JP3208127U - E-type retaining ring insertion tool - Google Patents

Abstract

An E-shaped retaining ring insertion tool suitable for inserting E-shaped retaining rings of a plurality of sizes in a place where a width in a longitudinal direction of a shaft is narrow is provided. An E-type retaining ring insertion tool includes a first rod-like member 11 having a first gripping portion 20 and a first locking portion 17, a second gripping portion 21, and a second locking portion. 14 is a pliers-type E-shaped retaining ring insertion tool that is pivotally supported at each intermediate portion. is there. Further, the first locking portion 17 has a plate-like holding piece for holding the E-shaped retaining ring, and the second locking portion 14 is attached to the shaft when the E-shaped retaining ring is inserted. And a plate-like receiving piece that abuts against the plate. The holding piece and the receiving piece are a plurality of types of replaceable members having different shapes depending on the size of the E-shaped retaining ring to be inserted. [Selection] Figure 2

Description

  The present invention relates to an E-type retaining ring insertion tool.

  Various tools have been developed as means for inserting the E-shaped retaining ring into the shaft. For example, stick-like insertion tools that sandwich the outer periphery of an E-shaped retaining ring with an elastic holding member are widely used. When the E-type retaining ring is inserted into the shaft using this tool, the user presses the tool against the shaft with a strong force.

  In addition, a plier type E-type retaining ring insertion tool has been proposed as a tool that does not require the user to press the tool against the shaft with a strong force. When inserting an E-shaped retaining ring into a shaft using a plier-type E-shaped retaining ring insertion tool, the user grasps the two grips provided on the E-shaped retaining ring insertion tool and brings them closer to each other. The shaft is sandwiched between the tip portion holding the retaining ring and the tip portion receiving the shaft. For example, the E-type retaining ring insertion tool described in Patent Document 1 is configured so that two parts for inserting the E-shaped retaining ring are configured to be shifted in a direction perpendicular to the rotation direction, so that only the E-shaped retaining ring is attached. It can also be used for removal. The E-type retaining ring insertion tool described in Patent Document 2 is finally shaped, a U-shaped groove is formed at one tip, and the other tip is thin and narrow. Desorption according to the size difference of the retaining ring is possible. The E-type retaining ring insertion tool described in Patent Document 3 includes E-type retaining ring supply means.

JP-A-11-216683 JP 2007-038324 A JP 2009-178793 A

  However, each of the E-shaped retaining ring insertion tools described in Patent Document 1 and Patent Document 3 has a thickness in the length direction of the shaft into which the E-shaped retaining ring is inserted. That is, the tool described in Patent Document 1 is configured such that the operation portions on the tip side are displaced from each other in the direction orthogonal to the rotation direction. The tool described in Patent Document 3 has a support plate below the E-shaped retaining ring. Therefore, it has been difficult to insert the E-shaped retaining ring in a place where the width is narrow in the length direction of the shaft into which the E-shaped retaining ring is inserted.

  Further, when using a stick-shaped insertion tool for such a place, it is necessary to prepare a stick-shaped insertion tool for each size of the E-shaped retaining ring. On the other hand, Patent Document 2 describes that it is not necessary to use different tools depending on the size difference of the E-shaped retaining ring. However, since the tool described in Patent Document 2 cannot support the outer periphery of the E-shaped retaining ring, the E-shaped retaining ring may be deformed when inserted.

  The present invention has been made to solve such problems, and for inserting a plurality of sizes of E-shaped retaining rings in a place where the width of the shaft in which the E-shaped retaining ring is inserted is narrow. An object of the present invention is to provide a suitable E-type retaining ring insertion tool.

  The E-type retaining ring insertion tool according to the present invention includes a first rod-shaped member having a first gripping portion at one end and a first locking portion at the other end, and a first rod at one end. A second rod-shaped member having a second gripping portion and a second locking portion at the other end, and the first rod-shaped member and the second rod-shaped member A plate-like holding piece that is rotatably supported, is exchangeably locked to the first locking portion, and holds an E-shaped retaining ring by the first clamping portion and the second clamping portion; A plate-shaped receiving piece that is exchangeably locked to the second locking portion and contacts at one point on a surface perpendicular to the shaft when the E-shaped retaining ring is inserted into the shaft; The holding piece and the receiving piece sandwich the shaft so that the first gripping portion and the second gripping portion are brought close to each other. A plier-type E-shaped retaining ring insertion tool for inserting a retaining ring, wherein the holding piece and the receiving piece are a plurality of types of interchangeable members having different shapes depending on the size of the E-shaped retaining ring to be inserted. It is.

