JP2013221603A - Seal member assembling tool and method for assembling seal member - Google Patents

Abstract

A seal member assembling tool and an assembling method capable of easily assembling a seal member into a cylinder hole of a caliper body.
A seal member assembly 20 for assembling a dust seal 6 and a piston seal 5 in an annular seal groove formed in a cylinder hole of a caliper body, and having an outer diameter smaller than the inner diameter of the dust seal 6 and the piston seal 5 And a holding groove portion that is provided on the outer peripheral surface of the holding member 21 and holds the dust seal 6 and the piston seal 5 in a state in which the diameter is reduced to an outer diameter smaller than the inner diameter of the cylinder hole 3c. An insertion groove portion that is opened in the holding groove portion and is inserted by being pushed in part in the radial direction, and a part of the seal member that has been reduced in diameter in a state where the holding member 21 is inserted into the cylinder hole 3c. And a return tool 31 for returning to the above state.
[Selection] Figure 1

Description

  The present invention relates to a seal member assembling tool for assembling a seal member into a cylinder hole and a method for assembling the seal member, and in particular, assembling a seal member into a seal groove formed in a cylinder hole of a caliper body. The present invention relates to a method for assembling a tool and a seal member.

  Conventionally, in a monocoque piston-type caliper body integrally formed with a pair of action portions and a bridge portion that connects the pair of action portions on the outer peripheral side of the disk rotor, in a seal groove formed in a cylinder hole, When the seal member is assembled, a seal member such as a piston seal or a dust seal is inserted into the cylinder hole and assembled from an opening formed between the two acting portions (see, for example, Patent Document 1).

Japanese Patent No. 4778978

  However, as described above, assembly of a seal member such as a piston seal or a dust seal from the opening formed between the two action portions is troublesome and has a low work space, resulting in poor workability.

  Accordingly, an object of the present invention is to provide a seal member assembling tool and an assembling method that can easily assemble a seal member to a caliper body.

  In order to achieve the above object, a seal member assembling tool of the present invention is a seal member assembling tool for assembling an annular seal member in an annular seal groove formed in a cylinder hole of a caliper body. A circular holding member having an outer diameter smaller than the inner diameter of the cylindrical member, and an annular holding member that is provided on the outer peripheral surface of the holding member and holds the seal member that has been reduced in diameter to an outer diameter smaller than the inner diameter of the cylinder hole A groove portion, an insertion groove portion that opens into the holding groove portion and is inserted by being partly pushed in the radial direction, and the diameter-reduced sealing member in a state in which the holding member is inserted into the cylinder hole And a return tool for returning a part of the device to the original state.

  The holding member includes a substrate having an outer diameter corresponding to the inner diameter of the seal member, and a guide member that is disposed on an upper surface of the substrate, has an outer diameter smaller than that of the substrate, and includes the insertion groove portion in the diameter direction. And a top plate member disposed on an upper surface of the guide member and having an outer diameter larger than an inner diameter of the seal member mounting step portion, and the return tool is parallel to the insertion groove portion on the top plate member. A slide member movably provided in any direction, a protrusion projecting from the slide member toward the substrate, and a distal end portion being inserted into the insertion groove through a slit parallel to the insertion groove provided in the top plate member. And a return member that returns a part of the seal member inserted into the insertion groove to its original state.

  Further, the holding member includes a seal member diameter-reducing guide tool for holding the seal member, the seal member diameter-reducing guide tool having a holding tool insertion hole having an inner diameter into which the holding member can be inserted, and the holding member. An annular seal member mounting step portion provided on the periphery of the opening of the tool insertion hole for mounting the seal member, and a part of the seal member mounted on the seal member mounting step portion in the insertion groove portion It is preferable to provide a pressing tool that reduces the diameter of the remaining portion of the seal member along the holding groove by being pushed.

