JP3150954U - Crank quick disassembly device - Google Patents

Abstract

A crank quick disassembling apparatus capable of quickly disassembling a pedal and a crank. A crank quick disassembly device includes a crank and a quick disassembly device, of which one end of the crank is provided with a pedal, a disassembly hole is provided on a side surface of the crank, and a quick disassembly hole is formed on a side surface of the crank. The quick disassembly hole communicates with the pedal, and the quick disassembly device includes a quick disassembly rod 40, an elastic member 50, a fixing member 60, and a quick disassembly pull button 70, and the quick disassembly rod is provided in the rapid disassembly hole. One end of the quick disassembly rod is provided on the head 41, the outer diameter of the head is larger than that of the quick disassembly rod, the fixing member is fixed in the quick disassembly hole, and the elastic member is on the rapid disassembly rod. One end of the elastic member pushes up the head, the other end of the elastic member pushes up the fixing member, and the head is pushed into the pedal hole by elasticity, and the other end of the quick disassembly rod is Through a constant member, bind to rapid degradation Purubotan. [Selection] Figure 1

Description

  The present invention relates to a quick crank disassembly device, and more particularly to a bicycle crank quick disassembly structure that can provide a design for quick disassembly of a pedal and a crank.

  A conventional crank quick disassembly device includes a pedal, a fixing nut, and a pedal crank, as in the Chinese patent application No. 909020059 “Bicycle pedal crank quick disassembly device”, and one end of the pedal extends the rotation shaft. And the fixing nut is a sleeve body having a screw hole at the center, and the screw hole of the fixing nut is screwed to the pedal. The other end, which is different from the pedal of the fixed nut, can be screwed onto the outer part of the fixed nut. A sleeve hole that can be fitted with a fixing nut is provided, and inside the sleeve hole, a guide fitting groove that can fit the locking convex edge at a position corresponding to the locking convex edge of the fixing nut is provided. And the other side end face different from the fixed nut of the pedal crank corresponds to one side of the guide fitting groove, the depth from the end face is slightly larger than the thickness of the locking convex edge, and along the sleeve hole. The engaging grooves are distributed circularly and communicate with the guide fitting grooves.

Chinese Patent Application No. 090220059 Specification

  In the conventional structure, the fixing nut needs to process a screw hole, and unless the screw hole is processed carefully, the screw thread is licked or the center is deviated. Further, the conventional structure requires processing of the sleeve hole and mounting of the fixing nut, the strength of the pedal end for cranking is insufficient, and the problem of tearing or breaking is likely to occur. Furthermore, using a method that fits the convex edge and the guide fitting groove, after a long period of time, it is easy to loosen, and the problem arises that the pedal will be separated arbitrarily. It needs to be completed and cannot be directly attached / detached by hand, which greatly limits the convenience of operation.

  An object of the present invention is to provide a quick crank disassembling apparatus in which defects such as incomplete and easy loosening of the structure of the conventional crank disassembling apparatus and lack of convenience are improved.

To achieve the above object, the present invention includes a crank and a quick disassembly device, of which
One end of the crank is provided with a pedal, a disassembly hole is provided on the crank side surface, a quick disassembly hole is provided on the crank side surface, and the quick disassembly hole communicates with the pedal,
The quick disassembling apparatus includes a quick disassembling rod, an elastic member, a fixing member, and a quick disassembling pull button. The quick disassembling rod is provided in the quick disassembling hole, and one end of the quick disassembling rod is provided on the head. The outer diameter of the part is larger than the quick disassembly rod, the fixing member is fixed in the quick disassembly hole, the elastic member is installed on the quick disassembly rod, and one end of the elastic member pushes up the head, the elastic member The other end pushes up the fixing member and pushes the head into the pedal hole by elastic action, and the other end of the quick disassembling rod penetrates the fixing member and is connected to the quick disassembling pull button.
The present invention has the following features.
(1) Including crank and quick disassembly device, of which
One end of the crank is provided with a pedal, a disassembly hole is provided on the crank side surface, a quick disassembly hole is provided on the crank side surface, and the quick disassembly hole communicates with the pedal,
The quick disassembling apparatus includes a quick disassembling rod, an elastic member, a fixing member, and a quick disassembling pull button. The quick disassembling rod is provided in the quick disassembling hole, and one end of the quick disassembling rod is provided on the head. The outer diameter of the part is larger than the quick disassembly rod, the fixing member is fixed in the quick disassembly hole, the elastic member is installed on the quick disassembly rod, and one end of the elastic member pushes up the head, the elastic member A crank quick disassembly rod in which the other end pushes up the fixing member, pushes the head into the pedal hole by elastic action, and the other end of the quick disassembly rod penetrates the fixing member and is coupled to the quick disassembly pull button.
(2) The quick crank disassembly rod according to (1), wherein the fixing member is a star pad.
(3) The quick disassembly rod according to (1), wherein one end of the quick disassembly rod is provided with a screw thread portion, and the screw thread portion is coupled with a quick disassembly pull button.
(4) The crank quick disassembly rod according to (2), wherein one end of the quick disassembly rod is provided with a screw thread portion, and the screw thread portion is coupled with a quick disassembly pull button.
(5) The crank quick disassembly rod according to any one of (1) to (4), wherein the quick disassembly hole is perpendicular to the pedal hole.
(6) The crank quick disassembly rod according to any one of (1) to (4), wherein one end of the quick disassembly rod is provided with a groove.
(7) The crank quick disassembly rod according to any one of (1) to (4), wherein the head is provided with a guide surface.

