WO2014034983A1

WO2014034983A1 - Bicycle pedal assembly

Info

Publication number: WO2014034983A1
Application number: PCT/KR2012/007018
Authority: WO
Inventors: 정철상; 이상재
Original assignee: 주식회사 나눅스
Priority date: 2012-08-31
Filing date: 2012-08-31
Publication date: 2014-03-06
Also published as: DE112012006857T5

Abstract

The present invention relates to a bicycle pedal assembly comprising a binder to which a cleat of a cycling shoe is combined. According to embodiment of the present invention, the bicycle pedal assembly comprises: a pedal shaft; a pedal main body which rotates around the pedal shaft and of which both surfaces are capable of supporting a cleat-mounted cycling shoe; a bearing housing which is buried in the section corresponding to a part of the length of the pedal main body inside the pedal main body along the direction of the shaft line of the pedal main body and accommodates the pedal shaft; a pair of bearings mutually spaced from each other along the shaft line inside the bearing housing to rotate and support the pedal shaft; a pair of inner binders and a pair of outer binders having binding portions which are attached to the both surfaces of the pedal main body, respectively, and face each other along the shaft line to interlock with the cleat; a rotation support portion for supporting the pair of inner binders and the pair of outer binders to allow the rotation thereof along the shaft line; and resilient members for resiliently pushing each of the binders in the binding direction. Therefore, a slim bicycle pedal assembly for facilitating binding and unbinding of a cleat is provided.

Description

Bicycle pedal assembly

The present invention relates to a bicycle pedal assembly, and more particularly to a bicycle pedal assembly having a binder and a simple axial mounting structure to which the cleat of cycling is coupled.

Many recent bicycle pedal assemblies have a binder so that cycling cleats can be engaged. By combining the cleats and binders, cycling and pedals are firmly connected to each other to convert the energy applied by the user to the driving force of the bicycle as much as possible.

Regarding the bonding method of the binder and the cleat, various structures have been proposed, but in general, the operation of combining or separating the cleat and the binder requires skill, so it is very inconvenient and difficult for beginners to use. In addition, there is a problem that the assembly structure of the binder and the adjustment mechanism are relatively complicated, resulting in high manufacturing costs.

On the other hand, the pedal shaft of the conventional pedal assembly penetrates the entire length of the pedal body, so that the design and structural changes of the pedal body are greatly limited by the pedal shaft and its receiving structure, and in particular, the structural improvement of the binder for cleats There was a problem limited by the pedal shaft.

Accordingly, an object of the present invention is to provide a bicycle pedal assembly having a slim thickness while being able to easily and conveniently couple and release a cleat to a binder.

Another object of the present invention is to provide a pedal assembly which is simple in structure and easy to adjust.

The object according to the present invention is a pedal body having a pedal body, a pedal body having a lateral surface that rotates about the pedal shaft and can support a cleat-mounted cycling, and the pedal body along the axial direction of the pedal body. A bearing housing embedded in a portion of the pedal body in a length section, the bearing housing accommodating the pedal shaft, a pair of bearings spaced apart from each other in the bearing housing along the axial direction, and supporting the pedal shaft to rotate; A pair of inner binders and a pair of outer binders respectively attached to the both side surfaces of the pair and having a binding portion engaged with the cleats along the axial direction, the pair of inner binders and the pair of outer sides A rotation support part for supporting the binder to be rotatable along the axial direction, and burning the binders in the binding direction It is achieved by a bicycle pedal assembly that is characterized, including typically push the elastic member.

Here, the pedal body is made of a plastic material, the bearing housing is made of a metal material, the bearing housing may be embedded in the pedal body by insert injection. In addition, the bearing housing preferably includes a spacer portion for keeping the pair of bearings spaced apart. The pair of bearings may be combined with a ball bearing and a sliding bearing, wherein the ball bearing supports a free end region of the pedal shaft, and the sliding bearing supports the pedal shaft at a position spaced apart from the free end. It is desirable to. The stop nut may be coupled to a free end region of the pedal shaft to contact the ball bearing along the axial direction to prevent the pedal shaft from being separated. On the other hand, through the pedal body further comprises a fixing screw inserted into the bearing housing horizontally in the axial direction, the bearing housing preferably has a fixed female screw portion to which the fixing screw is fastened.

The binding portion of each binder is preferably spaced outward from the surface of the pedal body.

In addition, the pivot support portion preferably has an inner pivot pin for pivotally supporting the pair of inner binders and an outer pivot pin for pivotally supporting the pair of outer binders in common. Here, each of the binders may be formed independently to be independently supported on the corresponding pivot pin.