  The seal member diameter-reducing guide tool is open to a main body having the holder insertion hole and the seal member mounting step, an outer surface of the main body, and a peripheral wall of the seal member mounting step. It is preferable that a pressing tool insertion portion for inserting the pressing tool in a radial direction is provided, and the pressing tool includes a pressing portion that presses a part of the seal member into the insertion groove portion at a distal end.

  Furthermore, it is preferable that the insertion groove is formed in a shape capable of holding a part of the seal member that has been deformed by being pushed by the pusher in a deformed state.

  Further, the seal member is a dust seal and a piston seal, and the holding member is inserted into the upper portion of the substrate at the same diameter as the substrate and at a position corresponding to the insertion groove. A second substrate having a slide groove is disposed, and a first guide member for dust seal that holds the dust seal with a reduced diameter is provided between the second substrate and the top plate member, It is preferable that a second guide member for piston seal that holds the piston seal with a reduced diameter is provided between the second substrate and the substrate.

  Furthermore, a plurality of the holding members can be connected in parallel.

  Further, the caliper body has a pair of action portions each provided with the cylinder hole disposed on both sides of the disk rotor, and a bridge portion that integrally connects the pair of action portions on the outer peripheral side of the disk rotor. It should be a caliper body facing the monocoque piston.

The seal member assembly method of the present invention is the seal member assembly method in which the seal member is assembled to the seal groove using the above-described seal member assembly tool. A seal member placing step for placing the seal member; a holding member inserting step for inserting the holding member into the holder insertion hole through the inside of the seal member; and the seal member placing step portion by the pusher. A part of the placed seal member is pushed into the insertion groove part, and the remaining part of the seal member is reduced in diameter along the holding groove part, and the seal member is returned after the pusher is returned. A cylinder hole insertion step of removing the holding member held in a reduced diameter state from the holder insertion hole and inserting the holding member into the cylinder hole is aligned with the positions of the seal member and the seal groove. Assembling the seal member, the seal member that has been pushed into the insertion groove by the return tool is restored to its original state and the seal member is assembled to the seal groove by the elastic force of the seal member. And a process.

  According to the seal member assembling tool of the present invention, a circular holding member having an outer diameter smaller than the inner diameter of the seal member, and a diameter reduced to an outer diameter smaller than the inner diameter of the cylinder hole provided on the outer peripheral surface of the holding member. An annular holding groove for holding the seal member in a state in which the seal member is held, an insertion groove that is inserted into the holding groove by being pushed in a radial direction, and the holding member is inserted into the cylinder hole. And a return tool that restores a part of the reduced diameter seal member to the original state, so that a part of the seal member is pushed into the insertion groove and the diameter of the seal member is reduced to the holding groove. , And by inserting the holding member into the cylinder hole and returning it to the original state by the return tool at the position of the seal groove, the seal member can be easily and reliably assembled to the seal groove.

The holding member includes a substrate having an outer diameter corresponding to the inner diameter of the seal member, a guide member disposed on the upper surface of the substrate, having an outer diameter smaller than that of the substrate, and having the insertion groove portion in the diameter direction, A top plate member disposed on the upper surface of the guide member and having an outer diameter larger than the inner diameter of the seal member mounting step portion, and the return tool is provided on the top plate member so as to be movable in a direction parallel to the insertion groove portion. And a sealing member that protrudes in the direction of the substrate from the slide member and is inserted into the insertion groove by inserting the tip into the insertion groove through a slit parallel to the insertion groove provided in the top plate member. A holding member is formed by the upper surface of the substrate, the outer peripheral surface of the guide member, and the lower surface of the top plate member. , Provided on the top plate member Therefore, the holding member can be easily formed. Furthermore, the holder insertion hole having an inner diameter into which the holding member can be inserted, and the seal member provided on the periphery of the opening of the holder insertion hole are placed. An annular seal member mounting step portion, and a pusher for reducing the diameter of the remaining seal member along the holding groove portion by pushing a part of the seal member mounted on the seal member mounting step portion into the insertion groove portion. By using the seal member diameter reducing guide provided, the seal member is placed on the seal member placement step, the holder is inserted into the holder insertion hole, and a part of the seal member is inserted into the insertion groove by the pusher. By pushing in, the remaining part of the seal member can be easily reduced in diameter along the holding groove.

