JPH09250576A - Disc braking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of dragging and uneven abrasion between an outer pad and a disc rotor in regard to the caliper floating type disc braking device. SOLUTION: In this disc braking device, a caliper 13 where an inner pad 14 capable of being moved at the time of braking and a fixed outer pad 15 are so disposed as to hold a rotor 11, is so constituted as to be capable of being slid with respect to a mounting 20 by engaging a main pin 21 and a sub pin 22 with a main pin hole 17 and a sub pin hole 18. And in order to let the caliper 13 be tilted when the disc braking device is out of operation, the main pin 21 (the main pin hole 17 may be good as well) is so formed as to be tilted, the occurrence of dragging is thereby prevented by separating the outer pad 15 from the rotor 11 with the caliper 13 tilted.

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, and more particularly to a caliper floating type disc brake device.

[0002]

2. Description of the Related Art Conventionally, a caliper floating disc brake device has been known as a vehicle brake device. This caliper floating disc brake device has a piston having a piston on only one side of the disc rotor, and the caliper is supported by the mounting in a floating state. An example of this type of disc brake device is disclosed in Japanese Utility Model Laid-Open No. 2-60727.

FIG. 18 shows a disc brake device disclosed in the publication. In the figure, reference numeral 1 denotes a disk rotor, which is configured to rotate integrally with a wheel. Reference numeral 2 denotes a caliper of the disc brake device, which is arranged so as to straddle the disc rotor 1. An inner pad 3 and an outer pad 4 are arranged inside the caliper 2, and the pads 3 and 4 are arranged so as to sandwich the disc rotor 1.

The caliper 2 is internally provided with a pressurizing mechanism 5 composed of a piston and a cylinder, and the inner pad 3 is integrally attached to the piston. The outer pad 4 is fixed to the caliper 2. Further, a slide pin hole 6 is formed in the caliper 2, and the slide pin hole 6 is slidably inserted into a slide pin 8 planted in a mounting 7 (fixed to a vehicle frame or the like). .

Therefore, when the hydraulic pressure is introduced into the cylinder of the pressurizing mechanism 5 by the brake operation, the piston moves, and the inner pad 3 is pressed against the disk rotor 1 as the piston moves. Further, since the slide pin hole 6 and the slide pin 8 are slidable as described above, the caliper 2 is moved by the reaction force of the inner pad 3 in pressure contact with the disc rotor 1, and the outer pad 4 is also disc-shaped. Press contact with the rotor 1.

The disc brake device is configured to generate a braking force by performing the above operation. Further, when the brake is released, the piston is retracted due to the decrease of the hydraulic pressure of the cylinder, whereby the inner pad 3 and the outer pad 4 are separated from the disc rotor 1, and the brake is released.

When the center of gravity of the caliper 2 is indicated by G in the figure, the center of gravity G of the caliper 2 is at a position where the caliper 2 is supported by the mounting 7 (that is, the engagement between the slide pin hole 6 and the slide pin 8). Since it is more offset than the position, a moment (rotational force) indicated by an arrow M in the figure is generated in the caliper 2 when the brake is not applied.

Therefore, when the caliper 2 rotates and tilts due to this moment during non-braking, the outer pad 4 provided inside the caliper 2 interferes with and contacts the disk rotor 1 to generate drag torque. Therefore, in the disc brake device disclosed in the above publication, the caliper 2
A spring 9 is arranged between the mounting portion 7 and the mounting 7 to prevent the caliper 2 from tilting due to its own weight. With this configuration, the outer pad 4 is parallel to the disc rotor 1 during non-braking, and drag torque can be prevented from being generated.

[0009]

However, in the conventional disc brake device shown in FIG. 18, the action of the spring 9 prevents the caliper 2 from tilting due to its own weight, thereby generating a drag torque. Although the outer pad 4 cannot be separated from the disc rotor 1 by simply preventing the caliper 2 from tilting, the outer pad 4 and the disc rotor 1 may be separated from each other due to the shake of the disc rotor 1 or the like. There is a risk of contact. Therefore, even if the spring 9 is provided as described above, contact between the outer pad 4 and the disc rotor 1 cannot be reliably prevented, and drag torque is generated between the outer pad 4 and the disc rotor 1. There was a problem.

