JP2019018258A - Hub bearing press-fitting tool - Google Patents

Abstract

To prevent damage to a bearing.SOLUTION: In a hub bearing press-fitting tool 10A, a bearing inner race inner peripheral surface 301 is supported by a body part support outer peripheral surface 21 of a body part 20, a body part outermost peripheral surface 22 of the body part 20 is guided by a guide inner peripheral surface 51 of an outer guide part 50 fitted to a wheel hub 200, a spindle outer peripheral surface screw groove 102 of a spindle 100 and a body part inner peripheral surface screw groove 24 are engaged with each other, a bearing inner race 300 is guided between a spindle outer peripheral surface 101 and a wheel hub inner peripheral surface 201, and the bearing inner race 300 is inserted therebetween without occurrence of unnecessary contact. A body part outer peripheral surface screw groove 26 and a nut part inner peripheral surface screw groove 41 of a nut part 40 are engaged with each other, a pressing force is applied to a pressing rod 32 of a press-fitting part 30A, the bearing inner race 300 is press-fitted without addition of an impact by a pressing part 31 to which the pressing force is transmitted by the pressing rod 32, and thereby damage to a bearing can be prevented.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a hub bearing press-fitting tool.

  Tool for press-fitting a bearing inner race between a spindle and a wheel hub attached to the spindle after removing a bearing inner race such as an outer bearing inner race in maintenance around a hub such as a brake hub of a vehicle Jigs) have been proposed. For example, Patent Document 1 has a substantially cylindrical shape into which a spindle is inserted, and a barrel portion whose outer diameter is in contact with the outer edge portion of the oil seal, and a concentric shape at the other end of the barrel portion. And a jig body having a bearing portion that supports the spindle in a state of passing through the spindle, and an outer peripheral surface of the spindle in a state in which one end of the body portion is brought into contact with the oil seal and the spindle is passed through the bearing portion. There is disclosed a bearing exchange jig composed of a tightening nut that allows an oil seal to be press-fitted between a spindle and a wheel hub via a jig main body by being screwed into a thread groove formed in the above. Patent Document 1 discloses that the bearing exchange jig can also be used when a bearing is press-fitted between a spindle and a wheel hub.

Utility Model Registration No. 3170049

  By the way, at the maintenance site, there is a case where the axis of the wheel hub attached to the spindle is not necessarily aligned with the axis of the spindle. When the bearing inner race is press-fitted with the wheel hub shaft tilted with respect to the spindle shaft, unnecessary contact between the bearing components such as contact between the outer ring transfer surface and the roller angle occurs. A bearing may be damaged, such as a scratch on the transfer surface.

  Accordingly, an object of the present invention is to provide a hub bearing press-fitting tool that can prevent the bearing from being damaged.

  The present invention relates to a hub bearing press-fitting tool for press-fitting a bearing inner race between a spindle and a wheel hub attached to the spindle, the wheel hub inner periphery of the wheel hub surrounding the spindle outer peripheral surface of the spindle. A guide inner peripheral surface corresponding to the surface, an outer guide portion attached to a side where the wheel inner bearing race of the wheel hub is press-fitted, and a bearing inner race inner periphery of the bearing inner race on the side facing the spindle and the wheel hub. The outer peripheral surface of the main body that supports the surface so as to be slidable in the axial direction of the spindle, the outermost peripheral surface of the main body that slides with respect to the inner peripheral surface of the guide of the outer guide portion, and the spindle of the spindle outer peripheral surface of the spindle A main body portion inner peripheral surface including a main body inner peripheral surface screw groove meshing with the outer peripheral surface screw groove, and a main body portion supporting outer periphery The outer peripheral surface of the main body is guided by the guide inner peripheral surface of the outer guide portion while supporting the inner peripheral surface of the bearing inner race by the spindle, and the spindle outer peripheral surface thread groove and the main body inner peripheral surface thread groove engage with each other. It is located between the main body that guides the bearing inner race between the outer peripheral surface and the inner peripheral surface of the wheel hub, and the bearing inner race that supports the inner peripheral surface of the bearing inner race by the main body supporting outer peripheral surface and the main body. , A pressing portion that presses the bearing inner race, and a main body portion penetrating from the side of the main body portion facing the spindle and the wheel hub to the opposite side of the main body portion facing the spindle and the wheel hub. A pressing rod that is inserted into the hole and transmits the pressing force to the pressing portion, and the spindle outer peripheral surface thread groove of the spindle and the main body inner periphery of the main body With the screw groove engaged, a pressing force is applied to the pressing rod from the side opposite to the side of the main unit facing the spindle and wheel hub to the side of the main unit facing the spindle and wheel hub. Thus, the pressing portion to which the pressing force is transmitted by the pressing rod press-fits the bearing inner race between the spindle outer peripheral surface and the wheel hub inner peripheral surface, and the side of the main body portion facing the spindle and the wheel hub. Is located on the opposite side and has a nut part inner peripheral surface thread groove that meshes with the main body part outer peripheral surface thread groove of the main body part, and the main body part outer peripheral surface thread groove and the nut part inner peripheral surface thread groove engage with each other. A hub bearing having a nut portion that applies a pressing force to the rod from the side opposite to the side facing the spindle and wheel hub of the main body to the side facing the spindle and wheel hub of the main body This is a press-fitting tool.