  In addition, the seal member diameter-reducing guide tool opens to the main body portion having the holder insertion hole and the seal member placement step portion, the outer surface of the main body portion, and the peripheral wall of the seal member placement step portion, and pushes the pusher in the radial direction. The pusher has a push-in part that pushes a part of the seal member into the insertion groove, so that the structure can be simplified and the cost may increase. Absent.

  Furthermore, since the insertion groove is formed in a shape that can hold a part of the seal member that has been pushed and deformed by the pusher in a deformed state, the seal member can be reliably held by the holding member.

  In addition, by connecting a plurality of holding members in parallel, when assembling the seal material into the cylinder hole of the caliper body provided with a plurality of cylinder holes, the assembly work of the seal member can be performed efficiently, Workability can be improved.

  In particular, a monocoque piston with a narrow working space in which a pair of working portions each having a cylinder hole are disposed on both sides of the disc rotor, and a bridge portion connecting the pair of working portions is integrally formed on the outer peripheral side of the disc rotor. The seal member can be satisfactorily assembled in the cylinder hole of the opposed caliper body.

  According to the method for assembling a seal member of the present invention, using the above-described seal member assembling tool, the seal member placement step of placing the seal member on the seal member placement step portion, and passing through the inside of the seal member A holding member insertion step of inserting the holding member into the holding tool insertion hole, and a part of the seal member placed on the seal member placement step portion is pushed into the insertion groove portion by the pusher, and the remaining portion of the seal member is used as the holding groove portion. A seal member diameter reducing step for reducing the diameter along the cylinder, a cylinder hole inserting step for removing the holding member holding the seal member in a reduced diameter state after returning the pusher from the holder insertion hole, and inserting it into the cylinder hole, and a seal In a state where the position of the member and the seal groove is matched, a part of the seal member pushed into the insertion groove portion by the return tool is returned to the original state, and the seal member is made into the seal groove by the elastic force of the seal member. Set By performing kick and seal member assembling process can be sequentially assembled the sealing member to the cylinder bore by a simple process.

It is a disassembled perspective view which shows the sealing member assembly tool which shows the 1st example of this invention. Similarly it is principal part sectional drawing of a sealing member assembly tool. FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is IV-IV sectional drawing of FIG. It is principal part sectional drawing which shows the state which reduced the diameter of the dust seal set to the sealing member diameter-reduction guide tool. It is VI-VI sectional drawing of FIG. It is a principal part cross section which shows the state which set the piston seal and the holding member to the sealing member diameter-reduction guide tool. It is VIII-VIII sectional drawing of FIG. It is principal part sectional drawing which shows the state which diameter-reduced the piston seal set to the sealing member diameter-reduction guide tool. It is XX sectional drawing of FIG. It is sectional drawing which shows the state which inserted the seal holder in the cylinder hole. It is XII-XII sectional drawing of FIG. It is sectional drawing which shows the state which returned the piston seal and the dust seal to the original state with the return tool, and was assembled | attached to the seal groove. It is XIV-XIV sectional drawing of FIG. It is sectional drawing of a disc brake. It is a top view of the sealing member assembly tool which shows the 2nd form example of this invention.

  FIGS. 1 to 14 show a first embodiment of the present invention, and a seal member used when a piston seal and a dust seal are simultaneously assembled in a piston seal groove and a dust seal groove formed in a cylinder hole of a caliper body. The assembly tool is shown.

  As shown in FIG. 15, the disc brake 1 includes a disc rotor 2, a monocoque piston-facing caliper body 3 fixed to the vehicle body at one side of the disc rotor 2, and an interior of the caliper body 3. Are provided with a pair of friction pads 4 and 4 which are opposed to each other with the disc rotor 2 interposed therebetween.