The present invention has been made in view of the above points, and it is an object of the present invention to prevent the occurrence of drag between the outer pad and the disk rotor by specifying the caliper tilting viewpoint at the time of non-braking. .

[0011]

The above objects can be attained by taking the following means. Claim 1
In the described invention, in a disc brake device in which a caliper, which is arranged so as to sandwich a rotor between an inner pad that moves during braking and a fixed outer pad, is configured to be slidable with respect to a mounting by a slide pin and a slide pin hole. When not braking, the caliper is configured to tilt about a slide pin or a slide pin hole in a tilting direction, and the outer pad is separated from the rotor by tilting the caliper. is there.

According to a second aspect of the present invention, in the disc brake device according to the first aspect, the slide pin and the slide pin hole on the side serving as a tilt fulcrum of the caliper are tilted so that the caliper tilts during non-braking. It is characterized in that at least one of the above is inclined.

According to a third aspect of the present invention, in the disc brake device according to the first aspect, the slide pin and the slide pin hole on the side serving as the tilt fulcrum of the caliper are tilted so that the caliper tilts during non-braking. It is characterized in that a gap is provided between and.

Further, the invention according to claim 4 is characterized in that, in the disc brake device according to claim 2 or 3, biasing means for biasing the caliper in one direction is provided. is there.

The above-mentioned means operate as follows.
According to the invention described in claim 1, since the caliper is tilted about the slide pin or the slide pin hole in the tilting direction of the caliper as a fulcrum during non-braking, the tilt amount of the caliper can be increased. . Therefore, the outer pad can be largely separated from the rotor. Further, since the outer pad is fixed to the caliper, the movement amount of the outer pad correlates with the tilt amount of the caliper.

Therefore, as the amount of tilt of the caliper increases, the amount of movement of the outer pad fixed to the caliper also increases, so that the outer pad can be further separated from the rotor. As a result, the outer pad can be reliably separated from the rotor during non-braking, and the occurrence of drag can be prevented as much as possible.

According to the second aspect of the present invention, at least one of the slide pin and the slide pin hole is tilted so that the caliper positively tilts when the brake is not applied. The caliper can be tilted more than the configuration in which the hole is not tilted.

Therefore, the amount of tilting of the caliper increases as in the case of the first aspect of the invention, and the amount of movement of the outer pad fixed to the caliper also increases accordingly. Therefore, the outer pad can be further separated from the rotor. It will be possible. As a result, the outer pad can be reliably separated from the rotor during non-braking, and the occurrence of drag can be prevented as much as possible.

According to the third aspect of the invention, a gap is provided between the slide pin and the slide pin hole, and the caliper is positively tilted during non-braking. Similarly, the amount of tilt of the caliper increases, and the amount of movement of the outer pad fixed to the caliper also increases accordingly. Therefore, the outer pad can be further separated from the rotor. This allows
The outer pad can be reliably separated from the rotor during non-braking, and the occurrence of drag can be prevented as much as possible.

Further, since only the gap is adjusted between the slide pin and the slide pin hole, it is not necessary to take special measures such as providing the slide pin and the slide pin hole with an inclination, and the manufacturing cost is reduced. Can be reduced. Further, according to the invention as set forth in claim 4, since the urging means urges the caliper to tilt in only one direction, the movement of the caliper is regulated by this urging force during non-braking. Therefore, the rattling of the caliper during non-braking can be suppressed as much as possible.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a disc brake device 10 which is a first embodiment of the present invention. In the figure, reference numeral 11 denotes a disk rotor (hereinafter referred to as a rotor), which is configured to rotate integrally with a wheel 12 (see FIG. 2). Further, 13 is a caliper, which is arranged so as to straddle the rotor 11. This caliper 13
Inside the inner pad 14 and the outer pad 1
5 are arranged so as to sandwich the rotor 11.