  With such a configuration, the E-shaped retaining ring can be inserted in a narrow place in the length direction of the shaft. Moreover, it can respond to the several size of an E-shaped retaining ring by replacing | exchanging a holding piece and a receiving piece, respectively.

  Further, in the E-type retaining ring insertion tool according to the present invention, when the E-shaped retaining ring is inserted into the shaft, the receiving piece comes into contact with the shaft on a plane perpendicular to the central axis of the shaft. The straight line connecting the contact portion and the central axis of the shaft may pass through the gap between the first clamping portion and the second clamping portion in the holding piece.

  With such a configuration, a plurality of sizes of E-shaped retaining rings can be accurately inserted.

  Further, in the E-shaped retaining ring insertion tool according to the present invention, a V-shaped or U-shaped groove is formed in each of the first clamping part and the second clamping part, You may hold | maintain the ridgeline of the external shape along one plane of the said E-shaped retaining ring, and the ridgeline of the external shape along the other plane, respectively.

  With such a configuration, a plurality of sizes of E-shaped retaining rings can be reliably held in a place where the length of the shaft into which the E-shaped retaining rings are inserted is narrow.

  In the E-type retaining ring insertion tool according to the present invention, the contact portion of the receiving piece may be formed in a columnar shape.

  With such a configuration, one type of receiving piece can correspond to a plurality of sizes of E-shaped retaining rings, and the receiving piece replacement frequency can be reduced.

  The holding piece is bent between a portion locked by the first locking portion and the first holding portion and the second holding portion, and the receiving piece is the first holding portion. 2 may be bent between a portion locked by the two locking portions and a contact portion where the receiving piece contacts the shaft.

  With such a configuration, a plurality of sizes of E-shaped retaining rings can be inserted in a place where the width of the shaft into which the E-shaped retaining ring is inserted is narrow and the radial direction of the shaft is also narrow. .

  According to the present invention, it is possible to provide an E-shaped retaining ring insertion tool suitable for inserting a plurality of sizes of E-shaped retaining rings in a place where the length of the shaft into which the E-shaped retaining ring is inserted is narrow.

It is the front view and bottom view of the E type retaining ring insertion tool 100 concerning Embodiment 1. FIG. FIG. 2 is a front view and a bottom view of a main body 10 in an E-type retaining ring insertion tool 100 according to a first embodiment. It is the front view, sectional drawing, and bottom view of the holding piece 30 in the E-shaped retaining ring insertion tool 100 concerning Embodiment 1. FIG. 3 is a front view and a bottom view of a receiving piece 40 in an E-shaped retaining ring insertion tool 100 according to Embodiment 1. FIG. FIG. 6 is an operation explanatory diagram of the E-type retaining ring insertion tool 100 according to the first embodiment. FIG. 6 is an operation explanatory diagram of the E-type retaining ring insertion tool 100 according to the first embodiment. It is the front view and bottom view of the E type retaining ring insertion tool 200 concerning Embodiment 2. FIG. It is the front view, bottom view, and left view of the holding piece 50 in the E-shaped retaining ring insertion tool 200 concerning Embodiment 2. FIG. It is the front view of the receiving piece 60 in the E-shaped retaining ring insertion tool 200 concerning Embodiment 2, a bottom view, and a left view. It is the left view and bottom view of E type retaining ring insertion tool 300 concerning Embodiment 3. FIG.

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. First, the configuration of the E-type retaining ring insertion tool 100 according to the first embodiment will be described with reference to FIG. FIG. 1A is a front view of the E-type retaining ring insertion tool 100 according to the first embodiment. The E-type retaining ring insertion tool 100 is a pliers type E-shaped retaining ring insertion tool. The E-shaped retaining ring insertion tool 100 includes a main body 10, a holding piece 30, and a receiving piece 40. The holding piece 30 is locked to the main body 10 by the fastening portion 15. The receiving piece 40 is locked to the main body 10 by the fastening portion 18. The holding piece 30 and the receiving piece 40 can be exchanged by loosening the fastening portion 15 and the fastening portion 18. Note that xyz coordinates are shown in FIG. The x plus direction is a depth direction perpendicular to the paper surface. The y plus direction is the right direction of the page. The z plus direction is the upward direction on the page. As a matter of course, the right-handed xyz coordinates shown in FIGS. 1 to 9 are convenient for explaining the positional relationship of the components. The z-axis direction in FIG. 1 and the z-axis direction in FIGS.

