JP2009052735A - Assembly structure and assembly method for internal combustion engine starter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ring gear positioning structure and an assembly method, in which an eco-run system is composed as a sub-assembly, the sub-assembly of the eco-run system can be assembled, and the workability in assembling is improved. <P>SOLUTION: The assembly structure for an internal combustion engine starter is constituted by assembling a crankshaft 2 for the internal combustion engine, a bearing 3 to be fitted into the outer circumference of the crankshaft 2, a ring gear 4 fixed to the outer circumference of the bearing 3, an outer race 6 connected to the ring gear 4 through a one-way clutch 5, and a flywheel 7 integrally fixed to the crankshaft 2 by a bolt 8 as a fastening member through the outer race 6. It is provided with the sub-assembly 10 constituted by integrally assembling the ring gear 4, the one-way clutch 5, and the outer race 6, which are assembled with each other, and a positioning means to position the ring gear 4 of the sub-assembly 10 to the outer circumference of the bearing 3 in the thrust direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an assembling structure and an assembling method for an internal combustion engine starting device.

In recent years, the engine is temporarily stopped when the vehicle is temporarily stopped even during the operation of the vehicle based on the control judgment of the vehicle operation control device equipped with the microcomputer in response to the improvement of the fuel consumption and the reduction of the exhaust gas of the automobile. (Idling stop) is being performed. Such driving of the vehicle with the engine temporarily stopped is called eco-run driving. The eco-run operation is performed in a vehicle that uses only the engine as a drive source, or in a hybrid vehicle that combines engine drive and motor drive.
Such eco-run driving is realized by an eco-run system mounted on the vehicle. The eco-run system monitors the vehicle speed, accelerator opening, brake state, etc. of the vehicle by a computer in the vehicle operation control device, and stops the engine when the vehicle is stopped. This is a system for starting the engine and starting the vehicle.

In order to perform eco-run operation, in the starter of the internal combustion engine, the pinion gear of the starter motor is always meshed with the ring gear, and the crankshaft from the starter motor side is interposed between the ring gear and the crankshaft. There is known a one-way clutch that allows only power transmission to the side and blocks power transmission in the reverse direction.
In this case, only when the pinion gear of the starter motor is driven, the one-way clutch is locked and the ring gear and the crankshaft rotate integrally. On the other hand, when the drive of the starter motor is stopped after the crankshaft rotates, the one-way clutch is released and the power transmission from the crankshaft to the ring gear is cut off. Furthermore, since the one-way clutch is provided as described above, a bearing is disposed between the gear portion and the crankshaft because of the necessity of rotatably supporting the gear portion side of the ring gear.
In such an internal combustion engine starting device, an eco-run system (ring gear, one-way clutch, outer race, etc.) needs to be assembled in the internal combustion engine starting device in order to perform the eco-run operation as described above.

As a method of assembling the conventional structure of the internal combustion engine starting device (FIG. 23), as shown in FIG. 24, (1) the bearing 3 is press-fitted into the crankshaft 2. (2) Install the ring gear 4. (3) Assemble the snap ring B. (4) Assemble the one-way clutch 5 and the outer race 6. (5) The flywheel 7 was assembled and fixed with bolts 8. In other words, since the outer race 6 can only be assembled after the snap ring B is assembled, a sub-assembly (a group of functional parts) based on the ring gear 4 and the outer race 6 is configured. Assembling the sub-assembly was not possible due to the structure.
Conventionally, some examples of techniques that facilitate assembly by sub-assembly assembly include the following.

  Patent Document 1 describes that an automatic transmission that spline-fits a multi-plate brake to a rear case is facilitated.

  Patent Document 2 describes that in an automatic transmission, a counter-driven gear can be sub-assembled to facilitate assembly on a main line.

  In addition to the sub-assembly assembly, techniques relating to the assembly of the internal combustion engine starting device include the following.

  Patent Document 3 describes that the operation of fitting a rotating member into a ring-shaped seal member in an internal combustion engine starting rotational force transmission mechanism can be easily performed without causing shaft eccentricity.

  In Patent Document 4, sufficient lubrication oil is supplied to the one-way clutch and the bearing without increasing the outer diameter of the always-meshing internal combustion engine starting rotational force transmission mechanism using the one-way clutch and with no problem in fuel consumption. Possible lubrication structures are described.

In Patent Document 5, in the internal combustion engine starting rotational force transmission mechanism that rotates the crankshaft by transmitting the rotational force at the time of starting from the ring gear to the crankshaft via the one-way clutch, the lip portion of the oil seal is at high speed. It is stated that it will not slide.
JP-A-8-170699 JP-A-8-82350 JP 2007-30126 A JP 2007-126999 A JP 2007-32498 A

  However, Patent Document 1 and Patent Document 2 described above are intended to facilitate assembly in an automatic transmission, and there is still a specific assembly structure for facilitating assembly of an internal combustion engine starter, particularly an eco-run system. And no assembly method has been proposed.

  Further, Patent Document 3 described above easily executes the fitting operation of the rotating member with respect to the ring-shaped seal member, and Patent Document 4 is a lubrication structure that supplies lubricating oil to the one-way clutch or the bearing. Lubricating oil can be supplied to the ball bearing. Patent Document 5 realizes prevention of deterioration of the oil seal by disposing an oil seal so as not to slide at high speed. No. 4 and Patent Document 5 have not yet proposed a specific assembling structure and assembling method for facilitating the assembly of the internal combustion engine starting device, particularly the eco-run system.

Further, in the assembly method of the conventional structure described above, positioning of the ring gear 4 in the thrust direction is required. If the step of assembling the snap ring B for the positioning (FIG. 24 (3)) is added, That is, there is a problem in that it is impossible to assemble a sub-assembly composed of a ring gear, a one-way clutch, and a single outer race.
Therefore, the present invention has been made in view of the above problems, and an eco-run system is configured as a sub-assembly, and a ring gear positioning structure and an assembling method that enable sub-assembly assembly of the eco-run system are proposed. The purpose is to improve workability during assembly.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, in claim 1, the crankshaft of the internal combustion engine, a bearing press-fitted into the outer periphery of the crankshaft, a ring gear fixed to the outer periphery of the bearing, and the ring gear are connected via a one-way clutch. An internal combustion engine starter assembly structure comprising: an outer race; and a flywheel that is integrally fixed to the crankshaft via the outer race by a fastening member, the ring gear; A sub-assembly configured by integrally assembling the one-way clutch and the outer race; and positioning means for positioning the ring gear of the sub-assembly in the thrust direction at the outer peripheral portion of the bearing. It is.

  According to a second aspect of the present invention, the positioning means is provided on the outer periphery of the bearing, and is provided on the other end in the axial direction of the ring gear of the outer race. And a restricting means for restricting the rearward movement of the ring gear, which is provided at an opposing position.

  In Claim 3, in the state where the axial end of the inner periphery of the ring gear is locked by the locking means, the gap X in the struss direction between the front end of the outer race and the ring gear, and the regulating means The relation between the other end in the axial direction of the ring gear and the gap Y in the struss direction is such that the gap X> the gap Y.

  According to a fourth aspect of the present invention, the locking means is a snap ring.

  6. The ring gear according to claim 5, wherein the positioning means includes an engagement groove provided in the ring gear or the bearing, an engagement means that engages with the engagement groove and positions and fixes the ring gear, and the ring gear. And a guide portion for guiding the engaging means in which an inner peripheral corner portion on the front end side or an outer peripheral corner portion on the bearing rear end side is formed in a tapered shape.

  According to a sixth aspect of the present invention, in the state where the front end of the engagement groove is in contact with the front end of the engagement means, the clearance X between the front end of the outer race and the ring gear and the engagement means The relationship between the rear end and the rear end of the engagement groove is the gap X> the gap Z.

  According to a seventh aspect of the present invention, the engaging means is a snap ring.

  9. The crankshaft of the internal combustion engine, a bearing press-fitted to the outer periphery of the crankshaft, a ring gear fixed to the outer periphery of the bearing, and an outer connected to the ring gear via a one-way clutch. A method of assembling an internal combustion engine starting device comprising a race and a flywheel integrally fixed to the crankshaft by a fastening member via the outer race, the ring gear, and the one-way A sub-assembly step in which a clutch and an outer race provided with a restricting means for restricting rearward movement of the ring gear are integrally assembled to form a sub-assembly; and an axial direction of the inner periphery of the ring gear One end is locked by a snap ring, and the other axial end of the ring gear is restricted by the restricting means. A positioning step in which the bearing is assembled to the press-fitted crankshaft and positioning in the thrust direction of the ring gear of the subassembly on the outer periphery of the bearing, and the crankshaft and the flywheel are interposed via the subassembly. And a fastening step of fastening with a fastening member.

  According to a ninth aspect of the present invention, the restricting means is a thrust metal.

  In Claim 10, the crankshaft of an internal combustion engine, the bearing press-fitted on the outer periphery of the crankshaft, the ring gear fixed to the outer periphery of the bearing, and the outer connected to the ring gear via a one-way clutch A method of assembling an internal combustion engine starting device comprising a race and a flywheel integrally fixed to the crankshaft by means of a fastening member via the outer race, the inner side of the ring gear front end side A sub-assembly is formed by integrally assembling a ring gear having a tapered guide portion at a peripheral corner and an engagement groove formed on the inner peripheral surface of the ring gear, the one-way clutch, and the outer race. A sub-assembly step, and the guide portion guides the snap ring while reducing the diameter thereof, and engages and fixes the sub-assembly in the engagement groove. A positioning step in which the bearing is assembled with the press-fitted crankshaft and positioning the ring gear of the sub assembly in the thrust direction on the outer periphery of the bearing, and the crankshaft and the flywheel are fastened through the sub assembly. A fastening step of fastening with a member.

  In Claim 11, the crankshaft of an internal combustion engine, the bearing inserted in the outer periphery of this crankshaft, the ring gear fixed to the outer periphery of this bearing, and the outer connected to the said ring gear via a one-way clutch An assembly structure of an internal combustion engine starter comprising a race and a flywheel integrally fixed to the crankshaft by a fastening member via the outer race, wherein the ring gear and the bearing And a sub assembly configured by integrally assembling the one-way clutch and the outer race, and positioning means for positioning the bearing of the sub assembly in the thrust direction at the outer peripheral portion of the crankshaft. It is to be prepared.