A piston 16 is slidably provided inside the caliper 13. This piston 16
It is configured to slide in the caliper 13 by the oil liquid supplied when the driver depresses a brake pedal (not shown). The inner pad 14 is attached to the piston 16, and thus the inner pad 1
4 is configured to move within the caliper 13 as the piston 16 slides. The outer pad 15 is fixed to the caliper 13.

Further, the caliper 13 is provided with a main pin hole 17 and a sub pin hole 18 which are the above-mentioned slide pin holes and are spaced from each other. In this embodiment, a main pin hole 17 is provided below the vertical direction, and a sub pin hole 18 is provided above the vertical direction. In addition, the vehicle 19 has a mounting 20
The mounting pin 20 is fixedly mounted on the mounting 20.
Are spaced apart. The main pin 21 is arranged below in the vertical direction, and the sub pin 22 is arranged below.

The main pin 21 has a main pin hole 17
The sub pin 22 is slidably inserted into the sub pin hole 18. At this time, the clearance formed between the main pin 21 and the main pin hole 17 is set small, and a sufficiently large clearance is formed between the sub pin 22 and the sub pin hole 18. . As a result, the caliper 13 is supported by the mounting 20 in a floating state.

Further, the main pin 21 and the sub-pin 22 are constructed so as to extend in the mounting 20 in the direction away from the rotor 11 (rightward in the figure), so that the disc brake device 10 is a so-called reverse pin type disc. It has a brake structure.

FIG. 2 shows the mounting position of the disc brake device 10 in this embodiment. In the present embodiment, the disc brake device 10 is mounted at the wheel rear position with respect to the traveling direction of the vehicle 19. Therefore, the rotor 11 rotates in the direction indicated by the arrow in FIG. 1 (direction from the main pin 21 toward the sub pin 22). Further, the force with which the pads 14 and 15 are pulled by the rotor 11 during braking (hereinafter referred to as the pulling force F) also acts in the same direction as the rotation direction of the rotor 11 (the pulling force F is indicated by an arrow in FIG. Shown).

Here, paying attention to the above-mentioned main pin 21, the disc brake device 10 according to the present embodiment has a structure in which the main pin 21 is inclined by an angle θ (hereinafter referred to as an inclination angle θ) with respect to the horizontal direction. Has been done. The tilting direction of the main pin 21 is upward (rotor rotating direction) with respect to the horizontal direction. On the other hand, sub pin 2
2, the main pin hole 17 and the sub pin hole 18 are not provided with an inclination and are configured to extend in the horizontal direction.

Next, the operation of the disc brake device 10 having the above structure will be described with reference to FIGS. 3A shows the disc brake device 10 during braking, and FIG. 3B shows the disc brake device 10 during non-braking. Further, FIG. 4 shows, as a comparative example, a disc brake device 25 in which the main pin 21 is not tilted in order to clarify the operation of the disc brake device 10 according to the present embodiment. 4A shows the disc brake device 25 during braking, and FIG. 4B shows the disc brake device 25 during non-braking. Incidentally, in FIG. 4, the same reference numerals are given to the configurations corresponding to those shown in FIG.

First, the operation of the disc brake device 10 during braking will be described with reference to FIG. When the hydraulic pressure is introduced into the caliper 13 by the brake operation, the piston 16 slides in the direction approaching the rotor 11, and the inner pad 14 is brought into pressure contact with the rotor 11 as the piston 16 moves. In addition, as described above, the main pin hole 1
7, main pin 21, sub-pin hole 18, sub-pin 22
Are relatively slidable, the caliper 13 moves due to the reaction force of the inner pad 14 pressing against the rotor 11, and therefore the outer pad 15 also moves.
Press against. As a result, the inner pad 14 and the outer pad 15 both slidably contact the rotor 11 in a substantially parallel state, whereby a braking force is generated.

