JPS6236720Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a structure for attaching bicycle parts to a frame. Specifically, the present invention has a first band piece, and the first band piece is attached to a base member on which a bicycle part such as a front derailleur is mounted. A second band piece is supported at one end of the second band piece, which faces the base member and has an engaging part that engages with the base member. The present invention relates to a mounting structure for mounting on the frame.

Generally, this type of mounting structure includes a first band piece provided on the base member and a second band piece facing the first band piece.
A rectangular through hole is provided at one end of the base member, and an engaging portion that engages with the through hole is provided at one end of the second band piece, and the through hole of the engaging portion is provided with a rectangular through hole. One end of the second band piece is locked to the base member by engagement with the base member, a tightening seat is provided at the other end of the second band piece and the tip of the first band piece, and a tightening seat is provided between these tightening seats. supporting bolts,
By tightening the tightening bolt, the second band piece is pressed to one side of the first band and fixed to the frame.

However, the engaging portion of the second band piece has a narrow part cut out in a concave shape on both widthwise end surfaces of the second band piece and having a length shorter than the through hole, and a narrow part that is longer than the vertical width of the through hole. The through hole of the base member has a vertical width shorter than the length between the end faces of the protrusion of the engaging portion, and a diagonal length of the through hole of the base member that is shorter than the length between the end surfaces of the protruding portion of the engaging portion. The second band piece is formed to be longer than the length between the end faces of the protruding part of the joint part, and when the engaging part is engaged with the through hole, the second band piece is inclined with respect to the first band piece, so that the engaging part is Insert the second band piece into the through hole from a diagonal position of the through hole, move the second band piece to a position facing the first band piece, and engage the protrusion of the engaging part with the inner surface of the base member around the through hole. However, when the bicycle component is attached to the frame, the second band piece moves to a position where it is inclined with respect to the first band piece, and the engaging part of the second band piece is aligned with the through hole. In many cases, it moved to the insertion position into the through hole and then pulled out from the through hole. As a result, it was time-consuming to attach bicycle parts to the frame, and work efficiency was poor.
Also, the second band piece was sometimes lost.

The present invention was devised in view of the above points, and an object thereof is to have a simple structure that allows the engaging portion of the second band piece to be inserted into and engaged with the through hole of the base member, and to have a simple structure. The object of the present invention is to provide a mounting structure that can prevent the joint from being pulled out of the through hole.

Therefore, the present invention has a base member having a first band piece and on which a bicycle component is attached, and having an engaging part facing the first band piece and engaging with the base member at one end. supporting a second band piece;
A mounting structure for attaching the bicycle component to the frame by fitting the first and second band pieces to the frame, wherein the engaging portion of the second band piece can be inserted into the base member, and , a through hole is provided that is engageable, and the bicycle component mounted on the base member is provided with a blocking means for preventing the engaging portion inserted into the through hole from moving to the insertion position. It is something to do.

Embodiments of the mounting structure of the present invention will be described below based on the drawings.

The illustrated mounting structure forms a base member 1 having a semicircular first band piece 2, forms a semicircular second band piece 9 facing the first band piece 2, and forms a semicircular second band piece 9 that faces the first band piece 2. An engaging portion 91 is provided at one end of the band piece 9 by bending the end portion outward, and by engaging the engaging portion 91 with the base member 1, the second
One end of the band piece 9 is locked to the base member 1, and the second
Tightening seats 92 and 21 are provided at the other end of the band piece 9 and the tip of the first band piece 2, respectively, and a tightening bolt 30 is supported between these tightening seats 92 and 21. By tightening, the second band piece 9 is pressed toward the first band piece 2, and the base member 1 is fastened and fixed to the bicycle frame F, for example, a seat tube. still,
Although the first band piece 2 is formed integrally with the base member 1, it may be formed separately and fixed by a fixing means such as welding or a set screw. or,
The engaging portion 91 of the second band piece 9 is formed by notching both end faces in the width direction of the second band piece 9 in a concave shape to provide a narrow portion 91a and a protruding portion 91b, as shown in FIG. .

Further, a pair of link members 5 and 6 are pivotally attached to the base member 1 via a pair of pivot pins 3 and 4, for example, as shown in the figure, and a pair of link members 5 and 6 are attached to the tips of these link members 5 and 6. The chain guide 10 is swingably supported via the pivot pins 7 and 8.

For example, a rectangular through hole 11 is provided at the end of the base member 1 on the side of the first band piece 2, into which the engaging part 91 of the second band piece 9 can be inserted and engaged. For example, the link member 5 supported by the base member is provided with a blocking means for preventing the engaging portion 91 inserted into the through hole 11 from moving to the insertion position 11a, so that the engaging portion 91 is pulled out from the through hole 11. I tried to prevent it from coming out.

In the above configuration, the through hole 11 of the base member 1 is formed into a rectangular shape, for example, as _shown in FIG.
The length H ₂ is shorter than the length H 2 between the end faces of the protrusion, and the diagonal length H ₃ is longer than the length H ₂ between the end faces of the protrusion of the engaging portion 91, and this diagonal position is 91 is set at the insertion position 11a, and the above-mentioned upper and lower width portions 11b are set at the engagement position of the above-mentioned engaging portion 91.