  According to this configuration, in the hub bearing press-fitting tool for press-fitting the bearing inner race between the spindle and the wheel hub attached to the spindle, the inner peripheral surface of the bearing inner race is supported by the outer peripheral support surface of the main body portion. While being supported, the outermost peripheral surface of the main body is guided by the guide inner peripheral surface of the outer guide portion attached to the wheel hub, and the spindle outer peripheral surface thread groove of the spindle and the main body inner peripheral surface thread groove of the main body portion are formed. By engaging, a bearing inner race is induced between the spindle outer peripheral surface and the wheel hub inner peripheral surface. Thereby, even if the wheel hub axis is slightly deviated from the spindle axis, the bearing inner race is inserted without causing unnecessary contact between the bearing components. In addition, when the spindle outer peripheral surface thread groove and the main body inner peripheral surface thread groove are engaged, the main body outer peripheral surface thread groove of the main body portion and the nut inner peripheral surface thread groove of the nut portion are engaged with each other. A pressing force is applied to the pressing rod, and the bearing inner race is press-fitted between the spindle outer peripheral surface and the wheel hub inner peripheral surface by the pressing portion of the press-fitting portion to which the pressing force is transmitted by the pressing rod. As a result, the bearing inner race is press-fitted without hitting with a hammer or the like. Therefore, the bearing can be prevented from being damaged when the bearing inner race is press-fitted between the spindle and the wheel hub attached to the spindle.

  In this case, the pressing portion of the press-fitting portion and the pressing rod are integrated, and the end of the pressing rod on the opposite side of the main body portion from the side facing the spindle and the wheel hub passes through the main body portion of the main body portion. It is preferable to include a retaining portion that prevents the hole from coming off.

  According to this configuration, the pressing portion of the press-fit portion and the pressing rod are integrated, and the pressing rod is secured by the retaining portion at the end of the pressing rod on the side opposite to the side of the main body portion facing the spindle and the wheel hub. It is prevented that the main body part comes out of the main body part through hole. Thereby, a press rod is always integrated with a main-body part, and workability | operativity can be improved.

  In addition, when the pressing force is not applied to the pressing rod by the nut from the side opposite to the side facing the spindle and wheel hub of the body, the side facing the spindle and wheel hub of the body is pressed. It is preferable to further include a return spring portion that applies a spring force so that the portion returns to the side opposite to the side of the main body portion facing the spindle and the wheel hub.

  According to this configuration, when the pressing force is not applied to the pressing rod by the nut portion by the return spring portion, the pressing portion returns to the side opposite to the side facing the spindle and the wheel hub of the main body portion. Spring force is applied. Thus, after press-fitting one bearing inner race, the inner peripheral surface of the bearing inner race of the bearing inner race is supported by the main body supporting outer peripheral surface of the main body portion removed from the spindle in order to press-fit another bearing inner race. And the workability can be improved.

  According to the hub bearing press-fitting tool of the present invention, it is possible to prevent the bearing from being damaged.