Here, paying attention to the main pin 21 during braking, since the main pin 21 has the inclination angle θ in the rotor rotation direction as described above, the main pin 21 is indicated by reference numeral 23 in the figure. It engages with the main pin hole 17 at the marked position. That is, the main pin 21 is the main pin hole 1
7 is in a state of being engaged with an end portion of the rotor 7 close to the rotor 11.

On the other hand, in the disc brake device 25 having the main pin 26 having no inclination angle,
As shown in (A), the entire lower surface of the main pin 26 is engaged with the main pin hole 17 during braking. By the way, as described above, the tensile force F acts on the pads 14 and 15 during braking, and the caliper 1
Since the support point of 3 (the engagement point of the main pin 26 and the main pin hole 17) and the force point of the tensile force F are offset,
A moment is generated in the caliper 13, and the caliper 13 tries to rotate in the direction indicated by the arrow M1 in FIGS. 3 (A) and 4 (A) about the support point.

When the caliper 13 is rotationally biased in the direction indicated by the arrow M1 in this way, the pads 14 and 15 are inclined and uneven wear occurs. Specifically, the inner pad 14 is worn on the inlet side of the rotor 11, and the outer pad 15 is worn on the outlet side of the rotor 11. The state indicated by alternate long and two short dashes lines B1 and B2 in FIG. 1 is a state in which uneven wear occurs in the inner pad 14 and the outer pad 15.

The uneven wear generated as described above progresses as long as the caliper 13 can rotate in the direction indicated by the arrow M1.
Therefore, the occurrence of uneven wear can be suppressed by restricting the rotation of the caliper 13 in the M1 direction. Here, in the range in which the caliper 13 can rotate in the direction of the arrow M1, the outer end portion 17a of the main pin hole 17 is at the main pin 2
It is a range until engaging with 1.

When considering the rotation range of the caliper 13, a sufficient clearance is provided between the sub pin hole 18 and the sub pin 22 as described above, so that the relationship between the main pin hole 17 and the main pin 26 is satisfied. Only need to judge. Now, the disc brake device 1 shown in FIG.
Assuming that 0 is a state where uneven wear does not occur in the pads 14 and 15, the outer end portion 17 of the main pin hole 17 is
A gap W1 is formed between a and the main pin 26. On the other hand, in the disc brake device 25 shown in FIG. 4 (A), the gap W2 is formed. Looking at the size relationship between the gap W1 and the gap W2, the gap W1 is smaller than the gap W2 because the main pin 21 has the inclination angle θ in the disc brake device 10 according to the present embodiment. (W1 <W2).

Therefore, in the disc brake device 10 according to this embodiment, the outer end portion 17a of the main pin hole 17 engages with the main pin 26 as shown in FIG. However, the further rotation of the caliper 13 in the M1 direction is restricted. Therefore, by providing the main pin 26 with the inclination angle θ, the inner pad 1
4 and the outer pad 15 can be suppressed from being excessively worn.

On the other hand, in the disc brake device 25, since the gap W2 is large, the caliper 13 has a wide rotatable range in the M1 direction, and excessive uneven wear occurs on the pads 14 and 15. In each figure, the positions indicated by ▲ are the main pin hole 17 and the main pin 21 (2
6) Engagement position with.

Next, the operation of the disc brake device 10 during non-braking will be described with reference to FIG. When the driver releases the brake, the piston 16 retracts, and the inner pad 14 also retracts from the rotor 11 accordingly. At this time, in the disc brake device 10 according to the present embodiment, the inner pad 14 has the rotor 1
It is configured to fully retract from 1.

As the inner pad 14 is separated from the rotor 11 in this manner, a moment to rotate due to its own weight is generated in the caliper 13. More specifically, when the center of gravity of the caliper 13 is G in the figure, the center of gravity G of the caliper 13 is at a position where the caliper 13 is supported by the mounting 20, that is, the main pin hole 17
Is offset to the inner side (left side in the drawing) of the engagement position between the main pin 21 and the main pin 21.

