JPS6228549Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a bicycle pedal whose treadle can be reduced.

This invention was made primarily for the purpose of making the width of the bicycle as narrow as possible by reducing the width of the bicycle pedal, thereby making it easier to carry, transport, and store.

This invention will be explained below with reference to the drawings which are an example of its implementation. Reference numeral 1 indicates a bicycle pedal of this invention, which is mainly composed of a short petal frame 2 and a movable auxiliary frame 3 movably supported by the short petal frame 2.

The short petal frame 2 is made of, for example, a light alloy block, and its front and rear widths are reduced to half or less of a normal petal frame, and a bearing hole 4 is provided through the center in the front and back, and the base end is the threaded part 5a
It is rotatably supported on a petal main shaft 5 formed in a. Further, this short petal frame 2 has a rectangular cross section, and L-shaped protrusions 6, 6 are provided on the upper and lower edges of both sides, and the corresponding surfaces are formed into guide and support grooves 7, 7, and the support grooves Accommodating holes 8, 8 are provided on the side surfaces between 7, 7, and locking shafts 10, 10, which are biased outward by the action of internal expansion springs 9, 9, are accommodated.

The movable auxiliary frame 3 has a band-shaped plate formed into a U-shape,
Insert the mutually parallel side frame walls 3a, 3a into the guide support grooves 7, 7 of the short petal frame 2,
The movable auxiliary frame 3 is mounted so that it can be freely drawn out in the front and back, and engagement elongated holes 11, 11 are provided in the frame walls 3a, 3a on both sides, and the locking shafts 10, 10 are fitted into these holes, respectively, so that the width of the drawer of the movable auxiliary frame 3 is set to a predetermined width. be regulated.

In addition, the tips of the locking shafts 10, 10 are arranged at middle stages 10a, 10a, front stages 10b, 10b and 2 as shown in the figure.
When the shaft diameter is reduced in the step, the engagement elongated hole 1
1 and 11, both ends of the engagement elongated hole are fitted with hole edges 11a and 11 that fit with the middle stages 10a and 10a.
In a, hole edges 11b, 11b are formed in the middle to match the preceding stages 10b, 10b, and when the movable auxiliary frame 3 is pulled out to the maximum extent with respect to the short petal frame, and when it is pushed in to the minimum extent. to lock the locking shaft 10,
The movable auxiliary frame 3 may be fixed in this state.

The upper and lower surfaces of the short petal frame 2 are provided with treads 2a and 2b between the edges on both sides, and auxiliary treads 3b are provided on the upper and lower surfaces of the tip of the movable auxiliary frame 3, and when the movable auxiliary frame 3 is pulled out, A petal tread similar to a normal petal is obtained.

This device is as described above, so the movable auxiliary frame can be pulled out and extended into a normal petal treadle, and then pushed in the opposite direction to reduce the size to about half the size of a normal petal treadle. By applying this to general bicycles, parking spaces can be made smaller. In particular, if applied to a folding bicycle, it will be effective in reducing the width, making it extremely convenient to carry, transport, and store.

In addition, the operation of enlarging and reducing the petal is easy and hassle-free, and like conventional fixed petals, the top and bottom are treads, making it both easy to use and robust.
It is also innovative in terms of its sleek appearance.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention,
Figure 1 is a perspective view of the exterior when the treadle is enlarged normally, Figure 2 is a plan view with a partially cutaway section, Figure 3 is a side view, and Figure 4 is a front view of the petal frame alone. be. 1... This invented bicycle petal, 2... Short petal frame, 3... Movable auxiliary frame, 5... Petal main shaft, 7
... Guide support groove, 10 ... Locking shaft, 11 ... Engagement elongated hole.

Claims (1)

[Scope of utility model registration request] Guide bearing grooves are provided on the upper and lower sides of both sides of the short petal frame, which has treads on both the upper and lower sides, to engage the upper and lower edges of the movable auxiliary frame, which is formed separately and has a U-shape in plan view. The upper and lower edges of the movable auxiliary frame are slidably engaged with the grooves, engagement elongated holes are provided in the side walls of the movable auxiliary frame in the horizontal direction, and expansion springs are installed in the elongated holes on both sides of the petal frame, respectively. It is characterized by engaging the pushed-out locking shaft, pressing the large diameter base surface of the locking shaft against the inner hole edge of the engagement elongated hole, and providing auxiliary treads on the upper and lower surfaces of the outer end of the movable auxiliary frame. A bicycle pedal.