JP3158917B2 - Disc brake device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc brake device for braking a vehicle.

[0002]

2. Description of the Related Art In a disk brake device having a structure in which a disk rotor is sandwiched between a pair of pads and braked,
A so-called pin slide type disc brake device is known.

In this type of pin-slide type disc brake device, a cylinder is slidably supported by a slide pin fixed to an inner mounting, and a piston is accommodated in the cylinder. An inner pad is linked to this piston.
Further, a bridge portion extends from the cylinder so as to straddle the disk rotor, and a claw portion is formed at a tip of the bridge portion to support the outer pad. At the time of braking, the claw portion of the cylinder and the piston move so as to approach each other, whereby the disk rotor is sandwiched between the inner pad and the outer pad to apply a braking force to the disk rotor.

In such a conventional pin-sliding type disk brake device, the cylinder is slidably supported by the slide pin as described above. In order to prevent foreign matters such as dust and water from entering and damage caused by flying stones, a disc brake device having a rubber boot and a protector has been proposed (Japanese Patent Application Laid-Open No. 58-99526).

In the disc brake device disclosed in the above publication, a cylinder support portion (support hole) using a slide pin is provided.
Is equipped with rubber boots and protectors,
It covers the support hole and the tip of the slide pin protruding from the support hole. The rubber boot and the protector not only absorb the dimensional tolerance, but also prevent foreign substances such as dust and water from entering the support portion, and also prevent damage due to flying stones and the like.

However, in the disc brake device, a rubber boot or a protector extends from one opening side of the support hole to the other opening side (in other words, over the entire area between the slide pin and the support hole). Rubber boot or protector interposed)
The sliding resistance when the cylinder slides is extremely large, which may adversely affect the operation of the disc brake. Also, when a large load is applied, the rubber boot or protector may be crushed,
It was difficult to maintain the original performance. In addition, since the rubber boot or the protector having a large sliding resistance as described above is extended from one opening side of the support hole to the other opening side, the assembling work is complicated and the number of steps is increased.

[0007]

SUMMARY OF THE INVENTION In consideration of the above fact, the present invention can ensure smooth sliding movement of a cylinder while reliably preventing foreign matter from entering a supporting portion of the cylinder.
Another object of the present invention is to provide a disc brake device in which assemblability is greatly improved.

[0008]

According to a first aspect of the present invention, there is provided a disk brake device, comprising: a cylinder disposed to face a disk rotor and having a support hole formed in the axial direction of the disk rotor; A slide pin fixed to the mounting correspondingly, wherein the slide pin is slidably penetrated through the support hole so that the cylinder is formed in a bottomed cylindrical shape in the disc brake device supported by the mounting. An opening closing member, which has rigidity and covers one end of the slide pin that penetrates the support hole and closes the support hole and one end of which is fixed to the peripheral edge of the support hole; A rubber boot formed and elastic and fixed to the inner peripheral edge of the opening closing member at the one end opening side; When Ru is assembled on the inner circumferential side of the boot
A holding portion for holding the rubber boot is provided , and a sliding member that comes into contact with the slide pin is provided, and the sliding member is assembled to the rubber boot fixed to the opening closing member to form a pin covering member assembly, It is characterized in that the pin covering member assembly is integrally press-fitted into a peripheral portion of a support hole of the cylinder.

According to a second aspect of the present invention, there is provided a disk brake device according to the first aspect.
The slide pin is press-fitted and fixed to the mounting .

A third aspect of the present invention provides the disk brake device, wherein the disk brake device is disposed so as to face a disk rotor.
A cylinder having a support hole formed along the rotor axis direction;
A slide fixed to the mounting corresponding to the support hole
And the slide pin is provided in the support hole.
The cylinder slides forward by sliding through
For disc brake devices supported by the mounting
The support is formed in a cylindrical shape with a bottom and has rigidity.
The tip of the slide pin penetrating the hole is covered and
In the state where the holding hole is closed, one end opening side is at the peripheral edge of the support hole.
Opening closing member to be fixed, formed in a ring shape, elastic
At the inner peripheral edge of the one end opening side of the opening closing member.
A rubber boot to be fixed and a ring-shaped
To the slide pin.
A sliding member that contacts the slide pin,
Press-fit into the mounting and fix the opening
Assembling the sliding member to the rubber boot fixed to the material
A pin covering member assembly, and
The member assembly is integrated with the periphery of the support hole of the cylinder.
It is characterized by being press-fitted .