For this reason, when the rotor 11 is not clamped by the pads 14 and 15 and the brake is not applied, the caliper 13 has the center of rotation of the main pin hole 17 and the main pin 21 as the center of rotation. A moment (a counterclockwise moment indicated by an arrow M2 in the figure) having a position as a force point is generated. Due to this moment M2, the caliper 13 positively tilts itself.

At this time, the caliper 13 can be largely tilted by providing the main pin 21 arranged in the direction in which the caliper 13 is tilted as described above with the tilt angle θ. The reason for this will be described below. In the disc brake device 25 having the main pin 26 without the inclination angle θ shown in FIG. 4B, the outer end portion 17 a of the main pin hole 17 is immediately connected to the lower portion of the main pin 26 due to a slight tilt of the caliper 13. As a result, the inner end portion 17b of the main pin hole 17 engages with the upper portion of the main pin 26. Therefore, in the configuration of the disc brake device 25, the tilt amount of the caliper 13 due to the moment M2 becomes small, and the outer pad 15 and the rotor 11 interfere with each other to cause dragging as shown in the figure.

On the other hand, in the disc brake device 10 according to the present embodiment, when the braking is released and the caliper 13 starts to tilt in the braking state shown in FIG. 3 (A),
First, in the caliper 13, the main pin 21 has the main pin hole 17
4 (A) (a position similar to that shown in FIG. 4 (A)) is tilted with the position of ▴ indicated by the reference numeral 23 as a tilt fulcrum, and further, as shown in FIG. The outer end 17a of the hole 17 is engaged with the lower portion of the main pin 21, and the inner end 17b of the main pin hole 17 is engaged with the upper portion of the main pin 21. The tilting is performed with the engagement position with the lower part of the () indicated by reference numeral 47 as the fulcrum. In each figure, the engagement position between the main pin hole 17 and the main pin 21 is indicated by a triangle mark.

As described above, by providing the main pin 21 arranged in the tilting direction of the caliper 13 with the tilt angle θ, the caliper 13 can be largely tilted, and accordingly, the caliper 13 is fixed to the caliper 13. The amount of movement of the outer pad 15 that is present also increases. Therefore, the outer pad 15 can be separated from the rotor 11 to a greater extent, and the occurrence of drag between the outer pad 15 and the rotor 11 can be prevented as much as possible.

In the above embodiment, the main pin 21
Although the configuration is shown in which the tilt angle θ is provided, the main pin 21 is configured to extend in the horizontal direction and the main pin hole 1
Even if the inclination angle θ is provided in 7, the same effect can be obtained. Next, a second embodiment of the present invention will be described.

6 to 8 show a disc brake device 30 which is a second embodiment of the present invention. 6 to 8, the same components as those of the disc brake device 10 according to the first embodiment shown in FIGS. 1 to 3 are designated by the same reference numerals and the description thereof will be omitted.

The disc brake device 10 according to the first embodiment described above has a structure in which the disc brake device 10 is attached to the rear position of the wheel with respect to the traveling direction of the vehicle 19. On the other hand, the disc brake device 30 according to the present embodiment is characterized in that the disc brake device 30 is mounted at the wheel front position in the traveling direction of the vehicle 19 as shown in FIG. is there.

Therefore, the rotor 11 rotates in the direction shown by the arrow in FIG. 6 (direction from the sub pin 22 to the main pin 21). Also, the force (pulling force F) with which the pads 14 and 15 are pulled by the rotor 11 during braking is also sub pin 22.
Acts in the direction from to the main pin 21 (tensile force F
Is shown in FIG. 8 (A)).

The structure of the disc brake device 30 is the same as that of the disc brake device 10 according to the first embodiment, and in the present embodiment as well, only the main pin 21 forms an angle .theta. The angle θ) is inclined. The tilting direction of the main pin 21 is upward (rotor rotating direction) with respect to the horizontal direction.