It is a perspective view which shows the outer guide part of the hub bearing press-fit tool which concerns on 1st Embodiment, a main-body part, a press-fit part, and a nut part. (A) is a side view of the main body of FIG. 1, (B) is a rear view of (A), and (C) is a cross-sectional view taken along line α of (B). It is a perspective view which shows the state by which the press injection part of FIG. 1 was decomposed | disassembled into the press part and the press rod. (A) is a front view of the press-fitting part of FIG. 1, (B) is a side view of (A), and (C) is a cross-sectional view taken along line β of (B). (A) is a side view of the nut part of FIG. 1, (B) is a rear view of (A), (C) is sectional drawing by the gamma ray of (B). (A) is a side view of the outer guide part of FIG. 1, (B) is a rear view of (A), and (C) is a sectional view taken along line δ of (B). It is a longitudinal cross-sectional view which shows the state in which the outer guide part was attached to the side by which the bearing inner race of the wheel hub attached to the spindle is press-fitted. FIG. 8 is a longitudinal sectional view showing a state where the press-fitting part is assembled to the main body part in the state of FIG. 7. FIG. 9 is a longitudinal sectional view showing a state in which the bearing inner race inner peripheral surface of the bearing inner race is supported on the main body supporting outer peripheral surface of the main body portion assembled with the press-fitting portion in the state of FIG. 8. In the state of FIG. 9, the inner peripheral surface of the bearing inner race is supported by the outer peripheral surface supporting the main body, and the outermost peripheral surface of the main body is guided by the inner peripheral surface of the guide. FIG. 5 is a longitudinal sectional view showing a state in which a bearing inner race is induced between the outer peripheral surface of the spindle and the inner peripheral surface of the wheel hub by engaging with each other. FIG. 11 is a longitudinal sectional view showing a state in which a bearing inner race is induced between the spindle outer peripheral surface and the wheel hub inner peripheral surface and the bearing inner race is press-fitted to about half in the state of FIG. 10. In the state of FIG. 11, it is a longitudinal cross-sectional view which shows the state by which the nut part was assembled | attached to the main-body part. In the state of FIG. 12, a longitudinal sectional view showing a state in which the pressing force is applied to the pressing rod and the bearing inner race is completely press-fitted by the engagement of the outer peripheral surface thread groove of the main body portion and the inner peripheral surface thread groove of the nut portion. It is. It is a longitudinal cross-sectional view which shows the main-body part and press-fit part which concern on 2nd Embodiment. It is a longitudinal cross-sectional view which shows the main-body part and press-fit part which concern on 3rd Embodiment. It is a longitudinal cross-sectional view which shows the main-body part and press-fit part which concern on 4th Embodiment.

  Hereinafter, a hub bearing press-fitting tool according to the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the hub bearing press-fitting tool 10A according to the first embodiment of the present invention includes a main body 20, a press-fitting part 30A, a nut part 40, and an outer guide part 50. The hub bearing press-fitting tool 10A of the present embodiment is a tool for press-fitting a bearing inner race such as an outer bearing inner race between a spindle and a wheel hub attached to the spindle. The main body part 20, the press-fitting part 30A, the nut part 40, and the outer guide part 50 of the hub bearing press-fitting tool 10A are made of, for example, tool steel.

  As shown in FIG. 1, FIG. 2 (A), FIG. 2 (B), and FIG. And have shapes connected to each other. The body 20 slides the inner surface of the bearing inner race in the axial direction of the spindle on the side facing the spindle and the wheel hub (the left side in FIGS. 1, 2A, and 2C). It has the main-body-part support outer peripheral surface 21 supported so that it can move. The main body support outer peripheral surface 21 is a cylindrical outer peripheral surface having an outer diameter corresponding to the inner diameter of the inner peripheral surface of the bearing inner race of the bearing inner race.

  The main body portion 20 is adjacent to the opposite side of the main body portion supporting outer peripheral surface 21 to the side facing the spindle and the wheel hub (the right side in FIGS. 1, 2A, and 2C), and the outer guide It has a main body outermost peripheral surface 22 that slides against the guide inner peripheral surface 51 of the portion 50. The main body outermost peripheral surface 22 is a cylindrical outer peripheral surface having an outer diameter corresponding to the inner diameter of the guide inner peripheral surface 51 of the outer guide portion 50, and is a portion having the largest outer diameter in the main body portion 20. .

  The main body 20 has a main body inner peripheral surface 23 including a main body inner peripheral surface thread groove 24 that meshes with a spindle outer peripheral surface thread groove on the spindle outer peripheral surface of the spindle inside a cylindrical shape including the main body support outer peripheral surface 21. The main body inner peripheral surface 23 is a cylindrical inner peripheral surface having an inner diameter corresponding to the outer diameter of the spindle outer peripheral surface of the spindle.

  The main body 20 has a main body through hole 25 that penetrates the main body 20 from the side of the main body 20 facing the spindle and the wheel hub to the side opposite to the side of the main body 20 facing the spindle and the wheel hub. Have The main body portion through-hole portion 25 is a through hole penetrating a pair of cylindrical bottom surfaces including the main body outermost peripheral surface 22 at a position on the outer peripheral side of the main body portion supporting outer peripheral surface 21. The main body portion 20 has three main body portion through-hole portions 25. The three main body portion through-hole portions 25 are provided at positions that form 0 °, 120 °, and 240 °, respectively, with respect to central axes that pass through the centers of a pair of cylindrical bottom surfaces including the outermost peripheral surface 22 of the main body portion. Yes.