  FIG. 1B is a bottom view of the E-type retaining ring insertion tool 100 according to the first embodiment. The holding piece 30 and the receiving piece 40 have a thickness B, and the thickness direction, that is, the position in the x direction coincides. If the relative positions of the holding piece 30 and the receiving piece 40 coincide with each other in the thickness direction and the gap between the shafts into which the E-shaped retaining rings are inserted is larger than B, the E-shaped retaining ring insertion tool 100 is used. E-type retaining rings can be inserted.

  Next, details of each part will be described with reference to FIGS. FIG. 2A is a front view of the main body 10 in the E-type retaining ring insertion tool 100 according to the first embodiment. FIG. 2B is a bottom view of the main body 10 in the E-type retaining ring insertion tool 100 according to the first embodiment. The main body 10 includes a rod-shaped member 11, a rod-shaped member 12, and a coil spring 23. The rod-shaped member 11 and the rod-shaped member 12 are pivotally supported at a fulcrum 13 in each intermediate portion, and are attached to each other so as to be rotatable.

  The coil spring 23 is a compression coil spring. One end of the coil spring 23 is fitted to the rod-shaped member 11, the other end is fitted to the rod-shaped member 12, and the rod-shaped member 11 and the gripping portion of the rod-shaped member 12 are urged away from each other. .

  The rod-shaped member 11 has a grip 20 at one end. Occasionally, the bar-shaped member 11 has a locking portion 17 at the other end. The rod-shaped member 11 bends at a substantially right angle at the intermediate portion from the gripping portion 20 toward the locking portion 17, and further, the longitudinal direction of the gripping portion 20 and the longitudinal direction of the locking portion 17 are substantially parallel. It is bent again to become. The rod-shaped member 11 is formed by pressing or cutting a stainless steel plate. Further, the stainless steel plate may be subjected to nitriding treatment or carburizing treatment after being pressed or cut, thereby increasing the surface hardness and the rigidity. The grip portion 20 serves as a handle when the user grips the E-type retaining ring insertion tool 100. The grip portion 20 is formed by molding an elastic body such as an elastomer or synthetic rubber around the rod-shaped member 11. The locking part 17 has a fastening part 18 and a recessed part 19. The fastening portion 18 has a screw and fastens the receiving piece 40. That is, the receiving piece 40 is locked to the locking portion 17. More specifically, the receiving piece 40 is fitted into the concave portion 19 of the locking portion 17 and is fixed by the fastening portion 18.

  The rod-shaped member 12 has a grip portion 21 at one end. Further, the rod-shaped member 12 has a locking portion 14 at the other end. Similarly to the rod-shaped member 11, the rod-shaped member 12 also bends at a substantially right angle at the intermediate portion from the gripping portion 21 toward the locking portion 14, and further, the longitudinal direction of the gripping portion 21 and the locking portion 14. It is bent again so that the longitudinal direction is substantially parallel. The rod-shaped member 12 is formed by pressing or cutting a stainless steel plate. Further, the stainless steel plate may be subjected to nitriding treatment or carburizing treatment after being pressed or cut, thereby increasing the surface hardness and the rigidity. The grip part 21 becomes a handle when the user grips the E-shaped retaining ring insertion tool 100 together with the grip part 20. The grip portion 21 is formed by molding an elastic body such as elastomer or synthetic rubber around the rod-shaped member 12. The locking portion 14 includes a fastening portion 15 and a recessed portion 16. The fastening part 15 has a screw and fastens the holding piece 30. That is, the holding piece 30 is locked to the locking portion 14. More specifically, the holding piece 30 engages with the concave portion 16 of the locking portion 14 and is fixed by the fastening portion 15.

  The rod-shaped member 12 includes a stopper 22 in the vicinity of the fulcrum 13. The stopper 22 has a convex shape protruding from the main surface of the rod-shaped member 12. The stopper 22 regulates the opening angle of the rod-shaped member 11 and the rod-shaped member 12. That is, the rod-shaped member 11 and the rod-shaped member 12 are urged by the coil spring 23 in a direction in which the grip portion 20 and the grip portion 21 are separated from each other. And the position of the rod-shaped member 11 and the rod-shaped member 12 is hold | maintained in the position where the side surface of the rod-shaped member 11 contact | abuts to the stopper 22. FIG.