[0011]

In the disk brake device according to the first aspect, the cylinder is supported by a slide pin fixed to the mounting. Further, a sliding member is assembled to a rubber boot fixed to the opening closing member to form a pin covering member assembly, and the pin covering member assembly is integrally press-fitted into a peripheral portion of the support hole of the cylinder. Thereby, the tip of the slide pin penetrating the support hole of the cylinder is covered with the opening closing member and the support hole is closed, and the sliding member assembled on the inner peripheral side of the rubber boot is brought into contact with the slide pin. . Therefore, intrusion of foreign matter into the support portion (in the support hole) of the cylinder is reliably prevented.

When the cylinder slides,
Since the sliding member slides on the slide pin, the sliding resistance is greatly reduced as compared with the related art, and smooth sliding movement is secured without hindering the sliding movement of the cylinder.

Further, a pin covering member assembly is constituted by the opening closing member, the rubber boot and the sliding member,
Since this pin covering member assembly is integrally press-fitted into the periphery of the support hole of the cylinder and assembled, the workability of the assembly is greatly improved.

Further, since the sliding member is provided with a holding portion for holding the rubber boot, the assembling work when assembling the sliding member to the inner peripheral side of the rubber boot, and the pin covering member assembly to the cylinder support hole. The assembling work at the time of press-fitting integrally into the peripheral portion is further facilitated, and the assembling property is further improved. Further, the displacement of the sliding member during the operation of the brake (that is, during the sliding movement of the cylinder) is also prevented. On the other hand, the disk drive according to claim 2
In rake equipment, slide pins are pressed into the mounting
Because it is fixed, for example, a screw groove
Compared to the conventional structure where the mounting is screwed into the mounting
Greatly improve the ease of assembly and reduce manufacturing costs.
Can be

In the disk brake device according to the third aspect, the cylinder is a slide pipe fixed to the mounting.
Supported by Furthermore, it is fixed to the opening closing member.
Attach the sliding member to the rubber boot
The pin covering member assembly
Is press-fitted integrally into the peripheral edge of the support hole of the cylinder. this
The tip of the slide pin that passes through the support hole of the cylinder
The end is covered with an opening closing member and the support hole is
Sliding part closed and assembled on the inner peripheral side of the rubber boot
The material is brought into contact with the slide pin. For this reason,
Foreign matter is reliably prevented from entering the support part (in the support hole) of the
Is stopped. Also, when sliding the cylinder,
The moving member slides on the slide pin.
Sliding resistance is reduced, and cylinder sliding movement is hindered.
Smooth sliding movement is ensured
You. Furthermore, for opening closing members, rubber boots and sliding members
Therefore, a pin covering member assembly is formed, and this pin
Coating member assembly is integrated with the periphery of cylinder support hole
Dramatically press-fitted for significant workability
Is improved. Further, since the slide pin is press-fitted and fixed to the mounting, the assemblability is greatly improved and the manufacturing cost is significantly improved as compared with a conventional structure in which a screw groove or the like is formed and the slide pin is screwed and fixed to the mounting. Can also be reduced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first embodiment of the present invention will be described with reference to FIGS.
An embodiment will be described.

Disc brake device 1 according to the first embodiment
0, the inner mounting 12 is provided on the inner side of the vehicle in opposition to a disk rotor (not shown) rotating with the wheels.
Is arranged. The inner mounting 12 is arranged in parallel with the disk rotor, and is fixed to the vehicle body.

A pair of slide pins 14 are integrally fixed to the inner mounting 12 (FIG. 1).
, Only one of them is shown). The slide pin 14 is provided orthogonally from the inner mounting 12 to the inside of the vehicle, and is fixed by friction welding.