  The caliper body 3 is integrally provided with a pair of action portions 3b and 3b disposed on both sides of the disc rotor 2 at both ends of the bridge portion 3a straddling the outer periphery of the disc rotor 2, and the action portions 3b and 3b include a disc Cylinder holes 3c opened on the rotor 2 side are provided to face each other. Each cylinder hole 3c is provided with a piston seal groove 3d in which the piston seal 5 is assembled and a dust seal groove 3e in which the dust seal 6 is assembled, and the piston 7 is interposed between the piston seal 5 and the dust seal 6 in the cylinder hole 3c. Furthermore, a hydraulic chamber 8 to which hydraulic fluid is supplied is defined between the bottom of each cylinder hole 3 c and the bottom surface of each piston 7.

  As shown in FIG. 1, the piston seal 5 and the dust seal 6 are a seal member assembly in which the piston seal 5 and the dust seal 6 are held using a dust seal diameter reducing guide 11 and a piston seal diameter reducing guide 12. Using the attachment 20, the piston seal groove 3d and the dust seal groove 3e are respectively assembled.

  The seal member assembling tool 20 is provided on a circular holding member 21 having an outer diameter smaller than the inner diameters of the piston seal 5 and the dust seal 6 and an outer peripheral surface of the holding member 21 in a state of being assembled in the cylinder hole 3c. An annular dust seal holding groove portion 21a and a piston seal holding groove portion 21b for holding the dust seal 6 and the piston seal 5 in a state of being reduced to an outer diameter smaller than the inner diameter of the cylinder hole 3c, and the dust seal holding groove portion 21a and The dust seal insertion groove 21c and the piston seal insertion groove 21d are inserted into the piston seal holding groove 21b, respectively, and the dust seal 6 or a part of the piston seal 5 is inserted in the radial direction and inserted into the cylinder hole 3c. The dust seal 6 and the piston that have been reduced in diameter while being inserted into the piston And a return member 31 for returning a part of Lumpur 5 to its original state.

  The holding member 21 includes a first substrate 22 having an outer diameter corresponding to the inner diameters of the dust seal 6 and the piston seal 5, a second substrate 23 having the same diameter as the first substrate 22, and a second substrate 23. The dust seal guide member 24 (first guide member) is disposed on the upper surface of the second substrate 23 to hold the dust seal 6 with a reduced diameter, and the piston seal 5 is disposed on the lower surface of the second substrate 23 with the diameter reduced. The piston seal guide member 25 (second guide member) and the top plate member 26 disposed on the upper surface of the dust seal guide member 24 and having an outer diameter larger than that of the second substrate 23 are formed.

  The second substrate 23 includes a slide groove 23a through which the return member 31a of the return tool 31 is inserted at a position corresponding to the dust seal insertion groove 21c and the piston seal insertion groove 21d. Furthermore, at the middle position between the upper surface and the lower surface of the second substrate 23, the upper surface thick portion 23b and the lower surface thick portion 23c that gradually increase in thickness toward the opposite side of the dust seal insertion groove 21c and the piston seal insertion groove 21d. And are provided respectively.

  The dust seal guide member 24 and the piston seal guide member 25 each have an outer diameter smaller than that of the second substrate 23, and the dust seal guide groove 24 includes the dust seal insertion groove 21 c in the diameter direction. The piston seal insertion groove 21d is formed in the same direction in the diameter direction.

  The top plate member 26 has an insertion hole 26a parallel to the dust seal insertion groove 21c and the piston seal insertion groove 21d, and an opening 26b that opens toward the slide groove 23a is formed on the lower wall of the insertion hole 26a. ing.

  The return tool 31 includes a slide member 31b that is movably inserted into the insertion hole 26a of the top plate member 26, and a return member 31a that protrudes from the slide member 31b toward the substrate.