  Thus, by providing the stopper 22, it is possible to maintain an opening angle that is easy for the user to operate. Moreover, with such a configuration, it is possible to suppress the E-shaped retaining ring insertion tool 100 from being opened too much and to shorten the E-shaped retaining ring insertion operation time.

  Next, the holding piece 30 will be described with reference to FIG. FIG. 3 is a front view, a sectional view, and a bottom view of the holding piece 30 in the E-type retaining ring insertion tool 100 according to the first embodiment. The holding piece 30 is a flat holding member, and is formed by pressing or cutting a stainless steel plate. Further, the stainless steel plate may be subjected to nitriding treatment or carburizing treatment after being pressed or cut, thereby increasing the surface hardness and the rigidity. The holding piece 30 is an independent holding member. As the material of the holding piece 30, since predetermined rigidity and elasticity are required, it is preferable to use austenitic stainless steel or the like. The material of the holding piece 30 is not limited to austenitic stainless steel, and martensitic stainless steel, other iron-based alloys, spring materials, and the like can also be used.

  The holding piece 30 includes a hole 31, a clamping part 34, an arm part 35, and a clamping part 36. When the hole 31 is locked to the locking portion 14 of the main body 10, the hole 31 is inserted by the screw of the fastening portion 15. The hole 31 includes a large diameter portion 32 and a small diameter portion 33. The large diameter portion 32 is larger than the screw head of the fastening portion 15, and the small diameter portion 33 is smaller than the screw head of the fastening portion 15. Therefore, when the holding piece 30 is locked to the locking portion 14 of the main body 10, first, the large diameter portion 32 of the hole 31 and the fastening portion 15 of the main body 10 are loosely fitted. Subsequently, the holding piece 30 is slid to engage the small diameter portion 33 and the fastening portion 15. When the small-diameter portion 33 and the fastening portion 15 are engaged, the holding piece 30 is fitted into the concave portion 16 of the locking portion 14. After this, the holding piece 30 is locked to the main body 10 by tightening the screw of the fastening portion 15. At this time, the outer shape of the holding piece 30 in the vicinity of the hole 31 coincides with the inner shape of the recess 16 with a predetermined clearance, so that the holding piece 30 and the locking portion 14 are not easily displaced.

  In FIG. 3A, a two-dot chain line represents the E-shaped retaining ring 110. The clamping part 34 and the clamping part 36 clamp the E-shaped retaining ring 110. The clamping part 36 is connected to the clamping part 34 via the arm part 35. A slit-shaped gap 37 is formed between the clamping part 34 and the clamping part 36. Further, the sandwiching portion 34 and the sandwiching portion 36 form a semicircle having a diameter smaller than the outer diameter of the E-shaped retaining ring 110. The arm portion 35 has predetermined rigidity and elasticity. Therefore, when the E-shaped retaining ring is mounted, the holding piece 30 clamps the outer diameter of the E-shaped retaining ring in the y direction shown in FIG. In this case, the holding piece 30 can hold the E-shaped retaining ring in the radial direction by the elasticity of the arm portion 35.

  Next, the cross-sectional shape of the clamping part 34 and the clamping part 36 is demonstrated. FIG. 3B is a cross-section II-II of the holding piece 30. In FIG. 3B, the two-dot chain line represents the E-shaped retaining ring 110. The clamping part 34 and the clamping part 36 are formed with grooves. FIG. 3B shows a V-shaped groove as an example. In other words, the sandwiching portion 34 and the sandwiching portion 36 are each formed with a groove having an arbitrary angle A of less than 90 degrees with respect to the y direction. Thereby, the holding piece 30 contacts the ridgeline 38 and the ridgeline 39 of the outer shape of the E-shaped retaining ring, respectively. Therefore, the holding piece 30 can reliably hold the E-shaped retaining ring 110 even in the thickness direction. In addition, the groove | channel formed in the clamping part 34 and the clamping part 36 is not restricted to V shape, A U shape may be sufficient.

  Next, the thickness of the holding piece 30 will be described. FIG. 3C is a bottom view of the holding piece 30 in the E-type retaining ring insertion tool 100 according to the first embodiment. As shown in FIG. 3C, the holding piece 30 has a plate shape with a thickness B. Specifically, the thickness B is, for example, the thickness of the E-shaped retaining ring 110 plus 0.4 mm. That is, in the state where the holding piece 30 holds the E-shaped retaining ring 110, the step in the x direction between the surface of the E-shaped retaining ring 110 and the main surface of the holding piece 30 is 0.2 mm. Similarly, in the state where the holding piece 30 holds the E-shaped retaining ring 110, the step in the x direction between the back surface of the E-shaped retaining ring 110 and the main surface of the holding piece 30 is 0.2 millimeters.

