quick lever stop is provided at the tip facing the quick lever, and the position of the tip corresponds to the tightening side of the quick lever. The present invention also relates to a quick lever disengagement prevention device for a folding bicycle, which is characterized in that an inclined surface is formed so that the stopper can be retracted in response to the tightening pressure by the quick lever.

[0007]

[Action]

 An L-shaped quick lever that rotates around the rotation axis of the base, which is equipped at the tightening point of the frame folding connection, rotates the free end toward the tightening side about the rotation axis. At this time, the free end of the quick lever hits the protruding tip of the stopper, and when it is rotated further, the stopper is pressed in the direction opposite to the biasing direction along the inclined surface, and when the quick lever passes by, the stopper again projects and the quick lever Restricts rotation to the loose side.

[0008]

【Example】

 The specific contents of the present invention will be described below based on the first embodiment of FIGS. 1 to 3 and the second embodiment of FIGS. 4 to 6. First, in the first embodiment, 1 and 8 are The side is openable and closable via the shaft rod 2 of the hinge mechanism, and the abutting surfaces thereof can be overlapped with each other so as to be interposed between the frame pipes 3 and 9 to form a pair of connecting portions. Coupling plate 4, 4 is a quick lever pivotally attached to the open end of one of the coupling plates 1, 6 is a lock screw rotatably held by an eccentric cam shaft 5 of the quick lever 4, 7 is a lock screw 6 A fastening screw threaded into the free end of the quick lever 4 and a stopper 11 for restricting the rotation of the quick lever 4 are shown.

The pair of coupling plates 1.8 have hinges projecting from one side thereof, and these hinges are coaxially overlapped and the shaft rod 2 is inserted to form a hinge mechanism. Further, the one joint plate 1 described above is integrally welded on the back side thereof to the end of the frame pipe 3, and its open end (on the side opposite to the hinge) is fixed to the open end face with respect to each other. A pair of hinges are provided so as to be spaced apart from each other, a substantially U-shaped groove is formed between the hinges, and the shaft hole of the lock screw 6 and the shaft hole of the hinge are formed coaxially. A rotary shaft of a substantially L-shaped quick lever 4 having an eccentric cam shaft 5 with a different diameter formed in the center is inserted from the lower side of the hinge into the groove, and the shaft hole of the lock screw 6 is coaxially inserted. Part of the hinge is protruded above the hinge, and a snap washer is fitted into a groove (not shown) formed on the peripheral surface of the protrusion, and the quick lever 4 and the lock screw 6 are rotatably attached respectively. is there.

Further, the other joint plate 8 has its back surface side integrally welded to the end portion of the frame pipe 9, and its open / close end (the side opposite to the hinge) overlaps with the abutting surface of the joint plate 1. A U-shaped engagement groove (not shown) opened toward the open end is formed so as to engage the lock screw 6 for coupling when they face each other.

The stopper 11 is installed in the bar that is moved forward and backward within the rotation locus of the quick lever 4 by the guide 10 and in the spring groove 11a provided in the center of the bar, and is always attached toward the loose side of the quick lever. A sloping surface composed of a biasing spring 12 and at a position corresponding to the tightening side of the quick lever 4 at the tip of the stopper 11 and capable of retracting the stopper 11 in response to tightening pressure by the quick lever 4. 11b is formed. In the drawing, 11c represents a knob.

When assembling a bicycle, the frame pipes 3 and 9 are made linear, the connecting plates 1 and 8 are butted against each other, and then the knob 11c is released to release the stopper 11 freely. In this state, the tip of the quick lever 4 can enter the rotation track of the quick lever 4 and restrict the rotation of the quick lever 4 toward the loose side. Further, when the bicycle is folded, the knob 11c is pulled against the biasing force of the spring 12 to retract the tip of the stopper 11 from the rotation locus of the quick lever 4 to move the quick lever 4 to the loose side. Allowing rotation, this allows the connecting plates 1 and 8 to be pulled apart and the frame pipes 3 and 9 to be bent together.

In this case, when the quick lever 4 is rotated to the tightening side, when the quick lever 4 is rotated to the tightening side with the knob 11c released, a part of the lever 4 is stopped. When the quick lever 4 is further rotated by contacting the inclined surface 11b, the stopper 11 can be retracted while sliding on the inclined surface 11b, and the stopper 11 can be overcome to rotate to the tightening side. In this case, immediately after the quick lever 4 has passed over the stopper 11, the stopper 11 is within the rotation locus of the quick lever 4 again due to the urging force of the spring 12, so that the quick lever 4 projects toward the loose side. Is restricted from rotating to the loose side.

