JP2008111500A - Mounting method of guide pin for disk brake device, and disk brake device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting method of a guide pin for a disk brake device which does not fracture a calking part during caulking and keeps the verticality precision of the guide pin high. <P>SOLUTION: The mounting method of the guide pin is employed for a floating type disk brake device. The guide pin 30 includes a sliding part 32 held in a sliding hole, a base end part 34 press-fitted into a through hole 26 formed in a support 22, and a flange part 36 arranged between the sliding part 32 and the base end part 34. A V-shaped cross-sectional recess 40 is formed at the tip of the base end part 34. The base end part 34 is press-fitted into the through hole 26 with a press fitting jig 60. A calking jig 62 having a protrusion 62a which has a tip acuter than the V-shaped with a rounded edge is pressed against the tip of the base end part 34 pressed through and protruded. A calking part 38 is formed by extending outwardly a wall part 40b constituting the recess 40. The method is characterized by clamping the support 22 forming the through hole 26 between the flange part 36 and the calking part 38. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a guide pin mounting method for a disc brake device and a disc brake device, and more particularly to a guide pin mounting method for a disc brake device which is suitable when caulking is used for mounting a guide pin, and a guide using the same. The present invention relates to a disc brake device to which a pin is attached.

  Conventionally, a guide pin used in a floating type disc brake device is generally fixed by screwing one end side of the guide pin into a screw hole formed in the support (for example, Patent Documents). 1). However, when fixing the guide pin by screwing, the hole provided on the support side needs to be tapped to form a female screw, and the guide pin screwed into the screw hole on the support side In addition, a die process or the like for forming a male screw to be screwed into the female screw is required. For this reason, the machining process and assembly process for manufacturing the disc brake device are complicated.

  In view of such a situation, a guide pin mounting method as shown in Patent Document 2 has been proposed. Patent Document 2 proposes a method of fixing a guide pin by caulking. That is, the guide pin is inserted into a through hole formed in the fixing member, and the end side protruding through is pressed and caulked. Specifically, as a configuration of the guide pin, it has a slide portion that plays a role as a guide pin, a base end portion that is fitted into the through hole, and a flange portion that separates the slide portion and the base end portion. A concave portion for obtaining a caulking structure is formed at the distal end of the base end portion.

Then, the base end portion of the guide pin having such a configuration is passed through the through hole, and a caulking jig is pressed against the tip end of the base end portion that protrudes through the through hole to form the crimp portion, and the flange portion The fixing member is sandwiched between the crimping portions. In Patent Document 2, the caulking jig has an annular cross section, a tip outer diameter portion is provided with a taper, and the tip portion as a whole has an acute shape. With such a configuration, the outer peripheral wall of the recess formed at the distal end of the proximal end can be pushed outward by the tapered portion formed on the distal outer diameter side of the crimping jig. Can be formed.
JP-A-56-116929 JP 2000-213570 A

  If the guide pin mounting method by caulking as disclosed in Patent Document 2 is used, the manufacturing process such as the machining process and the assembling process of the disk brake device can be simplified. It is possible to reduce the cost required.

  However, in the caulking method disclosed in Patent Document 2, as shown in FIGS. 7A and 7B, the tip 1a of the caulking jig 1 has an acute angle. The strength is low and the tip may be chipped. Moreover, since the outer peripheral wall 3a of the recessed part 3 formed in the base end part 2a of the guide pin 2 is pressed and spread by the tip part having an acute angle, a load is applied to the base end part of the outer peripheral wall 3a, and the caulking part There may be a situation where 4 breaks. Furthermore, the problem that the guide pin press-fitted by the pressing force at the time of caulking processing may occur.

  In the present invention, the above-described problem is solved, the guide pin mounting method of the disc brake device that can maintain the vertical accuracy of the guide pin with respect to the fixed portion even after the crimping process without breaking the crimp part during the crimping process, It is another object of the present invention to provide a disc brake device having a guide pin fixed by adopting this method.