  The shape of the holding piece 30 varies depending on the size of the E-shaped retaining ring. That is, the E-type retaining ring insertion tool 100 includes the holding pieces 30 having a plurality of different shapes according to the size of the E-shaped retaining ring.

  Next, the receiving piece 40 will be described with reference to FIG. FIG. 4 is a front view and a bottom view of the receiving piece 40 in the E-type retaining ring insertion tool 100 according to the first embodiment. The receiving piece 40 is a flat receiving member, and is formed by pressing or cutting a metal plate such as a stainless steel plate. Further, the stainless steel plate may be subjected to nitriding treatment or carburizing treatment after being pressed or cut, thereby increasing the surface hardness and the rigidity. The receiving piece 40 is an independent single receiving member.

  The receiving piece 40 includes a hole 41 and a contact portion 45. When the hole 41 is locked to the locking portion 17 of the main body 10, the hole 41 is inserted by a screw of the fastening portion 18. The hole 41 includes a large diameter portion 42 and a small diameter portion 43. The large diameter portion 42 is larger than the screw head of the fastening portion 18, and the small diameter portion 43 is smaller than the screw head of the fastening portion 18. The method of locking the receiving piece 40 to the locking portion 17 of the main body 10 is the same as that of the holding piece 30 described above. Therefore, description is abbreviate | omitted here.

  Next, the contact part 45 of the receiving piece 40 will be described. The contact portion 45 contacts the shaft when the E-shaped retaining ring is inserted into the shaft by the E-shaped retaining ring insertion tool 100. That is, the E-shaped retaining ring held by the retaining piece 30 and the contact portion 45 of the receiving piece 40 sandwich the shaft and apply pressure to the shaft, thereby inserting the E-shaped retaining ring into the shaft.

In the first embodiment, the contact portion 45 is formed in a cylindrical shape. That is, by adopting such a shape, the contact portion 45 contacts the shaft at one point on a surface perpendicular to the length direction of the shaft.

  Next, the thickness of the receiving piece 40 will be described. FIG. 4B is a bottom view of the receiving piece 40 in the E-type retaining ring insertion tool 100 according to the first embodiment. As shown in FIG. 4B, the receiving piece 40 has a plate shape with a thickness B. Specifically, the thickness B is, for example, the thickness of the E-shaped retaining ring 110 plus 0.4 mm.

  The shape of the receiving piece 40 varies depending on the size of the E-shaped retaining ring. That is, the E-shaped retaining ring insertion tool 100 includes a plurality of types of receiving pieces 40 according to the size of the E-shaped retaining ring.

  Next, the correspondence of the size of the E-type retaining ring will be described. The E-shaped retaining ring has an optimum size selected from a plurality of sizes depending on the shaft to be inserted. Therefore, conventionally used stick-shaped insertion tools have to be prepared according to the number of sizes to be used. On the other hand, the E-type retaining ring insertion tool 100 according to the first embodiment may prepare the holding pieces 30 according to the number of sizes of the E-shaped retaining rings. Further, the receiving piece 40 can correspond to one type of receiving piece 40 for a plurality of sizes. Here, by reducing the radius of the portion of the abutting portion 45 formed in a columnar shape, one type of receiving piece can correspond to a plurality of sizes of E-shaped retaining rings. The frequency can be lowered. To give a specific example, a receiving piece 40 with R1.5 mm is prepared for an E-shaped retaining ring having an outer diameter of 2 mm to 4 mm, and R3 mm is attached to an E-shaped retaining ring with an outer diameter of 5 mm to 8 mm. A receiving piece 40 can be prepared.

  By adopting such a configuration, the E-shaped retaining ring can be securely held in a place where the width of the shaft into which the E-shaped retaining ring is inserted is narrow. Further, by replacing the holding piece 30 and the receiving piece 40, it is possible to easily insert a plurality of sizes of E-shaped retaining rings.

  Next, the operation of the E-type retaining ring insertion tool 100 according to the first embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is an operation explanatory diagram of the E-type retaining ring insertion tool 100 according to the first embodiment. 5 and 6, the shaft 120 is shown in a sectional view for convenience of explanation. The outer shape of the shaft 120 is the outer diameter of the shaft. The hatched portion of the shaft 120 is a portion where a groove for inserting an E-shaped retaining ring is formed.

