JP2006153035A - Tool for assembling sprag type one-way clutch and method for assembling sprag type one-way clutch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently assemble a one-way clutch into an annular space between an inner side member and an outer side member. <P>SOLUTION: This tool for assembling the one-way clutch into the annular space between an outer ring and an inner ring is provided with a tool for inside diameter insertion capable of being positioned in a concentric condition with the inner ring on an end face of the inner ring and having the same outside diameter as outside diameter of the inner ring and a tool for outside diameter insertion capable of being positioned in a concentric condition with the outer ring on an end face of the outer ring and provided with a tapered guide hole for leading the one-way clutch onto an inside diameter face of the outer ring at the center. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sprag type one-way clutch in the field of a sprag type one-way clutch that is incorporated between a drive member and a driven member of an automobile, a general industrial machine, etc., and transmits rotational power in a fixed direction of the drive member to the driven member. The present invention relates to an assembling jig for incorporating a clutch into an annular space between an inner ring and an outer ring, and also relates to an assembling method for a sprag type one-way clutch using the assembling jig. In this specification, the sprag type one-way clutch is defined as a one-way clutch including a plurality of sprags, a sprag holder that holds each sprag, and a spring body that biases each sprag in a predetermined direction.

  A sprag type one-way clutch (hereinafter simply referred to as a one-way clutch for the sake of explanation) is incorporated between a radially outer drive or driven member (outer ring) and a radially inner driven or driven member (inner ring). The rotational power in a fixed direction from the drive side is transmitted to the driven side through a sprag between the inner ring and the inner ring. When rotational power in a certain direction is applied to the sprag from the drive side, the sprag is bitten between the outer ring and the inner ring (or is not bitten or pressed), and rotational power (torque) is transmitted to the driven side. When the rotational power in the opposite direction is applied, the sprag is in an idling posture and is not caught between the outer ring and the inner ring, and transmission of rotational power is not performed between the driving side and the driven side (patent) Reference 1). In such a one-way clutch, the sprag is incorporated in an annular space between the inner ring and the outer ring in a state of being held by the sprag retainer and the spring body.

  A conventional one-way clutch assembly method will be described with reference to FIGS. First, as shown in FIG. 10, the inner ring 25 is positioned and placed on the support base 20. Next, as shown in FIG. 11, the cylindrical assembly jig 31 is positioned and placed on the support base 20 concentrically with the inner ring 25. Next, as shown in FIG. 12, the one-way clutch 21 is inserted between the assembly jig 31 and the inner ring 25, and an intermediate product including the inner ring 25, the one-way clutch 21 and the assembly jig 31 is assembled. Constitute. Next, as shown in FIG. 13, the assembled product is removed from the support base 20 and placed concentrically on the end surface of the outer ring 26. In this mounted state, as shown in FIG. 14, a pushing jig 37 is inserted from above, and the one-way clutch 21 is pushed into the outer ring 26 to a predetermined assembling depth. In this case, since the pushing force does not act directly on the inner ring 25, the inner ring 25 does not reach the mounting position of the outer ring 26. Thereafter, as shown in FIGS. 15 and 16, the pushing jig 37 and the assembling jig 31 are sequentially removed. Next, as shown in FIG. 17, the inner ring insertion jig 38 fitted in the center of the inner ring 25 is pushed downward while idling, and the inner ring 25 is sufficiently inserted into the outer ring 26. Thereafter, by removing the inner ring insertion jig 38, as shown in FIG. 18, the incorporation of the one-way clutch 21 between the inner and outer rings 25 and 26 is completed.

In the conventional assembling method, as described above, using the jigs 31, 37, 38, the one-way clutch 21 is assembled to the inner ring 25, and the one-way clutch 21 and the inner ring 25 are assembled to the outer ring 26. Therefore, there is room for improvement because the work efficiency of incorporating the one-way clutch is low.
JP-A-60-151426

  Therefore, the problem to be solved by the present invention is to improve the efficiency of assembling work by improving the one-way clutch assembling jig and the assembling procedure.

  (1) A sprag type one-way clutch assembling jig according to the present invention is a sprag type one-way clutch assembling jig for incorporating a sprag type one-way clutch into an annular space between an inner ring and an outer ring, An inner diameter insertion jig that has a cylindrical or columnar shape with the same outer diameter as the inner ring and that can be placed on the inner ring end face in alignment with the inner ring, and an annular with the same inner diameter as the outer ring. An outer diameter insertion jig that can be arranged on the end surface of the outer ring while being aligned with the outer ring is provided.