  In order to achieve the above object, a guide pin mounting method of a disc brake device according to the present invention guides a slide of the caliper by being accommodated in a slide hole formed in a support or caliper in a floating disc brake device. A guide pin fixing method, wherein the guide pin includes a slide portion received in the slide hole, a base end portion fitted in a through hole formed at a fixed position, the slide portion, and the base end portion. And a flange portion that regulates the insertion depth of the base end portion, and a groove or a recess having a V-shaped cross section or a U-shaped cross section is provided at the tip of the base end portion. The base end portion is fitted vertically to the through hole while supporting the slide portion and the flange portion, and the through hole is projected while maintaining the support state by the fitting jig. The groove is pressed against the tip of the base end with a caulking jig having an obtuse taper angle than the V-shape or U-shape constituting the groove or recess, and the tip is rounded, and the groove Or the wall part which comprises a recessed part is spread outward, a crimping part is formed, and the fixing member in which the said through-hole was formed is clamped by the said flange part and the said crimping part, It is characterized by the above-mentioned.

  In the guide pin mounting method of the disc brake device having such a feature, the caulking jig is composed of a base portion having a flat surface facing the fixing member around the convex portion, and pressing the convex portion. After the groove or the concave portion is pushed outward by the contact, the pushed-up wall portion is crushed by the base portion to form a crimped portion.

  Further, in the guide pin fixing method of the disc brake device having the above characteristics, it is preferable to form a counterbore in an opening portion on the side where the base end portion protrudes in a through hole formed in the fixing member.

Further, in the guide pin mounting method of the disc brake device having the above characteristics, after the base end portion is fitted into the through hole, an annular member is inserted through the protruding portion of the base end portion, and then the A crimping jig may be pressed to sandwich the fixing member and the annular member between the flange portion and the crimping portion.
The disc brake device according to the present invention is characterized in that the guide pin is fixed by the method as described above.

  According to the guide pin mounting method of the disc brake device having the above-described characteristics, there is no possibility that the crimped portion is broken during the crimping process. Moreover, the vertical accuracy with respect to the fixing member of the guide pin after caulking can be improved. In addition, by elaborating on the shape of the crimping jig, the crimped portion can be formed in two steps, such as expanding and crushing, and these steps can be performed with a single press. As a result, it is possible to improve the fixability of the guide pin and improve the productivity of the disc brake device. Further, by performing a caulking process after providing a counterbore in the fixing member, it is possible to embed the caulking portion in the counterbore, and to improve the integrity of the fixing member and the guide pin. Furthermore, by interposing an annular member between the support and the caulking portion, it is possible to eliminate the possibility of scratching the support surface when removing the guide pin.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a disc brake device guide pin mounting method and a disc brake device according to the present invention will be described below in detail with reference to the drawings. In the embodiment described below, the expression “guide pin” is used as a general term for pins (for example, a guide pin and a lock pin) used for caliper sliding in order to simplify the description.

  First, a disc brake device for fixing a guide pin will be described with reference to FIG. 1A is a schematic plan view of the disc brake device, and FIG. 1B is a schematic front view of the disc brake device. The guide pin fixing method of the present invention can be applied to a disc brake device for a four-wheeled vehicle and a disc brake device for a two-wheeled vehicle. FIG. 1 shows a disc for a two-wheeled vehicle. A brake device will be described as an example.

  The disc brake device 10 shown in FIG. 1 is a floating disc brake device in which the caliper 12 moves along guide pins 30 provided on a support 22 described in detail below. The configuration of the disc brake device 10 according to the present embodiment can be broadly divided into a support 22 and a caliper 12.