The elastic members are torsion coil springs, and preferably have a coil portion through which the pivot pin passes and an arm portion provided at both ends of the coil portion to push a pair of binders. Each of the elastic members may be provided with a tension control unit. Here, the tension adjusting unit preferably includes a slider in contact with at least one arm of the elastic member, and an adjusting screw for moving the slider.

According to the bicycle pedal assembly configured as described above, there is provided a bicycle pedal assembly having a slim thickness and easy attachment and release of the cleats.

In addition, there is provided a bicycle pedal assembly having a simple structure and easy elastic adjustment of a binder.

1 is an assembled perspective view of a bicycle pedal assembly according to the present invention;

2 is an exploded perspective view of the pedal shaft,

3 is a cross-sectional view of the pedal shaft along the axial direction;

4 is an exploded perspective view of the pedal body;

5 is a cross-sectional view of the pedal body along the axial direction;

6 and 7 are cross-sectional views for explaining the process of binding and release of the cleats.

Hereinafter, embodiments of the bicycle pedal assembly according to the present invention will be described in detail with reference to the accompanying drawings.

As can be seen in these figures, the bicycle pedal assembly has a pedal shaft 100 and a pedal body 200 rotatably coupled to the pedal shaft 100. Cycling is in contact with the upper and lower surfaces of the pedal body 200. The pedal shaft 100 protrudes toward the bicycle at the inner end of the pedal body 200 and is coupled to the pedal crank.

As shown in FIG. 3, the pedal body 200 is embedded with a bearing housing 120 along an axial direction. The bearing housing 120 is made of a metal material, and is embedded in the pedal body 200 by insert injection. In some cases, the pedal body 200 and the bearing housing 120 may be coupled to each other by assembling rather than inserting the insert.

The bearing housing 120 is present only in a partial length section of the pedal body 200 so that the structure and design of the pedal body 200 are not limited to the length of the bearing housing 120. Preferably, the length of the bearing housing 120 is less than half the length of the pedal body 200, and in the present invention, the length of the bearing housing 120 is less than 30-40% of the length of the pedal body 200. It is manufactured to be. The shorter the length of the bearing housing 120, the wider the design width and the wider the applicability.

The bearing housing 120 has a first bearing accommodation portion 126 and a second bearing accommodation portion 128 spaced apart from each other along the axial direction. The first bearing 130 and the second bearing 140 are accommodated in the first bearing accommodation part 126 and the second bearing accommodation part 128, respectively. The bearing housing 120 includes a spacer portion 122 between the

bearing bearing portions

126 and 128 to maintain the separation between the first bearing 130 and the second bearing 140. The spacer portion 122 has a smaller diameter than both bearing

accommodation portions

126 and 128, whereby the bearing housing 120 is pedaled along the axial direction after being integrally molded by the pedal body 200 and the insert injection. Departure from the main body 200 is prevented.

The first bearing 130 and the second bearing 140 are each composed of a ball bearing and a sliding bearing in the illustrated embodiment. As a result, the load of the pedal shaft 100 is distributed to the two bearings, and since the sliding bearing supports the surface contact over a large area, the endurance support is possible, and vice versa. Or both may be ball bearings, or both may adopt sliding bearings. In some cases, the first bearing 130 and the second bearing 140 may be roller bearing, needle bearing, or the like.

The pedal shaft 100 passes through the bearing housing 120 embedded in the pedal body 200 and is inserted into the pedal body 200 along the axial direction. The pedal shaft 100 has one end crank fastening portion 112 connected to a crank of the bicycle, and a stop nut fastening portion 114 at the free end region of the other end, respectively. Between the crank fastening portion 112 and the stop nut fastening portion 114, the first bearing column portion 116 and the second bearing column portion 118 to which the first bearing 130 and the second bearing 140 are respectively coupled. Is formed. The pedal shaft 100 is made of metal.

The stop nut 150 is fastened to the stop nut fastening part 114 of the pedal shaft 100 via the washer 160. The stop nut 150 is restricted to move outward in the axial direction by the first bearing 130 to regulate the pedal shaft 100 from being separated from the pedal body 200.

A fixing screw 170 is provided which penetrates the pedal body 200 from the outer surface of the pedal body 200 and is fastened to the bearing housing 120. A fixed female screw portion 124 corresponding to the fixed screw 170 is provided in the bearing housing 120. The bearing housing 120 is an insert injection together with the pedal body 200, but the thermal expansion coefficient of the bearing housing 120 made of metal and the pedal body 200 made of plastic may be different, and thus play may occur over time. have. The fixed screw 170 and the fixed female threaded portion 124 function to compensate for the clearance between the pedal body 200 and the bearing housing 120 even when such clearance occurs. Fixing screw 170 is supported on both sides of the pedal body 200 to correspond to each other. In some cases, the position where the fixing screw 170 is fastened and the number of the fixing screw 170 may be changed.