The present invention has the following advantages:
1. Simple structure: The structure of the quick disassembly is simple and the number of parts is small.
2. Convenience of operation: Using the quick disassembly pull button, the pedal can be disassembled quickly, which is very convenient to use and can be operated with one hand.
3. Simple processing: The crank does not need to be threaded or complicated.
4). Good structural strength: The strength of the pedal hole is good because it is not damaged.
5. The connection is firm: there is no danger of using an elastic member, fitting and fixing, and separation.

It is a three-dimensional decomposition explanatory drawing of the crank quick decomposition device of the present invention. It is assembly explanatory drawing of the crank quick disassembly apparatus of this invention. FIG. 3 is a partial cross-sectional explanatory view taken along line 3-3 in FIG. 2 of the present invention. It is operation | movement explanatory drawing of the crank quick disassembly apparatus of this invention. It is operation | movement explanatory drawing of the crank quick disassembly apparatus of this invention. It is a fragmentary sectional view of the 2nd example of the crank quick disassembly device of the present invention.

The present invention relates to a quick crank disassembly apparatus, and as shown in FIGS. 1 to 3, an embodiment of the present invention includes a crank 10 and a pedal 20,
One end of the crank 10 is provided with a pedal hole 11, and a quick disassembly hole 12 is provided on a side surface of the crank 10, and the quick disassembly hole 12 communicates with the pedal hole 11 perpendicularly.

The pedal 20 includes a pedal mandrel 21 that is mounted in the pedal hole 11, the pedal mandrel 21 is provided with a fitting groove 21, and the fitting groove 22 is a pedal core. It is provided on the shaft 21 in an annular shape, corresponding to the quick disassembly hole 12, and one end of the pedal shaft 21 is hexagonal, and is used to transmit the force of the step to avoid idling.

  The crank quick disassembly device further includes a quick disassembly device 30, which is mounted in the quick disassembly hole 12, and the quick disassembly device 30 includes a quick disassembly rod 40, an elastic member 50, The quick disassembly rod 40 includes a fixing member 60, a quick disassembly pull button 70, and a screw 80. The quick disassembly rod 40 is mounted in the disassembly hole 12, and one end of the rapid disassembly rod 40 is a head 41. One end is a screw thread portion 42, and the diameter of the head 41 is larger than that of the quick disassembly rod, and the screw thread portion 42 is provided with a groove 43. In this embodiment, the fixing member 60 is a star pad. 60, and the star-shaped pad 60 is mounted in the quick disassembly hole 12, is closely fitted with the rapid disassembly hole 12 using the star-shaped pad 60, and is fitted and fixed therein, and the quick disassembly pull button 70 is A through hole 71 is provided.

At the time of assembly, the head 41 of the quick disassembly rod 40 is inserted into the quick disassembly hole 2, and the elastic member 50 is put on the rapid disassembly rod 40, and the star pad 60 is pushed into the rapid disassembly hole 12 to quickly The screw thread portion 42 of the disassembly rod 40 passes through the star pad 60 and is screwed with the quick disassembly pull button 70. The elastic member 50 is compressed using the star pad 60 and the head 41, and the head 41 of the quick disassembly rod 40 is pushed into the pedal hole 11.