  Then, by connecting the top plate member 26, the dust seal guide member 24, the second substrate 23, the piston seal guide member 25, and the first substrate 22 with a plurality of bolts and connection pins, the top plate The dust seal holding groove 21a and the dust seal insertion groove 21c are formed between the member 26 and the second substrate 23, and the piston seal holding is between the second substrate 23 and the first substrate 22. A groove portion 21b and a piston seal insertion groove portion 21d are formed. Furthermore, the dust seal holding groove 21a is formed in a shape capable of holding a part of the pushed-in dust seal 6, and the piston seal holding groove 21d is formed in a shape capable of holding a part of the pushed-in piston seal 5.

  The dust seal diameter-reducing guide device 11 includes a main body portion 11 a and a pressing device 13, and the main body portion 11 a can insert the first substrate 22, the piston seal guide member 25, and the second substrate 23 of the holding member 21. A holder insertion hole 11b having an inner diameter and a depth, an annular dust seal mounting step portion 11c provided on the periphery of the opening of the holder insertion hole 11b, on which the dust seal 6 is mounted, and an outer surface of the main body portion 11a. And a pusher insertion part 11d that opens in the peripheral wall of the dust seal mounting step part 11c and passes the pusher 13 in the radial direction. When the holding member 21 is inserted into the holder insertion hole 11b, the dust seal mounting step portion 11c and the dust seal holding groove portion 21a are arranged on the same plane. In addition, a narrow pushing portion 13a for pushing a part of the dust seal 6 placed on the dust seal placing step portion 11c into the dust seal insertion groove portion 21c is provided at the tip of the pushing tool 13.

  The piston seal diameter-reducing guide device 12 includes a main body portion 12a and a pressing device 13. The main body portion 12a has a holding tool insertion hole 12b having an inner diameter and a depth into which the first substrate 22 of the holding member 21 can be inserted. And an annular piston seal mounting step 12c provided on the periphery of the opening of the holder insertion hole 12b for mounting the piston seal 5, an outer surface of the main body 12a, and a peripheral wall of the piston seal mounting step 12c. And a pusher insertion portion 12d through which the pusher 13 is inserted in the radial direction. When the holding member 21 is inserted into the holder insertion hole 12b, the piston seal mounting step portion 12c and the piston seal holding groove portion 21b are arranged on the same plane. As the pressing tool 13, the same pressing tool 13 as that used for the dust seal diameter-reducing guide tool 11 can be used.

  Next, based on FIG. 2 thru | or FIG. 14, the assembly | attachment process of assembling the dust seal 6 and the piston seal 5 to the dust seal groove 3e and the piston seal groove 3d by the method of this invention is demonstrated. First, as shown in FIGS. 2 to 4, a dust seal placement step (seal) in which the dust seal 6 is placed on the dust seal placement step portion 11 c of the dust seal reduced diameter guide portion 11 with the pusher 13 retracted. Member mounting step).

  Next, the first substrate 22, the piston seal guide member 25, and the second substrate 23 of the holding member 21 are connected to the dust seal 6 in a state where the return member 31 a of the return tool 31 is disposed on the side opposite to the pusher insertion part. The holding member insertion process of inserting into the holder insertion hole 11a of the dust seal diameter-reducing guide tool 11 is performed through the inside.

  Next, as shown in FIG. 5 and FIG. 6, the top surface of the second substrate 23 and the dust seal mounting stage in a state where the bottom surface of the first substrate 22 and the bottom surface of the holder insertion hole 11 b are in contact with each other. The part 11c is flush with the pusher 13 and the pusher 13 is inserted into the pusher insertion part 11d. The pusher 13a pushes a part of the dust seal 6 placed on the dust seal placement step part 11c into the dust seal insertion groove 21c. A dust seal diameter reducing step (sealing member diameter reducing step) is performed in which the remaining portion of the dust seal 6 is reduced in diameter along the dust seal holding groove 21a.

