JPH0133431Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bicycle pedal, and more particularly to a bicycle pedal in which a pedal body is rotatably supported on a pedal shaft via a pair of bearings.

Conventionally, this type of pedal has a pedal body that includes a pair of side plates extending in the front and back direction via bearings on both sides of a pedal pipe through which the pedal shaft is inserted. The pedals are mounted by extending the mounting bolts, inserting the pedal pieces into each of the bolts, and tightening the nuts.

As you can see, many parts are required for the whole,
Therefore, parts management is troublesome, the number of man-hours for assembling the parts is extremely large, and the assembly time is long, which is economically disadvantageous.

Therefore, in order to solve this problem, the pedal body includes a pipe part through which the pedal shaft is inserted and the bearing is attached, a side frame part provided on both sides of the pipe part, and a pedal body provided between the front and rear parts of the side frame part. With a piece,
It has been proposed that the pedal body be formed by integral molding of synthetic resin, but as a mold, two split molds are used to mold the upper and lower halves of the pedal body.
A split mold was required to form the pipe hole of the pipe portion through which the pedal shaft was inserted and the bearing was housed, making the molding mold extremely complex as a whole, and the above-mentioned problem could not be fundamentally solved.

The purpose of the present invention is to form a main body made of three parts: a main body made of synthetic resin and having a tread surface, and a pair of side frames made of metal and having a bearing part and a press-fit tube. with two split molds or one press mold, and each side frame with two
The molds can be formed separately using two split molds, and the side frames are arranged on both sides of the main body, and are integrated by joining the press-fit tubes and can be engaged with each other, so that the entire mold can be formed. To provide an economically advantageous bicycle pedal which can be made extremely simple and inexpensive, and which can reduce the number of parts and which can be assembled easily and quickly.

The structure of the present invention is a bicycle pedal in which a pedal body is rotatably supported on a pedal shaft via a pair of bearings. Becomes,
A pair of side frames each having a bearing portion and a press-fit tube are separately formed, each of the side frames is arranged on both left and right sides of the body main body, and the pedal body is formed by combining the press-fit tubes into one body. In addition, the present invention is characterized in that an engaging means is provided at opposing portions of the body main body and each side frame to engage with each other by coupling the press-fit tube.

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

In the drawings, reference numeral 1 denotes a pedal body, through which a pedal shaft 2 is inserted, and is rotatably supported by the pedal shaft 2 via a pair of bearings 3, 3.

Therefore, the gist of the present invention is that the pedal body 1 is made of synthetic resin, and has treads 11 and 12 at the front and rear.
a body main body 4 integrally formed with a pair of side frames 7 made of metal and having a bearing portion 5 and a press-fit tube 6;
8 are formed separately, and the side frames 7 and 8 are arranged on both left and right sides of the body main body 1, and are formed so as to be integrated by coupling the press-fit tubes 6 and 6. An engaging means 9 is provided at a portion facing each of the side frames 7 and 8 to engage with the press-fit cylinder by coupling.

The main body 4 of the pedal body 1 shown in FIGS. 1 to 6 is formed so that the upper surface shape is the same even when both the front and back surfaces face upward. A pivot member 41 having a fitting hole 41a for the cylinder 6 is disposed, and at the front of the pivot member 41, U-shaped first and second frame members 42 extend forward from the upper and lower parts of both sides, respectively. 43, and at the rear of the pivot member 41, U-shaped third and fourth frame members 4 extending rearward from the upper and lower parts of both sides, respectively, are provided.
4, 45 are provided, and the first and second frame members 42, 4
3 and between the rear parts of the third and fourth frame members 44 and 45, respectively, and a reflector (not shown) can be inserted and held from the side through the front and rear surfaces of the thus connected members. guide groove 13,1
form 3.

Further, when the first and third frame members 42 and 44 face upward, the tread surfaces 11 and 12 are formed at the front and rear parts of each frame member 42 and 44, and the second and fourth frame members 43 , 45 is upward,
The tread 1 is attached to the rear and front parts of each frame member 43, 45.
2, 11 are formed. And the rear tread 12
There are two rows horizontally in the front and back, and the front one is
A hole h penetrating vertically is provided on the periphery except for the front side, and is formed so that it can be bent into the hole h by stepping on it.