When attaching the second band piece 9 to the base member 1, the second band piece 9 is inclined with respect to the first band piece 2, and the engaging portion 91 is inserted into the through hole from the insertion position 11a of the through hole 11. 11, and insert this second band piece 9 into the first band piece 2.
by moving the protrusion 91b of the engaging portion 91 to a position facing the upper and lower width portions 11b of the through hole 11,
Specifically, it is engaged with the inner surface of the base member 1 around the through hole 11. The through hole 11 may be formed in a rectangular shape, or may be formed in a pentagonal, hexagonal, T-shaped, circular, or oval shape, and its shape is not particularly limited. In short, any shape is sufficient as long as the engaging portion 91 can be inserted and the inserted engaging portion 91 can be engaged.

Further, the blocking means for preventing the engaging portion 91 from coming out of the through hole 11 is provided at the end of the link member 5 on the support side to the base member 1, as shown in FIGS. A blocking piece 50 extending in the direction of 11 is integrally formed, and this blocking piece 50 is opposed to the engaging part 91 inserted into the through hole 11 at a predetermined interval, so that the engaging part 91 is inserted into the through hole 11. This prevents it from moving to the insertion position 11a.
The blocking piece 50 is arranged to face the engaging part 91 at a predetermined distance so that the second band piece 9 can be moved toward and away from the first band piece 2 when the derailleur is fixed to the frame. However, the blocking piece 50 may also be brought into contact with the engaging portion 91. In this case, for example, the blocking piece 50 is formed separately from the link member 5 and pivotably supported,
A spring is interposed between the blocking piece 50 and the link member 5 so that the second band piece 9 can be rotated in a direction toward and away from the first band piece 2 against the spring. It is. In addition to being provided on the link member 5, the blocking means may be provided on the other link member 6, or may be formed integrally with the link members 5 and 6, or may be formed separately by welding, set screws, etc. It may be attached by an attachment means or may be formed by a screw member such as a screw, and the point is that the engagement portion 91 inserted into the through hole 11 is inserted into the insertion position 11.
There is no particular limitation on the means as long as it prevents movement to a.

Note that the link member 5 provided with the blocking piece 50 is
For example, one end is supported by the pivot pins 3 and 7 supported on the base member 1, and in this state, the engaging portion 91 is inserted into the through hole 11, and then the pivot pin 3,
By caulking one end of the link member 7, the link member 5 is supported on the base member 1.

Further, in the figure, 31 is a return spring interposed between the base member 1 and the link member 6, and 32, 32 are adjustment screws screwed onto the base member 1 to regulate the swing range of the link member 5. , 33 is a fixture for fixing one end of the operating wire to the extended end of the link member 6.

Therefore, in order to attach it to the bicycle frame, the tightening screw 3 screwed into the tightening seat 21 of the first band piece 2 is
0 from the tightening seat 21 and remove the second band piece 9.
is rotated in a direction away from the first band piece 2, and the frame F is inserted between the second and first band pieces 9, 2, and the second band piece 9 is brought close to the first band piece 2. direction, the tightening screw 30 supported on the tightening seat 92 of the second band piece 9 is screwed into the tightening seat 21 of the first band piece 2, and the first and second band pieces 2 and 9 are clamped and fixed to the frame F. During this fixing work, the engaging portion 91 of the second band piece 9 is prevented from moving to the insertion position 11a of the through hole 11 by the blocking means provided on the link member 5 or 6. It is possible to reliably prevent the second band piece 9 from being pulled out from the through hole 11, and to prevent the second band piece 9 from falling off.

As described above, the present invention provides a base member having a first band piece and on which a bicycle component is mounted, a through hole into which the engaging portion of the second band piece can be inserted and engaged. Since the bicycle component mounted on the base member is provided with a blocking means for preventing the engaging portion inserted into the through hole from moving to the insertion position, that is, the bicycle component can be attached to the bicycle component using the bicycle component. By providing a blocking means that prevents the engaging portion from moving to the insertion position, the engaging portion is prevented from coming out of the through hole when the bicycle component is attached to the frame, and the second It is possible to prevent the band piece from falling off from the first band piece. Therefore,
This makes it easier to attach bicycle parts to the frame without losing the second band piece, and work efficiency can be improved accordingly.

Moreover, apart from the band piece that attaches the bicycle part to the frame, there is no special member to prevent the bicycle part from falling off.In other words, since the bicycle part which is attached to the base member is used, the band piece Since the structure for preventing falling off can be made simple without complicating the structure, it is possible to prevent the band pieces from falling off without increasing costs, and furthermore, the work of installing bicycle parts does not become complicated. It's easy to do.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment in which the mounting structure of the present invention is used in a front derailleur, Fig. 2 is a side view thereof, Fig. 3 is a plan view, and Fig. 4 is a partially omitted cross-sectional plan view. , FIG. 5 is an exploded perspective view, FIG. 6 is a side view of the main parts, and FIG. 7 is an explanatory diagram showing a state in which the engaging portion is inserted into the through hole. DESCRIPTION OF SYMBOLS 1... Base member, 11... Through hole, 2... First band piece, 9... Second band piece, 91... Engaging portion, 50... Blocking means.

Claims (1)

[Scope of utility model registration request] A second band piece that faces the first band piece and has an engaging portion at one end that engages with the base member is supported on a base member that has a first band piece and on which bicycle parts are attached. and a mounting structure in which the bicycle component is attached to the frame by fitting the first and second band pieces to the frame, wherein the engaging portion of the second band piece can be inserted into the base member. and, in addition to providing an engageable through hole, the bicycle component attached to the base member is provided with a blocking means for preventing the engaging portion inserted into the through hole from moving to the insertion position. Features a structure for attaching bicycle parts to the frame.