  Next, after the pusher 13 is returned and the holding member 21 holding the dust seal 6 in the reduced diameter state is removed from the dust seal reduced diameter guide tool 11, as shown in FIGS. The piston seal placing step (sealing member placing step) for placing the piston seal 5 on the 12 piston seal placing step portion 12 c is performed, and then the first substrate 22 of the holding member 21 is placed inside the piston seal 5. Then, a holding member insertion step of inserting into the holder insertion hole 12b of the piston seal diameter reducing guide 12 is performed.

  Next, as shown in FIGS. 9 and 10, with the bottom surface of the first substrate 22 and the bottom surface of the holder insertion hole 12b in contact, the bottom surface of the second substrate 23 and the piston seal mounting step 12c. And the pusher 13 is inserted into the pusher insertion part 12d, and a part of the piston seal 5 placed on the piston seal placement step part 12c is pushed into the piston seal insertion groove 21d by the pusher 13a. Then, a piston seal diameter reducing step (sealing member diameter reducing step) is performed in which the remaining portion of the piston seal 5 is reduced in diameter along the piston seal holding groove 21b.

  Further, as shown in FIGS. 11 and 12, after the pusher 13 is returned, the holding member 21 holding the dust seal 6 and the piston seal 5 in the reduced diameter state is removed from the piston seal diameter reducing guide tool 12, and the cylinder hole is removed. A cylinder hole inserting step for inserting into 3c is performed.

  Next, with the tip end surface of the cylinder hole opening of the caliper body and the top plate member 26 in contact with each other, the positions of the dust seal 6 and the dust seal groove 3e, and the piston seal 5 and the piston seal groove 3d are matched with each other in FIG. 14 and 14, the return member 31a of the return tool 31 is slid to the bridge portion side along the slide groove 23a, and a part of the dust seal 6 inserted into the dust seal holding groove portion 21a and the piston seal holding are provided. Part of the piston seal 5 inserted in the groove 21b is restored to its original state, and the dust seal 6 and the piston seal 5 are changed into the dust seal groove 3e and the piston seal groove 3d by the elastic force of the dust seal 6 and the piston seal 5. A sealing member assembling step for assembling each is performed. Thereby, the dust seal 6 and the piston seal 5 are assembled into the dust seal groove 3e and the piston seal groove 3d, respectively.

  The seal member assembly tool 20 of the present embodiment is formed as described above, so that the dust seal 6 and the piston seal 5 are held in the seal member assembly tool 20 in a reduced diameter state. The attachment 20 is inserted into the cylinder hole 3c, the dust seal 6 and the piston seal 5 are arranged at positions corresponding to the dust seal groove 3e and the piston seal groove 3d, respectively, and the diameter of the dust seal 6 and the piston seal 5 is reduced by the return tool 31. Since the dust seal 6 and the piston seal 5 are simultaneously assembled in the dust seal groove 3e and the piston seal groove 3d, respectively, the dust seal 6 and the piston seal 5 can be easily and reliably assembled. The workability can be improved. Further, the assembly of the dust seal 6 and the piston seal 5 can be automated, and the working efficiency can be greatly improved.

  Further, the dust seal guide member 24 and the piston seal guide member 25 are respectively attached to the upper surface and the lower surface of the second substrate 23, and the dust seal 6 and the piston seal 5 are held by one seal member assembly tool 20, and Since the return seal 31 allows the dust seal 6 and the piston seal 5 to be assembled at once into the dust seal groove 3e and the piston seal groove 3d, the dust seal 6 and the piston seal 5 are combined into the dust seal groove 3e and the piston seal groove 3d. It can be assembled efficiently. Further, the dust seal insertion groove 21c is formed in a shape capable of holding a part of the pushed-in dust seal 6, and the piston seal insertion groove 21d is formed in a shape capable of holding a part of the pushed-in piston seal 5, respectively. Since the upper surface thick portion 23b and the lower surface thick portion 23c are respectively provided on the second substrate 23, the dust seal 6 and the piston seal 5 are pushed by the pusher 13 and inserted into the seal insertion groove portions 21c and 21d. Thereafter, even if the pusher 13 is retracted, the dust seal 6 and the piston seal 5 can be reliably held in the reduced diameter state along the seal holding groove portions 21a and 21b.