  The inner diameter insertion jig preferably includes a centering convex portion that can be fitted to the inner diameter surface of the inner ring on the end surface in the assembling direction.

  The outer diameter insertion jig preferably includes a centering step portion that can be fitted to the end face of the outer ring on the end face in the assembling direction.

  According to the assembling jig of the present invention, it is possible to incorporate the sprag type one-way clutch into the annular space between the outer ring and the inner ring with high work efficiency.

  (2) A method for assembling a one-way clutch according to the present invention is a method for incorporating a sprag type one-way clutch into an annular space between an outer ring and an inner ring, wherein the outer ring and the inner ring are arranged concentrically. And a step of placing an inner diameter insertion jig having a cylindrical or columnar shape having the same outer diameter as the inner ring on the inner ring end face with the inner ring, and an outer ring having the same inner diameter as the inner diameter of the outer ring. An insertion annular space formed by the step of arranging the diameter insertion jig on the outer ring end face with the outer ring and the outer diameter surface of the inner diameter insertion jig and the inner diameter surface of the outer diameter insertion jig. And inserting a one-way clutch into the annular space from the annular space for incorporation into the annular space.

  According to the present invention, after the jigs are disposed on the end faces of the inner ring and the outer ring, respectively, the one-way clutch can be connected to the inner ring and the outer ring by a simple and simple operation by simply pushing the one-way clutch in the assembling direction. As a result, the one-way clutch can be incorporated more reliably and in a shorter time than in the prior art, which can contribute to the improvement of the bearing manufacturing yield.

  According to the present invention, it is possible to incorporate a sprag type one-way clutch between the inner and outer rings with good workability.

  Hereinafter, a method for incorporating a one-way clutch according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an enlarged plan view showing a part of a one-way clutch, and FIG. 2 is a perspective view of a jig for incorporating a one-way clutch.

<Configuration of one-way clutch>
Referring to FIG. 1, a one-way clutch 1 includes an annular sprag retainer 2, a plurality of sprags 3, and an annular spring body 4, and is a radially inner driven (or driven) member. The outer ring 6 (or the inner ring) is inserted into the annular space 7 between the inner ring 5 and the outer ring 6 that is a radially outer drive (or driven) member, and through the sprag 3 between the outer ring 6 and the inner ring 5. The rotational power in a certain direction from 5) is transmitted to the inner ring 5 (or the outer ring 6). The sprags 3 are held in the pockets 8 of the sprag holder 2 at predetermined intervals in the circumferential direction, and the spring bodies 4 are arranged radially inward of the sprag holder 2 to urge each sprag 3 in a predetermined direction. A spring piece 4a is formed. The predetermined direction is a direction in which the outer diameter cam surface 3a of the sprag 6 is engaged with the inner peripheral surface 9 of the outer ring 6, and the inner diameter cam surface 3b of the sprag 3 is engaged with the outer peripheral surface 10 of the inner ring 5. As the sprag 3 is engaged, the inner and outer rings 5 and 6 are integrally rotated in the same direction (constant direction), and rotational power is transmitted from the drive side to the driven side. On the other hand, when rotational power in the opposite direction from the outer ring 6 (or inner ring 5) is applied to the sprag 3, the sprag 3 is not caught between the outer ring 6 and the inner ring 5, and the outer ring 6 and the inner ring 5 Rotational power is not transmitted between the two.

<Configuration of jig 11 for incorporating one-way clutch>
The one-way clutch assembly jig 11 will be described with reference to FIG. In FIG. 2, the downward direction is referred to as an assembling direction for convenience of explanation. The one-way clutch assembling jig 11 is used for incorporating the one-way clutch 1 into the annular space 7 between the inner and outer rings 5 and 6, and the inner diameter insertion for guiding the one-way clutch 1 from the inner diameter side. The jig 12 includes an outer diameter insertion jig 13 that guides the one-way clutch 1 from the outer diameter side.