  In Claim 12, the said positioning means is opposed to the axial direction other end of the bearing of the said outer race, and the latching means which latches the axial direction one end of the inner periphery of the said bearing provided in the outer periphery of the said crankshaft And a fixing means provided at a position where the fastening member is plastically deformed by an axial force when the fastening member is fastened to position and fix the bearing.

  In claim 13, the crankshaft of the internal combustion engine, the flywheel integrated with the outer race, which is integrally fixed to the crankshaft by a fastening member, the bearing press-fitted into the outer race, and the bearing An internal combustion engine starter assembly structure in which a ring gear fixed to the outer periphery and a one-way clutch interposed between the ring gear and the outer race are integrally assembled, and the ring A gear, the bearing, the one-way clutch, and a flywheel integrated with the outer race are integrally assembled to form a sub assembly, and the sub assembly is assembled to a crankshaft. .

  15. The crankshaft of an internal combustion engine, an outer race fitted to the outer periphery of the crankshaft, a bearing press-fitted into the outer race, and fixed to the outer periphery of the bearing, the outer race and the one-way An internal combustion engine starter assembly structure comprising a ring gear connected via a clutch, and a flywheel integrally fixed to the crankshaft by a fastening member via the outer race. The ring gear, the bearing, the one-way clutch, and the outer race are integrally assembled to form a sub assembly, and the sub assembly is assembled to the crankshaft.

  In claim 15, the crankshaft of the internal combustion engine, an outer race integrated with the bearing, and fitted to the outer periphery of the crankshaft, fixed to the outer periphery of the bearing, via the outer race and the one-way clutch An assembly structure for an internal combustion engine starting device, comprising: a ring gear to be connected; and a flywheel integrally fixed to the crankshaft via the outer race by a fastening member, wherein the ring gear The one-way clutch and the outer race integrated with the bearing are integrally assembled to form a sub assembly, and the sub assembly is assembled to the crankshaft.

  In claim 16, a crankshaft of an internal combustion engine, a flywheel integrated with an outer race, integrally fixed to the crankshaft by a fastening member, a bearing integrated with a one-way clutch, and an outer periphery of the bearing An internal combustion engine starter assembly structure integrally assembled with a ring gear press-fitted into the ring gear, wherein the ring gear, the bearing integrated with the one-way clutch, and the outer race are integrated. A flywheel is integrally assembled to constitute a sub-assembly, and the sub-assembly is assembled to a crankshaft.

  In Claim 17, the crankshaft of an internal combustion engine, the bearing inserted in the outer periphery of this crankshaft, the ring gear fixed to the outer periphery of this bearing, and the outer connected to the said ring gear via a one-way clutch A method of assembling an internal combustion engine starter comprising a race and a flywheel integrally fixed to the crankshaft by means of a fastening member via the outer race, wherein the ring gear and the bearing And a sub-assembly step for forming a sub-assembly by integrally assembling the one-way clutch and an outer race provided with a fixing means for positioning and fixing the bearing, and the sub-assembly on the outer periphery of the crankshaft And one end in the axial direction of the inner periphery of the bearing is locked by a flange portion provided on the outer periphery of the crankshaft. A positioning step of positioning the sub-assembly bearing in the thrust direction on the outer periphery of the crankshaft by bringing the other axial end of the bearing into contact with the fixing means; and the crankshaft and the flywheel. A fastening step in which the fastening means is fastened by a fastening member via the sub-assembly, and the fastening means is plastically deformed by an axial force to be fastened.

  In claim 18, the crankshaft of the internal combustion engine, the flywheel integrated with the outer race, which is integrally fixed to the crankshaft by a fastening member, the bearing press-fitted into the outer race, and the bearing A method of assembling an internal combustion engine starting device, wherein a ring gear fixed to an outer periphery and a one-way clutch interposed between the ring gear and the outer race are integrally assembled, A sub-assembly step for forming a sub-assembly by integrally assembling a gear, the bearing, the one-way clutch, and a flywheel integrated with the outer race; A positioning step in which positioning is performed by fitting to the sub-assembly, and the crankshaft and the flywheel are It is intended to include a fastening step of fastening the fastening member through.

  In Claim 19, the crankshaft of an internal combustion engine, the outer race fitted to the outer periphery of the crankshaft, the bearing press-fitted into the outer race, and the outer race and the one-way fixed to the outer periphery of the bearing A method of assembling an internal combustion engine starting device comprising: a ring gear connected via a clutch; and a flywheel integrally fixed to the crankshaft by a fastening member via the outer race. A sub-assembly step in which the ring gear, the bearing, the one-way clutch, and the outer race are integrally assembled to form a sub-assembly, and the sub-assembly is fitted to the outer periphery of the crankshaft A positioning step for positioning, and the crankshaft and the flywheel are connected to the sub-assembly. It is intended to include a fastening step of fastening the fastening member through.

  In claim 20, the crankshaft of the internal combustion engine and the bearing are integrated, an outer race fitted to the outer periphery of the crankshaft, and fixed to the outer periphery of the bearing, via the outer race and the one-way clutch. A method of assembling an internal combustion engine starting device comprising: a ring gear to be connected; and a flywheel integrally fixed to the crankshaft by means of a fastening member via the outer race. And a sub-assembly step for forming a sub-assembly by integrally assembling the one-way clutch and an outer race integrated with the bearing, and fitting the sub-assembly to the outer periphery of the crankshaft. A positioning step for positioning, the crankshaft and the flywheel via the sub-assembly It is intended to include a fastening step of fastening the binding member.

  In Claim 21, a crankshaft of an internal combustion engine, a flywheel integrated with an outer race, integrally fixed to the crankshaft by a fastening member, a bearing integrated with a one-way clutch, and an outer periphery of the bearing An internal combustion engine starter assembly method in which a ring gear that is press-fitted into a ring is integrally assembled, the ring gear, a bearing integrated with the one-way clutch, and an outer race integrated with each other A sub-assembly comprising a flywheel and a sub-assembly, a positioning step for fitting the sub-assembly to an outer periphery of the crankshaft, and positioning the sub-assembly on the crankshaft; And a fastening step of fastening with a fastening member.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, the eco-run system can be assembled as a sub-assembly by providing the positioning means. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved.

  According to the second aspect of the present invention, the ring gear can be positioned in the thrust direction by the locking means and the regulating means, and the sub-assembly assembly of the eco-run system is enabled.

  In claim 3, contact between the outer race and the ring gear is prevented.

  According to the fourth aspect of the present invention, it is easily detachable and easy to perform disassembly and maintenance.

  According to the fifth aspect of the present invention, the ring gear can be positioned in the thrust direction with a single engaging means, and the sub-assembly assembly of the eco-run system is enabled.

  In claim 6, contact between the outer race and the ring gear is prevented.

  According to the seventh aspect of the present invention, it is easily detachable and easy to perform disassembly and maintenance.

  According to the eighth aspect of the present invention, the eco-run system can be assembled as a sub-assembly by interposing the ring gear by the locking means and the regulating means and positioning in the thrust direction. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved.

  According to the ninth aspect, no seizure occurs even when the ring gear comes into contact.

  According to the tenth aspect, the ring gear can be positioned in the thrust direction with a single engagement means, and the sub-assembly assembly of the eco-run system is enabled.

  According to the eleventh aspect, the eco-run system can be assembled as a sub-assembly by providing the positioning means. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Further, since the bearing is not press-fitted into the crankshaft, a press-fitting machine is not required, and the cost can be reduced.

  According to the twelfth aspect, the ring gear can be positioned in the thrust direction by the locking means and the fixing means, and the sub-assembly assembly of the eco-run system is enabled.

  In claim 13, the eco-run system can be assembled as a sub-assembly. Furthermore, local leakage of the inner oil seal is possible. Further, by using the flywheel integrated with the outer race, the parts to be sealed and the number of parts are reduced, and it is not necessary to fasten the flywheel and the outer race together.

  In claim 14, the eco-run system can be assembled as a sub-assembly. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected.

  In claim 15, the eco-run system can be assembled as a sub-assembly. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Moreover, it becomes possible to respond without changing the oil seal diameter. Moreover, the number of parts is reduced by integrating the bearing and the outer race.

  In claim 16, the eco-run system can be assembled as a sub-assembly. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Moreover, it becomes possible to respond without changing the oil seal diameter. Further, the number of parts is reduced by integrating the bearing and the one-way clutch and integrating the outer race and the flywheel.

  In claim 17, the eco-run system can be assembled as a sub-assembly. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Further, since the bearing is not press-fitted into the crankshaft, a press-fitting machine is not required, and the cost can be reduced.

  In claim 18, the eco-run system can be assembled as a sub-assembly. Furthermore, local leakage of the inner oil seal is possible. Further, by using the flywheel integrated with the outer race, the parts to be sealed and the number of parts are reduced, and it is not necessary to fasten the flywheel and the outer race together.

  In claim 19, the eco-run system can be assembled as a sub-assembly. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected.

  In claim 20, the eco-run system can be assembled as a sub-assembly. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Moreover, it becomes possible to respond without changing the oil seal diameter. Moreover, the number of parts is reduced by integrating the bearing and the outer race.

  In claim 21, the eco-run system can be assembled as a sub-assembly. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Moreover, it becomes possible to respond without changing the oil seal diameter. Further, the number of parts is reduced by integrating the bearing and the one-way clutch and integrating the outer race and the flywheel.