  The main body 20 has a main body outer peripheral surface thread groove 26 adjacent to the opposite side of the main body outermost peripheral surface 22 to the side facing the spindle and the wheel hub. The main body outer peripheral surface thread groove 26 is provided on a cylindrical outer peripheral surface having a smaller diameter than the cylindrical shape including the main body outermost peripheral surface 22. In the example of FIGS. 1, 2A, 2B, and 2C, the main body outer peripheral surface thread groove 26 has a cylindrical shape with a smaller diameter than the cylindrical shape including the main body supporting outer peripheral surface 21. Is provided on the outer peripheral surface of the.

  The main body 20 is supported on the inner peripheral surface of the bearing inner race by the support outer peripheral surface 21 of the main body, and is guided by the outermost peripheral surface 22 of the main body by the guide inner peripheral surface 51 of the outer guide portion 50. The bearing inner race is guided between the spindle outer peripheral surface and the wheel hub inner peripheral surface by meshing with the main body inner peripheral surface thread groove 24.

  As shown in FIGS. 1, 3, 4 (A), 4 (B), and 4 (C), the press-fit portion 30 A is supported on the inner peripheral surface of the bearing inner race by the main body support outer peripheral surface 21. It has a pressing part 31 which is located between the bearing inner race and the main body part 20 and presses the bearing inner race. The pressing portion 31 has a disk shape and is a surface on the side facing the disk-shaped spindle and the wheel hub (left side in FIGS. 1, 3, 4B, and 4C). The pressing surface 33 and the main body part insertion hole part 34 which penetrates the center of the said disk shape are included. The main body portion insertion hole 34 is a through hole having an inner diameter corresponding to the outer diameter of the columnar shape including the main body portion supporting outer peripheral surface 21.

  The press-fitting portion 30A is located on the opposite side from the side of the main body portion 20 facing the spindle and the wheel hub from the side facing the spindle and wheel hub (FIG. 1, FIG. 3, FIG. 4B) and FIG. 4 (the right side in FIG. 4C) is inserted into the body part through-hole part 25 that penetrates the body part 20, and has a pressing rod 32 that transmits the pressing force to the pressing part 31. The press-fit portion 30 </ b> A has three pressing rods 32. The three pressing rods are attached at positions corresponding to the three main body portion through-hole portions 25 in a portion excluding the disk-shaped main body portion insertion hole portion 34 of the pressing portion 31.

  In the example of FIG. 3, the pressing portion 31 and the pressing rod 32 are separated, but in use, the pressing portion 31 and the pressing rod 32 face the pressing portion 31 at least against the spindle and the wheel hub by the pressing rod 32. It is integrated so as not to separate when a pressing force is applied to the side.

  The press-fit portion 30A has a side facing the spindle and the wheel hub of the main body portion 20 with the pressing rod 32 in a state where the spindle outer peripheral surface screw groove of the spindle and the main body portion inner peripheral surface screw groove 24 are engaged with each other. When a pressing force is applied from the opposite side to the side of the main body portion 20 facing the spindle and the wheel hub, the pressing portion 31 to which the pressing force is transmitted by the pressing rod 32 becomes the spindle outer peripheral surface and the wheel hub inner peripheral surface. Press-fit the bearing inner race between the two.

  As shown in FIG. 1, FIG. 5 (A), FIG. 5 (B) and FIG. 5 (C), the nut portion 40 is opposite to the side of the main body portion 20 facing the spindle and the wheel hub (FIG. 1). And a nut portion inner peripheral surface thread groove 41 that meshes with the main body portion outer peripheral surface thread groove 26 of the main body portion 20. The nut inner peripheral surface thread groove 41 is provided on a cylindrical inner peripheral surface having an inner diameter corresponding to a cylindrical outer diameter including the outer peripheral surface provided with the main body outer peripheral surface thread groove 26. The nut portion 40 presses the end portions of the three pressing rods 32 to the side of the main body portion 20 facing the spindle and the wheel hub (the left side in FIGS. 1, 5A, and 5C). A rod pressing surface 42 is provided.

