JP4111280B2 - Caliper brake fittings for bicycle rear wheels - Google Patents

Description

  The present invention relates to a caliper brake attachment for detachably attaching a caliper brake for braking a rear wheel to a bicycle.

  As is well known, a caliper brake is used as one of the brake devices for bicycles. As shown in FIG. 8, the caliper brake 100 includes a pair of left and right arms 102 that are swingable about a mounting bolt 101, a brake shoe 103 that is provided at the lower end of each arm 102, a brake A spring 104 that biases each arm 102 so as to widen the distance between the shoes 103 is provided. Then, by operating the brake lever, the pair of arms 102 are swung against the urging force of the spring 104 via a brake wire (not shown), and the left and right brake shoes 103 are pressed against both sides of the wheel rim. Brakes the wheel rotation.

  Conventionally, when a caliper brake for rear wheel braking is attached to a bicycle, as shown in FIGS. 9 and 10, a mounting bolt 101 of the caliper brake 100 is connected to a pair of left and right seat stays 210 and 210 of the bicycle 200. The fixing nut 105 is inserted into the through-hole 221 of 220 and the fixing nut 105 is screwed to the mounting bolt 101 from the opposite side to be fastened. In the figure, what is indicated by reference numeral 230 is a bicycle standing pipe, and what is indicated by reference numeral 240 is a rear wheel of the bicycle.

  However, such a conventional caliper brake mounting method has a drawback in that when the fixing nut 105 is fastened, the mounting bolt 101 itself rotates as the fixing nut 105 rotates. On the other hand, the operation of fastening the fixing nut 105 while adjusting the left and right at regular intervals took time and effort.

Further, if the caliper brake 100 that has been adjusted in position and attached to the bicycle 200 is then removed from the bicycle 200 for maintenance, for example, even if the same brake is attached to the same bicycle. It was very troublesome to adjust the brake position again.
Japanese Utility Model Publication No. 50-97151

  The present invention has been made in view of the above-described drawbacks in the conventional mounting method of a caliper brake for rear wheel braking, and the existing caliper brake for rear wheel braking can be very easily applied to a bicycle. It is a technical object to provide a caliper brake fixture that can be attached and, once the position of the caliper brake with respect to the bicycle is adjusted, does not need to be adjusted every time the brake is attached.

  The present invention is an attachment for detachably attaching a caliper brake for a rear wheel to a bicycle, a support rod, a fixing portion provided on one end side of the support rod and capable of fixing the caliper brake, A pair of abutting portions provided on the other end side of the support rod and capable of abutting against a standing pipe of the bicycle; and provided between the fixed portion and the abutting portion of the support rod; And a fitting recess that can be fitted to a bridge that connects the seat stays.

  Further, the present invention is characterized in that the support rod is provided with rod length adjusting means capable of changing a distance between the abutting portion and the fitting recess.

  Furthermore, the present invention is characterized in that a pair of holding pieces for holding the bicycle standing pipe is provided at the abutting portion.

  Furthermore, the present invention is characterized by comprising holding interval adjusting means capable of changing the interval between the pair of holding pieces.

  According to the caliper brake fixture according to the present invention, after fitting the fitting recess into the bridge of the bicycle, the caliper brake for rear wheel braking can be very easily achieved by merely abutting the abutting portion against the vertical pipe. Can be installed on a bicycle.

  Moreover, the position of the caliper brake with respect to the bicycle in the left-right direction can be determined as long as the fitting operation of the fitting recess with respect to the bridge and the abutting operation of the abutting portion with respect to the standing pipe are reliably performed. Therefore, once the position of the caliper brake with respect to the bicycle is adjusted, it is not necessary to adjust the position of the brake every time the caliper brake is attached.

  Hereinafter, the rear wheel caliper brake fixture 10 of the present embodiment will be described with reference to FIGS.

  As shown in FIG. 1, the caliper brake fixture 10 of the present embodiment is provided with a rod-shaped support rod 1, a fixing portion 2 that is provided on one end side of the support rod 1 and can fix an existing caliper brake, and a support rod. 1 is provided between the abutment portion 3 provided on the other end side of the bicycle 1 and capable of abutting against a standing pipe of the bicycle, and between the fixed portion 2 and the abutment portion 3 of the support rod 1, and a pair of left and right seat stays of the bicycle A fitting recess 4 that can be fitted to a bridge that connects them, a rod length adjusting means 5 for changing the distance between the fitting recess 4 and the abutting portion 3, and a pair provided in the abutting portion 3 And holding interval adjusting means 6 for changing the interval between the holding pieces 33.