Next, embodiments of the invention will be described.
1 is a schematic cross-sectional view showing an assembly structure of an internal combustion engine starter according to a first embodiment, FIG. 2 is a schematic cross-sectional view showing an assembly method of the internal combustion engine starter according to the first embodiment, and FIG. 4 is a schematic cross-sectional view showing a gap X between the ring gear and a gap Y between the thrust metal and the ring gear, FIG. 4 is a schematic cross-sectional view showing the assembly structure of the internal combustion engine starting device according to the second embodiment, and FIG. FIG. 6 is a schematic cross-sectional view showing a positioning state of the ring gear according to the second embodiment, and FIG. 7 is a clearance X and a snap ring between the outer race and the ring gear. 8 is a schematic cross-sectional view showing a ring gear provided with a snap ring removal hole, FIG. 9 is a schematic cross-sectional view showing a snap ring removal process, and FIG. 10 is a tapered guide. Embodiment of a ring gear having a portion FIG. 11 is a schematic cross-sectional view showing a step of guiding the ring gear by a bearing having a tapered guide portion, FIG. 12 is a view taken along arrow E in FIG. 11, and FIG. 13 is an internal combustion engine according to the third embodiment. FIG. 14 is a schematic cross-sectional view showing an assembling method of the internal combustion engine starting device according to the third embodiment, and FIG. 15 is an assembling structure of the internal combustion engine starting device according to the fourth embodiment. FIG. 16 is a schematic cross-sectional view showing a method for assembling the internal combustion engine starting device according to the fourth embodiment. FIG. 17 is a schematic cross-sectional view showing the assembly structure of the internal combustion engine starting device according to the fifth embodiment. 18 is a schematic cross-sectional view showing an assembling method of the internal combustion engine starting device according to the fifth embodiment, FIG. 19 is a schematic cross-sectional view showing an assembling structure of the internal combustion engine starting device according to the sixth embodiment, and FIG. FIG. 21 is a schematic cross-sectional view showing an assembling method of the internal combustion engine starting device according to Cross-sectional schematic view showing the assembly structure of the internal combustion engine starting device according to Example 7, FIG. 22 is a schematic sectional view showing a method of assembling the internal combustion engine starting device according to the seventh embodiment.
Moreover, in the following description, the direction of the arrow F shown in FIG.
In addition, the same code | symbol is attached | subjected to the member which has the same use and function, and the description is abbreviate | omitted.

First, the configuration of an internal combustion engine starting device to be assembled with an eco-run system will be described with reference to FIG.
As shown in FIG. 1, a flywheel 7 is integrally attached to one end of a crankshaft 2 of an internal combustion engine via an outer race 6, and an automatic transmission (not shown) is connected to the flywheel 7 via a torque converter. Connected.
The outer race 6 is connected to the ring gear 4 through a one-way clutch 5. A bearing 3 is interposed between the outermost periphery of the crankshaft 2 and the inner periphery of the ring gear 4.

  The ring gear 4 is composed of an inner race portion 4a and a ring plate portion 4b mainly constituting the outer peripheral side.

  A center portion 6 a of the outer race 6 is fastened together with the flywheel 7 at one end of the crankshaft 2 by a bolt 8 as a fastening member, and is configured to be rotatable together with the crankshaft 2.

  The inner race part 4 a of the ring gear 4 is attached to the outer peripheral part of the crankshaft 2 in the middle in the front-rear direction via a bearing 3. For this reason, when the one-way clutch 5 is not engaged, the ring gear 4 can rotate independently of the rotation of the crankshaft 2. Further, a ring-shaped gear portion 4c in front view is formed on the peripheral edge portion of the ring plate portion 4b. The gear portion 4c is always meshed with a pinion gear that is integrally fixed to an output shaft of a starter motor (not shown), and the ring plate portion 4b of the ring gear 4 rotates by receiving a rotational force from the starter motor.

In the ring gear 4, a one-way clutch 5 is disposed between the center portion 6 a of the outer race 6 and the ring plate portion 4 b. The one-way clutch 5 is used when the starter motor rotates the ring plate portion 4b via the pinion gear when the internal combustion engine is started, that is, when torque is transmitted from the ring plate portion 4b side, the central portion 6a of the outer race 6 is provided. And the ring plate portion 4b are engaged. Thus, the starter motor can rotate the crankshaft 2.
When the internal combustion engine is started and the rotation of the crankshaft 2 and the center portion 6a of the outer race 6 by the output of the internal combustion engine becomes faster than the rotation of the ring plate portion 4b, the one-way clutch 5 is released and the power transmission is interrupted. As a result, even if the pinion gear and the gear portion 4c of the ring gear 4 are always in mesh, it is possible to prevent the starter motor from overrunning after the internal combustion engine is started.

The eco-run system mounted on the internal combustion engine starter described in the present invention means that constituted by the ring gear 4, the one-way clutch 5, the outer race 6, etc., as shown by the dotted line in FIG.
The configuration of the internal combustion engine starting device described above is merely an example, and is not particularly limited. As a basic configuration of an internal combustion engine starter to which the present invention can be applied, for example, a ring gear meshed with a pinion gear is connected to a bearing and a one-way clutch, and is connected to an outer race and a flywheel via the one-way clutch. Torque is transmitted to enable rotation of the crankshaft.

  Next, the operation of the internal combustion engine starting device having the above configuration will be described.

When a current is passed through the starter motor to start the internal combustion engine to rotate the output shaft and the pinion gear integrally coupled thereto, the ring gear 4 that is always meshed with the output shaft is driven to rotate. As a result, the one-way clutch 5 is locked and the ring gear 4 and the flywheel 7 rotate integrally, so that the crankshaft that is integrally coupled with the flywheel 7 by the rotational driving force of the starter motor. The internal combustion engine is cranked by rotating 2.
Thus, when the start of the internal combustion engine is completed and the crankshaft 2 is rotated, the energization to the starter motor is stopped, the rotation of the pinion gear is stopped, and the ring gear 4 is also stopped at the same time, so that the one-way clutch 5 is released. It becomes. As a result, the rotational driving force of the crankshaft 2 is not input to the ring gear 4, and therefore the power transmission path between the internal combustion engine and the starter motor is interrupted.

  Next, an assembly structure and an assembly method for assembling the eco-run system in the internal combustion engine starting device will be described with reference to FIGS. 1 and 2.

  In the case of assembling the eco-run system (dotted line portion in FIG. 1) in the internal combustion engine starting device, as an overall process, first, after the eco-run system is assembled in advance as the sub-assembly 10 in the sub-assembly process, the sub-assembly 10 Is positioned in the internal combustion engine starting device to position the ring gear 4, followed by a fastening process in which the flywheel 7 and the crankshaft 2 are fastened via the sub-assembly 10. Each step will be specifically described below.

First, in the sub-assembly process shown in FIG. 2A, the ring gear 4 and the outer race 6 are integrally assembled via the one-way clutch 5 to constitute the sub-assembly 10. In the state where the sub-assembly 10 is assembled in this way, a restricting means for restricting the rearward movement of the ring gear 4 to a position facing the rear end 4d which is the other axial end of the ring gear 4 of the outer race 6. A certain thrust metal 9 is provided.
The thrust metal 9 serves as a positioning means for the ring gear 4 together with a snap ring A described later.
The thrust metal 9 can also be made of a material excellent in wear resistance that does not cause seizure, such as PTFE (Teflon (registered trademark)) coating.

Next, in the positioning step shown in FIGS. 2B and 2C, first, the inner ring 3a of the bearing 3 is press-fitted into the outermost bearing fitting portion 2a of the crankshaft 2 as shown in FIG. 2B. To fit and fix. Then, a snap ring A that is a locking means for locking the front end, which is the axial end of the inner periphery of the ring gear 4, is assembled to the outer peripheral groove provided in the front portion of the outer peripheral portion of the outer ring 3 b of the bearing 3.
In the present embodiment, in the assembly of the snap ring A to the bearing 3, the example in which the snap ring A is assembled after the bearing 3 is press-fitted into the crankshaft 2 is shown. 3 may be an assembly method in which the snap ring A is assembled to 3 and then the bearing 3 is press-fitted into the crankshaft 2.
As described above, in this embodiment, one end in the axial direction of the inner periphery of the ring gear 4 is a front end, and the other end in the axial direction of the inner periphery of the ring gear 4 is a rear end.

  Subsequently, as shown in FIG. 2C, the rear projecting portion 2c of the crankshaft 2 is inserted into the insertion hole 6b provided in the central portion of the sub-assembly 10 (outer seal 6), and the center portion of the outer race 6 is inserted. The front portion of 6a is brought into contact with one end of the crankshaft 2. As a result, the ring gear 4 (inner race portion 4a) is interposed between the snap ring A and the thrust metal 9 which are front and rear positioning means, and the ring gear 4 is positioned in the thrust direction.

Further, in positioning the ring gear 4, as shown in FIG. 3, the front end 6c of the outer race 6 in the state where the front end of the inner periphery of the ring gear 4 is locked by the rear end of the snap ring A as the locking means. The ring gear 4 is positioned so that the gap X is greater than the gap Y between the front end of the thrust metal 9 and the rear end 4d of the ring gear 4. . For example, the positioning is performed so that the front end 6c of the outer race 6 and the ring gear 4 do not come into contact with each other even if the front end of the thrust metal 9 and the rear end 4d of the ring gear 4 come into contact with each other. This is because the front end 6c of the outer race 6 and the ring gear 4 can be prevented from being seized.
Further, by using the snap ring A as the locking means, it can be easily attached and detached, and the internal combustion engine starting device can be easily disassembled and maintained.

Next, in the fastening step shown in FIG. 2 (d), the rear projecting portion 2 c of the crankshaft 2 is inserted into an insertion hole (not shown) provided in the central portion 7 a of the flywheel 7, and the front end of the flywheel 7 is inserted. In a state in which the center portion 6a of the outer race 6 is sandwiched between the crankshaft 2 and the flywheel 7 with the bolt 8 serving as a fastening member. Fastened and fixed.
This completes the process of mounting the eco-run system in the internal combustion engine starting device.

  By such a process, the crankshaft 2 of the internal combustion engine, the bearing 3 press-fitted into the outer periphery of the crankshaft 2, the ring gear 4 fixed to the outer periphery of the bearing 3, and the one-way clutch 5 to the ring gear 4 An internal combustion engine starter comprising: an outer race 6 connected via a flange; and a flywheel 7 integrally fixed to the crankshaft 2 via a bolt 8 as a fastening member via the outer case 6 And a sub assembly 10 formed by integrally assembling the ring gear 4, the one-way clutch 5, and the outer race 6, and the sub-assembly 10 at the outer peripheral portion of the bearing 3. A structure for assembling the internal combustion engine starting device assembled to include a positioning means for positioning the ring gear 4 of the assembly 10 in the thrust direction. To allow assembly of the eco-run system as a sub-assembly. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved.

  Further, the positioning means is provided on the outer periphery of the bearing 3 and is a locking means for locking the front end of the inner periphery of the ring gear 4; and the rear end of the ring gear 4 of the outer race 6 And a thrust metal 9 which is a restricting means for restricting the rearward movement of the ring gear 4 provided at a position facing 4d. The thrust gear 9 can be used to position the ring gear 4 in the thrust direction, and the sub-assembly of the eco-run system can be assembled. That is, the eco-run system can be assembled as the sub assembly 10 by using the thrust metal 9 instead of the snap ring B having the conventional structure shown in FIG.