On the upper and lower surfaces of the pedal body 200, the inner binder 220 and the outer binder 230 are disposed along the axial direction, one for each. The inner and

outer binders

220 and 230 have

binding portions

222 and 232 facing each other. The binding

portions

222 and 232 are engaged with both side portions of the cleat 300 mounted on the cycling shoes worn by the user, respectively. Each of the

binders

220 and 230 has

leg portions

224 and 234 bent from both ends of the

binding portions

222 and 232, and the rotation pin holes 226 and 236 are formed through the

leg portions

224 and 234. have. The rotating pin holes 226 and 236 pass through the inner rotating pin 216 and the outer rotating pin 218, respectively, and are assembled to the pin mounting holes 212 and 214 provided in the pedal body 200. The inner pivot pin 216 passes through all of the pair of inner binders 220, and the outer pivot pin 218 also passes through all of the pair of outer binders 230. The inner pin mounting hole 212 and the outer pin mounting hole 214 are spaced apart at intervals along the axial direction.

Rotating support part for supporting the inner and

outer binders

220 and 230 is composed of a pair of pivot pins 216 and 218 to rotate the pair of inner binder 220 and the pair of outer binder 230, respectively. I support it. However, the rotation support part is composed of a single rotation pin to support all four pairs of

binders

220 and 230 in pairs, or the two

rotation pins

216 and 218 support a diagonal binder or a binder on the same surface. It can also be configured to support in common.

In addition, although a torsion coil spring is adopted as a spring providing elasticity by integrally forming a pair of inner binder 220 and / or a pair of outer binder 230, it is possible to apply various known springs. Of course. For example, compression springs, tension springs, leaf springs, etc. can be applied to replace the torsion coil spring of the present embodiment so as to provide an appropriate elastic binding force.

In this way, since the

binders

220 and 230 are rotatably supported by the rotation support part made of the rotation pins 216 and 218 arranged horizontally in the axial direction, the inner binder 220 and the outer binder 230 facing each other are mutually facing. Rotates around the pivot pins 216 and 218 to be mutually accessible and spaced apart along the axial direction of the pedal shaft 100.

The binding

portions

222 and 232 of the

binders

220 and 230 are spaced apart from the surface of the pedal body. As a result, when the operation of the

binding units

222 and 232 is disturbed by foreign matters, it is easy to remove the foreign matters.

Torsion coil springs 240 and 250 are coupled to the respective pivot pins 216 and 218.

Springs

240 and 250 have

coil portions

242 and 252 in the central region and

torsion arm portions

244 and 254 at both ends, and each

pivot pin

216 and 218 passes through

coil portions

242 and 252. Both

torsion arm portions

244 and 254 contact the inner surfaces of the upper and

lower binders

220, 220; 230, 230, respectively. As a result, the upper and

lower binders

220, 220; 230, 230 receive elastic resistance in the mutually approaching directions. The

binders

220 and 230 which face each other along the axial direction at the top or the bottom by these

springs

240 and 250 are subjected to elastic pushing force in the mutually approaching direction, and cleats between the

binders

220 and 230. When the 300 is inserted, it is resistant to the

springs

240 and 250 and can be elastically opened.

The adjusting screw 260 is provided under each of the

binders

220 and 230. The adjusting screw 260 is coupled to the slider 262, and when the adjusting screw 260 rotates, the slider 262 moves along the longitudinal direction of the adjusting screw 260. The

arm portions

252 and 254 of the torsion coil springs 240 and 250 are in contact with the slider 262 and between the

arm portions

244 and 254 and the

binders

220 and 230 as the slider 262 moves. The interval fluctuates. Accordingly, the manipulation of the adjusting screw 260 is converted to the movement of the slider 262, and the pressing force of the

springs

240 and 250 applied to the

binders

220 and 230 is changed. The change in the pressing force of the

springs

240 and 250 means a change in the resistance force when the cleats 300 are inserted into or separated from the binding

portions

222 and 232. The user can set a binding force suitable for him through the adjustment of the adjusting screw 260.

6 and 7 are cross-sectional views for explaining the detachment process of the cleat (300).