  Moreover, using the above-described seal member assembly tool 20, a seal member placement step, a holding member insertion step, a seal member diameter reducing step, a cylinder hole insertion step, and a seal member assembly step are sequentially performed. Thus, the dust seal 6 and the piston seal 5 can be assembled to the dust seal groove 3e and the piston seal groove 3d at the same time.

  FIG. 16 shows a second embodiment of the present invention. Components that are the same as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The seal member assembling tool of this embodiment is used when assembling the dust seal 6 and the piston seal 5 into the cylinder hole of the 6-pot piston-facing caliper body, and has three cylinder holes provided in one working part. Accordingly, three holding members are provided. The three holding members 41, 42, 43 are arranged according to the arrangement of the three cylinder holes and are connected by the connecting arm 44, and the return tools 41 a, 42 a, 43 a are also connected by the connecting member 45, and the connecting member 45 is connected. A knob 45a is provided at the center of the head.

  As in the first embodiment, the holding members 41, 42, and 43 in the present embodiment are in a state in which the dust seal 6 and the piston seal 5 are reduced in diameter and held in the holding members 41, 42, and 43, respectively. Each is inserted into the corresponding cylinder hole, and the knob 45a is pushed into the bridge part side of the caliper body at a predetermined position, whereby the dust seal 6 and the piston seal 5 are inserted into the dust seal groove and the piston seal groove of each cylinder hole. Can be assembled at once. Thereby, the workability | operativity of the assembly | attachment operation | work which assembles the dust seal 6 and the piston seal 5 to the cylinder hole of a multi-pot caliper body can be improved significantly.

  Note that the seal member assembly tool of the present invention is not limited to the seal member having a reduced diameter guide portion, and the seal member is held by the holding member, as in the above-described embodiments. The means to make is arbitrary. Further, the dust seal and the piston seal may not be assembled at a time as in the above-described embodiment. Furthermore, the seal member assembling tool can be appropriately connected and formed according to the number of cylinder holes of the caliper body to be applied, the outer diameter, and the formation position.

  DESCRIPTION OF SYMBOLS 1 ... Disc brake, 2 ... Disc rotor, 3 ... Caliper body, 3a ... Bridge part, 3b ... Action part, 3c ... Cylinder hole, 3d ... Piston seal groove, 3e ... Dust seal groove, 4 ... Friction pad, 5 ... Piston seal , 6 ... dust seal, 7 ... piston, 8 ... hydraulic chamber, 11 ... dust seal diameter reducing guide, 11a ... main body, 11b ... holder insertion hole, 11c ... dust seal mounting step, 11d ... pusher insertion part, DESCRIPTION OF SYMBOLS 12 ... Piston seal diameter-reduction guide tool, 12a ... Main body part, 12b ... Holding tool insertion hole, 12c ... Piston seal mounting step part, 12d ... Push tool insertion part, 13 ... Push tool, 13a ... Press part, 20 ... Seal Member assembly, 21 ... Holding member, 21a ... Dust seal holding groove, 21b ... Piston seal holding groove, 21c ... Dust seal insertion groove, 21d ... Piston seal Insertion slot, 22 ... first substrate, 23 ... second substrate, 23a ... slide groove, 23b ... thick top surface, 23c ... thick bottom surface, 24 ... dust seal guide member, 25 ... piston seal guide member, 26 ... Top plate member, 26a ... insertion hole, 26b ... opening, 31 ... return tool, 31a ... return member, 31b ... slide member, 41, 42, 43 ... holding member, 41a, 42a, 43a ... return tool, 44 ... Connecting arm, 45 ... Connecting member, 45a ... Knob

Claims (9)