  The support rod 1 is made of a round bar-shaped aluminum material. A substantially hemispherical head 11 is formed at one end, and a slot 51 of a rod length adjusting means 5 which will be described later is formed in the longitudinal direction of the support rod 1 at the other end. It is formed along (axial direction).

  The fixing portion 2 penetrates the head 11 of the support rod 1 with a columnar fixed seat 21 provided with the axis thereof oblique to the axial direction of the support rod 1, and the fixing seat 21 and the head 11. And a step portion 23 formed in the fixing hole 22. As shown in FIG. 4, after the mounting bolt 101 of the existing caliper brake 100 is inserted into the fixing hole 22 of the fixing portion 2, the fixing nut 105 is screwed from the opposite side, and the enlarged head of the fixing nut 105 is 106 is engaged with the step portion 23 of the fixing hole 22 and fastened. Thus, as shown in FIG. 5, the existing caliper brake 100 can be easily attached to the fixing portion 2 of the caliper brake attachment 10. The caliper brake fixture 10 of the present embodiment performs the attaching / detaching operation on the bicycle 200 in a state in which the caliper brake 100 is fixed to the fixing portion 2 in advance and integrated with the caliper brake 100.

  As shown in FIG. 1, the abutting portion 3 is formed at an end portion of an abutting portion main body 31 made of a substantially truncated cone-shaped aluminum material provided on the other end side of the support rod 1. An insertion hole 32 is formed in the abutting portion main body 31 in the axial direction, and the other end side of the support rod 1 is inserted into the insertion hole 32 so as to be slidable. The abutting portion main body 31 is fixed at a desired position on the other end side of the support rod 1 by a rod length adjusting means 5 described later.

  Further, the abutting portion 3 of the present embodiment is formed in a concave curved surface shape so as to abut on a cylindrical standing pipe of the bicycle with almost no gap. A pair of holding pieces 33 are integrally provided at both ends of the abutting portion 3 so as to abut the both sides of the standing pipe and hold the standing pipe when the abutting portion 3 is abutted against the standing pipe. ing. Further, in the present embodiment, a thin layer 34 made of urethane rubber is pasted from the concave curved surface-shaped abutting portion 3 to each inner surface of the pair of holding pieces 33, and the abutting portion 3 While preventing the standing pipe from being damaged by holding the holding piece 33 or holding the holding piece 33, the frictional resistance between the thin layer 34 and the standing pipe is used to improve the mounting stability of the caliper brake fixture 10 to the bicycle. .

  The fitting recess 4 is formed in the head 11 of the support rod 1. The fitting recess 4 of the present embodiment has a cylindrical concave curved surface at the back so that the fitting recess 4 can be fitted to the bridge of the bicycle seat stay with almost no gap. And the thin layer 41 which consists of urethane rubber is affixed inside the fitting recessed part 4, and while preventing the bridge | bridging from being damaged by fitting of the fitting recessed part 4, the frictional resistance between the thin layer 41 and the bridge Is used to improve the mounting stability of the caliper brake mounting tool 10 to the bicycle.

  As shown in FIGS. 1 and 2, the rod length adjusting means 5 includes the slot 51 formed on the other end of the support rod 1, a slide recess 52 formed on the support rod 1 along the slot 51, and A fastening hole 53 formed from the outer surface of the abutting portion main body 31 to the insertion hole 32, a fastening bolt 54 having a threaded portion inserted into the fastening hole 53 and the slot 51, and a stop in the insertion hole 32. The fastening nut 55 is screwed onto the fastening bolt 54. A fixing nut 55 made of a well-known hexagonal nut is engaged with the slide recess 52, and the slide recess 52 can slide in the axial direction but cannot rotate.

  If the fastening bolt 54 of the rod length adjusting means 5 is loosened, the abutting portion main body 31 can be appropriately slid along the axial direction of the support rod 1. When the fastening bolt 54 is tightened, the abutting portion main body 31 can be fixed at a desired position of the support rod 1. By operating the rod length adjusting means 5 in this way, the fitting recess 4 formed in the head 11 of the support rod 1 and the abutting portion 3 formed in the abutting portion main body 31 as necessary. The distance can be changed and adjusted as appropriate. In the rod length adjusting means 5 of the present embodiment, as shown in FIG. 2, when the fastening bolt 54 is loosened, the enlarged head of the fastening bolt 54 is formed at the opening of the fastening hole 53. Since the fixing nut 55 is in surface contact with the stepped portion 55 and in contact with the bottom of the slide recess 52, the abutting portion main body 31 is rotationally displaced about the axis of the support rod 1 before and after the rod length adjustment operation. There is nothing.