  The support 22 is a member for holding the caliper 12 and fixing the entire disc brake device 10 to a vehicle frame (not shown) or a front fork in a two-wheeled vehicle. The support 22 in this embodiment is composed of a flat steel plate (for example, a metal plate) and is called a so-called sheet metal support. A screw hole 24 for fixing the support 22 to a vehicle frame or the like (not shown) and a caliper 12 (to be described in detail later) are slid in the support 22 in a direction of a rotating shaft (not shown) of the disk rotor 50 (direction indicated by an arrow A). A through hole 26 is provided for attaching a guide pin 30 for the purpose.

  The caliper 12 includes a cylinder part 14, a bridge part 16, a claw part 18, and a fastening part 20 as basic components. The cylinder portion 14 is a hydraulic mechanism composed of a cylinder showing only an outer diameter and a piston (not shown) provided therein, and by operating the piston, a brake pad (not shown) is pressed against the disc rotor 50 to thereby apply a braking force. Is generated. The claw portion 18 is a reaction portion that is disposed at a position facing the cylinder portion 14 so as to sandwich the disc rotor 50 and receives a force (action) applied to the disc rotor 50 by a piston of the cylinder portion 14. Accordingly, a brake pad (not shown) is provided on the side surface of the claw portion 18 on the disk rotor 50 side, similarly to the cylinder portion 14. The bridge portion 16 is an element for connecting the cylinder portion 14 and the claw portion 18 across the disk rotor 50. Further, the fastening portion 20 is an element for holding the caliper 12 on the support 22. When the piston (not shown) of the cylinder portion 14 exerts a pressing force on the disc rotor 50, the floating disc brake device 10 has the caliper 12 itself to adjust the distance from the claw portion 18 as a reaction portion. Slide in the direction of the axis of rotation of the disk rotor 50. This slide is made along a guide pin 30 that connects the support 22 and the caliper 12, and the fastening portion 20 is formed with a slide hole 20 a for accommodating the guide pin 30.

  The caliper 12 as described above is generally formed by casting, and various members can be selected as the member. However, lightweight and good workability aluminum or the like is desirable.

  The guide pin 30 according to this embodiment includes a slide part 32, a base end part 34, and a flange part 36 as basic components. The slide portion 32 is an element that guides the slide of the caliper 12 by being accommodated in a slide hole 20 a formed in the fastening portion 20 of the caliper 12. The base end 34 is an element that is press-fitted (or simply fitted (fitted)) into the through hole 26 formed in the support 22 and fixes the guide pin 30. The flange portion 36 is an element that is formed between the slide portion 32 and the base end portion 34 and regulates the insertion depth of the base end portion 34 with respect to the through hole 26 formed in the support 22. is there.

  The guide pin 30 of the present embodiment includes the caulking portion 38 formed by pressing and deforming the distal end of the base end portion 34 press-fitted into the through hole 26 formed in the support 22, and the flange portion 36. It is fixed by sandwiching 22.

  For this reason, the guide pin 30 before being fixed to the support 22 is provided with a groove 40 for forming a caulking portion 38 at the distal end of the base end portion 34. By making the said part into the groove | channel 40 instead of a simple recessed part, high workability can be acquired. The shape of the groove 40 is preferably V-shaped in cross section as shown in FIG. The length of the base end portion 34 is slightly longer than the thickness of the metal plate forming the support 22, and preferably the deepest of the grooves 40 among the tips of the base end portions 34 press-fitted into the support 22. It is good to make it the length of the grade which protrudes from the support 22 to the part 40a. With such a configuration, the guide pin 30 can be fixed by sandwiching the support 22 by the crimping portion 38 formed by processing the distal end of the base end portion 34 and the flange portion 36. In addition, the constituent material of the guide pin 30 may be any member that can be plastically deformed when the crimped portion 38 is formed, and may be, for example, boron steel or carbon steel that has been conventionally used.

  Hereinafter, a process for fixing the guide pin 30 configured as described above to the support 22 will be described. When the guide pin 30 is fixed, a press-fitting jig (inserting jig) 60 for press-fitting the base end part 34 into the through hole 26 formed in the support 22 and a base end part 34 protruding from the support 22 are provided. A caulking jig 62 for caulking the tip is used.