  FIGS. 4 and 5 are exploded and assembled operation diagrams of the crank 10 and the pedal 20 according to the present invention. To disassemble the crank 10 and the pedal 20, all that is required is to pull the quick disassembly pull button. It is only necessary to move the head 41 to the quick disassembly hole 12 in a direction away from 11 and to pull out the pedal 20 from the pedal hole 11. At the time of assembly, the quick disassembly pull button 70 is pulled and the pedal 20 is inserted into the pedal hole 11, the quick disassembly pull button is loosened, the action of the elastic member 50 is applied, and the head 41 is pushed into the fitting groove 22. Thus, the coupling of the crank 10 is completed and the elastic member 50 is subjected to the elastic action so that the head 41 and the fitting groove 22 are fitted, and the phenomenon of loosening and dropping does not easily occur.

  The present invention has a simple structure, is convenient to operate, does not require the pedal 20 and the crank 10 to be fixed with a screw thread, reduces not only the machining process, but also the convenience of use. Can be improved. Further, the quick disassembly hole 12 opened on the side does not destroy the strength of the pedal hole 11. By utilizing the elasticity of the elastic member 50, it is possible to avoid the possibility of unexpected separation.

  As shown in FIG. 6, the second embodiment of the present invention is the same as the first embodiment, and will not be described again here, only the difference will be described. One end of the pedal mandrel 21 is provided with a first guide surface 23, the head 41 is provided with a second guide surface 411, a first guide surface 23 is provided, and the first guide surface 23 and the second guide surface 23 are provided. By combining 411, when the pedal shaft 21 is inserted, the head 41 is first guided and pushed open, and can be further fitted with the fitting groove 22 to complete the automatic fitting operation. There is no need to pull the quick disassembly pull button 70.

In the present invention, preferred embodiments have been disclosed as described above, but these are not intended to limit the present invention in any way, and anyone who is familiar with the technology has an equivalent scope that does not depart from the spirit and scope of the present invention. Of course, various fluctuations and hydration colors can be added.

10 Crank 11 Pedal hole 12 Quick disassembly hole 20 Pedal 21 Pedal axle 22 Fitting groove 23 First guide surface 30 Rapid disassembly device 40 Rapid disassembly rod 41 Head 411 Second guide surface 42 Threaded portion 43 Groove 50 Elastic member 60 Fastening member 70 Quick disassembly pull button 71 Through hole 80 Screw

Claims (7)

Including cranks and quick disassembly devices, of which
One end of the crank is provided with a pedal, a disassembly hole is provided on the crank side surface, a quick disassembly hole is provided on the crank side surface, and the quick disassembly hole communicates with the pedal,
The quick disassembling apparatus includes a quick disassembling rod, an elastic member, a fixing member, and a quick disassembling pull button. The quick disassembling rod is provided in the quick disassembling hole, and one end of the quick disassembling rod is provided on the head. The outer diameter of the part is larger than the quick disassembly rod, the fixing member is fixed in the quick disassembly hole, the elastic member is installed on the quick disassembly rod, and one end of the elastic member pushes up the head, the elastic member A crank quick disassembly rod in which the other end pushes up the fixing member, pushes the head into the pedal hole by elastic action, and the other end of the quick disassembly rod penetrates the fixing member and is coupled to the quick disassembly pull button.   The crank quick disassembly rod according to claim 1, wherein the fixing member is a star pad.   The crank quick disassembly rod according to claim 1, wherein one end of the quick disassembly rod is provided with a screw thread portion, and the screw thread portion is coupled with a quick disassembly pull button.   The crank quick disassembly rod according to claim 2, wherein one end of the quick disassembly rod is provided with a screw thread portion, and the screw thread portion is coupled with a quick disassembly pull button. The crank quick disassembly rod according to any one of claims 1 to 4, wherein the quick disassembly hole is perpendicular to the pedal hole. The crank quick disassembly rod according to any one of claims 1 to 4, wherein a groove is provided at one end of the quick disassembly rod. The crank quick disassembly rod according to any one of claims 1 to 4, wherein the head is provided with a guide surface.

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