Next, a second embodiment of the present invention will be described. In the drawings of FIGS. 4 to 6, reference numeral 13 represents a stopper capable of exhibiting the same function as that of the first embodiment. On the loose side of the quick lever 4, the stopper 13 is rotatably mounted at its base portion to the frame pipe 3 near the coupling portion 1, and has a knob 13a at its tip and a tip on the side facing the quick lever 4. A quick lever stop portion 13c formed on the front end, and an inclined surface 13b formed at a position corresponding to the tightening side of the quick lever 4 at the tip and capable of retracting the stopper 13 in response to tightening pressure by the quick lever 4. Is formed, and a spring 14 is interposed as a means for constantly urging the quick lever 4 forward toward the rotation locus of the quick lever 4. The other construction is the same as that of the first embodiment described above.

In the structure of the second embodiment described above, when assembling a bicycle, the frame pipes 3 and 9 are made linear and the connecting plates 1 and 8 are butt-joined to each other. By releasing the knob 13a and leaving the stopper 13 in a free state, the tip of the knob 13a enters the rotation locus of the quick lever 4 and the quick lever stop portion 13c formed at the tip holds the quick lever 4 and the quick lever 4 is held. Rotation to the loose side can be restricted. When the bicycle is further folded, the knob 13a is pulled against the urging force of the spring 14 and the tip of the stopper 13 is retracted from the rotation locus of the quick lever 4 to rotate the quick lever 4 toward the loose side. By this, the connecting plates 1 and 8 can be pulled apart and the frame pipes 3 and 9 can be bent mutually.

In this case, when the quick lever 4 is rotated to the tightening side, the quick lever 4 is rotated to the tightening side with the knob 13a released, so that a part of the lever 4 becomes a stopper. By contacting the inclined surface 13b of 13 and further rotating the quick lever 4, the stopper 13 can be retracted while sliding on the inclined surface 13b, and the stopper 13 can be overcome to rotate to the tightening side. Immediately after the quick lever 4 has passed over the stopper 13, the stopper 13 is again in the rotational locus of the quick lever 4 due to the urging force of the spring 14, and the stopper 13 is loosened because it projects to the loose side. Rotation to the side is restricted.

[0017]

[Effect of device]

 As described above, the present invention is equipped with an L-shaped quick lever that rotates around a rotation axis of a base, which is installed at a tightening point of a frame folding connection part, and a loose side of the quick lever. The stopper consists of a stopper that always urges and projects into the locus of rotation of the lever, and at the position corresponding to the tightening side of the quick lever at the protruding tip of the stopper, the stopper corresponds to the tightening pressure of the quick lever. Since it is formed with an inclined surface that can be retracted, it prevents the quick lever from loosening due to careless rotation, and the quick lever loosens carelessly and the frame pipe bends The risk of causing an accident can be eliminated.

[Brief description of drawings]

FIG. 1 is an enlarged plan view of an essential part of a quick lever slip-off prevention device in a folding bicycle according to a first embodiment of the present invention.

FIG. 2 is an enlarged side view of an essential part of the quick lever detachment prevention device in FIG.

FIG. 3 is a sectional view taken along the line AA in FIG.

FIG. 4 is an enlarged plan view of an essential part of a quick lever slip-off prevention device for a folding bicycle according to a second embodiment of the present invention.

5 is an enlarged side view of an essential part of the quick lever detachment prevention device in FIG. 4;

6 is a sectional view taken along the line BB in FIG.

[Explanation of symbols]

 1 connecting plate 2 shaft rod 3 frame pipe 4 quick lever 5 eccentric cam shaft 6 quick lever 7 tightening screw 8 connecting plate 9 frame pipe 10 guide 11 stopper 11a spring groove 11b inclined surface 11c knob 12 spring 13 stopper 13a knob 13b inclined surface 13c Quick lever stop part 14 Spring

Claims (3)

[Scope of utility model registration request] 1. An L-shaped quick lever that rotates around a rotation axis of a base, which is provided at a tightening portion of a frame folding connection portion, and a loose side of the quick lever, the quick lever At the position corresponding to the tightening side of the quick lever, which is composed of a stopper that constantly urges and projects into the rotation locus and that corresponds to the tightening side of the quick lever, retract the stopper in response to tightening and pressing by the quick lever. A device for preventing the quick lever from slipping off in a folding bicycle, which is characterized by forming an inclined surface capable of 2. The stopper, which always urges and projects into the rotation locus of the quick lever, comprises a bar that can advance and retract within the rotation locus of the quick lever, and a spring that constantly urges the bar toward the loose side of the quick lever. And a slanting surface capable of retracting the stopper in response to tightening pressure by the quick lever is formed at a position corresponding to the tightening side of the quick lever at the tip. Item 9. A device for preventing a quick lever from coming off in a folding bicycle according to Item 1. 3. The stopper, which constantly urges and projects into the rotation locus of the quick lever, has a base portion rotatably attached to the vicinity of the coupling portion on the loose side of the quick lever, and a tip thereof is always the rotation locus of the quick lever. Having a means for urging forward toward the inside, and further having a quick lever stop portion at the tip on the side facing the quick lever,
Moreover, an inclined surface capable of retracting the stopper in response to tightening pressure by the quick lever is formed at a position of the tip end corresponding to the tightening side of the quick lever. Locking device for quick levers on folding bicycles.