  As shown in FIGS. 1 and 3, the holding interval adjusting means 6 includes a slit portion 61 formed from the middle portion to the abutting portion 3 so as to bisect the end portion of the abutting portion main body 31. An insertion hole 62 opened in one of the divided abutment body 31, a screw hole 63 carved in the other of the divided abutment body 31, and an insertion hole 62 from the outside of the abutment body 31. The adjustment bolt 64 is inserted into the screw portion 63 and screwed into the screw hole 63. If the adjusting bolt 64 of the holding interval adjusting means 6 is tightened, the gap interval of the slit portion 61 can be reduced, and the interval between the pair of holding pieces 33 provided at both ends of the abutting portion 3 is reduced. be able to.

  Hereinafter, the procedure for mounting the rear wheel caliper brake 100 using the caliper brake mounting tool 10 of the present embodiment will be described with reference to FIGS.

  First, as shown in FIG. 4, the caliper brake 100 to be attached to the bicycle is previously fixed to the fixing portion 2 of the caliper brake attachment 10. Next, as shown in FIG. 5, the caliper brake fixture 10 integrated with the caliper brake 100 is inserted between the pair of left and right seat stays 210 of the bicycle 200 from the abutting portion 3, and the fitting recess 4 is inserted into the bicycle. 200 bridges 220 are fitted so as to be covered from above.

  Then, as shown in FIG. 6, the abutting portion 3 of the caliper brake attachment 10 is lifted upward while the fitting recess 4 is fitted to the bridge 220, and this abutting portion 3 is raised to the standing pipe 230 of the bicycle 200. The vertical pipe 230 is held by the pair of holding pieces 33.

  Thus, as shown in FIG. 7, when the abutting portion 3 is abutted against the standing pipe 230 in a state where the fitting recess 4 of the caliper brake fixture 10 is fitted to the bridge 220, the abutting portion 3 and the standing pipe are arranged. The caliper brake 100 for braking the rear wheel 240 can be securely attached to the bicycle 200 due to the frictional force caused by the tension of the support rod 1.

  Moreover, as shown in FIG. 7, the force F applied to the brake shoe 103 of the caliper brake 100 during braking of the rear wheel 240 acts in a direction in which the fitting recess 4 and the bridge 220 are more reliably fitted. Further, the force is transmitted as a force G for further lifting the abutting portion 3 with the fitting recess 4 as a fulcrum. Therefore, according to the caliper brake mounting tool 10, the mounting stability at the time of running braking of the bicycle 200 is excellent.

  As described above, according to the caliper brake fixture 10 of the present embodiment, the rear wheel braking can be performed very simply by fitting the fitting concave portion 4 to the bridge 220 and then abutting the abutting portion 3 against the standing pipe 230. The caliper brake 100 can be attached to the bicycle 200, and there is no need for trouble in attaching work as in the prior art.

  Moreover, according to the caliper brake fixture 10 of this embodiment, when the fitting of the fitting recess 4 is shifted in the left-right direction in the bridge 220, the abutting portion 3 is reliably abutted against the standing pipe 230. Therefore, the misalignment of the fitting operation of the fitting recess 4 can be easily grasped and can be easily corrected. In other words, according to the caliper brake mounting tool 10, the caliper brake 100 with respect to the bicycle 200 can be secured by simply performing the fitting operation of the fitting recess 4 with respect to the bridge 220 and the abutting operation of the abutting portion 3 with respect to the standing pipe 230. The position in the left-right direction can be determined. Therefore, once the position of the caliper brake 100 with respect to the bicycle is adjusted, it is not necessary to adjust the position of the brake every time the caliper brake 100 is attached thereafter.

  Further, according to the caliper brake mounting tool 10 of the present embodiment, the caliper brake 100 is attached by fitting the fitting recess 4 into the bridge 220, so that the bridge is attached to the bridge, for example, like a bicycle for bicycles. An existing caliper brake can be easily attached to a bicycle that does not have a through hole for inserting a caliper brake mounting bolt. Of course, an existing caliper brake can be attached to a general bicycle in which a through hole for inserting a caliper brake mounting bolt into the bridge is opened. Furthermore, an existing caliper brake can be attached to a bicycle having a through-hole for attaching a cantilever brake to a bicycle seat stay as long as a bridge exists.