  When the nut portion 40 is engaged with the outer peripheral surface thread groove 26 of the main body portion and the inner peripheral surface thread groove 41 of the main body portion, the main body portion from the side opposite to the side of the main body portion 20 facing the spindle and the wheel hub is engaged with the pressing rod 32. A pressing force is applied to the side of the portion 20 facing the spindle and the wheel hub.

  As shown in FIG. 1, FIG. 6 (A), FIG. 6 (B) and FIG. 6 (C), the outer guide portion 50 has a cylindrical shape and is inside the wheel hub of the wheel hub that surrounds the spindle outer peripheral surface of the spindle. A guide inner peripheral surface 51 corresponding to the peripheral surface is provided. The outer guide part 50 is attached to the side (the left side of FIG. 1, FIG. 6 (A) and FIG. 6 (C)) where the bearing inner race of the wheel hub is press-fitted. In the example of FIGS. 1, 6B and 6C, the outer guide portion 50 has six bolt hole portions 52 penetrating from one end surface to the other end surface of the cylindrical wall surface. The positions of the six bolt hole portions 52 correspond to, for example, the positions of hub cap mounting hole portions for screwing bolts for attaching the hub caps of the wheel hub.

  Hereinafter, a method for press-fitting a bearing inner race using the hub bearing press-fitting tool 10A of the present embodiment will be described. As shown in FIG. 7, a wheel hub 200 is attached to the spindle 100 during maintenance around a hub such as a brake hub of a vehicle. The spindle 100 has a spindle outer peripheral surface 101, and the wheel hub 200 has a wheel hub inner peripheral surface 201 that surrounds the spindle outer peripheral surface 101. The spindle outer peripheral surface 101 has a spindle outer peripheral surface thread groove 102 at the tip (knuckle) of the spindle 100. The wheel hub 200 has a hub cap attachment hole 202 for screwing a bolt for attaching the hub cap.

  First, the outer guide portion 50 of the hub bearing press-fitting tool 10A is attached to the side on which the bearing inner race of the wheel hub 200 is press-fitted (the right side in FIGS. 7 to 13). In this embodiment, the hub cap mounting hole 202 for screwing a bolt for attaching the hub cap is used, and the bolt 53 inserted through the bolt hole 52 is screwed into the hub cap mounting hole 202. The outer guide portion 50 is attached to the wheel hub 200. Since the guide inner peripheral surface 51 of the outer guide portion 50 corresponds to the wheel hub inner peripheral surface 201 of the wheel hub 200 and the guide inner peripheral surface 51 extends along the wheel hub inner peripheral surface 201, The guide inner peripheral surface 51 continues substantially smoothly.

  The guide inner peripheral surface 51 does not necessarily have to be continuous with the wheel hub inner peripheral surface 201. The guide inner peripheral surface 51 is a position or direction corresponding to the position or direction of the wheel hub inner peripheral surface 201. Since the inner peripheral surface 51 guides the outermost peripheral surface 22 of the main body, a bearing inner race is inserted between the spindle outer peripheral surface 101 and the wheel hub inner peripheral surface 201 without causing unnecessary contact between bearing components. It only has to be done.

  Further, the bolts 53 do not need to be screwed into all of the six bolt hole portions 52 and the hub cap attachment hole portion 202. For example, the bolts 53 are inserted into the two bolt hole portions 52 and the hub cap attachment hole portion 202. The outer guide part 50 may be attached to the wheel hub 200 by being screwed.

  As shown in FIG. 8, a bearing inner race 300 such as an outer bearing inner race, and a hub bearing press-fitting tool 10A in which a press-fit portion 30A is assembled to the main body 20 are prepared. The bearing inner race 300 has a substantially cylindrical shape. The bearing inner race 300 has a bearing inner race inner peripheral surface 301 on the cylindrical inner peripheral surface side and a roller 302 on the cylindrical outer peripheral surface side. The bearing inner race 300 is press-fitted between the spindle outer peripheral surface 101 and the wheel hub inner peripheral surface 201.

  In the hub bearing press-fitting tool 10 </ b> A, a cylindrical portion including the main body support outer peripheral surface 21 of the main body 20 is inserted into the main body insertion hole 34 of the press-fitting part 30 </ b> A, and the main body through hole 25 of the main body 20. The press-fit portion 30A is assembled to the main body portion 20 by inserting the pressing rod 32 of the press-fit portion 30A. The main body portion 20 and the press-fit portion 30A are brought close to each other so that the range in which the main body portion support outer peripheral surface 21 is exposed from the press-fit portion 30A is the largest.