  The E-shaped retaining ring insertion tool 100 retains the E-shaped retaining ring 110 on the retaining piece 30. The holding piece 30 and the receiving piece 40 sandwich the shaft 120. At this time, the opening of the E-shaped retaining ring fits into the groove of the shaft 120. Therefore, the E-type retaining ring insertion tool 100 is stable in the axial direction of the shaft, that is, in the x direction in FIG. The E-shaped retaining ring 110 is inserted into the shaft 120 when the user grasps the grip portion 20 and the grip portion 21 and brings them close to each other in a state where the position in the x direction is stable.

  Subsequently, a state where the insertion of the E-shaped retaining ring is completed will be described. FIG. 6 is an operation explanatory diagram of the E-type retaining ring insertion tool 100 according to the first embodiment. The E-type retaining ring 110 is inserted into the groove portion of the shaft 120. Here, a straight line C connecting the center 121 of the shaft 120 and the contact portion 45 of the receiving piece 40 in the plane yz perpendicular to the central axis of the shaft 120 is the holding portion 30 and the holding portion 30 of the holding piece 30. It passes through a gap 37 with 36. With such a configuration, the E-shaped retaining ring can be accurately inserted.

  As described with reference to FIGS. 3 and 4, the holding piece 30 and the receiving piece 40 are exchanged according to the size of the E-shaped retaining ring. As for the holding piece 30 and the receiving piece 40 to be exchanged, as described with reference to FIG. 6, the straight line C connecting the center 121 of the shaft 120 and the contact portion 45 of the receiving piece 40 is the holding piece 30. The gap 37 between the clamping part 34 and the clamping part 36 is passed. With such a configuration, a plurality of sizes of E-shaped retaining rings can be accurately inserted.

  With the above configuration, an E-shaped retaining ring insertion tool suitable for inserting a plurality of sizes of E-shaped retaining rings in a place where the width in the length direction of the shaft into which the E-shaped retaining ring is inserted is narrow. Can do.

Embodiment 2
Next, a second embodiment according to the present invention will be described. In the E-type retaining ring insertion tool 200, the E-type retaining ring insertion tool 100 and the main body 10 according to the first embodiment are the same, and only the holding piece 50 and the receiving piece 60 are different. Therefore, the description of the part which overlaps with Embodiment 1 is abbreviate | omitted.

  FIG. 7A is a front view of the E-type retaining ring insertion tool 200 according to the first embodiment. The E-type retaining ring insertion tool 200 includes a main body 10, a holding piece 50, and a receiving piece 60. The holding piece 50 is locked by the fastening portion 15. Further, the receiving piece 60 is locked by the fastening portion 18.

  FIG. 7B is a bottom view of the E-type retaining ring insertion tool 200 according to the first embodiment. The holding piece 50 and the receiving piece 60 have a thickness B, and the positions in the thickness direction coincide with each other. Moreover, the holding piece 50 and the receiving piece 60 are each bent in an L shape. In FIG. 7B, the L-shaped bending angle D is 90 degrees.

  If the holding piece 50 and the receiving piece 60 are coincident in the thickness direction so that the gap between the shafts into which the E-shaped retaining ring is inserted is larger than B, the E-shaped retaining ring is used by using the E-shaped retaining ring insertion tool 200. Can be inserted. Further, since the holding piece 50 and the receiving piece 60 are bent at an angle D, it is possible to insert a plurality of sizes of E-shaped retaining rings even in a narrow place in the radial direction of the shaft into which the E-shaped retaining rings are inserted.

  Next, details of the holding piece 50 will be described. FIG. 8 is a front view, a bottom view, and a left side view of the holding piece 50 in the E-type retaining ring insertion tool 200 according to the second embodiment.

  The holding piece 50 includes a hole 51, a clamping part 54, an arm part 55, and a clamping part 56. The hole 51 is engaged with the fastening portion 15 when the hole 51 is locked to the locking portion 14 of the main body 10. The hole 51 includes a large diameter portion 52 and a small diameter portion 53. The large diameter portion 52 is larger than the screw head of the fastening portion 15, and the small diameter portion 53 is smaller than the screw head of the fastening portion 15. Therefore, the holding piece 50 is locked to the main body 10 in the same manner as the holding piece 30 described in FIG.