  Further, the crankshaft 2 of the internal combustion engine, the bearing 3 press-fitted into the outer periphery of the crankshaft 2, the ring gear 4 fixed to the outer periphery of the bearing 3, and the ring gear 4 are connected via the one-way clutch 5. Assembly method for an internal combustion engine starter comprising: an outer race 6 to be mounted; and a flywheel 7 that is integrally fixed to the crankshaft 2 via the outer race 6 with a bolt 8 that is a fastening member. The ring gear 4, the one-way clutch 5, and the outer race 6 provided with a thrust metal 9 as a restricting means for restricting the rearward movement of the ring gear 4 are assembled together. A sub-assembly process for forming the sub-assembly 10, a front end of the inner periphery of the ring gear 4 is locked by a snap ring A, and the ring gear 4 The end 4d is regulated by the thrust metal 9, the sub assembly 10 is assembled to the crankshaft 2 into which the bearing 3 is press-fitted, and the thrust direction of the ring gear 4 of the sub assembly 10 at the outer periphery of the bearing 3 And an assembly method for an internal combustion engine, which includes a positioning step of positioning the crankshaft 2 and the flywheel 7 with a bolt 8 that is a fastening member via the sub-assembly 10. Thus, the ring gear 4 is interposed by the snap ring A as the locking means and the thrust metal 9 as the restricting means, and positioning in the thrust direction makes it possible to assemble the eco-run system as the sub-assembly 10. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved.

  Next, another embodiment of the assembling structure and assembling method for assembling the eco-run system in the internal combustion engine starting device will be described with reference to FIGS. 4, 5, 6 and 7.

  When the eco-run system (dotted line portion in FIG. 4) is assembled in the internal combustion engine starting device, the overall process is as follows. First, after the eco-run system is assembled in advance as a sub-assembly 20 in the sub-assembly process, the sub-assembly 20 Is assembled in the internal combustion engine starting device to position and fix the ring gear 4, followed by a fastening step of fastening the flywheel 7 and the crankshaft 2 via the sub-assembly 20. Each step will be specifically described below.

First, in the sub-assembly process shown in FIG. 5A, the ring gear 4 and the outer race 6 are assembled via the one-way clutch 5 to form the sub-assembly 20. A guide portion 4e for guiding a snap ring C, which is an engagement means (described later) formed in a tapered shape, is provided at an inner peripheral corner portion on the front end side of the inner race portion 4a of the ring gear 4, and the guide portion 4e An engagement groove 4 f is provided on the inner peripheral surface between the inner periphery and the rear end of the ring gear 4.
The engagement groove 4f, the snap ring C as the engagement means, and the guide portion 4e serve as positioning means for the ring gear 4 in the thrust direction.

Next, in the positioning step shown in FIGS. 5B and 5C, first, the inner ring 3a of the bearing 3 is press-fitted into the outermost bearing fitting portion 2a of the crankshaft 2 as shown in FIG. 5B. To fit and fix. And the snap ring C which is an engaging means is assembled | attached to the outer periphery groove | channel 3c provided in the outer peripheral part of the outer ring | wheel 3b of the bearing 3. As shown in FIG. The snap ring C is engaged with the outer circumferential groove 3c, and has a predetermined elasticity and is fitted in a diameter-reducible state (see (1) dotted line portion in FIG. 6).
In the present embodiment, in the assembly of the snap ring C to the bearing 3, the example in which the snap ring C is assembled after the bearing 3 is press-fitted into the crankshaft 2 is not particularly limited. 3 may be an assembly method in which the snap ring C is first assembled to the bearing 3 and then the bearing 3 is press-fitted into the crankshaft 2.

  Subsequently, as shown in FIG. 5 (c), the rear projecting portion 2c of the crankshaft 2 is inserted into an insertion hole (not shown) provided in the central portion of the sub-assembly 20 (outer race 6), and the outer race. 6 is brought into contact with one end of the crankshaft 2. At this time, when the snap ring C is guided backward by the guide portion 4e as shown in FIG. 6 ((1) in FIG. 6), the snap ring C is gradually reduced in diameter and stored in the outer circumferential groove 3c. ((2) in FIG. 6). Then, as shown in (3) of FIG. 6, the upper part of the snap ring C engages with the engaging groove 4f. Thus, the ring gear 4 (inner race portion 4a) is interposed at a predetermined position with respect to the thrust direction of the outer peripheral portion of the bearing 3, and the ring gear 4 is positioned in the thrust direction.

Further, in positioning of the ring gear 4, as shown in FIG. 7, the front end of the outer race 6 is secured in a state where the front end of the engagement groove 4f of the ring gear 4 is locked by the front end of the snap ring C as the engagement means. The clearance X between the clearance 6c and the ring gear 4 and the clearance Z of the snap ring C, that is, the clearance Z between the rear end of the snap ring C and the rear end of the engagement groove 4f, is the clearance X> the clearance Z. The ring gear 4 is positioned so as to be in the relationship. By positioning under such conditions, it is possible to prevent seizure due to the contact between the front end 6c of the outer race 6 and the ring gear 4.
Further, by using the snap ring C as the engaging means, it can be easily attached and detached, and the internal combustion engine starting device can be easily disassembled and maintained.

Next, in the fastening step shown in FIG. 5 (d), the rear projecting portion 2 c of the crankshaft 2 is inserted into an insertion hole (not shown) provided in the central portion 7 a of the flywheel 7, and the front end of the flywheel 7 is inserted. In a state in which the center portion 6a of the outer race 6 is sandwiched between the crankshaft 2 and the flywheel 7 with the bolt 8 serving as a fastening member. Fastened and fixed.
This completes the process of mounting the eco-run system in the internal combustion engine starting device.

  Next, another embodiment of the tapered guide portion for guiding the snap ring C shown in the present embodiment will be described with reference to FIGS. 10, 11, and 12.

  The ring gear 40 shown in FIG. 10 has an engagement groove 4f with which the snap ring C is engaged, like the ring gear 4 shown in the present embodiment. Further, the lower end portion of the ring gear 40 protrudes forward to form a protruding portion 40a (dotted line portion in FIG. 10), and a tapered guide portion 40b for guiding the snap ring C is formed at the tip of the protruding portion 40a. Yes. The ring gear 40 can be used in place of the ring gear 4 shown in this embodiment.

Further, instead of providing the ring gear 4 with the tapered guide portion 4e of the snap ring C as shown in the present embodiment, as shown in FIG. 11, the outer peripheral corner portion on the rear end side of the bearing 3 is formed in a tapered shape. The guide ring 3d is provided to guide the snap ring C assembled to the inner peripheral groove 4g provided on the inner peripheral surface of the ring gear 4 and engage with the engagement groove 3e provided to the outer ring 3b of the bearing 3. In this way, the ring gear 4 can be positioned.
Further, as a method for releasing the ring gear 4 from the engagement groove 3e, as shown in FIG. 12, a plurality of locations (4 in this embodiment) on the outer peripheral edge of the bearing 3 in the rear view of the bearing 3 and the ring gear 4 are used. By providing the notch 3f at the location), the removal jig can be inserted into the notch 3f and the inner circumference of the snap ring C can be expanded to release the engagement with the engagement groove 3e. .

  By such a process, the crankshaft 2 of the internal combustion engine, the bearing 3 press-fitted into the outer periphery of the crankshaft 2, the ring gear 4 fixed to the outer periphery of the bearing 3, and the one-way clutch 5 to the ring gear 4 An internal combustion engine starter comprising: an outer race 6 connected via a flange; and a flywheel 7 integrally fixed to the crankshaft 2 via a bolt 8 as a fastening member via the outer case 6 An assembly structure of the ring gear 4, the one-way clutch 5, and the outer race 6. A structure for assembling the internal combustion engine starting device so as to include a positioning means for positioning the ring gear 4 of the assembly 20 in the thrust direction. To allow assembly of the eco-run system as a sub-assembly 20. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved.

  The positioning means engages with the engagement groove 4f provided in the ring gear 4 or the engagement groove 3e provided in the bearing 3, and the engagement groove 4f or the engagement groove 3e. Snap ring C, which is an engaging means for positioning and fixing the ring gear 4, and the snap ring C formed in a tapered shape at the inner peripheral corner of the ring gear 4 at the front end or at the outer peripheral corner of the bearing rear end are guided. By being constituted by the guide portion 4e or the guide portion 3d, the positioning of the ring gear 4 in the thrust direction can be performed with one engagement means, and the sub-assembly assembly of the eco-run system is enabled. That is, the eco-run system is assembled as a sub assembly 20 by providing a snap ring C in place of the snap rings A and B of the conventional structure shown in FIG. It becomes possible.

  Further, the crankshaft 2 of the internal combustion engine, the bearing 3 press-fitted into the outer periphery of the crankshaft 2, the ring gear 4 fixed to the outer periphery of the bearing 3, and the ring gear 4 are connected via the one-way clutch 5. A method of assembling an internal combustion engine starting device comprising: an outer race 6 to be operated; and a flywheel 7 integrally fixed to the crankshaft 2 via the outer race 6 by a fastening member, The ring gear 4 having a tapered guide portion 4e formed at the inner peripheral corner portion on the front end side of the ring gear 4 and having an engagement groove 4f on the inner peripheral surface of the ring gear 4, the one-way clutch 5, A sub-assembly process for forming the sub-assembly 20 by integrally assembling the outer race 6, and the engagement groove by guiding the snap ring C with a reduced diameter by the guide portion 4e. Positioning that engages and fixes to f, and attaches the sub assembly 20 to the crankshaft 2 into which the bearing 3 is press-fitted, and positions the ring gear 4 of the sub assembly 20 in the thrust direction on the outer periphery of the bearing 3. By applying a method for assembling the internal combustion engine starting device, including a step and a fastening step of fastening the crankshaft 2 and the flywheel 7 with a bolt 8 that is a fastening member through the sub-assembly 20, Positioning of the ring gear 4 in the thrust direction can be performed by the engaging means, and the sub-assembly assembly of the eco-run system is enabled. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved.