On the other hand, a cylinder 16 is disposed on the inner side of the inner mounting 12 in the vehicle. Cylinder 16
A support hole 18 is formed at the tip of the support hole corresponding to the slide pin 14 fixed to the inner mounting 12. The slide pin 14 enters the support hole 18 with a predetermined clearance, so that the cylinder 16 can move along the axial direction of the slide pin 14 (the direction in which the slide pin 14 comes into contact with or separates from the disk rotor), and It is configured to be held so as to be able to move slightly in the direction orthogonal to.

The cylinder 16 is provided with an inner pad and a piston movably inserted in opposition to the inner pad, and an outer pad provided with a disk rotor sandwiched therebetween (both not shown). At the time of the brake operation, the piston is moved in the direction of the disk rotor to press the inner pad, and the inner pad is pressed against the disk rotor to generate braking torque. The outer pad is moved along the slide pin 14 in a direction away from the disk pad, the outer pad is pressed in the direction of the disk rotor, and the outer pad is pressed against the disk rotor to generate a braking torque.

As described above, the disk brake device 10 according to the first embodiment is of a so-called pin slide type (piston floating type).

Further, a metal cap 20 as an opening closing member is fixed to a peripheral portion of the opening on the vehicle inner side of the support hole 18 through which the slide pin 14 for supporting the cylinder 16 passes. The metal cap 20 is formed in a bottomed cylindrical shape and has rigidity. The metal cap 20 covers the distal end of the slide pin 14 penetrating the support hole 18 and closes the opening of the support hole 18 on the vehicle inside side. One end opening side is press-fitted and fixed to a peripheral portion of the support hole 18. A rubber boot 22 is fixed to an inner peripheral edge of the metal cap 20 on one end opening side. The rubber boot 22 is formed in a ring shape and has elasticity, and is integrally fixed to an inner peripheral edge of the metal cap 20 on one end opening side by, for example, bonding. further,
On the inner peripheral side of the rubber boot 22, a teflo as a sliding member is provided.
(Dupont's trade name:
Teflon ring 24 ( using wording) is assembled. The Teflon ring 24 is a sliding material having a low friction coefficient, and is formed in a thin ring shape as shown in detail in FIGS. 2 and 3, and a slit 25 is formed in a part of the periphery. Further, a flange portion 26 is formed at one axial end of the Teflon ring 24 so as to protrude outward in the radial direction. At the other end of the Teflon ring 24 in the axial direction, a holding portion 28 extending parallel to the flange portion 26 is formed. The Teflon ring 24 has a flange 26 positioned on the cylinder 16 side (rear side of the support hole 18) and the rubber boot 22.
, So that the Teflon ring 24 is in contact with the slide pin 14.

The metal cap 20 and the rubber boot 22 are integrally formed in advance, and a Teflon ring 24 is attached to the inner peripheral side of the rubber boot 22, thereby forming a pin covering member assembly 30. Have been.

On the other hand, a bracket plate 32 is fixed to a peripheral portion of an opening on the vehicle outer side of the support hole 18 through which the slide pin 14 for supporting the cylinder 16 passes. The fitting plate 32 is formed in a substantially cylindrical shape and has rigidity.
A flange portion 34 that is bent outward in the radial direction is provided at the one end opening side.
Are formed. The metal plate 32 has a flange 34
Are located outside the support hole 18, and the outer peripheral surface is press-fitted and fixed to the periphery of the support hole 18. The metal plate 32
A rubber boot 36 is fixed to the inner peripheral edge of. The rubber boot 36 is formed in a ring shape and a bellows-like covering portion 38 is integrally extended therefrom, and is integrally fixed to the inner peripheral edge of the metal plate 32 by, for example, bonding. Further, a Teflon ring 40 similar to the Teflon ring 24 is attached to the inner peripheral side of the rubber boot 36. Thereby, the Teflon ring 40 is configured to contact the slide pin 14.

Here, the metal plate 32 described above is used.
The rubber boot 36 is formed in advance as an integrally molded product. Further, a Teflon ring 40 is attached to the inner peripheral side of the rubber boot 36, and a pin covering member assembly 42 is formed by these components.

In the assembled state of the components, the rubber boots 22 and 36 are formed so that no gap is formed between the Teflon ring 24 and the slide pin 14 and between the Teflon ring 40 and the slide pin 14. The thickness and the like are set, and the dimensions and the like of each part are set so that a predetermined gap is formed between the inner peripheral wall of the support hole 18 and the slide pin 14.