  The clamping part 54 and the clamping part 56 clamp an E-shaped retaining ring. The clamping part 56 is connected to the clamping part 54 via the arm part 55. A slit-like gap 57 is formed between the clamping part 54 and the clamping part 56. Moreover, the clamping part 54 and the clamping part 56 form the semicircle of a diameter smaller than the outer diameter of an E-shaped retaining ring. The arm portion 55 has predetermined rigidity and elasticity. Further, as in the holding piece 30, a groove is formed in the holding portion 54 and the holding portion 56. Therefore, the holding piece 50 can hold the E-shaped retaining ring in the radial direction and the thickness direction similarly to the holding piece 30 described in FIG.

  Next, the shape of the holding piece 50 in the thickness direction will be described. FIG. 3B is a bottom view of the holding piece 50 in the E-type retaining ring insertion tool 200 according to the second embodiment. As shown in FIG. 3B, the holding piece 50 has a shape in which a plate having a thickness B is bent at an angle D.

  FIG. 9 is a front view, a bottom view, and a left side view of the receiving piece 60 in the E-type retaining ring insertion tool according to the second embodiment.

  The receiving piece 60 includes a hole 61 and a contact portion 65. The hole 61 is engaged with the fastening portion 18 when the hole 61 is locked to the locking portion 17 of the main body 10. The hole 61 includes a large diameter portion 62 and a small diameter portion 63. The large diameter portion 62 is larger than the screw head of the fastening portion 18, and the small diameter portion 63 is smaller than the screw head of the fastening portion 18. The method of locking the receiving piece 60 to the locking portion 17 of the main body 10 is the same as that of the holding piece 30 described in FIG. Therefore, description is abbreviate | omitted here.

  Next, the contact portion 65 of the receiving piece 60 will be described. The contact portion 65 contacts the shaft when the E-shaped retaining ring is inserted into the shaft by the E-shaped retaining ring insertion tool 200. That is, the E-shaped retaining ring held by the retaining piece 50 and the contact portion 65 of the receiving piece 60 sandwich the shaft and apply pressure to the shaft, thereby inserting the E-shaped retaining ring into the shaft.

  In the second embodiment, the contact portion 65 is formed in a columnar shape. That is, by adopting such a shape, the abutment portion 65 abuts the shaft at one point on a plane perpendicular to the length direction of the shaft.

  Next, the shape of the receiving piece 60 in the thickness direction will be described. FIG. 8B is a bottom view of the receiving piece 60 in the E-type retaining ring insertion tool 200 according to the second embodiment. As shown in FIG. 8B, the receiving piece 60 has a shape in which a plate having a thickness B is bent at an angle D.

  By adopting the configuration as described above, the E-type retaining ring insertion tool 200 according to the second embodiment has a narrow width in the length direction of the shaft into which the E-shaped retaining ring is inserted. An E-shaped retaining ring insertion tool suitable for inserting E-shaped retaining rings of a plurality of sizes can be provided in a narrow place in the radial direction.

Embodiment 3
Next, a third embodiment according to the present invention will be described. The E-type retaining ring insertion tool 300 differs from the E-type retaining ring insertion tool 200 according to the second embodiment only in the structure of the fulcrum 13. Therefore, the description of the part which overlaps with Embodiment 2 is abbreviate | omitted.

  FIG. 10 is a left side view and a bottom view of the E-type retaining ring insertion tool 300 according to the third embodiment. First, the force applied to each part in the third embodiment will be described with reference to FIG. FIG. 10A is a left side view of the E-type retaining ring insertion tool 300. FIG. The E-shaped retaining ring insertion tool 300 is about to insert the E-shaped retaining ring 110 into the shaft 120. When the E-shaped retaining ring 110 is inserted into the shaft 120, the holding piece 50 receives a force P1 that is a reaction force of the insertion force from the E-shaped retaining ring. The force P <b> 1 is transmitted to the rod-shaped member 12, and generates a moment M <b> 1 in the rotational direction around the position away from the fulcrum 13 at the end of the surface where the rod-shaped member 11 and the rod-shaped member 12 overlap. At the same time, the receiving piece 60 receives a force P <b> 2 that is a reaction force of the insertion force from the shaft 120. The force P <b> 2 is transmitted to the rod-shaped member 11, and generates a moment M <b> 2 in the rotation direction around the position away from the fulcrum 13 at the end of the surface where the rod-shaped member 11 and the rod-shaped member 12 overlap.

  Thus, when the E-shaped retaining ring insertion tool 300 inserts the E-shaped retaining ring 110 into the shaft 120, the E-shaped retaining ring insertion tool 300 is subjected to the moment M1 and the moment M2 that are torsional forces. Become.