Next, a releasing method for removing the snap ring C used for positioning the ring gear 4 from the ring gear 4 will be described with reference to FIGS.
As shown in FIG. 8, there are a plurality of snap ring removal holes 4h that are inserted from the outer peripheral side of the ring gear 4 into the engagement grooves 4f provided on the inner peripheral side of the ring gear 4 (four in this embodiment). ) Provided.
Then, when it is necessary to remove the snap ring C from the ring gear 4 due to overhaul or the like, the snap ring removing holes 4h provided at a plurality of locations using the rod-shaped removal jig 11 as shown in FIG. (Fig. 9 (1)), the outer periphery of the snap ring C is pressed to reduce the diameter (Fig. 9 (2)), the ring gear 4 is slid rearward (Fig. 9 (3)), and the snap The engagement of the ring C with the engagement groove 4f is released.

  Next, another embodiment of the assembling structure and assembling method for assembling the eco-run system in the internal combustion engine starting device will be described with reference to FIGS.

  When the eco-run system (dotted line portion in FIG. 13) is assembled in the internal combustion engine starting device, the overall process is as follows. First, after the eco-run system is assembled as the sub assembly 50 in the sub assembly step, the sub assembly 50 is used. Is a positioning process for assembling and positioning the engine in the internal combustion engine starting device, and then a fastening process for fastening the flywheel 7 and the crankshaft 2 via the sub-assembly 50. Each step will be specifically described below.

First, in the sub-assembly process shown in FIG. 14A, the front end that is one axial end of the inner periphery of the ring gear 4 is locked in the outer peripheral groove provided in the front portion of the outer peripheral portion of the outer ring 3b of the bearing 3. A snap ring A which is a locking means is assembled. The bearing 3 is inserted into an insertion hole (not shown) of the ring gear 4, and the outer peripheral groove provided at the rear portion of the outer peripheral portion of the outer ring 3 b of the bearing 3 is the other axial end of the inner periphery of the ring gear 4. A snap ring B which is a locking means for locking the rear end is assembled and fixed, and the ring gear 4 is attached to the bearing 3. In this way, the ring gear 4 assembled integrally with the bearing 3 by the snap rings A and B and the outer race 6 are assembled together via the one-way clutch 5 to constitute the sub assembly 50. In the state where the sub assembly 50 is assembled in this manner, the rear portion of the bearing 3 is positioned at the position opposite to the rear end portion 3g which is the other end in the axial direction of the bearing 3 (inner ring 3a) of the outer race 6. A collar 15 is provided as a fixing means for positioning and fixing at a predetermined position in the front-rear direction of the outer periphery. The collar 15 serves as a positioning means for the sub-assembly 50 together with the flange 14 described later.
The collar 15 can be made of a deformable material such as resin, gun metal or aluminum.
In this embodiment, when the snap rings A and B are assembled to the bearing 3, the snap ring A is assembled to the bearing 3, the ring gear 4 is inserted into the bearing 3, and then the snap ring B is inserted into the bearing 3. However, it is not particularly limited. First, the bearing 3 without the snap rings A and B being inserted into the ring gear 4 is inserted, and then the snap ring A and the snap ring B are attached to the outer circumferences. An assembly method in which the bearing 3 is integrally assembled with the ring gear 4 by being attached to the groove may be used.
Further, by using the snap rings A and B as the locking means, it can be easily attached and detached, and the internal combustion engine starting device can be easily disassembled and maintained.
As described above, in this embodiment, one end in the axial direction of the inner periphery of the ring gear 4 is a front end, and the other end in the axial direction of the inner periphery of the ring gear 4 is a rear end.

  Next, in the positioning step shown in FIG. 14 (b), first, the inner ring 3a of the bearing 3 of the subassembly 50 integrated in the subassembly assembly into the outermost bearing fitting portion 2a of the crankshaft 2 is inserted from the rear. Then, the front end of the inner ring 3a is locked by a flange portion 14 which is locking means provided at the outer peripheral edge portion of the crankshaft 2 (the tip end portion of the crank rear flange 2d which is the outer peripheral protruding portion of the crankshaft 2).

  Then, as shown in FIG. 14 (b), the rear projection 2c of the crankshaft 2 is inserted through the insertion hole 6b (FIG. 14 (a)) provided in the center of the sub-assembly 50 (outer seal 6). The front end portion of the collar 15 provided inside the outer race 6 is brought into contact with the rear end of the bearing 3 (inner ring 3a). As a result, the bearing 3 (inner ring 3a) is interposed between the collar portion 14 and the collar 15 which are front and rear positioning means, and the sub assembly 50 (bearing 3) is positioned in the thrust direction.

Next, in the fastening step shown in FIG. 14C, the rear projecting portion 2c of the crankshaft 2 is inserted into an insertion hole (not shown) provided in the center portion 7a of the flywheel 7, and the front end of the flywheel 7 is inserted. In a state in which the center portion 6a of the outer race 6 is sandwiched between the crankshaft 2 and the flywheel 7 with the bolt 8 serving as a fastening member. Fastened and fixed. At this time, the collar 15 is crushed and fixed by the axial force of the bolt 8 that fastens the flywheel 7.
This completes the process of mounting the eco-run system in the internal combustion engine starting device.

  When positioning the sub-assembly 50, as shown in FIG. 14C, the front end of the inner periphery of the bearing 3 is locked by the rear end of the flange portion 14 as the locking means, and the bolt 8 is tightened to fix the collar. The ring gear 4 and the bearing 3 are positioned so as to provide a gap X between the front end 6c of the outer race 6 and the ring gear 4 in a state in which the subassembly 50 is fixed between the crankshaft 2 and the flywheel 7 by crushing 15. is doing. Positioning under such conditions is to prevent the front end 6c of the outer race 6 from coming into contact with the ring gear 4 and to prevent seizure due to contact between the front end 6c of the outer race 6 and the ring gear 4. it can.

  By such a process, the crankshaft 2 of the internal combustion engine, the bearing 3 inserted into the outer periphery of the crankshaft 2, the ring gear 4 fixed to the outer periphery of the bearing 3, and the one-way clutch 5 to the ring gear 4 An internal combustion engine starter comprising: an outer race 6 connected via a flange; and a flywheel 7 that is integrally fixed to the crankshaft 2 via a bolt 8 that is a fastening member via the outer race 6. A subassembly 50 configured by integrally assembling the ring gear 4, the bearing 3, the one-way clutch 5, and the outer race 6, and the crankshaft 2. Positioning means for positioning the bearing 3 of the sub-assembly 50 in the thrust direction at the outer peripheral portion of the internal combustion engine starter With assembly structure, to allow assembly of the eco-run system as a sub-assembly 50. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Further, since the bearing 3 is not press-fitted into the crankshaft 2, no press-fitting machine is required, and the cost can be reduced.

  Also, the positioning means is provided on the outer periphery of the crankshaft 2 and is a locking means for locking one axial end of the inner periphery of the bearing 3, and the shaft of the bearing 3 of the outer race 6. And a collar 15 which is a fixing means for positioning and fixing the bearing 3 by plastic deformation by an axial force at the time of fastening of the bolt 8 which is the fastening member, provided at a position facing the other end in the direction. Thus, the thrust portion 14 serving as the locking means and the collar 15 serving as the fixing means can be used to position the bearing 3 in the thrust direction, and the sub-assembly assembly of the eco-run system is enabled.

  Further, the crankshaft 2 of the internal combustion engine, the bearing 3 inserted into the outer periphery of the crankshaft 2, the ring gear 4 fixed to the outer periphery of the bearing 3, and the ring gear 4 are connected via the one-way clutch 5. Assembly method for an internal combustion engine starter comprising: an outer race 6 to be mounted; and a flywheel 7 that is integrally fixed to the crankshaft 2 via the outer race 6 with a bolt 8 that is a fastening member. The ring gear 4, the bearing 3, the one-way clutch 5, and the outer race 6 provided with a collar 15 that is a fixing means for positioning and fixing the bearing 3 are assembled integrally. A sub-assembly step for forming the assembly 50, and the sub-assembly 50 is fitted to the outer periphery of the crankshaft 2 so that the front end of the inner periphery of the bearing 3 is The bearing 3 is locked by a flange 14 provided on the outer periphery of the rank shaft 2, and the rear end of the bearing 3 is brought into contact with the collar 15, so that the bearing 3 of the sub assembly 50 is A positioning step for positioning in the thrust direction, the crankshaft 2 and the flywheel 7 are fastened by bolts 8 as fastening members via the sub-assies 50, and the collar 15 is plastically deformed by an axial force. The eco-run system can be assembled as the sub-assembly 50 by applying a method for assembling the internal combustion starting engine including a fastening process for fixing. Thereby, when assembling on the main line, it is possible to reduce the number of parts related to the eco-run system, and the assembling is facilitated and the working efficiency at the time of assembling can be improved. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Further, since the bearing 3 is not press-fitted into the crankshaft 2, no press-fitting machine is required, and the cost can be reduced.

  Next, another embodiment of the assembling structure and assembling method for assembling the eco-run system in the internal combustion engine starting device will be described with reference to FIGS. 15 and 16.

  When assembling the eco-run system (dotted line portion in FIG. 15) in the internal combustion engine starting device, the overall process is as follows. Is a positioning process for assembling and positioning the engine in the internal combustion engine starting device, and then a fastening process for fastening the sub-assembly 60 to the crankshaft 2. Each step will be specifically described below.

First, in the sub-assembly process shown in FIGS. 16A and 16B, the bearing 3 is press-fitted into the outer periphery of the inner projecting portion 16a of the flywheel 17 in which the outer race 16 is integrated (integrated molding). Then, a snap ring B which is a locking means for locking the rear end which is one axial end of the inner periphery of the ring gear 4 is assembled to the outer peripheral groove provided in the rear portion of the outer peripheral portion of the outer ring 3 b of the bearing 3. Subsequently, while the one-way clutch 5 is interposed between the outer race 16 and the ring gear 4, the inner periphery of the ring gear 4 is inserted into the outer periphery of the bearing 3, and the front of the outer periphery of the outer ring 3 b of the bearing 3 is inserted. A snap ring A, which is a locking means for locking the front end which is the other axial end of the inner periphery of the ring gear 4, is assembled and fixed to the outer peripheral groove provided in the section, and the ring gear 4 is attached to the bearing 3. In this way, the ring gear 4 integrally assembled with the bearing 3 by the snap rings A and B and the outer race 16 integrated with the flywheel 17 are integrally assembled via the one-way clutch 5 to constitute the sub assembly 60. To do.
As described above, in this embodiment, one end in the axial direction of the inner periphery of the ring gear 4 is the rear end, and the other end in the axial direction of the inner periphery of the ring gear 4 is the front end.

