JP3040226U - Fitting type five-way pipe section with adjustable axis - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a fitting type five-passage pipe section with an adjustable axial center. SOLUTION: The insertable five-passage tube part with adjustable axial center according to the present invention comprises a five-passage pipe 1, an inner pipe 2, screw rings 3, 4, steel shaft bowls 5, 6, a shaft center 7 and a steel ball bearing 8. It is used in combination with the gear part. Threads 21 and 22 are provided inside both ends of the inner pipe 2, and threads 32 and 42 of appropriate length are provided inside one end of the screw rings 3 and 4, and screws of appropriate length are provided outside the steel shaft bowls 5 and 6. Mountain 52,
62 is provided, whereby the shaft center 7 and the steel ball bearing 8 and the screw rings 3 and 4 are incorporated into the inner pipe 2 and after being inserted into the five-passage pipe 1, the steel shaft bowls 5 and 6 are made by the screw rings 3 and 4. Are fixed with screws and fixed to the five-pass pipe 1. The inner ends of the screw rings 3 and 4 each have a small gap with respect to the end surface of the inner pipe 2, and when the screw rings 3 and 4 are turned, they are assembled,
Further, it becomes possible to finely adjust the axis 7 to the left and right, and it is possible to keep the gear face included angle of the gear portion and the rear wheel within the allowable angle.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a fitting type five-passage tube part with an adjustable axial center.

[0002]

[Prior art]

 In the conventional product assembly structure of the five-passage pipe used for bicycles, threads are provided inside both ends of the five-passage pipe, but since the five-passage pipe is first soldered on the body, the shaft center, steel ball, etc. After transporting these parts to the vehicle manufacturing plant, they are installed in the five-way pipe of the body, and the mounting and adjustment work is performed on the gears to keep the included angles of the gears, the rear wheels, and the gears of the transmission gears within a certain angle. Makes chain exchange smooth. However, since the assembly of all five pipes is done on the body, it takes time and labor, and all the personnel of the assembly line need specialized adjustment technology. Many things happen.

In order to solve the above problems, a manufacturer researches and develops a structure as shown in A of FIG. 7 and B of FIG. 8 and mounts it by adding an inner pipe and one or two screw parts. The above problem was solved. In other words, members such as the shaft center and steel balls can be installed in the inner pipe in advance, transported to the body manufacturing plant, and directly mounted on the five-passage pipe.

[0004]

[Problems to be solved by the device]

 However, here we must first understand the industry customary law, that is, the combination of the five-way section and the gear section. If the adjustment between the two is not appropriate, it is necessary to replace the five-way pipe section. In addition, the axis of the five-passage pipe is the life of the five-passage pipe, which is subject to tolerances during manufacturing. All pipes are returned to the factory for repair, and if the axis cannot be corrected, it will be scrapped and remanufactured. Regarding FIGS. 7 and 8 described above, although the drawbacks that each member of the conventional product must be attached to the body as described above are improved, there are still many problems as described below. (1) It is not possible to perform adjustment work on the entire five-passage pipe, so normally, after incorporating it into the five-passage pipe, the test work was carried out by further combining it with the gear portion, and by any chance the included angle was within the tolerance range. If it exceeds, all the shaft centers will be returned to the factory for correction, and if it cannot be corrected, all the shaft centers will be discarded and remanufactured. This is a huge loss in the factory, and all production lines in the manufacturing plant stop due to waiting for materials, resulting in delayed delivery and waste of labor. (2) Since the gear parts of different manufacturers all have different designs, the tolerances are also different. Therefore, when the factory manufactures the shaft center, it is necessary to stock the gear parts of different manufacturers in advance. However, the cost increases.