Next, the operation of the disc brake device 30 having the above structure will be described with reference to FIG. FIG.
8A shows the disc brake device 30 during braking, and FIG. 8B shows the disc brake device 30 during non-braking. First, the operation of the disc brake device 30 during non-braking will be described with reference to FIG.

Disc brake device 3 during non-braking
The operation of 0 is the same as the operation of the disc brake device 10 according to the first embodiment described above. That is, the piston 16 is retracted by the driver's brake release operation, and the inner pad 14 is separated from the rotor 11 accordingly.

Further, as described above, the center of gravity G of the caliper 13 is offset to the inner side (left side in the drawing) of the engagement position between the main pin hole 17 and the main pin 21, so that the caliper is not in braking. 13 is the main pin hole 1
7 and the main pin 21 are engaged with each other (the position indicated by the reference numeral 31 in FIG. 8A), and the center of gravity G
A moment M2 is generated with the position of as the power point. Therefore, the caliper 13 positively tilts itself by this moment M2.

At this time, in the disc brake device 30 according to the present embodiment, the main pin 21 arranged in the tilting direction of the caliper 13 is provided with the inclination angle θ, so that it is the same as that described in the first embodiment. For the reason, the caliper 13 can be tilted largely. Therefore, the movement amount of the outer pad 15 fixed to the caliper 13 is also increased, and thus the outer pad 15 can be further separated from the rotor 11, so that dragging can be prevented as much as possible. In each figure, the engagement position between the main pin hole 17 and the main pin 21 is indicated by a triangle mark.

Next, the operation of the disc brake device 30 during braking will be described. The operation of the disc brake device 30 during braking is basically the same as that of the disc brake device 10 according to the first embodiment. However, as described above, in the present embodiment, since the disc brake device 30 is mounted at the wheel front position with respect to the traveling direction of the vehicle 19, the rotation direction of the rotor 11 with respect to the disc brake device 30 is the reverse direction. . In addition, in accordance with this, the pads 14 and 15 are attached to the rotor 1 during braking.
The action direction of the tensile force F pulled by 1 is also the opposite direction. That is, the tensile force F is from the sub pin 22 to the main pin 21.
Acts in the direction toward.

In this way, the tensile force F acts in the direction from the sub pin 22 to the main pin 21, so that the main pin 21 engages with the main pin hole 17 at the position indicated by reference numeral 31 in the drawing. Becomes The moment generated in the caliper 13 by the tensile force F is also in the opposite direction (see FIG. 8).
(A) is the direction indicated by the arrow M3), and the uneven wear generated on the pads 14 and 15 accordingly occurs in the opposite state to that shown in FIG.

Therefore, in the disc brake device 30 according to the present embodiment, the effect of suppressing uneven wear is inferior to that of the disc brake device 10 according to the first embodiment, but as described above, the drag of the outer pad 15 is dragged. The prevention effect can be surely obtained.

In this embodiment also, the main pin 21
And a main pin hole 1
Even if the inclination angle θ is provided in 7, the same effect can be obtained. Subsequently, a third embodiment of the present invention will be described.

9 to 11 are schematic configuration diagrams showing a disc brake device 40 which is a third embodiment of the present invention.
9 to 11, the same components as those of the disc brake device 10 according to the first embodiment shown in FIGS. 1 to 3 are designated by the same reference numerals and the description thereof will be omitted.

Disc brake device 40 according to the present embodiment
The main pin hole 41 and the sub pin hole 42, which serve as the slide pin holes described above, are provided in the mounting 20, and the main pin 4 serving as the slide pin described above is provided in the caliper 13.
3 and the sub pin 44 are arranged.