  As shown in FIG. 9, the bearing inner race inner peripheral surface 301 of the bearing inner race 300 is supported on the main body supporting outer peripheral surface 21 of the main body 20 to which the press-fit portion 30 </ b> A is assembled.

  As shown in FIG. 10, the outermost peripheral surface 22 of the main body is guided by the inner peripheral surface 51 of the guide 50 while the inner peripheral surface 301 of the bearing inner race is supported by the outer peripheral surface 21 of the main body. The outer ring transfer surface of the wheel hub inner peripheral surface 201 and the corner of the roller 302 are prevented from contacting each other. The main body 20 is rotated manually or the like, and the spindle outer peripheral surface thread groove 102 and the main body inner peripheral surface thread groove 24 mesh with each other, whereby a bearing inner race is provided between the spindle outer peripheral surface 101 and the wheel hub inner peripheral surface 201. 300 is induced. As shown in FIG. 11, when the main body inner peripheral surface thread groove 24 is completely screwed into the spindle outer peripheral surface thread groove 102, the bearing inner race 300 is press-fitted to about half.

  As shown in FIG. 12, the nut portion 40 is assembled to the main body portion 20. The assembly of the nut part 40 to the main body part 20 is performed by engaging the main body part outer peripheral surface thread groove 26 and the nut part inner peripheral surface thread groove 41 with each other. As shown in FIG. 13, a pressing force is applied to the pressing rod 32 by the engagement of the main body portion outer peripheral surface thread groove 26 and the nut portion inner peripheral surface thread groove 41.

  In a state where the spindle outer peripheral surface thread groove 102 of the spindle 100 and the main body section inner peripheral surface thread groove 24 mesh with each other, the rod pressing surface 42 of the nut section 40 causes the pressing rod 32 to contact the spindle 100 and the wheel of the main body section 20. A pressing force is applied from the side opposite to the side facing the hub 200 (the right side in FIG. 13) to the side facing the spindle 100 and the wheel hub 200 of the main body 20 (the left side in FIG. 13). The bearing inner race 300 is press-fitted between the spindle outer peripheral surface 101 and the wheel hub inner peripheral surface 201 by the pressing surface 33 of the pressing portion 31 to which the pressing force is transmitted by the rod 32. After the bearing inner race 300 is completely press-fitted, the hub bearing press-fitting tool 10 </ b> A is removed from the spindle 100 by manually rotating the main body 20 in the direction opposite to that during press-fitting. Further, the outer guide portion 50 is also removed from the wheel hub 200.

  According to the present embodiment, in the hub bearing press-fitting tool 10 </ b> A for press-fitting the bearing inner race 300 between the spindle 100 and the wheel hub 200 attached to the spindle 100, the main body support outer peripheral surface 21 of the main body 20. The inner peripheral surface 301 of the main body 20 of the main body 20 is guided by the inner peripheral surface 51 of the outer guide 50 attached to the wheel hub 200 while the inner peripheral surface 301 of the bearing inner race is supported. The bearing inner race 300 is guided between the spindle outer peripheral surface 101 and the wheel hub inner peripheral surface 201 by meshing the surface screw groove 102 with the main body inner peripheral surface thread groove 24 of the main body 20. Thereby, even if the axis of the wheel hub 200 is slightly deviated from the axis of the spindle 100, the bearing inner race 300 is inserted without causing unnecessary contact between the bearing components.

  That is, even if the shaft of the wheel hub 200 is slightly deviated from the shaft of the spindle 100 by the steps of FIGS. 7 to 10 described above, the shaft of the spindle 100 and the shaft of the wheel hub 200 are driven by the hub bearing press-fitting tool 10A. The bearing inner race 300 is inserted between the spindle 100 and the wheel hub 200 in a state where the spindle 100 and the wheel hub 200 are aligned.

  Further, the main body part outer peripheral surface thread groove 26 and the nut part inner peripheral surface thread groove 41 of the nut part 40 are engaged with each other while the spindle outer peripheral surface thread groove 102 and the main body part inner peripheral surface thread groove 24 are engaged with each other. As a result, a pressing force is applied to the pressing rod 32 of the press-fitting portion 30A, and the pressing portion 31 of the press-fitting portion 30A to which the pressing force is transmitted by the pressing rod 32 causes the spindle outer peripheral surface 101 and the wheel hub inner peripheral surface 201 to be connected. The bearing inner race 300 is press-fitted into. Thereby, the bearing inner race 300 is press-fitted without hitting with a hammer or the like.