An object of the present invention is to propose a fitting type five-passage pipe part having an adjustable axial center including a five-passage pipe, an inner pipe, a screw ring, a steel shaft bowl, a shaft center, a steel ball bearing and the like members. . Another object of the present invention is to propose a fitting type five-passage pipe section with adjustable axial center which is time-saving, labor-saving, convenient and cost-effective.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the insertable five-passage pipe part according to claim 1 of the present invention is a five-passage pipe, an inner pipe, a screw ring, a fitting pipe, a shaft center and a steel ball bearing. It is used in combination with the gear part. Of these, conical surfaces will be provided on the inner edges of both ends of the five-pass pipe. Threads are provided inside both ends of the inner pipe. Provide a ball rail inside one end of the fitting pipe and a thread of appropriate length outside the fitting pipe. A conical surface is provided on the outside of one end of the screw ring, and this is made to correspond to the conical surface of the five-passage pipe.A screw thread of an appropriate length is provided on the inside of the other end of the screw ring. Screw on the inner thread. Further, a steel ball bearing and a shaft center are incorporated into the inner pipe, and the shaft center presses the steel ball bearing into the ball rail. After inserting the steel ball bearing into the other end of the inner pipe, screw the thread of the other fitting pipe into the screw thread of the other end of the inner pipe. The shaft center presses the steel ball bearing into the ball rail. After fixing the thread of one thread ring to the thread of the fitting tube, insert the assembled part into the five-way tube. It is firmly assembled by screwing the thread of the other thread ring onto the thread of the mating tube and matching the outer conical surface of the thread ring with the conical surface of the five-way tube. A small gap is left between the inner end of the screw ring and one end of the inner pipe, and the inner end of the other screw ring and the other end of the inner pipe are in close contact.

[0007]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the present invention comprises a five-pass pipe 1, an inner pipe 2, screw rings 3, 4, steel shaft bowls 5, 6, a shaft center 7, and a steel ball bearing 8, and a gear portion 9 is provided. Set and use.

The five-passage pipe 1 is provided with conical surfaces 11 and 12 on both inner edges of both ends thereof. The inner tube 2 is provided with threads 21 and 22 on both insides of both ends thereof, and a stepped surface 211 is provided on an inner edge of one end thereof. The screw rings 3 and 4 are provided with conical surfaces 31 and 41 on one outer side thereof so as to correspond to the conical surfaces 11 and 12 of the five-passage pipe 1, and the screw threads of an appropriate length are provided on the other inner side of the screw rings 3 and 4. 32 and 42 are provided. The steel shaft bowls 5 and 6 are provided with ball rails 51 and 61 inside one end thereof, and the threads 52 and 62 of an appropriate length are provided outside the steel shaft bowls 5 and 6, and stepped on the thread 52. A protection portion 521 is provided at a position corresponding to the surface 211, and rings 53 and 63 are fitted in the steel shaft bowls 5 and 6. As shown in FIG. 2, a nut 71 is arranged on the shaft center 7.

After that, the steel ball bearing 8 is incorporated in the present invention and further set on the gear portion 9 to be in use. The assembly is as shown in FIGS. 2 and 3. First, the steel bowl 5 has its thread 52 screwed to the thread 21 inside one end of the inner tube 2, and further the steel ball bearing 8 and the shaft center 7 are provided. The steel ball bearing 8 is pressed into the ball rail 51 by the shaft center 7, and the steel ball bearing 8 is inserted into the other end of the inner pipe 2 and then another steel ball is inserted. When the screw thread 62 of the shaft bowl 6 is screwed to the screw thread 22 at the other end of the inner tube 2, the steel ball bearing 8 is pressed into the ball rail 61 by the shaft center 7. Then, after screwing the screw thread 32 of the screw ring 3 to the screw thread 52 of the steel shaft bowl 5, the screw thread 42 of the other screw ring 4 is screwed to the screw thread 62 of the steel shaft bowl 6, This completes the assembly of semi-finished products.

At the time of assembly, the screw ring 4 is first rotated and removed (or the screw ring 4 may not be attached at the time of assembly), and other members are inserted into the five-tube 1 and screwed. The outer conical surfaces 31 and 41 of the three and four are closely fitted to correspond to the conical surfaces 11 and 12 of the five-way pipe 1, but a small gap is left between the inner ends of the screw rings 3, 4 and the inner pipe 2, After the gear unit 9 is set on the shaft center 7, the shaft center is tightened with the nut 71. If the included angle between the gear portion 9 and the rear wheel transmission gear gear surface exceeds the allowable range, the small gap described above can be achieved by only turning the two screw rings 3 and 4 as shown in FIGS. 4, 5 and 6. The axis 7 as a whole can be finely adjusted to the left and right. That is, first, the screw ring 3 may be loosened, and then the screw ring 4 may be rotated to keep the included angle between the gear portion 9 and the rear wheel transmission gear gear surface within an allowable angle, and then the screw ring 3 may be tightened again. After making them on the same plane, the screw ring 3 may be tightened.