  The inner diameter insertion jig 12 is formed in a short cylindrical shape, and the outer diameter thereof is the same as the outer diameter of the inner ring 5, and is fitted into the center hole 14 of the inner ring 5 at the center of one end surface in the assembling direction. A possible columnar centering convex portion 12a is formed. The centering convex portion 12a forms an annular step portion 12b that receives the upper end surface 5a of the inner ring 5 in the outer diameter side region of one end surface of the inner diameter insertion jig 12 in the assembling direction.

  The outer diameter insertion jig 13 has a short cylindrical main body 13a and an annular handling flange 13b extending in the outer diameter direction on the outer periphery in one axial direction of the main body 13a, and at the center of the main body 13a. Is formed with a circular guide hole 15 for guiding the one-way clutch 1 through. The guide hole 15 is formed as a tapered hole having a diameter that decreases from the introduction opening 15 a for introducing the one-way clutch 1 toward the lead-out opening 15 b that leads to the annular space 7. An annular centering step 15c is formed on the outer diameter side region of the end surface of the main body 13a on the one end side in the assembling direction.

<How to install a one-way clutch>
Next, referring to FIG. 3 to FIG. 9, the inner diameter insertion jig 12 and the outer diameter insertion jig 13 of the one-way clutch assembly jig 11 are inserted into the annular space 4 between the outer ring 2 and the inner ring 3. A method of incorporating the one-way clutch 1 using the above will be described.

  First, as shown in FIG. 3, the inner ring 5 is inserted into the center of the outer ring 6.

  Next, as shown in FIG. 4, the centering protrusion 12 a of the inner diameter insertion jig 12 is inserted into the center hole 14 of the inner ring 5, and the outer diameter surface of the inner diameter insertion jig 12 and the outer peripheral surface of the inner ring 5 are Is aligned with the assembling direction, and the annular step 12b on the lower end surface of the inner diameter insertion jig 12 and the upper end surface 5a of the inner ring 5 are fitted and connected concentrically.

  Next, as shown in FIG. 5, the alignment step 15c on the lower surface of the main body 13a of the outer diameter insertion jig 13 is aligned with the step 6a on the upper end surface of the outer ring 6 to insert the outer diameter. The lower end surface of the jig 13 and the upper end surface of the outer ring 6 are fitted and connected concentrically. By this connection, an assembling annular space 16 is formed between the inner diameter inserting jig 12 and the outer diameter inserting jig 13.

  Next, as shown in FIG. 6, the one-way clutch 1 including the sprag retainer 2, the sprag 3 and the spring body 4 is inserted into the assembling annular space 16 from its upper end. In this case, the introduction opening 15a of the guide hole 15 in the outer diameter insertion jig 13 has a tapered shape that is larger than the outer diameter of the one-way clutch 1, and the sprag 3 of the one-way clutch 1 is inserted into the introduction opening 15a. It can be smoothly inserted into the assembling annular space 16 without being caught on the edge. Since the guide hole 15 is narrowed downward, the one-way clutch 1 is received in the middle of the guide hole 15.

  Next, as shown in FIG. 7, a cylindrical pushing jig 17 is inserted from above the built-in annular space 16, and the one-way clutch 1 is inserted into the annular space 7 between the inner and outer rings 5, 6 at a predetermined depth. Press down.

  Next, as shown in FIG. 8, the pushing jig 17 is removed.

  Finally, as shown in FIG. 9, the outer diameter insertion jig 13 and the inner diameter insertion jig 12 are removed to complete the assembly of the one-way clutch 1 between the inner and outer rings 5 and 6.

<Comparison of integration method between this embodiment and conventional>
(1) Conventionally, the inner ring 25 and the assembly jig 31 are assembled on the support base 20. In the assembled state, the one-way clutch 21 is assembled to obtain an assembled product. Next, the product being assembled is removed from the support base 20 and incorporated into the outer ring 26. Next, the one-way clutch 1 is pushed by the pushing jig 37, then the assembling jig 31 is removed, and the inner ring 25 is pushed by the inner ring inserting jig 38. Thereafter, the inner ring insertion jig 38 is removed.

  That is, in the conventional assembling method, the assembly of the intermediate product on the support base 20, the transfer of the intermediate product to the outer ring 26, the attachment of the pushing jig 37, the pushing and removing, the removal of the incorporating jig 31, Since the inner ring insertion jig 38 is attached, pushed, and removed, the assembly procedure is complicated, and many assembly steps such as attachment and removal of many jigs and transfer of workpieces are required.