A seal member assembly for assembling an annular seal member in an annular seal groove formed in a cylinder hole of a caliper body, a circular holding member having an outer diameter smaller than the inner diameter of the seal member, and the holding An annular holding groove provided on the outer peripheral surface of the member for holding the seal member in a state of being reduced in diameter to an outer diameter smaller than the inner diameter of the cylinder hole, and a part of the seal member opened to the holding groove An insertion groove portion that is inserted by being pushed in in the radial direction, and a return tool that returns a part of the reduced-diameter seal member to the original state in a state where the holding member is inserted into the cylinder hole. A seal member assembling tool characterized by that. The holding member includes a substrate having an outer diameter corresponding to the inner diameter of the seal member, a guide member disposed on an upper surface of the substrate, having an outer diameter smaller than the substrate, and having the insertion groove portion in the diameter direction, A top plate member disposed on an upper surface of the guide member and having an outer diameter larger than an inner diameter of the seal member mounting step portion;
The return tool is provided on the top plate member so as to be movable in a direction parallel to the insertion groove portion, and the insertion groove portion provided on the top plate member is provided so as to protrude from the slide member toward the substrate. And a return member for returning a part of the seal member inserted into the insertion groove to its original state through a slit in a direction parallel to the insertion groove. The seal member assembly tool according to 1. The holding member includes a seal member diameter-reducing guide tool for holding the seal member, and the seal member diameter-reducing guide tool includes a holder insertion hole having an inner diameter into which the holding member can be inserted, and the holder insertion An annular seal member mounting step provided on the periphery of the opening of the hole for mounting the seal member, and a part of the seal member mounted on the seal member mounting step are pushed into the insertion groove. The sealing member assembly according to claim 1, further comprising: a pressing tool that reduces the diameter of the remaining portion of the sealing member along the holding groove. The seal member diameter-reducing guide tool is opened to the main body portion having the holder insertion hole and the seal member placement step portion, an outer surface of the main body portion, and a peripheral wall of the seal member placement step portion, and the push member is pushed. A pressing tool insertion part for inserting the tool in the radial direction,
The seal member assembling tool according to claim 3, wherein the pusher includes a push-in portion that pushes a part of the seal member into the insertion groove. The said insertion groove part is formed in the shape which can hold | maintain in a deformed state a part of said seal member which was pushed in and deform | transformed by the said pressing tool. Seal member assembly tool. The seal member is a dust seal and a piston seal,
The holding member has a second substrate having a slide groove through which the return member is inserted at a position having the same diameter as the substrate and corresponding to the insertion groove portion on the upper portion of the substrate.
Between the second substrate and the top plate member, a first guide member for dust seal that holds the dust seal with a reduced diameter is provided, and between the second substrate and the substrate, The seal member assembly according to any one of claims 2 to 5, wherein a second guide member for piston seal that holds the piston seal with a reduced diameter is provided. The seal member assembly according to any one of claims 1 to 6, wherein a plurality of the holding members are connected in parallel. The caliper body is a monocoque piston in which a pair of action portions each having the cylinder hole are arranged on both sides of the disc rotor, and a bridge portion connecting the pair of action portions on the outer peripheral side of the disc rotor is integrally formed. The seal member assembling tool according to any one of claims 1 to 7, wherein the seal member assembly is an opposing caliper body. In the assembly method of the seal member which assembles the seal member in the seal groove using the seal member assembly tool according to any one of claims 2 to 7,
A seal member placement step of placing the seal member on the seal member placement step;
A holding member insertion step of inserting the holding member into the holder insertion hole through the inside of the seal member;
A seal member diameter reducing step of pushing a part of the seal member placed on the seal member placement step portion by the pusher into the insertion groove portion and reducing a diameter of a remaining portion of the seal member along the holding groove portion; ,
A cylinder hole inserting step of removing the holding member holding the seal member in a reduced diameter state after returning the pressing tool from the holding tool insertion hole and inserting the holding member into the cylinder hole;
In a state where the positions of the seal member and the seal groove are aligned, a part of the seal member pushed into the insertion groove by the return tool is returned to the original state, and the elastic force of the seal member is used. And a sealing member assembling step for assembling the sealing member in the sealing groove.

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