Next, the operation of the first embodiment will be described.
Will be described together with the procedure when assembling to the slide pin 14.

In the disk brake device 10 having the above-described structure, the metal cap 20 and the rubber boot 22 are formed as an integrally molded product in advance, and the Teflon ring 24 is assembled on the inner peripheral side of the rubber boot 22 to form the pin covering member assembly 30. . The metal plate 32 and the rubber boot 36 are previously formed as an integrally molded product, and the Teflon ring 40 is assembled on the inner peripheral side of the rubber boot 36 to form the pin covering member assembly 42.

Next, the pin covering member assembly 3
0 (the one end opening side of the metal cap 20)
Is press-fitted into the periphery of the opening on the vehicle inner side of the support hole 18 and fixed. Further, the pin covering member assembly 42 (the metal plate 32) is press-fitted into the peripheral portion of the support hole 18 on the outer side of the vehicle to be fixed.

After the pin covering member assembly 30 and the pin covering member assembly 42 are assembled to the cylinder 16 (opening portions at both ends of the support hole 18), the slide pin 14 is passed through the support hole 18 while maintaining this state. Further, the distal end locking portion 39 of the covering portion 38 of the rubber boot 36 is fitted into the locking groove 15 of the slide pin 14, and the assembly is completed.

Thus, the cylinder 16 is supported by the slide pin 14 fixed to the inner mounting 12. Further, the tip of the slide pin 14 penetrating the support hole 18 of the cylinder 16 is covered with a metal cap 20 and one end of the support hole 18 is closed.
The Teflon ring 24 is brought into contact with the slide pin 14. Furthermore, the slide pin 14 penetrating the support hole 18
Is covered with a metal plate 32 and a rubber boot 36, and the other end opening of the support hole 18 is closed.
The Teflon ring 40 is brought into contact with the slide pin 14.

At the time of brake operation, the cylinder 16 itself is moved along the slide pin 14 in a direction away from the disk rotor to generate a braking torque.

In this case, when the cylinder 16 slides, the Teflon ring 24 and the Teflon ring 40 slide with the slide pin 14, so that the sliding resistance is greatly reduced as compared with the conventional case, and the cylinder 16 slides. And smooth slide movement is ensured without being hindered. In addition, the Teflon ring 24 and the Teflon ring 40
Is provided with a holding portion 28 for holding the rubber boot 22 and the rubber boot 36. The Teflon ring 24 and the Teflon ring 40 are securely held by the holding portion 28, so that the brake 16 is operated when the cylinder 16 slides. ), The misalignment of the Teflon ring 24 and the Teflon ring 40 is also prevented.

The metal cap 20 and the metal plate 32 are press-fitted into the peripheral portion of the opening of the support hole 18, and the rubber boots 22 and 36 have their inner side surfaces pressed against the cylinder 16.
The intrusion of foreign matter into the support portion (in the support hole 18) is reliably prevented.

The cylinder 16 (metal cap 20)
A rubber boot 22 is interposed between the slide pin 14 and the slide pin 14 (Teflon ring 24).
Since the rubber boot 36 is interposed between the (metal plate 32) and the slide pin 14 (Teflon ring 40), the cylinder 16 does not rattle due to the elastic resistance of the rubber boot 22 and the rubber boot 36, thereby generating abnormal noise. Is also prevented.

Further, when a large load acts on the cylinder 16 and the rubber boots 22 and 36 are largely elastically deformed, the inner peripheral wall of the support hole 18 directly contacts the slide pin 14 to transmit the load. Therefore, an unnecessarily large load is applied to the Teflon ring 24 and the Teflon ring 40.
The Teflon ring 24 and the Teflon ring 40 are prevented from being deformed.

Further, the metal cap 20, the rubber boot 22, and the Teflon ring 24 constitute a pin covering member assembly 30. Further, a pin covering member assembly 42 is constituted by the metal plate 32, the rubber boot 36, and the Teflon ring 40, and the pin covering member assembly 30 and the pin covering member assembly 42 are provided.
Are integrally press-fitted into the periphery of the support hole 18 of the cylinder 16 and assembled, so that the assembling workability is greatly improved.