  The press-fitting jig 60 has a shape capable of wrapping or sandwiching the slide portion 32 and pressing the flange portion 36 as indicated by an imaginary line in FIG. It should be like a mold that was made. By using the press-fitting jig 60 having such a configuration, the base end portion 34 of the guide pin 30 is press-fitted into the through hole 26 formed in the support 22 so that the perpendicularity of the guide pin 30 with respect to the support 22 can be obtained with high accuracy. It becomes possible. For this reason, it becomes possible to press-fit the guide pin 30 vertically to the support 22. The caulking jig 62 has a block or flat base portion 62b with a flat pressing surface, and a convex portion 62a formed with a spherical tip, that is, with R (SR) at the tip. And is made up of. The convex part 62a enters the groove 40 formed in the base end part 34 of the guide pin 30 during the caulking process, and plays a role of creating a caulking process. For this reason, it is desirable that the roundness (R) provided on the convex portion 62a is large (gradual) to such an extent that the groove 40 of the base end portion 34 can be pushed and expanded.

  As a process of fixing the guide pin 30, first, the guide pin 30 is set on the press-fitting jig 60, and the flange portion 36 is pressed to press-fit the base end portion 34 into the through hole 26 of the support 22 (FIG. 2). (See (A)). Thereafter, the crimping jig 62 is pressed against the distal end of the base end portion 34 that is press-fitted and protrudes from the through hole 26. When the convex part 62a which is the front-end | tip part of the crimping jig 62 is pressed against the groove | channel 40 formed in the base end part 34, the wall part 40b which comprises the groove | channel 40 will go outside along the curved surface of the convex part 62a. It will be expanded. When the caulking jig 62 is further pushed in from the state in which the wall portion 40b is expanded, the pressing surface of the base portion 62b comes into contact with the expanded wall portion 40b. Since the pressing surface of the base portion 62b is formed flat, the wall portion 40b is crushed toward the support 22 side. Here, since the tip of the convex portion 62a is formed in a spherical rounded shape, it is not pushed beyond the depth of the groove 40 formed in the base end portion. For this reason, the pressing of the crimping jig 62 ends when the tip of the convex portion 62a reaches the deepest portion 40a of the groove 40 (see FIG. 2B). Thereafter, the caulking jig 62 and the press-fitting jig 60 are retracted to complete the fixing of the guide pins 30 to the support 22 (see FIG. 2C).

  By fixing the guide pin 30 in such a manner, the wall portion 40b squeezed by the convex portion 62a is crushed by the base portion 62b, so that the strength of the caulking portion 38 increases. It becomes. Further, since the slide portion 32 side of the guide pin 30 is held by the press-fitting jig 60 even during the caulking process, the guide pin main body is not pushed in the pressing direction by the caulking jig 62. For this reason, no tensile stress is generated between the crimping portion 38 and the base end portion 34, and the crimping portion 38 is not broken. In the case of the present embodiment, the convex portion 62a applies a force that pushes the wall portion 40b outward, and the base portion 62b applies a force that crushes the widened wall portion 40b. The vertical stress is not applied to the main body, and the load generated between the caulking portion 38 and the base end portion 34 can be reduced. Furthermore, by pressing the caulking jig 62 once, two steps such as the expansion of the wall portion 40b and the crushing of the wall portion 40b can be performed, and the productivity can be improved. Furthermore, since the slide portion 32 of the guide pin 30 is held by the press-fitting jig 60 during the caulking process, the guide pin 30 after the caulking process can have high vertical accuracy.

  Further, the crimping jig 62 used in the present embodiment has a spherical tip, and therefore has high resistance to breakage during use. The shape of the convex portion 62a in the crimping jig 62 is spherical, but other shapes may be used as long as the tip has a roundness and each taper has an obtuse angle than the groove provided in the proximal end portion 34. But it ’s okay. Moreover, although the shape of the convex part 62a was suggested to be spherical, the shape of the convex part 62a in the present embodiment may be a so-called saddle shape.