Further, when the first and third frame members 42, 44 are facing upward, and the second and fourth frame members 43,
When the tow clip attachment members 45 are facing upward, upwardly facing plate-shaped tow clip attachment members 46, 4 are installed between both sides of the second frame member 43 and the third frame member 44, which are in a forward facing low position.
6, and these members 46, 46 are provided with a guide groove 46a for guiding the tow clip mounting screw from the lower end to the upper end.

Furthermore, the engaging portions 91 and 92 of the engaging means 9 for the side frames 7 and 8 are formed along both sides of the body main body 4 formed as described above. That is, the engaging portions 91 and 92 form the both sides of the first to fourth frame members 42 to 45 into a rectangular cross section with parallel upper and lower surfaces, and 42, 43 and the third and fourth frame members 4
4 and 45 are arranged vertically at equal intervals, and the pivot member 41 side of each set is bent inward, so that the bent portion and the side surface of the pivot member 41 are A substantially U-shaped concave engaging portion a ₁ is formed, and the front and rear sides of the concave portion a ₁ are inclined inward to form front and rear engaging portions b ₁ and c ₁ . Outwardly protruding engaging portions d ₁ and d ₁ are formed at the front and rear ends of the joining portions b ₁ and c ₁ , respectively.

Pedal body 1 is formed as described above.
Although the overall shape is not described in detail, the first and third frame members 42, 44 and the second frame member are indicated by arrows in FIG.
It is formed with care in mind so that it can be molded using two split molds with the joint line X between them and the fourth frame members 43 and 45.

Next, the side frames 7 and 8 are provided with pivot members 71 and 81 having the press-fit tubes 6 and 6 at intermediate portions in the front and rear directions, respectively, so that the pedal shaft 2 can be inserted therethrough, and the pivot members The bearing portions 5, 5 are attached to 71, 81.
is formed into an enlarged diameter shape. In addition, this pivot member 71,
At 81, U-shaped frame members 72, 82 are provided forward from the upper and lower parts of the front side, and the upper and lower parts of the rear side are provided.
U-shaped frame members 73 and 83 are provided rearward from the bottom. Then, on the inside of each of the side frames 7 and 8 formed in this way, engaging portions 9 provided on both sides of the main body 4 are provided.
1, 92 of the engaging portion 9 of the engaging means 9;
Form 3,94.

As shown in FIG. 11, the engaging portions 93, 94 are fitted into the recessed engaging portions _a1 of the engaging portions 91, 92 inwardly from the upper and lower portions of the pivot members 71, 81. A convex engaging portion _a2 is formed, and _the front and rear engaging portions b of the engaging portions 91 and 92 are formed by the frame members 72, 82, 73, and 83 on the front and rear sides of the engaging portion a2. ₁ , c ₁ are fitted into each other, rear side engaging portions b ₂ , c ₂ are formed, and the aforementioned engaging portions are formed at the front and rear end portions of the engaging portions b ₂ , c ₂ . The concave engaging portions d ₂ and d ₂ are formed into which the protruding engaging portions d ₁ and d ₁ of the portions 91 and 92 fit together.

Each side frame 7, 8 has one press-fit tube 6.
The other press-fit tube 6 is attached to the tip side of the
A small-diameter portion 62 that can be fitted is formed on the tip side of the press-fit tubes 6, 6, and is located on both sides of the main body 4.
into the insertion hole 41a of the main body 4,
By fitting the two ends together and bringing the other end into contact with one stepped portion 61, the main body 4 is sandwiched and engaged by the engaging means 9, and the pedal body 1 is integrally formed. We will do what we can.
Also, during the press-fitting work, the bearing portions 5, 5 of the both side frames 7, 8 are provided with doves 32 for receiving the balls 31 of the bearing 3.
This allows them to be press-fitted at the same time. Also, when the press-fitting tubes 6, 6 are press-fitted, both side frames 7, 8
The distance between them is set to a value commensurate with the width dimension of the main body 4, and is determined by taking into account the thermal expansion of the synthetic resin used for the main body 4.