In the above-mentioned assembly process, the most important point is that, regardless of whether the gear unit 9 is manufactured by three, four, or different manufacturers, on the production line of the semi-finished product factory, the request for the order form is It is possible to set the five-passage pipe part of the present invention to the jig in advance, and adjust it together with the gear part 9 of the desired manufacturer according to the combination tolerance demand, and leave the other screw ring. 3 is rotated on the body assembly line, and all the shaft centers 7 are screwed onto the inner pipe 2 when assembled in the five-passage pipe 1. In this way, it is possible to save body assembly time, eliminate the inconvenience of fine adjustment, and reduce costs. Also, in the production process, precise adjustment is required only in jig manufacturing, but if fine adjustment becomes necessary during quality control, the adjustment is completed by turning the two screw rings 3 and 4. .

[0012]

[Effect of the invention]

 As explained above, the insertable five-passage tube part with adjustable shaft center of the present invention can be adjusted by incorporating the shaft center part on the semi-finished product line, and the tolerance with the gear part is within the required range. It has the feature of being able to do. This has the effects of saving time, labor, convenience, and cost reduction.

[Brief description of the drawings]

FIG. 1 is an exploded view of an embodiment of the present invention.

FIG. 2 is an assembled sectional view of an embodiment of the present invention combined with a gear unit.

FIG. 3 is an enlarged view of an assembly local portion of the embodiment of the present invention.

FIG. 4 is a view showing an operation for finely adjusting the steel shaft bowl of the embodiment of the present invention.

FIG. 5 is a diagram showing an operation for finely adjusting the steel bowl according to the embodiment of the present invention.

FIG. 6 is a view showing an operation for finely adjusting the steel shaft bowl of the embodiment of the present invention.

FIG. 7 is a three-dimensional exploded view of a conventional product.

FIG. 8 is a three-dimensional exploded view of a conventional product.

[Explanation of symbols]

 1 Five-passage pipe 11, 12 Conical surface 2 Inner pipe 21, 22 Thread ridge 211 Stepped surface 3, 4 Thread ring 31, 41 Conical surface 32, 42 Thread ridge 5, 6 Steel shaft bowl 51, 61 Ball rail 52, 62 Thread 521 Defensive part 53, 63 Crowned ring 7 Shaft center 71 Nut 8 Steel ball bearing 9 Gear part A Conventional five-passage pipe B Conventional five-passage pipe

Claims (1)

[Utility model registration claims] 1. A five-passage pipe, an inner pipe, a screw ring, a fitting pipe, a shaft center, and a steel ball bearing member, which are used in combination with a gear part, of which the inner edges of both ends of the five-passage pipe are respectively With a conical surface,
Threads are provided inside both ends of the inner pipe, a ball rail is provided inside one end of the fitting pipe, a screw thread of an appropriate length is provided outside the fitting pipe, and a conical surface is provided outside one end of the screw ring. , This is made to correspond to the conical surface of the five-passage pipe, a screw thread of appropriate length is provided inside the other end of the screw ring, and the screw threads of the two fitting pipes are screwed to the screw threads inside one end of the inner pipe. , Further incorporating a steel ball bearing and a shaft center into the inner pipe, the shaft center pressing the steel ball bearing into the ball rail, and inserting the steel ball bearing into the other end of the inner pipe, then another fitting The thread of the joint pipe is screwed to the thread of the other end of the inner pipe, the shaft center presses the steel ball bearing into the ball rail, and the thread of one screw ring is fixed to the thread of the mating pipe. After that, insert the assembled part into the five-passage pipe, The screw thread of another screw ring is screwed to the screw thread of the mating pipe, and the conical surface on the outside of the screw ring is made to correspond to the conical surface of the five-pass pipe. A fitting five-passage pipe section with an adjustable axial center, characterized in that a small gap is left at one end of the inner pipe, and the inner end of the other screw ring and the other end of the inner pipe are in close contact with each other.