  Next, a second embodiment according to the guide pin mounting method of the disc brake device of the present invention will be described with reference to FIG. The difference between the guide pin mounting method of the disc brake device of this embodiment and the guide pin mounting method of the disc brake device according to the first embodiment is mainly the processing state of the opening portion of the through hole formed in the support. In the shape of the crimping jig for forming the crimping portion. Since other configurations and the like are the same as those of the above-described embodiment, portions having the same functions are denoted by reference numerals obtained by adding 100 to the drawings, and detailed description thereof will be omitted.

  First, the through hole 126 formed in the support 122 will be described. In the present embodiment, a counterbore 122 a is provided in the opening of the through hole 126 for fixing the guide pin 130. The counterbore 122a is provided at least in the opening of the other surface of the support 122, that is, the surface on the side from which the tip of the press-fitted base end portion 134 protrudes. By providing the counterbore hole 122 a in the opening of the support 122, the caulking part 138 when the caulking process is performed is embedded in the counterbore part 122 a, so that the integrity with the support 122 can be improved. .

  Since the pushing of the caulking jig 162 stops at the deepest portion 140a of the groove 140 formed at the tip of the base end portion 134, in order to embed the caulking portion 138 in the counterbore 122a, at least the groove 140 is inserted. The deepest portion 140a of the deep hole 140a needs to be positioned inside the counterbore 122a. For this reason, when the guide pin mounting method according to the present embodiment is performed, the length of the base end portion 134 is set to be longer than the guide pin 30 used in the guide pin mounting method according to the first embodiment. A shortened guide pin 130 is used. Therefore, according to the guide pin mounting method according to the present embodiment, the material cost for manufacturing the guide pin 130 can be reduced.

  As shown in FIG. 3, the caulking jig 162 used in the guide pin mounting method according to the present embodiment is of a so-called pencil shape composed of a conical convex portion 162a and a cylindrical base portion 162b. is there. Note that the crimping jig 162 in the present embodiment is also made to have improved resistance to breakage or the like during pressing by making the tip of the convex portion 162a round. Further, in the present embodiment, it is preferable to approximate the taper angle of the convex part 162a of the caulking jig 162 and the taper angle of the counterbore hole 122a by forming the caulking part 138 so as to be embedded in the counterbore hole 122a. . This is because the wall portion 140b of the expanded groove 140 is in a state along the counterbore hole 122a and the crimped portion 138 is formed.

  A method of attaching the guide pin according to the present embodiment having such characteristics is as follows. First, the base end portion 134 of the guide pin 130 is press-fitted into the through hole 126 using the press-fitting jig 160 (see FIG. 3A). Thereafter, the caulking jig 162 is pressed against the groove 140 formed at the distal end of the base end portion 134 to push the wall portion 140b of the groove 140 outward. The wall portion 140b that has been spread out is used as a crimping portion 138, and the crimping portion 138 is processed so as to be embedded in a counterbore 122a formed in the opening of the support 122 (see FIG. 3B).

  By the caulking process as described above, the guide pin 130 sandwiches the support 122 between the flange portion 136 and the caulking portion 138, and the attachment of the guide pin 130 is completed. After the attachment is completed, the press-fitting jig 160 and the caulking jig 162 are retracted (see FIG. 3C).

  In both the first and second embodiments described above, it is described that a groove is provided in the proximal end portion of the guide pin, and this is processed into a crimped portion. However, as shown in FIGS. 4A to 4C, a recess 141 may be provided in the base end portion instead of the groove. As the shape of the concave portion 141, the cross-sectional shape thereof is V-shaped or U-shaped like the groove of the above embodiment. This is because by using such a shape, it is possible to obtain the same effect as in the above embodiment. In addition, when the groove provided at the distal end of the base end portion 134 is the recess 141, the caulking portion 138 is formed over the entire circumference of the through hole 126, although the workability is poor. The attachment strength of the guide pin 130, that is, the fixing property is improved.