In this case, the rubber boot 22 and the rubber boot 3 are attached to the Teflon ring 24 and the Teflon ring 40.
6 is provided, the Teflon ring 24 and the Teflon ring 40 are assembled on the inner peripheral side of the rubber boot 22 or the rubber boot 36 to form the pin covering member assembly 30 and the pin covering member assembly 42. The assembling work is further facilitated, and the assembling work when the pin covering member assembly 30 and the pin covering member assembly 42 are integrally press-fitted into the peripheral portion of the support hole 18 of the cylinder 16 is further facilitated. The attachment property is further improved.

Next, another embodiment of the present invention will be described. It should be noted that the same parts as those of the first embodiment
The same reference numerals as in the embodiment are given and the description is omitted.

FIG. 4 shows a disc brake device 50 according to a second embodiment. In this disc brake device 50, the inner mounting 12 is provided with a slide pin 5
2 are integrally fixed. A flange portion 54 is formed on the slide pin 52, and the flange portion 54 is press-fitted so as to be in contact with the inner mounting 12 and is welded and fixed at a welding portion 56.

In the disc brake device 50, the metal cap 58 as the opening closing member, the rubber boot 6
The pin covering member assembly 64 is constituted by the Teflon ring 62 as a sliding member and the metal member plate 66, the rubber boot 68, and the Teflon ring 70 constitute a pin covering member assembly 72.

The fitting cap 58 has a fitting portion 74 formed by expanding the diameter at one end opening side. The fitting portion 74 is press-fitted into a peripheral portion of the support hole 18 on the outer side of the vehicle and fixed. The rubber boot 60 enters and is held by the fitting portion 74. Also, on the inner peripheral side of the rubber boot 60,
A Teflon ring 62 as a sliding member is assembled. The Teflon ring 62 has a
The rubber boot 60 is mounted on the inner side of the rubber boot 60 so as not to be displaced by the cylinder 16 and the rubber boot 60.

On the other hand, the metal fitting plate 66 is formed in a substantially cylindrical shape and has rigidity, and a flange portion 78 that is bent inward in the radial direction is formed at one end opening side. In the metal fitting plate 66, the flange 78 is located outside the support hole 18, the outer peripheral surface is press-fitted and fixed to the peripheral edge of the support hole 18, and the rubber boot 68 enters between the flange 78 and the cylinder 16. Is held in. A Teflon ring 70 similar to the Teflon ring 62 is attached to the inner peripheral side of the rubber boot 68.

In the disc brake device 50 having the above-described structure, the rubber boot 60 is mounted on the fitting portion 74 of the metal cap 58, and the Teflon ring 62 is mounted on the inner peripheral side of the rubber boot 60.
Is configured. Also, rubber boots 68 are provided on the metal plate 66.
As well as a Teflon ring 70 on the inner peripheral side of the rubber boot 68 to attach the pin covering member assembly 7.
Constituting No. 2.

Next, this pin covering member assembly 6
4 (the fitting portion 74 of the metal cap 58) is
Is press-fitted into the periphery of the opening on the vehicle inner side of the support hole 18 and fixed. Further, the pin covering member assembly 72 (the metal plate 66) is press-fitted into the peripheral portion of the support hole 18 on the outer side of the vehicle to be fixed.

The metal cap 58 and the rubber boot 6
Alternatively, the Teflon ring 62 and the Teflon ring 70 may be respectively assembled after press fitting the metal plate 66 and the rubber boot 68 into the support holes 18 of the cylinder 16 and fixing them.

After the pin covering member assembly 64 and the pin covering member assembly 72 are assembled to the cylinder 16 (opening portions at both ends of the support hole 18), the slide pins 52 are passed through the support hole 18 while maintaining this state. Further, the distal end locking portion 81 of the covering portion 80 of the rubber boot 68 is fitted into the locking groove 53 of the slide pin 52, and the assembly is completed.