  (2) In this embodiment, the inner ring 5 and the outer ring 6 are assembled, the jigs 12 and 13 are attached to the inner ring 5 and the outer ring 6, respectively, the pushing jig 17 is pushed, both the jigs 12 and 13 are removed, As described above, there is no support base, no jigs are replaced, the assembly work of the one-way clutch is simplified, and the man-hours can be reduced. Therefore, the assembly workability of the one-way clutch is greatly increased. It has been improved.

  Although the preferred embodiments of the present invention have been described above, various modifications and changes can be made without departing from the spirit and scope of the present invention, as will be readily understood by those skilled in the art. Such variations and modifications are within the scope of the present invention and claims.

Partially enlarged sectional view of one-way clutch Partially cutaway perspective view of a jig for incorporating a one-way clutch according to an embodiment Sectional drawing which shows the first process of the one-way clutch incorporating method which concerns on embodiment Sectional drawing which shows the next process of the one-way clutch incorporating method which concerns on embodiment Sectional drawing which shows the next process of the one-way clutch incorporating method which concerns on embodiment Sectional drawing which shows the further next process of the one-way clutch incorporating method which concerns on embodiment Sectional drawing which shows the further next process of the one-way clutch incorporating method which concerns on embodiment Sectional drawing which shows the further next process of the one-way clutch incorporating method which concerns on embodiment Sectional drawing which shows the further next process of the one-way clutch incorporating method which concerns on embodiment Sectional drawing which shows the first process of the conventional one-way clutch assembly procedure Sectional drawing which shows the next process of the conventional one-way clutch assembly procedure Sectional drawing which shows the next process of the conventional one-way clutch assembly procedure Sectional drawing which shows the next process of the conventional one-way clutch assembly procedure Sectional drawing which shows the next process of the conventional one-way clutch assembly procedure Sectional drawing which shows the next process of the conventional one-way clutch assembly procedure Sectional drawing which shows the next process of the conventional one-way clutch assembly procedure Sectional drawing which shows the next process of the conventional one-way clutch assembly procedure Sectional drawing which shows the next process of the conventional one-way clutch assembly procedure

Explanation of symbols

1 one-way clutch 2 sprag retainer 3 sprag 5 inner ring 6 outer ring 9 outer ring inner diameter surface 10 inner ring outer diameter surface 11 one-way clutch assembly jig 12 inner diameter insertion jig 13 outer diameter insertion jig 16 assembly ring space

Claims (4)

In the assembly tool of the sprag type one-way clutch that incorporates the sprag type one-way clutch into the annular space between the inner ring and the outer ring,
An inner diameter insertion jig that is cylindrical or columnar with the same outer diameter as the inner ring and that can be placed on the inner ring end face in alignment with the inner ring;
An outer diameter insertion jig which has an annular shape with the same inner diameter as the inner diameter of the outer ring and can be arranged on the outer ring end face in alignment with the outer ring;
A jig for assembling a sprag type one-way clutch characterized by comprising:   The sprag type one-way clutch assembling jig according to claim 1, wherein the inner diameter inserting jig includes a centering convex portion that can be fitted to an inner diameter surface of the inner ring on an end surface in the assembling direction.   3. The sprag type one-way clutch assembly jig according to claim 1, wherein the outer diameter insertion jig includes a centering step portion that can be fitted to an end surface of the outer ring on an end surface in the assembling direction. Ingredients. In the assembling method for incorporating the sprag type one-way clutch into the annular space between the outer ring and the inner ring,
Arranging the outer ring and the inner ring concentrically;
A step of arranging an inner diameter insertion jig having a cylindrical shape or a columnar shape with the same outer diameter as the inner diameter of the inner ring on the inner ring end face in alignment with the inner ring;
Arranging an outer diameter insertion jig having an annular shape with the same inner diameter as the inner diameter of the outer ring on the outer ring end face in alignment with the outer ring;
Inserting a one-way clutch into an annular mounting space formed by the outer diameter surface of the inner diameter insertion jig and the inner diameter surface of the outer diameter insertion jig;
Pushing the one-way clutch from the annular space for incorporation into the annular space and incorporating it;
A method for assembling a sprag type one-way clutch characterized by comprising:

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