  Next, a third embodiment according to the guide pin mounting method of the disc brake device of the present invention will be described with reference to FIG. The difference between the guide pin mounting method of the disc brake device of the present embodiment and the guide pin mounting method of the disc brake device according to the first embodiment is mainly that a ring-shaped member is provided between the caulking portion and the support. It is that it was made to intervene. Since other configurations and the like are the same as those of the above-described embodiment, portions having the same functions are denoted by reference numerals obtained by adding 200 to the reference numerals, and detailed description thereof will be omitted.

  The guide pin mounting method according to the present embodiment is characterized in that a ring-shaped member 223 that is an annular stopper is fitted on the distal end side of the base end portion 234 that is pressed into the through hole 226 of the support 222 and protrudes. Yes.

  In the caulking process, the guide pin 230 is press-fitted into the through-hole 226 using the press-fitting jig 260, and then the ring-shaped member 223 is fitted to the distal end of the base end portion 234 protruding from the through-hole 226 (see FIG. 5A). ). The inner diameter of the ring-shaped member 223 is equal to or slightly larger than the outer shape of the base end portion 234, and when the crimped portion 238 is formed, the ring-shaped member 223 can be pressed down by the crimped portion 238.

After the ring-shaped member 223 is fitted into the base end portion 234, the crimping jig 262 is pushed into the concave portion 241, and the wall portion 241b forming the concave portion 241 is pushed outward to form the crimping portion 238. As a result, the support 222 and the ring-shaped member 223 are held together by the flange portion 236 and the caulking portion 238. Note that the pressing of the caulking jig 262 ends after the convex portion 262a reaches the deepest portion 241a of the concave portion 241 (see FIG. 5B).
Thereafter, the press-fitting jig 260 and the caulking jig 262 are retracted to complete the caulking process (see FIG. 5C).

  When the guide pin is fixed by caulking, in order to remove the guide pin, it is necessary to scrape the processed caulking portion. Normally, the caulking part and the support are in close contact with each other, so when trying to cut the caulking part, the jig (tool) for scraping the caulking part comes into contact with the support, and the support surface is damaged. Things can happen. On the other hand, when the ring-shaped member 223 is interposed between the caulking portion 238 and the support 222 as in this embodiment, the ring-shaped member 223 is in close contact with the caulking portion 238. . For this reason, even when the caulking portion 238 is scraped off, the jig for scraping the caulking portion 238 does not come into contact with the surface of the support 222, and the surface of the support 222 is not damaged.

  The caulking jig 262 used in this embodiment may be the caulking jig 162 used in the second embodiment in addition to the shape shown in FIG.

  In any of the guide pins attached by the above-described method, the groove or the concave portion that is the contact portion of the caulking jig remains in the center of the caulking portion. For this reason, the guide pin attached by the method according to the present embodiment can be specified by the shape of the caulking portion.

  In the above-described embodiments, the disc brake device of the type that fixes the guide pin to the support has been described as an example. However, the guide pin mounting method of the disc brake device of the present invention is also applicable to a disc brake device having a configuration as shown in FIGS. 6 (A) and 6 (B).

  The disc brake device of the present embodiment is also based on the support and caliper. The difference from the disc brake device shown in the above embodiment lies in the structure of the support and caliper and the location where the guide pin is attached. Therefore, a reference numeral obtained by adding a to the reference numeral shown in FIG.

  Specifically, the support 22a in the disc brake device 10a of the present embodiment is formed by casting, and the shape of the joint surface and the like is adjusted by cutting. The support 22a is provided with a sliding hole 22b for sliding the guide pin 30a in addition to the screw hole 24a for fixing the support itself to a vehicle or the like.