  Further, the caliper brake fixture 10 of the present embodiment is provided with the rod length adjusting means 5, so that the abutting portion 3 and the abutment portion 3 are arranged according to the distance between the standing pipe and the bridge of each bicycle to which the caliper brake is to be attached. The distance from the fitting recess 4 can be appropriately changed, and the versatility is excellent.

  Moreover, in the caliper brake fixture 10 of the present embodiment, since the abutting portion 3 is provided with a pair of holding pieces 33 for holding the standing pipe 230, the abutting portion 3 projects against the standing pipe 230. The contact state can be maintained more stably. Further, the mounting stability can be further improved by utilizing the frictional resistance between each holding piece 33 and the standing pipe 230.

  Moreover, since the caliper brake attachment 10 of the present embodiment includes the holding interval adjusting means 6, after the abutting portion 3 is abutted against the standing pipe 230, the adjustment bolt 64 is tightened. The standing pipe 230 can be positively clamped by the pair of holding pieces 33. Accordingly, the caliper brake 100 can be stably attached to the bicycle 200. In addition, since the fastening operation | work of the adjustment bolt 64 can be performed independently of the position adjustment work of the caliper brake 100, it does not take time to fasten the adjustment bolt 64.

  Although the caliper brake fixture 10 of the present embodiment has been described above, the present invention can be implemented in other forms.

  For example, in the above-described embodiment, the abutting portion 3 is formed at the end of the abutting portion main body 31 that is slidably provided on the support rod 1, but the present invention is not limited to this. The other end of the support rod 1 may be integrally formed. Further, the abutting portion 3 does not necessarily have to be formed in a concave curved surface shape having an inner cylindrical shape, and may be formed in a bifurcated shape such as a pierced crotch. The abutting portion preferably has a recess to reliably abut the rod-like vertical pipe, but various design changes are possible in consideration of the mounting operability of the caliper brake, the overall design of the fixture, etc. . Moreover, in the said embodiment, although the holding piece 33 is provided in the abutting part 3, if the abutting part 3 can be reliably abutted on a standing pipe, it is not necessarily required.

  In addition, the present invention can be implemented in a mode in which various improvements, corrections, and modifications are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. In addition, any invention specific matter may be replaced with another technology within a range where the same action or effect occurs, and the integrally configured invention specific matter is constituted by a plurality of members. Alternatively, the invention specific items configured by a plurality of members may be implemented in an integrated configuration.

It is a general view of the caliper brake fixture of this embodiment, (a) is a side view, (b) is a top view. It is the sectional view on the AA line of FIG.1 (b). It is the BB sectional drawing of FIG.1 (b). It is a side view explaining the attachment procedure of the caliper brake by the caliper brake attachment tool of this embodiment. It is a side view explaining the attachment procedure of the caliper brake by the caliper brake attachment tool of this embodiment. It is a side view explaining the attachment procedure of the caliper brake by the caliper brake attachment tool of this embodiment. It is a side view explaining the state which attached the caliper brake with the caliper brake fixture of this embodiment. It is a front view of the conventional caliper brake. It is a fragmentary perspective view which shows the bridge which connects a pair of seat stays of the conventional bicycle. It is a partial side view explaining the state which attached the caliper brake for the conventional rear-wheel braking to the bicycle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Caliper brake fixture 1 Support rod 2 Fixing part 3 Abutting part 33 Holding piece 4 Fitting recessed part 5 Rod length adjustment means 6 Holding space adjustment means 100 Caliper brake 200 Bicycle 210 Seat stay 220 Bridge 230 Standing pipe 240 Rear wheel

Claims (4)

A mounting tool for detachably attaching a caliper brake for a rear wheel to a bicycle,
A support rod;
A fixing portion provided on one end side of the support rod and capable of fixing the caliper brake;
An abutting portion provided on the other end side of the support rod and capable of abutting against a standing pipe of the bicycle;
A fitting recess provided between the fixing portion and the abutting portion of the support rod, and capable of fitting into a bridge connecting the pair of left and right seat stays of the bicycle;
A caliper brake fitting for rear wheels of bicycles equipped with   The bicycle rear wheel caliper brake attachment device according to claim 1, further comprising a rod length adjusting means capable of changing a distance between the abutting portion and the fitting concave portion on the support rod.   The bicycle rear wheel caliper brake attachment device according to claim 1 or 2, further comprising a pair of holding pieces for holding the bicycle standing pipe at the abutting portion. The bicycle rear wheel caliper brake attachment device according to claim 3, further comprising holding interval adjusting means capable of changing an interval between the pair of holding pieces.

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