Although the overall shape of the both-side frames formed as described above will not be described in detail, in FIGS.
Care was taken to form the mold so that it could be cast using two split molds.

In addition, 74 and 84 are the frame members 7 of the side frames 7 and 8.
These are the protrusions on the treads provided at 2, 73, 82, and 83.

Therefore, in the above configuration, the main body 4 and both side frames 7 and 8 of the pedal body 1 are not made into three separate molds as a manufacturing mold,
Only two molds are required, and the structure of the mold is extremely simple, reducing mold manufacturing time, making it inexpensive, less likely to break down, and easy to maintain, and also shortening the manufacturing time for each part. It will become.

Further, when assembling each part, the press-fit tubes 6, 6 are press-fitted, and at this time, the body main body 4 and the side frames 7, 8 are simply engaged by the engaging means 9, and the integral pedal body 1 is assembled. Moreover, during this press-fitting operation, the dowel 32 of the bearing 3 can also be assembled at the same time, and the reflector can also be assembled at the same time, making it possible to easily and quickly complete the assembly of the parts as a whole.

In addition, since the main body 4 is made of synthetic resin,
Not only can the treads 11 and 12 be made to have good fitting properties, but the metal side frames 7 and 8 are provided on both sides, which has the effect of reinforcing the main body 4 and prevents the main body 4 from thermally expanding. Also, the length between the dogs 32, 32 of the bearings 3, 3 installed inside the side frames 7, 8 can be made constant, and the pedal body 1 can always be maintained in a good rotatable state with respect to the pedal shaft 2.

Furthermore, by combining body main bodies 4 of different designs with the side frames 7 and 8, it is possible to easily manufacture a wide variety of products.

Although not described in detail, the body main body 4 can also be formed by extrusion molding, and at this time, by forming a hole passing through it in the lateral direction, it can also be formed as an engagement part of the engagement means 9. In this case, the mold cost can be significantly reduced.

As described above, according to the present invention, the main body and the
By simply forming the three parts with the paired side frame and by press-fitting the press-fit tube provided on the side frame, an integrated pedal body can be formed without using any special engaging parts. During work, the bearing can be assembled into the bearing part of the side frame at the same time, and the parts can be easily and quickly assembled as a whole, and three split molds are used for both the main body and each side frame. It can be manufactured using a simple manufacturing mold, and the cost of parts can be reduced, making it extremely economically advantageous overall.

Furthermore, metal side frames are placed on both sides of the main body, which has treads made of synthetic resin, so it provides good fitting properties to the treads, and the main body can be protected by the frames on both sides. Scratches can be prevented, and the bearing spacing can be maintained constant even if the main body expands thermally.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a front view of the assembled state, FIG. 2 is a sectional view taken along the line of FIG. 1, and FIG. 4
The figure is a front view of the main body, Figure 5 is a side view of Figure 4, Figure 6 is a sectional view taken along the line shown in Figure 4, Figure 7 is a front view of the side frame on the left side of Figure 1, and Figure 8. is its side view, Figure 9 is a sectional view taken along the line of Figure 8, and Figure 10 is its side view.
The figure is a front view of the right side frame in FIG. 1, and FIG. 11 is a side view thereof. 1...Pedal body, 2...Pedal shaft, 3...
Bearing, 4... Main body, 5... Bearing part, 6...
Press-fit cylinder, 7, 8...side frame, 9...engaging means.

Claims (1)

[Scope of utility model registration request] A bicycle pedal in which a pedal body is rotatably supported on a pedal shaft via a pair of bearings,
A main body made of synthetic resin and integrally formed with front and rear treads, and a pair of side frames made of metal and each having a bearing portion and a press-fit tube are formed separately, and each of the side frames is connected to the main body of the body. engaging means disposed on both left and right sides of the pedal body and integrally formed by the combination of the press-fit tubes to form the pedal body, and engaged with opposing portions of the body main body and each side frame by the combination of the press-fit tubes; A bicycle pedal characterized by being provided with.