  That is, the bearing inner race 300 is press-fitted without hitting with a hammer or the like by the above-described steps of FIGS. 11 to 13, so that an impact is applied to the spindle outer peripheral surface 101, the wheel hub inner peripheral surface 201 and the bearing inner race 300. Don't join. Therefore, it is possible to prevent the bearing from being damaged when the bearing inner race 300 is press-fitted between the spindle 100 and the wheel hub 200 attached to the spindle 100.

  Hereinafter, a second embodiment of the present invention will be described. As shown in FIG. 14, in the hub bearing press-fitting tool 10B of the present embodiment, the pressing part 31 and the pressing rod 32 of the press-fitting part 30B are integrated by welding or the like so as not to be separated from each other. Further, the end of the pressing rod 32 on the side opposite to the side facing the spindle 100 and the wheel hub 200 of the main body 20 (the right side in FIG. 14) is the pressing rod 32 being the main body through hole 25 of the main body 20. A pin 35 is included as a retaining portion that prevents the member from coming off.

  According to the present embodiment, the pressing portion 31 and the pressing rod 32 of the press-fitting portion 30B are integrated, and the end portion of the pressing rod 32 on the opposite side of the main body portion 20 from the side facing the spindle 100 and the wheel hub 200. The pin 35 serving as a retaining portion prevents the pressing rod 32 from coming out of the body portion through-hole portion 25 of the body portion 20. As a result, the pressing rod 32 is always integrated with the main body 20, work delays due to the loss of the main body 20 and the press-fit portion 30 </ b> B can be prevented, and workability can be improved.

  Hereinafter, a third embodiment of the present invention will be described. As shown in FIG. 15, in the hub bearing press-fitting tool 10C of the present embodiment, the press part 31 and the press rod 32 of the press-fit part 30C are integrated so as not to be separated from each other, as in the second embodiment. Yes. Further, the end of the pressing rod 32 on the side opposite to the side facing the spindle 100 and the wheel hub 200 of the main body 20 (the right side in FIG. 15), the pressing rod 32 is the main body through hole 25 of the main body 20. An E-type retaining ring 36 defined by Japanese Industrial Standards JISB2804 is included as a retaining portion that prevents it from coming off. Also in this embodiment, there exists an effect similar to the said 2nd Embodiment.

  The fourth embodiment of the present invention will be described below. As shown in FIG. 16, in the hub bearing press-fitting tool 10D of the present embodiment, in the press-fit portion 30D, the nut portion 40 opposes the pressing rod 32 to the side facing the spindle 100 and the wheel hub 200 of the main body portion 20. When the pressing force is not applied from the side (the right side in FIG. 16) to the side (the left side in FIG. 16) facing the spindle 100 and the wheel hub 200 of the main body unit 20, the pressing unit 31 is the spindle of the main body unit 20. A compression spring 37 is provided as a return spring portion that applies a spring force so as to return to a side opposite to the side facing 100 and the wheel hub 200.

  The compression spring 37 includes an E-type retaining ring 36 at the end of the pressing rod 32 on the side opposite to the side facing the spindle 100 and the wheel hub 200 of the main body 20 and the outermost peripheral surface 22 of the main body 20. It arrange | positions so that the press rod 32 may be surrounded between the cylindrical-shaped bottom surfaces containing. The return spring portion includes a plate-like member attached to the end of the pressing rod 32 on the opposite side of the main body portion 20 from the side facing the spindle 100 and the wheel hub 200, and the outermost outer periphery of the main body portion of the main body portion 20. A compression spring disposed apart from the pressing rod 32 between the cylindrical bottom surface including the surface 22 may be used. Further, the return spring portion may be a tension spring disposed between the pressing portion 31 and a cylindrical bottom surface including the main body outermost peripheral surface 22 of the main body portion 20.

  According to this embodiment, when the pressing force is not applied to the pressing rod 32 by the nut portion 40 by the compression spring 37 as the return spring portion, the pressing portion 31 is connected to the spindle 100 and the wheel hub 200 of the main body portion 20. A spring force is applied so as to return to the side opposite to the side opposite to. Thus, after press-fitting one bearing inner race 300, the main body portion of the main body portion 20 in which the inner circumferential surface 301 of the bearing inner race 300 of the bearing inner race 300 is removed from the spindle 100 in order to press-fit another bearing inner race 300. It becomes easy to support on the support outer peripheral surface 21, and workability | operativity can be improved.

  As mentioned above, although embodiment of this invention was described, this invention is implemented in various forms, without being limited to the said embodiment.