  Next, in the positioning step shown in FIG. 16C, the rear projecting portion 2c of the crankshaft 2 is inserted into the insertion hole 17b (FIG. 16B) provided in the central portion of the sub assembly 60 (flywheel 17). The sub assembly 60 is inserted into the outer periphery of the crankshaft 2 and positioned.

Next, in the fastening step shown in FIG. 16D, the sub assembly 60 (the center portion 17a of the flywheel 17) is integrally fastened and fixed to the crankshaft 2 by the bolts 8 as fastening members.
This completes the process of mounting the eco-run system in the internal combustion engine starting device.

  By such a process, the crankshaft 2 of the internal combustion engine, the flywheel 17 integrated with the outer race 16 that is integrally fixed to the crankshaft 2 by the bolt 8 that is a fastening member, and the outer race 16 A bearing 3 to be press-fitted, a ring gear 4 fixed to the outer periphery of the bearing 3, and a one-way clutch 5 interposed between the ring gear 4 and the outer race 16 are integrally assembled. An internal combustion engine starter assembly structure comprising: the ring gear 4, the bearing 3, the one-way clutch 5, and the flywheel 17 integrated with the outer race 16 are integrally assembled. By constructing the sub assembly 60 and constructing the internal combustion engine starting device in which the sub assembly 60 is assembled to the crankshaft 2, Allowing assembly of the stem as a sub-assembly 60. Furthermore, local leakage of the inner oil seal is possible. Further, by using the flywheel 17 in which the outer race 16 is integrated, the parts to be sealed and the number of parts are reduced, and it is not necessary to fasten the flywheel 17 and the outer race 16 together.

  Further, the crankshaft 2 of the internal combustion engine, the flywheel 17 integrated with the outer race 16 that is integrally fixed to the crankshaft 2 by the bolts 8 that are fastening members, and the bearing that is press-fitted into the outer race 16. 3, a ring gear 4 fixed to the outer periphery of the bearing 3 and a one-way clutch 5 interposed between the ring gear 4 and the outer race 16 are integrally assembled. A method of assembling the apparatus, wherein the ring gear 4, the bearing 3, the one-way clutch 5, and the flywheel 17 integrated with the outer race 16 are integrally assembled to form a sub assembly 60. A sub-assembly process, a positioning process for positioning the sub-assembly 60 by fitting the sub-assembly 60 to the outer periphery of the crankshaft 2; By applying a method for assembling the internal combustion starting engine including a fastening step of fastening the crankshaft 2 and the flywheel 17 with the bolt 8 that is a fastening member via the sub-assembly 60, the eco-run system is connected to the sub-assembly 60. Assemble as possible. Furthermore, local leakage of the inner oil seal is possible. Further, by using the flywheel 17 in which the outer race 16 is integrated, the parts to be sealed and the number of parts are reduced, and it is not necessary to fasten the flywheel 17 and the outer race 16 together.

  Next, another embodiment of the assembling structure and assembling method for assembling the eco-run system in the internal combustion engine starting device will be described with reference to FIGS.

  When the eco-run system (dotted line portion in FIG. 17) is assembled in the internal combustion engine starter, the overall process is as follows. First, after the eco-run system is assembled as the sub assembly 70 in the sub assembly step, the sub assembly 70 Is a positioning process for assembling and positioning the internal combustion engine starter in the internal combustion engine starting device, followed by a fastening process for fastening the sub assembly 70 to the crankshaft 2. Each step will be specifically described below.

First, in the sub-assembly process shown in FIGS. 18A and 18B, the bearing 3 is press-fitted into the outer periphery of the inner protrusion 6 d of the outer race 6. Then, a snap ring B which is a locking means for locking the rear end which is one axial end of the inner periphery of the ring gear 4 is assembled to the outer peripheral groove provided in the rear portion of the outer peripheral portion of the outer ring 3 b of the bearing 3. Subsequently, while the one-way clutch 5 is interposed between the outer race 6 and the ring gear 4, the inner periphery of the ring gear 4 is inserted into the outer periphery of the bearing 3, and the front of the outer periphery of the outer ring 3 b of the bearing 3 is inserted. A snap ring A, which is a locking means for locking the front end which is the other axial end of the inner periphery of the ring gear 4, is assembled and fixed to the outer peripheral groove provided in the section, and the ring gear 4 is attached to the bearing 3. In this way, the ring gear 4 and the outer race 6 which are integrally assembled with the bearing 3 by the snap rings A and B and the outer race 6 are integrally assembled via the one-way clutch 5 to constitute the sub assembly 70.
As described above, in this embodiment, one end in the axial direction of the inner periphery of the ring gear 4 is the rear end, and the other end in the axial direction of the inner periphery of the ring gear 4 is the front end.

  Next, in the positioning step, the rear projection 2c of the crankshaft 2 is inserted into the insertion hole 6b provided in the center of the subassembly 70 (outer race 6), and the subassembly 70 is fitted to the outer periphery of the crankshaft 2. To perform positioning.

Next, in the fastening step shown in FIG. 18C, the rear projecting portion 2c of the crankshaft 2 is inserted into an insertion hole (not shown) provided in the central portion 7a of the flywheel 7, and the front end of the flywheel 7 is inserted. The bolt is a fastening member in a state in which the center portion 6a of the outer race 6 is sandwiched between the crankshaft 2 and the flywheel 7 with the portion abutting against the rear end portion of the sub assembly 70 (outer race 6). 8 is fastened and fixed integrally. That is, the subassembly 70 and the central portion 7a of the flywheel 7 are integrally fastened and fixed to the crankshaft 2 by the bolts 8 that are fastening members.
This completes the process of mounting the eco-run system in the internal combustion engine starting device.

  By such a process, the crankshaft 2 of the internal combustion engine, the outer race 6 fitted to the outer periphery of the crankshaft 2, the bearing 3 press-fitted into the outer race 6, and the outer periphery of the bearing 3 are fixed. A ring gear 4 connected to the outer race 6 via a one-way clutch 5, a flywheel 7 fixed to the crankshaft 2 integrally with a bolt 8 as a fastening member via the outer race 6, The ring gear 4, the bearing 3, the one-way clutch 5, and the outer race 6 are integrally assembled to form a sub assembly 70. The sub-assembly 70 is assembled to the crankshaft 2 to provide an internal combustion engine starter assembly structure, thereby supporting the eco-run system. To enable the assembly as assembly 70. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected.

  Also, the crankshaft 2 of the internal combustion engine, the outer race 6 fitted to the outer periphery of the crankshaft 2, the bearing 3 press-fitted into the outer race 6, and the outer race fixed to the outer periphery of the bearing 3 6 and a ring gear 4 connected via a one-way clutch 5 and a flywheel 7 fixed to the crankshaft 2 via a bolt 8 as a fastening member via the outer race 6. A method of assembling the internal combustion engine starting device, wherein the ring gear 4, the bearing 3, the one-way clutch 5, and the outer race 6 are integrally assembled to constitute a sub assembly 70. An assembly step, a positioning step in which the sub assembly 70 is fitted to the outer periphery of the crankshaft 2 for positioning, and the crankshaft 2 and the flywheel 7 are fastened together with a bolt 8 that is a fastening member through the sub-assembly 70, and an eco-run system is assembled as a sub-assembly 70. Make it possible. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected.

  Next, another embodiment of the assembling structure and assembling method for assembling the eco-run system in the internal combustion engine starting device will be described with reference to FIGS. 19 and 20.

  When the eco-run system (dotted line portion in FIG. 19) is assembled in the internal combustion engine starting device, the overall process is as follows. First, the sub-assembly 80 is assembled in advance after the eco-run system is assembled as the sub-assembly 80 in the sub-assembly process. Is a positioning process for assembling and positioning the internal combustion engine in the internal combustion engine starting device, and subsequently a fastening process for fastening the sub-assembly 80 to the crankshaft 2. Each step will be specifically described below.

First, in the sub-assembly process shown in FIGS. 20A and 20B, a ball is attached to the outer race 6 in which the inner ring 6e of the bearing protruding forward is integrated (integrated molding) inside the outer race 6. The outer ring 30b is provided through the portion to form the bearing 30. Thus, the outer race 6 and the bearing 30 are integrated. Then, a snap ring B which is a locking means for locking the rear end which is one axial end of the inner periphery of the ring gear 4 is assembled to the outer peripheral groove provided in the rear portion of the outer peripheral portion of the outer ring 30 b of the bearing 30. Subsequently, while the one-way clutch 5 is interposed between the outer race 6 and the ring gear 4, the inner periphery of the ring gear 4 is inserted into the outer periphery of the bearing 30, and the front of the outer periphery of the outer ring 30 b of the bearing 30 is inserted. A snap ring A, which is a locking means for locking the front end which is the other axial end of the inner periphery of the ring gear 4, is assembled and fixed to the outer peripheral groove provided in the section, and the ring gear 4 is attached to the bearing 30. In this way, the ring gear 4 and the outer race 6 which are integrally assembled with the bearing 30 by the snap rings A and B and the outer race 6 are integrally assembled via the one-way clutch 5 to constitute the sub assembly 80.
As described above, in this embodiment, one end in the axial direction of the inner periphery of the ring gear 4 is the rear end, and the other end in the axial direction of the inner periphery of the ring gear 4 is the front end.

  Next, in the positioning step, the rear projection 2c of the crankshaft 2 is inserted into the insertion hole 6b (FIG. 20B) provided in the center of the sub assembly 80 (outer race 6), and the sub assembly 80 is cranked. Positioning is performed by fitting the outer periphery of the shaft 2.

Next, in the fastening step shown in FIG. 20C, the rear projecting portion 2c of the crankshaft 2 is inserted into an insertion hole (not shown) provided in the center portion 7a of the flywheel 7, and the front end of the flywheel 7 is inserted. The bolt is a fastening member in a state in which the center portion 6a of the outer race 6 is sandwiched between the crankshaft 2 and the flywheel 7 with the portion abutting against the rear end portion of the sub-assembly 80 (outer race 6). 8 is fastened and fixed integrally. That is, the sub-assembly 80 and the central portion 7a of the flywheel 7 are integrally fastened and fixed to the crankshaft 2 by the bolts 8 that are fastening members.
This completes the process of mounting the eco-run system in the internal combustion engine starting device.