  Next, the details of the fulcrum 13 of the E-type retaining ring insertion tool 300 will be described with reference to FIG. FIG. 10B is a bottom view of the E-shaped retaining ring insertion tool 300. In order to prevent rattling and loosening at the fulcrum 13 of the E-type retaining ring insertion tool 300 due to repeated application of the moment M1 and the moment M2 as illustrated in FIG. The tool 300 has the following configuration. That is, the fulcrum 13 includes a bolt 131, a washer 132, a washer 133, a spring 134, and a nut 135.

  The bolt 131 passes through the washer 132, the rod-shaped member 11, the rod-shaped member 12, the washer 133, and the spring 134, and is screwed into the nut 135. The washer 132 is inserted into the bolt 131 and is interposed between the head of the bolt 131 and the rod-shaped member 11. The washer 133 is inserted into the bolt 131 and interposed between the rod-shaped member 12 and the spring 134. The spring 134 is inserted through the bolt 131 and is interposed between the washer 133 and the nut 135. The spring 134 is a disc spring, and urges the washer 133 and the nut 135 in a direction away from each other in the fulcrum axis direction of the fulcrum 13. The nut 135 is screwed with the bolt 131. Each component is assembled to the fulcrum 13 by the spring 134 with no backlash.

  Due to the moment M1 and the moment M2 that are generated when the E-shaped retaining ring insertion tool 300 inserts the E-shaped retaining ring 110 into the shaft 120, the rod-shaped member 11 and the rod-shaped member 12 are exerted in a direction away from each other. By adopting the structure of the third embodiment, it is possible to suppress the rattling or loosening of the fulcrum 13.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, the angle D in the second embodiment is not limited to 90 degrees, and the centerline of the shaft on which the rod-shaped member 11 and the rod-shaped member 12 are pivotally supported and the centerline of the E-shaped retaining ring held by the holding piece 50 A desired angle that is not parallel can be selected. For example, it is preferable to select an arbitrary angle between 90 degrees and 180 degrees as the angle D.

DESCRIPTION OF SYMBOLS 10 Main body 11, 12 Bar-shaped member 13 Support point 14, 17 Locking part 20, 21 Holding part 30, 50 Holding piece 34, 36, 54, 56 Holding part 37, 57 Gap 40, 60 Receiving piece 45, 65 Contact part 100 200 E-type retaining ring insertion tool 110 E-type retaining ring 120 shaft

Claims (5)

A first rod-shaped member having a first gripping portion at one end and a first locking portion at the other end;
A second rod-like member having a second gripping part at one end and a second locking part at the other end;
The first rod-shaped member and the second rod-shaped member are rotatably supported at their respective intermediate portions,
A plate-like holding piece that is exchangeably locked to the first locking portion and holds the E-shaped retaining ring by the first clamping portion and the second clamping portion;
A plate-like receiving piece that is exchangeably locked to the second locking portion and that contacts the E-shaped retaining ring at a single point on a surface perpendicular to the shaft when the E-shaped retaining ring is inserted into the shaft; Have
A pliers-type E-shaped stopper in which the holding piece and the receiving piece sandwich the shaft and the E-shaped retaining ring is inserted into the shaft by bringing the first gripping portion and the second gripping portion closer to each other. A wheel insertion tool,
The holding piece and the receiving piece are a plurality of types of replaceable members having different shapes depending on the size of the E-shaped retaining ring to be inserted.
E-type retaining ring insertion tool. When the E-shaped retaining ring is inserted into the shaft,
In a plane perpendicular to the central axis of the axis,
The straight line connecting the contact portion where the receiving piece is in contact with the shaft and the central axis of the shaft is
Pass through the gap between the first clamping part and the second clamping part in the holding piece,
The E-type retaining ring insertion tool according to claim 1. A V-shaped or U-shaped groove is formed in each of the first clamping part and the second clamping part,
The groove holds an outer ridge line along the surface of the E-shaped retaining ring and an outer ridge line along the back surface, respectively.
The E-type retaining ring insertion tool according to claim 1 or 2. The contact portion that contacts the shaft of the receiving piece is formed in a columnar shape,
The E-type retaining ring insertion tool according to any one of claims 1 to 3. The holding piece is bent between a portion locked to the first locking portion, the first clamping portion, and the second clamping portion,
The receiving piece is bent between a portion locked by the second locking portion and a contact portion where the receiving piece contacts the shaft,
The E-type retaining ring insertion tool according to any one of claims 1 to 4.

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