Cleat 300 has inner and outer

gripping portions

312 and 314 corresponding to binding

portions

222 and 232 of inner and

outer binders

220 and 230. The

engagement portions

312 and 314 have inclined surfaces in the insertion and release directions, respectively, to facilitate insertion into and release from the binding

portions

222 and 232. The cleat 300 may be inserted horizontally between the inner and

outer binders

220 and 230 as shown in FIG. 5 to be evenly engaged with both

binders

220 and 230, but in many cases, the cleats 300 may be inclined as shown in FIG. It is biased and inserted in either side. Even if the cleat 300 is inserted at an angle, the cleat 300 is properly positioned between the

binding portions

222 and 232 and pressed, and the combination of the

binders

220 and 230 and the

bites

312 and 314 is applied to one side. The

bites

312 and 314 are first pushed into contact with the one-

side binding parts

222 and 232, and the

binders

220 and 230 are opened while resisting the elastic force of the

springs

240 and 250. , 314 is caught, and then the remaining

bites

312 and 314 are sequentially engaged so that the cleat 300 is completely engaged. Figure 7 shows the coupling state. In this bonded state, the cleats 300 are relatively firmly held by the elastic restraining force of both

binders

220 and 230.

When the user wants to get off the bicycle, as shown in FIG. 6, when the cycling is turned outwards, the inner stitching portion 312 of the cleat 300 is separated from the inner binding portion 222, and then the outer stitching portion ( 314 is disengaged from the outer binding portion 230 so that cycling is free from the pedals.

As described above, in the bicycle pedal assembly according to the present invention, even if the user roughly places the cleat 300 between the inner and

outer binders

220 and 230, the binding

portions

222 and 232 and the

bite portion

312 , 314 can be engaged by itself, and also when the cleats 300 are detached, the cleats 300 can be easily released from the

binders

220 and 230 simply by flipping the feet outward without twisting the feet. Therefore, even beginners can adapt without difficulty.

In addition, since the length of the bearing housing 120 embedded in the pedal body 200 is embedded over a portion of the length of the pedal body 200, the length of the pedal shaft 100 is also made accordingly, thereby the pedal body 200 ) And the possibility of changes in the structure and design of the relevant parts can be significantly increased.

Claims

In a bicycle pedal assembly,

Pedal shaft,

A pedal body that rotates about the pedal shaft and has both side surfaces capable of supporting a cleat-mounted cycling;

A bearing housing in which the pedal body is embedded in the pedal body over a partial length section of the pedal body along the axial direction of the pedal body, and accommodates the pedal shaft;

A pair of bearings spaced apart from each other in the bearing housing along the axial direction and rotatably supporting the pedal shaft;

A pair of inner binders and a pair of outer binders respectively attached to both surfaces of the pedal body, the pair of inner binders having binding portions facing the mutually along the axial direction and engaging the cleats;

A rotation support part which supports the pair of inner binders and the pair of outer binders so as to be rotatable along the axial direction;

And an elastic member that elastically pushes each of the binders in a binding direction.
The method of claim 1,

The pedal body is made of a plastic material, the bearing housing is made of a metal material, the bearing housing is a bicycle pedal assembly, characterized in that embedded in the pedal body by insert injection.
The method of claim 1,

And the bearing housing includes a spacer portion for keeping the pair of bearings apart from each other.
The method of claim 1,

The pair of bearings are bicycle pedal assembly, characterized in that the ball bearing and the sliding bearing.
The method of claim 4, wherein

And the ball bearing supports a free end region of the pedal shaft, and the sliding bearing supports the pedal shaft at a position spaced apart from the free end.
The method of claim 5,

And a stop nut coupled to a free end region of the pedal shaft to contact the ball bearing along the axial direction to prevent separation of the pedal shaft.
The method of claim 1,

And a fixing screw penetrating the pedal body and inserted into the bearing housing laterally in the axial direction, wherein the bearing housing has a fixing female screw portion to which the fixing screw is fastened.
The method of claim 1,

And said binding portion of each binder is spaced outward from the surface of said pedal body.
The method of claim 1,

And the pivot support portion has an inner pivot pin for pivotally supporting the pair of inner binders and an outer pivot pin for pivotally supporting the pair of outer binders in common.
The method of claim 9,

Each of the binders is independently formed, the bicycle pedal assembly, characterized in that supported independently on the pivot pin.
The method of claim 10,

The elastic member is a torsion coil spring, and the bicycle pedal assembly, characterized in that it has a coil portion through which each pivot pin passes and an arm portion provided at both ends of the coil portion to push a pair of binders.
The method of claim 11,

Bicycle pedal assembly, characterized in that the tension adjusting portion is provided in each of the elastic members.
The method of claim 12,

And the tension adjusting part includes a slider in contact with at least one arm of the elastic member, and an adjusting screw for moving the slider.