  By such a process, the crankshaft 2 of the internal combustion engine and the bearing 30 are integrated, and the outer race 6 fitted to the outer periphery of the crankshaft 2 is fixed to the outer periphery of the bearing 30. And a ring gear 4 connected via a one-way clutch 5 and a flywheel 7 fixed to the crankshaft 2 via a bolt 8 as a fastening member via the outer race 6. An assembly structure of an internal combustion engine starting device, wherein the ring gear 4, the one-way clutch 5, and the outer race 6 integrated with the bearing 30 are integrally assembled to constitute a sub assembly 80. By constructing the internal combustion engine starter assembly structure in which the sub assembly 80 is assembled to the crankshaft 2, the eco-run system can be sub-assembled. To enable the assembly as over 80. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Moreover, it becomes possible to respond without changing the oil seal diameter. Further, the integration of the bearing 3 and the outer race 6 reduces the number of parts.

  Further, the outer race 6 is integrated with the crankshaft 2 of the internal combustion engine and the bearing 3 and is fitted to the outer periphery of the crankshaft 2. The outer race 6 and the one-way clutch 5 are fixed to the outer periphery of the bearing 30. An internal combustion engine starter comprising: a ring gear 4 connected via a flange; and a flywheel 7 integrally fixed to the crankshaft 2 via a bolt 8 as a fastening member via the outer race 6. In which the ring gear 4, the one-way clutch 5, and the outer race 6 integrated with the bearing 30 are integrally assembled to form a sub-assembly 80. A positioning step for positioning the subassembly 80 by fitting it to the outer periphery of the crankshaft 2, and the crankshaft 2 and the front By applying a method for assembling the internal combustion starting engine that includes a fastening step of fastening the flywheel 7 to the bolt 8 that is a fastening member via the sub-assembly 80, the eco-run system can be assembled as the sub-assembly 80. To do. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Moreover, it becomes possible to respond without changing the oil seal diameter. Further, the integration of the bearing 3 and the outer race 6 reduces the number of parts.

  Next, another embodiment of the assembling structure and assembling method for assembling the eco-run system in the internal combustion engine starting device will be described with reference to FIGS.

  When assembling the eco-run system (dotted line portion in FIG. 21) in the internal combustion engine starting device, as an overall process, first, the eco-run system is assembled as the sub-assembly 90 in advance in the sub-assembly process, and then the sub-assembly 90 Is a positioning process for assembling and positioning the internal combustion engine starter in the internal combustion engine starting device, followed by a fastening process for fastening the sub-assembly 90 to the crankshaft 2. Each step will be specifically described below.

First, in the sub-assembly process shown in FIGS. 22A and 22B, the ring gear 4 is press-fitted into the outer periphery of the bearing 35 formed by integrating the one-way clutch. The rear end, which is one end in the axial direction of the bearing 35 and the ring gear 4, is brought into contact with the inner surface of the outer race 26 on the outer periphery of the inner projecting portion 26 a of the flywheel 27 integrated (integrated) with the outer race 26. And fit. The inner peripheral surface of the bearing 35 and the outer peripheral surface of the inner protruding portion 26a are snap rings that lock the front end, which is one axial end of the inner ring 35a of the bearing 35, in an outer peripheral groove provided in the outer peripheral front portion of the inner protruding portion 26a. By assembling D, the bearing 35 main body is fixed and integrated so as not to rotate. In this way, the bearing 35 into which the ring gear 4 is press-fitted by the snap ring D and the flywheel 27 in which the outer race 26 is integrated are integrally assembled to constitute the sub assembly 90.
As described above, in this embodiment, one axial end of the bearing 35 and the ring gear 4 is a front end, and the other axial end of the bearing 35 and the ring gear 4 is a rear end.

  Next, in the positioning step, the rear projecting portion 2c of the crankshaft 2 is inserted into the insertion hole 27b (FIG. 22B) provided in the center of the sub assembly 90 (flywheel 27), and the sub assembly 90 is cranked. Positioning is performed by fitting the outer periphery of the shaft 2.

Next, in the fastening step shown in FIG. 22C, the sub assembly 90 (the central portion 27a of the flywheel 27) is integrally fastened and fixed to the crankshaft 2 by the bolts 8 as fastening members.
This completes the process of mounting the eco-run system in the internal combustion engine starting device.

  By such a process, the crankshaft 2 of the internal combustion engine, the flywheel 27 integrated with the outer race 26, which is integrally fixed to the crankshaft 2 by the bolt 8 which is a fastening member, and the one-way clutch are integrated. An internal combustion engine starter assembly structure in which the bearing 35 and the ring gear 4 press-fitted into the outer periphery of the bearing 35 are integrally assembled, and is integrated with the ring gear 4 and the one-way clutch. An internal combustion engine starter comprising a sub-assy 90 that is integrally assembled with a bearing 35 and a flywheel 27 that is integrated with the outer race 26, and the sub-assy 90 is assembled to the crankshaft 2. With this assembly structure, the eco-run system can be assembled as a sub-assembly 90. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Moreover, it becomes possible to respond without changing the oil seal diameter. Further, the number of components is reduced by integrating the bearing 35 and the one-way clutch and integrating the outer race 26 and the flywheel 27.

  Also, the crankshaft 2 of the internal combustion engine, a flywheel 27 integrated with the outer race 26, and a bearing 35 integrated with the one-way clutch, which are integrally fixed to the crankshaft 2 by bolts 8 as fastening members. A method of assembling the internal combustion engine starting device by integrally assembling the ring gear 4 press-fitted into the outer periphery of the bearing 35, wherein the bearing 35 is integrated with the ring gear 4 and the one-way clutch. And a sub-assembly step of constructing a sub assembly 90 by integrally assembling the flywheel 27 integrated with the outer race 26, and fitting the sub assembly 90 to the outer periphery of the crankshaft 2. A positioning step for positioning, and the subassembly 90 is fitted to the crankshaft 2 and tightened by a bolt 8 as a fastening member. Assembling method for an internal combustion start engine comprising a fastening step for Applying to allow assembly of the eco-run system as a sub-assembly 90. Furthermore, local leakage of the inner oil seal is possible. Further, the outer and inner oil seal lip turning can be detected. Moreover, it becomes possible to respond without changing the oil seal diameter. Further, the number of components is reduced by integrating the bearing 35 and the one-way clutch and integrating the outer race 26 and the flywheel 27.

1 is a schematic cross-sectional view showing an assembly structure of an internal combustion engine starting device according to Embodiment 1. FIG. FIG. 3 is a schematic cross-sectional view illustrating an assembling method of the internal combustion engine starting device according to the first embodiment. The cross-sectional schematic diagram which shows the clearance gap X between an outer race and a ring gear, and the clearance gap Y between a thrust metal and a ring gear. FIG. 6 is a schematic cross-sectional view showing an assembly structure of an internal combustion engine starting device according to a second embodiment. FIG. 6 is a schematic cross-sectional view illustrating an assembling method for an internal combustion engine starting device according to a second embodiment. FIG. 6 is a schematic cross-sectional view showing a positioning state of a ring gear according to a second embodiment. The cross-sectional schematic diagram which shows the clearance gap X of an outer race and a ring gear, and the clearance gap Z of the snap ring C. FIG. The cross-sectional schematic diagram which shows the ring gear which provided the hole for snap ring removal. The cross-sectional schematic diagram which shows the removal process of a snap ring. The cross-sectional schematic diagram which shows another Example of the ring gear which has a taper-shaped guide part. The cross-sectional schematic diagram which shows the process of guiding a ring gear with the bearing which has a taper-shaped guide part. The E arrow line view of FIG. FIG. 6 is a schematic cross-sectional view showing an assembly structure of an internal combustion engine starting device according to a third embodiment. FIG. 6 is a schematic cross-sectional view showing an assembling method of an internal combustion engine starting device according to Embodiment 3. FIG. 6 is a schematic cross-sectional view showing an assembly structure of an internal combustion engine starting device according to a fourth embodiment. FIG. 6 is a schematic cross-sectional view showing an assembling method of an internal combustion engine starting device according to a fourth embodiment. FIG. 9 is a schematic cross-sectional view showing an assembly structure of an internal combustion engine starter according to a fifth embodiment. FIG. 9 is a schematic cross-sectional view illustrating an assembling method of an internal combustion engine starting device according to a fifth embodiment. FIG. 10 is a schematic cross-sectional view showing an assembly structure of an internal combustion engine starting device according to a sixth embodiment. FIG. 10 is a schematic cross-sectional view illustrating an assembling method of an internal combustion engine starting device according to a sixth embodiment. FIG. 10 is a schematic cross-sectional view showing an assembly structure of an internal combustion engine starting device according to a seventh embodiment. FIG. 10 is a schematic cross-sectional view illustrating an assembling method of an internal combustion engine starting device according to a seventh embodiment. The cross-sectional schematic diagram which shows the assembly | attachment structure of the conventional internal combustion engine starting device. The cross-sectional schematic diagram which shows the assembly | attachment method of the conventional internal combustion engine starting device.