  DESCRIPTION OF SYMBOLS 10A, 10B, 10C, 10D ... Hub bearing press-fit tool, 20 ... Main body, 21 ... Main body support outer peripheral surface, 22 ... Main body outermost peripheral surface, 23 ... Main body inner peripheral surface, 24 ... Main body inner peripheral screw groove , 25 ... body part through-hole part, 26 ... body part outer peripheral surface thread groove, 30A, 30B, 30C, 30D ... press-fitting part, 31 ... pressing part, 32 ... pressing rod, 33 ... pressing surface, 34 ... body part insertion hole 35, pin, 36, E-type retaining ring, 37, compression spring, 40, nut portion, 41, nut portion inner circumferential surface thread groove, 42, rod pressing surface, 50, outer guide portion, 51, guide inner circumferential surface 52 ... Bolt hole portion, 53 ... Bolt, 100 ... Spindle, 101 ... Spindle outer peripheral surface, 102 ... Spindle outer peripheral surface thread groove, 200 ... Wheel hub, 201 ... Wheel hub inner peripheral surface, 202 ... Hub cap mounting hole portion, 300 ... A ring inner race, 301 ... bearing inner race inner peripheral surface, 302 ... roller.

Claims (3)

A hub bearing press-fitting tool for press-fitting a bearing inner race between a spindle and a wheel hub attached to the spindle,
An outer guide portion having a guide inner peripheral surface corresponding to a wheel hub inner peripheral surface of the wheel hub surrounding a spindle outer peripheral surface of the spindle, and being attached to a side on which the bearing inner race of the wheel hub is press-fitted;
A main body supporting outer peripheral surface for supporting an inner peripheral surface of the bearing inner race of the bearing inner race so as to be slidable in an axial direction of the spindle on a side facing the spindle and the wheel hub; A main body outermost peripheral surface that slides relative to the guide inner peripheral surface, and a main body inner peripheral surface including a main body inner peripheral surface thread groove that meshes with a spindle outer peripheral surface thread groove of the spindle outer peripheral surface of the spindle. The outer peripheral surface of the main body is guided by the guide inner peripheral surface of the outer guide portion while the inner peripheral surface of the bearing inner race is supported by the outer peripheral surface of the main body support, and the thread groove on the spindle outer peripheral surface and the main body A main body for guiding the bearing inner race between the outer peripheral surface of the spindle and the inner peripheral surface of the wheel hub by meshing with the inner peripheral surface thread groove;
A pressing portion for pressing the bearing inner race, the spindle of the main body portion being positioned between the bearing inner race, the inner peripheral surface of the bearing inner race being supported by the main body supporting outer peripheral surface, and the main body portion; And from the side facing the wheel hub to the side opposite to the side facing the spindle and the wheel hub of the body portion, the body portion through-hole passing through the body portion is inserted into the pressing portion. A pressing rod for transmitting a pressing force, and the spindle outer peripheral surface thread groove of the spindle and the main body portion inner peripheral surface thread groove of the main body portion are engaged with the pressing rod. A pressing force is applied from the side opposite to the side facing the spindle and the wheel hub to the side facing the spindle and the wheel hub of the main body. The Rukoto, a press-fit portion press-fitting the said bearing inner race between said pressing portion is transmitted to the pressing force the spindle outer circumferential surface and a wheel hub inner peripheral surface by the pressing rod,
A nut portion inner peripheral surface thread groove that engages with a main body portion outer peripheral surface thread groove of the main body portion, which is located on a side opposite to a side facing the spindle and the wheel hub of the main body portion; By engaging the surface thread groove and the nut inner peripheral surface thread groove, the spindle of the main body portion and the spindle of the main body portion from the side opposite to the side of the main body portion facing the spindle and the wheel hub. A nut portion for applying a pressing force to the side facing the wheel hub;
Tool for press-fitting hub bearings. The pressing portion of the press-fitting portion and the pressing rod are integrated,
The end of the pressing rod on the side of the main body opposite to the side facing the spindle and the wheel hub is a retaining portion that prevents the pressing rod from coming out of the main body through hole of the main body. The hub bearing press-fitting tool according to claim 1, comprising:   The nut portion applies a pressing force to the pressing rod from a side opposite to the side of the main body portion facing the spindle and the wheel hub to a side of the main body portion facing the spindle and the wheel hub. 3. A return spring portion for applying a spring force so that the pressing portion returns to a side opposite to the side of the main body portion facing the spindle and the wheel hub when not pressed. Tool for press-fitting hub bearings as described in 1.

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