Thus, the cylinder 16 is supported by the slide pins 52 fixed to the inner mounting 12. The tip of the slide pin 52 penetrating through the support hole 18 of the cylinder 16 is covered with a metal cap 58, and one end of the support hole 18 is closed.
The Teflon ring 62 is brought into contact with the slide pin 52. Further, a slide pin 52 penetrating the support hole 18 is provided.
Is covered with a metal plate 66 and a rubber boot 68, and the other end of the support hole 18 is closed.
The Teflon ring 70 is brought into contact with the slide pin 52.

At the time of the brake operation, the cylinder 16 itself is moved along the slide pin 52 in a direction away from the disk rotor to generate a braking torque.

In this case, when the cylinder 16 slides, the Teflon ring 62 and the Teflon ring 70 slide with the slide pin 52, so that the sliding resistance is greatly reduced as compared with the conventional case, and the cylinder 16 slides. And smooth slide movement is ensured without being hindered.

The metal cap 58 and the metal plate 66 are press-fitted into the peripheral portion of the opening of the support hole 18, and the rubber boots 60 and 68 have their inner side surfaces pressed against the cylinder 16.
The intrusion of foreign matter into the support portion (in the support hole 18) is reliably prevented.

The cylinder 16 (the metal cap 58)
A rubber boot 60 is interposed between the slider 16 and the slide pin 52 (Teflon ring 62).
Since the rubber boot 68 is interposed between the (metal plate 66) and the slide pin 52 (Teflon ring 70), the cylinder 16 does not rattle due to the elastic resistance of the rubber boot 60 and the rubber boot 68, thereby generating abnormal noise. Is also prevented.

Further, when a large load acts on the cylinder 16 and the rubber boots 60 and 68 are greatly elastically deformed, the inner peripheral wall of the support hole 18 directly contacts the slide pin 52 to transmit the load. Therefore, an unnecessarily large load is applied to the Teflon ring 62 and the Teflon ring 70.
The Teflon ring 62 and the Teflon ring 70 are prevented from being deformed.

Further, a pin covering member assembly 64 is constituted by the metal cap 58, the rubber boot 60, and the Teflon ring 62. The metal plate 66, the rubber boot 68, and the Teflon ring 70 constitute a pin covering member assembly 72. The pin covering member assembly 64 and the pin covering member assembly 72 are provided.
Are integrally press-fitted into the periphery of the support hole 18 of the cylinder 16 and assembled, so that the assembling workability is greatly improved.

In this case, the metal cap 58 and the rubber boot 60 are formed independently of each other, and the metal plate 66 and the rubber boot 68 are formed independently of each other (in other words, the first embodiment described above). ), The cost is reduced.

In the disc brake device 50, since the slide pin 52 is press-fitted and fixed to the inner mounting 12, for example, a screw groove or the like is formed and the slide pin 52 is screwed and fixed to the inner mounting 12 in a conventional structure. Compared with this, the assemblability is greatly improved, and the manufacturing cost can be reduced.

In the first embodiment, the slide pin 14 is fixed to the inner mounting 12 by resistance welding. In the second embodiment, the slide pin 52 is fixed to the inner mounting 12 by press-fitting and welding. However, the present invention is not limited to such a configuration in which the fixing is performed by welding, and the fixing may be performed by other means.

For example, as shown in FIG. 5 and FIG. 6, a configuration may be adopted in which the set pin 92 is used to fix the inner mounting 12 using a set spring 92. A locking groove 94 is formed at the tip of the slide pin 90, and the locking groove 94 is exposed to the outside from the side surface of the inner mounting 12. The set spring 92 is plate-shaped and elastic, and has a U-shaped notch 96.
Are formed. By fitting the notch 96 of the set spring 92 into the locking groove 94, it is possible to prevent the slide pin 90 from rattling and coming off and fix the slide pin 90. Therefore, the cost is further reduced as compared with the configuration in which the fixing is performed by welding.

[0059]

As described above, the present invention has the following effects.

In the disk brake device according to the first aspect, the intrusion of foreign matter into the support portion (in the support hole) of the cylinder is reliably prevented, and the sliding resistance of the cylinder is greatly reduced as compared with the conventional case, so that the cylinder slides. Smooth slide movement is ensured without hindrance, and the assembling workability is greatly improved.