Explanation of symbols

2 Crankshaft 3.30.35 Bearing 4.40 Ring gear 4d Rear end 3d.4e.40b Guide portion 3e.4f Engaging groove 5. One-way clutch 6.16.26 Outer race 6c Front end 7.17.27 Flywheel 8. Bolt 9 Thrust metal 10, 20, 50, 60, 70, 80, 90 Sub-assembly 14 Collar 15 Color A, B, C, D Snap ring X, Y, Z Gap

Claims (21)

An internal combustion engine crankshaft;
A bearing press-fitted to the outer periphery of the crankshaft;
A ring gear fixed to the outer periphery of the bearing;
An outer race connected to the ring gear via a one-way clutch;
An assembly structure of an internal combustion engine starting device comprising a flywheel integrally fixed to the crankshaft by a fastening member via the outer race,
The ring gear;
The one-way clutch;
A sub-assembly configured by integrally assembling the outer race;
And a positioning means for positioning the ring gear of the sub-assembly in the thrust direction at the outer periphery of the bearing. The positioning means comprises:
Locking means for locking an axial end of the inner periphery of the ring gear provided on the outer periphery of the bearing;
2. The control device according to claim 1, further comprising: a restricting unit configured to restrict the rearward movement of the ring gear provided at a position facing the other axial end of the ring gear of the outer race. Assembly structure of the internal combustion engine starting device.   In a state in which one end in the axial direction of the inner periphery of the ring gear is locked by the locking means, the clearance X between the front end of the outer race and the ring gear and the axial direction of the regulating means and the ring gear The internal combustion engine starter assembly structure according to claim 2, wherein the relationship between the other end and the gap Y in the struss direction is gap X> gap Y.   The assembly structure of the internal combustion engine starting device according to claim 2 or 3, wherein the locking means is a snap ring. The positioning means comprises:
An engagement groove provided in the ring gear or the bearing;
Engaging means for engaging with the engaging groove to position and fix the ring gear;
2. A guide portion for guiding the engaging means in which an inner peripheral corner portion on the ring gear front end side or an outer peripheral corner portion on the bearing rear end side is formed in a taper shape. An assembly structure of the internal combustion engine starting device according to claim.   In a state where the front end of the engagement groove is in contact with the front end of the engagement means, a clearance X between the front end of the outer race and the ring gear in the struss direction, the rear end of the engagement means, and the engagement 6. The internal combustion engine starter assembly structure according to claim 5, wherein the relationship between the rear end of the groove and the gap Z is such that the gap X> the gap Z.   The assembly structure for an internal combustion engine starting device according to claim 5 or 6, wherein the engaging means is a snap ring. An internal combustion engine crankshaft;
A bearing press-fitted to the outer periphery of the crankshaft;
A ring gear fixed to the outer periphery of the bearing;
An outer race connected to the ring gear via a one-way clutch;
A method of assembling an internal combustion engine starting device comprising: a flywheel that is integrally fixed to the crankshaft by a fastening member via the outer race;
The ring gear;
The one-way clutch;
A sub-assembly step for forming a sub-assembly by integrally assembling an outer race provided with a restricting means for restricting rearward movement of the ring gear;
One end in the axial direction of the inner periphery of the ring gear is locked by a snap ring, and the other end in the axial direction of the ring gear is regulated by the regulating means, and the sub assembly is assembled to the crankshaft into which the bearing is press-fitted. In addition, a positioning step of positioning in the thrust direction of the ring gear of the sub-assembly at the outer periphery of the bearing;
A method of assembling the internal combustion engine starting device, comprising: a fastening step of fastening the crankshaft and the flywheel with a fastening member through the sub-assembly.   9. The method of assembling the internal combustion engine starting device according to claim 8, wherein the restricting means is a thrust metal. An internal combustion engine crankshaft;
A bearing press-fitted to the outer periphery of the crankshaft;
A ring gear fixed to the outer periphery of the bearing;
An outer race connected to the ring gear via a one-way clutch;
A method of assembling an internal combustion engine starting device comprising: a flywheel that is integrally fixed to the crankshaft by a fastening member via the outer race;
A ring gear in which a tapered guide portion is formed at an inner peripheral corner on the ring gear front end side, and an engagement groove is provided on an inner peripheral surface of the ring gear;
The one-way clutch;
A sub-assembly process for forming a sub-assembly by integrally assembling the outer race;
The guide ring is guided by reducing the diameter of the snap ring and engaged and fixed in the engagement groove, and the sub assembly is assembled to the crankshaft into which the bearing is press-fitted, and the sub assembly is arranged at the outer peripheral portion of the bearing. A positioning step for positioning the ring gear in the thrust direction;
A method of assembling the internal combustion engine starting device, comprising: a fastening step of fastening the crankshaft and the flywheel with a fastening member through a sub-assembly. An internal combustion engine crankshaft;
A bearing inserted into the outer periphery of the crankshaft;
A ring gear fixed to the outer periphery of the bearing;
An outer race connected to the ring gear via a one-way clutch;
An assembly structure of an internal combustion engine starting device comprising a flywheel integrally fixed to the crankshaft by a fastening member via the outer race,
The ring gear;
The bearing;
The one-way clutch;
A sub-assembly configured by integrally assembling the outer race;
An assembly structure for an internal combustion engine starting device, comprising: positioning means for positioning the bearing of the sub assembly in a thrust direction on an outer peripheral portion of the crankshaft. The positioning means comprises:
Locking means provided on the outer periphery of the crankshaft for locking one axial end of the inner periphery of the bearing;
A fixing means provided at a position facing the other axial end of the bearing of the outer race, and fixing means for positioning and fixing the bearing by plastic deformation by an axial force when the fastening member is fastened. The assembly structure of the internal combustion engine starter according to claim 11. An internal combustion engine crankshaft;
A flywheel integrated with an outer race, which is integrally fixed to the crankshaft by a fastening member;
A bearing press-fitted into the outer race;
A ring gear fixed to the outer periphery of the bearing;
An assembly structure of an internal combustion engine starting device, in which a one-way clutch interposed between the ring gear and the outer race is integrally assembled,
The ring gear;
The bearing;
The one-way clutch;
An assembly structure of an internal combustion engine starting device, wherein a sub-assembly is configured by integrally assembling a flywheel integrated with the outer race, and the sub-assembly is assembled to a crankshaft. An internal combustion engine crankshaft;
An outer race fitted to the outer periphery of the crankshaft;
A bearing press-fitted into the outer race;
A ring gear fixed to the outer periphery of the bearing and connected to the outer race via a one-way clutch;
An assembly structure of an internal combustion engine starting device comprising a flywheel integrally fixed to the crankshaft by a fastening member via the outer race,
The ring gear;
The bearing;
The one-way clutch;
An assembly structure of an internal combustion engine starting device, wherein the outer race is integrally assembled to constitute a sub-assembly, and the sub-assembly is assembled to a crankshaft. An internal combustion engine crankshaft;
An outer race integrated with the bearing and fitted to the outer periphery of the crankshaft;
A ring gear fixed to the outer periphery of the bearing and connected to the outer race via a one-way clutch;
An assembly structure of an internal combustion engine starting device comprising a flywheel integrally fixed to the crankshaft by a fastening member via the outer race,
The ring gear;
The one-way clutch;
An assembly structure for an internal combustion engine starting device, wherein a sub-assembly is constructed by integrally assembling an outer race integrated with the bearing, and the sub-assembly is assembled to a crankshaft. An internal combustion engine crankshaft;
A flywheel integrated with an outer race, which is integrally fixed to the crankshaft by a fastening member;
A bearing integrated with the one-way clutch,
An assembly structure of an internal combustion engine starting device, in which a ring gear press-fitted into the outer periphery of the bearing is integrally assembled;
The ring gear;
A bearing integrated with the one-way clutch;
An assembly structure of an internal combustion engine starting device, wherein a sub-assembly is configured by integrally assembling a flywheel integrated with the outer race, and the sub-assembly is assembled to a crankshaft. An internal combustion engine crankshaft;
A bearing inserted into the outer periphery of the crankshaft;
A ring gear fixed to the outer periphery of the bearing;
An outer race connected to the ring gear via a one-way clutch;
A method of assembling an internal combustion engine starting device comprising: a flywheel that is integrally fixed to the crankshaft by a fastening member via the outer race;
The ring gear;
The bearing;
The one-way clutch;
An outer race provided with a fixing means for positioning and fixing the bearing; and a sub-assembly step for constituting a sub-assembly by integrally assembling;
The sub-assembly is fitted to the outer periphery of the crankshaft, one axial end of the inner periphery of the bearing is locked by a flange provided on the outer periphery of the crankshaft, and the other axial end of the bearing is A positioning step in which the bearing of the sub-assembly is positioned in the thrust direction on the outer periphery of the crankshaft in contact with a fixing means;
An internal combustion engine starting device comprising: a fastening step of fastening the crankshaft and the flywheel by means of a fastening member via the sub-assembly and plastically deforming the fixing means by an axial force. Assembly method. An internal combustion engine crankshaft;
A flywheel integrated with an outer race, which is integrally fixed to the crankshaft by a fastening member;
A bearing press-fitted into the outer race;
A ring gear fixed to the outer periphery of the bearing;
A method of assembling an internal combustion engine starter comprising integrally assembling a one-way clutch interposed between the ring gear and the outer race,
The ring gear;
The bearing;
The one-way clutch;
A sub-assembly step for forming a sub-assembly by integrally assembling the flywheel integrated with the outer race;
A positioning step for positioning by positioning the sub-assembly on the outer periphery of the crankshaft;
A method of assembling the internal combustion engine starting device, comprising: a fastening step of fastening the crankshaft and the flywheel with a fastening member through the sub-assembly. An internal combustion engine crankshaft;
An outer race fitted to the outer periphery of the crankshaft;
A bearing press-fitted into the outer race;
A ring gear fixed to the outer periphery of the bearing and connected to the outer race via a one-way clutch;
A method of assembling an internal combustion engine starting device comprising: a flywheel that is integrally fixed to the crankshaft by a fastening member via the outer race;
The ring gear;
The bearing;
The one-way clutch;
A sub-assembly process for forming a sub-assembly by integrally assembling the outer race;
A positioning step for positioning by positioning the sub-assembly on the outer periphery of the crankshaft;
A method of assembling the internal combustion engine starting device, comprising: a fastening step of fastening the crankshaft and the flywheel with a fastening member through the sub-assembly. An internal combustion engine crankshaft;
An outer race integrated with the bearing and fitted to the outer periphery of the crankshaft;
A ring gear fixed to the outer periphery of the bearing and connected to the outer race via a one-way clutch;
A method of assembling an internal combustion engine starting device comprising: a flywheel that is integrally fixed to the crankshaft by a fastening member via the outer race;
The ring gear;
The one-way clutch;
A sub-assembly step for forming a sub-assembly by integrally assembling the outer race integrated with the bearing;
A positioning step for positioning by positioning the sub-assembly on the outer periphery of the crankshaft;
A method of assembling the internal combustion engine starting device, comprising: a fastening step of fastening the crankshaft and the flywheel with a fastening member through the sub-assembly. An internal combustion engine crankshaft;
A flywheel integrated with an outer race, which is integrally fixed to the crankshaft by a fastening member;
A bearing integrated with the one-way clutch,
An assembly method for an internal combustion engine starting device, which is integrally assembled with a ring gear that is press-fitted into the outer periphery of the bearing,
The ring gear;
A bearing integrated with the one-way clutch;
A sub-assembly step for forming a sub-assembly by integrally assembling the flywheel integrated with the outer race;
A positioning step for positioning by positioning the sub-assembly on the outer periphery of the crankshaft;
A method of assembling the internal combustion engine starting device, comprising: a fastening step of fitting the sub-assembly to the crankshaft and fastening with a fastening member.

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