  The caliper 12a basically includes a cylinder portion 14a, a bridge portion 16a, and a claw portion 18a. The cylinder portion 14a includes a cylinder body 13 formed by casting or the like, and a base member 15 that fixes the cylinder body 13. The cylinder body 13 has a piston (not shown) inside. The base member 15 is a flat steel plate that has been punched or cut, and is provided with a through hole 15a for fixing a bridge portion 16a, which will be described in detail later, and a through hole 15b for attaching a guide pin 30a. ing.

  The claw portion 18a is formed integrally with a bridge portion 16a formed by bending a steel plate. By disposing the bridge portion 16a so as to straddle the disc rotor 50a, the claw portion 18a is disposed at a position facing the cylinder portion 14a. In addition, although the effect | action of each part in the cylinder part 14a, the bridge | bridging part 16a, and the nail | claw part 18a is the same as the said embodiment, in the case of this embodiment, the bridge | bridging part 16 and a nail | claw part with respect to the base member 15 of the cylinder part 14a. The member which comprises 18 is bolted.

  As described above, the guide pin mounting by the guide pin fixing method of the disc brake device of the present invention may be performed on the caliper side or on the support side if the mounting partner is a flat plate member. Can be adopted.

It is a figure showing the schematic structure of the disc brake device concerning the present invention. It is a block diagram for demonstrating the guide pin attachment method which concerns on 1st Embodiment. It is a block diagram for demonstrating the guide pin attachment method which concerns on 2nd Embodiment. It is a block diagram for demonstrating the modification of the guide pin attachment method which concerns on 2nd Embodiment. It is a block diagram for demonstrating the guide pin attachment method which concerns on 3rd Embodiment. It is the schematic which shows the other structure of the disc brake apparatus which concerns on this invention. It is a figure which shows the conventional guide pin attachment method.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ......... Disc brake device, 12 ......... Caliper, 14 ......... Cylinder part, 16 ......... Bridge part, 18 ...... Nail | claw part, 20 ......... Fastening part, 20a ......... Sliding hole, 22 ......... Support, 24 ......... Screw hole, 26 ......... Through hole, 30 ......... Guide pin, 32 ......... Slide part, 34 ......... Base end part, 36 ......... Flange part, 38 ......... Caulking section, 50 ......... Disc rotor.

Claims (5)

A guide pin mounting method for guiding a slide of the caliper received in a slide hole formed in a support or caliper in a floating disc brake device,
The guide pin includes a slide portion received in the slide hole, a base end portion fitted in a through hole formed at a fixed position, the slide portion, and the base end portion, with the base end portion being separated. A flange portion that regulates the insertion depth, and a groove or recess having a V-shaped cross section or a U-shaped cross section is provided at the distal end of the base end portion.
The base end portion is vertically fitted to the through-hole while supporting the slide portion and the flange portion by a fitting jig,
While maintaining the supporting state by the fitting jig, the taper angle is obtuse than the V-shape or U-shape constituting the groove or recess at the distal end of the base end portion protruding through the through-hole, and Press a caulking jig with a convex part with a rounded tip,
A disk brake device characterized in that a wall portion constituting the groove or recess is expanded outward to form a crimping portion, and a fixing member having the through hole is sandwiched between the flange portion and the crimping portion. How to install guide pins. The caulking jig is composed of a base portion having a flat surface facing the fixing member around the convex portion,
After pushing the groove or recess outward by pressing the projection,
2. The guide pin mounting method for a disk brake device according to claim 1, wherein the squeezed wall portion is crushed by the base portion to form a crimped portion.   2. The guide pin mounting method for a disc brake device according to claim 1, wherein a counterbore is formed in an opening on a side through which the base end portion protrudes in a through hole formed in the fixing member. After fitting the base end to the through hole, an annular member is inserted through the protruding portion of the base end,
Then press the caulking jig,
3. The guide pin mounting method for a disc brake device according to claim 1, wherein the fixing member and the annular member are sandwiched between the flange portion and the caulking portion.   5. A disc brake device, wherein a guide pin is fixed by the method according to any one of claims 1 to 4.

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