In the disk brake device according to the second aspect, the assembling work when assembling the sliding member on the inner peripheral side of the rubber boot and the assembling work when press-fitting the pin covering member assembly into the peripheral edge of the support hole of the cylinder integrally. The assembling work is further facilitated, and the assembling property is further improved. Further, the displacement of the sliding member during the operation of the brake (that is, during the sliding movement of the cylinder) is also prevented.

In the disk brake device according to the third aspect, as compared with the conventional structure in which a screw groove or the like is formed and the slide pin is screwed to the mounting, the assemblability is greatly improved and the manufacturing cost is reduced. Can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a main part of a disc brake device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a Teflon ring of the disc brake device according to the first embodiment of the present invention.

FIG. 3 is a plan view of a Teflon ring of the disc brake device according to the first embodiment of the present invention.

FIG. 4 is a sectional view showing a configuration of a main part of a disc brake device according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing a configuration of a main part of a disc brake device according to a third embodiment of the present invention.

FIG. 6 is a perspective view of a set spring of a disc brake device according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Disc brake device 12 Inner mounting 14 Slide pin 16 Cylinder 18 Support hole 20 Metal cap (opening closing member) 22 Rubber boot 24 Teflon ring (sliding member) 28 Holding part 30 Pin covering member assembly 32 Metal plate 36 Rubber boot 40 Teflon ring 42 pin Covering member assembly 50 Disc brake device 52 Slide pin 58 Fitting cap (opening closing member) 60 Rubber boot 62 Teflon ring (Sliding member) 64 Pin covering member assembly 66 Fitting plate 68 Rubber boot 70 Teflon ring 72 Pin covering member assembly

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-313453 (JP, A) JP-A-6-17857 (JP, A) JP-A-61-24838 (JP, A) JP-A-58-1983 99526 (JP, A) JP-A-57-12131 (JP, A) JP-A-3-282025 (JP, A) JP-A-4-50734 (JP, U) JP-A-57-139739 (JP, U) Hikaru 1-152120 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16D 55/224 111 F16D 65/02

Claims (3)

(57) [Claims] A cylinder having a support hole formed along the axial direction of the disk rotor, the slide pin being fixed to a mounting corresponding to the support hole; In a disc brake device in which the cylinder is supported by the mounting by a slide pin slidably penetrating the support hole, the slide pin is formed in a bottomed cylindrical shape, has rigidity, and penetrates the support hole. An opening closing member whose one end opening side is fixed to the peripheral edge of the supporting hole in a state of covering the front end portion of the supporting hole and closing the supporting hole; and a ring-shaped, elastic, one end opening of the opening closing member. holding a rubber boot which is fixed to the inner periphery side, is formed in a ring shape, a Rutotomoni the rubber boot is assembled to the inner peripheral side of the rubber boot Holding part is provided
Is the a sliding piece in contact with the slide pin, provided with, by assembling the slide member in a fixed the rubber boot on the opening closure member constitutes a pin cover member assembly, supporting said pin cover member assembly of the cylinder A disc brake device characterized by being integrally press-fitted into a peripheral portion of a hole. 2. The mounting of the slide pin to the mounting
2. The disc brake device according to claim 1, wherein the disc brake device is press-fitted and fixed to the disc brake device. 3. The apparatus according to claim 2, wherein said first and second disk rotors are arranged to face each other.
A series of holes with support holes formed along the disk rotor axis
And the mounting holes corresponding to the support holes.
And a slide pin, wherein the slide pin is
The series is slidably penetrated into the support hole to
A disk brake supported by the mounting
In the key device, it is formed in a bottomed cylindrical shape, has rigidity, and penetrates the support hole.
Cover the tip of the slide pin and close the support hole.
In the closed state, one end opening side is fixed to the peripheral edge of the support hole.
Opening and closing member , formed in a ring shape, having elasticity,
A rubber boot to be secured to the inner peripheral edge of the one end opening side is formed in a ring shape, assembling the inner peripheral side of the rubber boot
A sliding member that contacts the slide pin, and press-fits the slide pin into the mounting.
While securing it,
Attach the sliding member to
An assembly, and the pin covering member assembly is
A disc brake device characterized by being integrally press-fitted into a peripheral portion of a support hole of the cylinder .