Also in this embodiment, the main pin hole 41 is arranged at the lower position with respect to the vertical direction, that is, in the direction in which the caliper 13 is about to tilt, and the sub pin hole 42 is arranged above the main pin hole 42. Correspondingly, the main pin 43 is arranged below the vertical direction and the sub pin hole 44 is arranged above. Furthermore, the main pin 43 is slidably inserted in the main pin hole 41, and the sub pin 44 is slidably inserted in the sub pin hole 42. As a result, also in this embodiment, the caliper 13 is supported by the mounting 20 in a floating state.

Here, the main pin 43 and the sub pin 44
In the disc brake device 40 according to the present embodiment, the main pin 43 and the sub pin 44 are configured to extend in the direction approaching the rotor 11 (left direction in the drawing). Therefore, the disc brake device 40 according to the present embodiment has a so-called forward pin type disc brake structure.

Further, the disc brake device 40 in this embodiment is mounted at a wheel rear position with respect to the traveling direction of the vehicle 19 as shown in FIG. Therefore, the rotor 11 rotates in the direction indicated by the arrow in FIG. 9A (the direction from the main pin 43 to the sub pin 44). Also, when braking, each pad 14, 1
The tensile force F, which is the force 5 is pulled by the rotor 11, also acts in the same direction as the rotation direction of the rotor 11.

Here, paying attention to the main pin 43, in the disc brake device 40 according to the present embodiment, the main pin 43 moves upward in the horizontal direction (rotor rotation direction) by an inclination angle θ with respect to the horizontal direction. The structure is inclined.
On the other hand, the sub-pin 44, the main pin hole 41, and the sub-pin hole 42 are not provided with an inclination and are configured to extend in the horizontal direction.

Next, the operation of the disc brake device 40 having the above structure will be described. 9A shows the disc brake device 40 during braking, and FIG. 9B shows the disc brake device 40 during non-braking.
Is shown. Further, FIG. 10 shows, as a comparative example, a disc brake device 45 in which the main pin 46 is not tilted in order to clarify the operation of the disc brake device 40 according to the present embodiment. 10 (A) shows the disc brake device 45 during braking, and FIG. 10 (B) shows the disc brake device 45 during non-braking. In addition, in FIG. 10, the same reference numerals are given to the configurations corresponding to those shown in FIG. 9.

First, the operation of the disc brake device 40 during braking will be described with reference to FIG. The braking operation of the disc brake device 40 according to the present embodiment is basically the same as the braking operation of the disc brake device 10 according to the first embodiment. That is, the piston 16 slides toward the rotor 11 by the brake operation, and the inner pad 14 moves as the piston 16 moves.
Are pressed against the rotor 11. Also, the inner pad 14
The caliper 13 moves due to the reaction force of pressing against the rotor 11, so that the outer pad 15 also presses against the rotor 11. As a result, the inner pad 14 and the outer pad 15 both slidably contact the rotor 11 in a substantially parallel state, whereby a braking force is generated.

Further, paying attention to the main pin 43 during braking, the disc brake device 40 according to the present embodiment is also constructed such that the main pin 43 has an inclination angle θ in the rotor rotation direction, and therefore the above-mentioned braking state. In, the main pin 43 engages with the main pin hole 41 at the position indicated by the reference numeral 47 in the figure.

On the other hand, in the disc brake device 45 having the main pin 46 having no inclination angle,
As shown in 0 (A), during braking, the main pin 46
The entire upper surface of is engaged with the main pin hole 41. Further, considering the occurrence of uneven wear in this embodiment, the tensile force F is the main pin 4 in this embodiment.
3 from the direction toward the sub pin 44,
As in the first embodiment shown in FIG.
The moment shown by is generated. Therefore, also in this embodiment, uneven wear similar to that indicated by the two-dot chain lines B1 and B2 in FIG. 1 occurs in the inner pad 14 and the outer pad 15.

Assuming that the disc brake device 40 shown in FIG. 9A is in a state where uneven wear does not occur on the pads 14 and 15, the outer end portion 41a of the main pin hole 41 and the main pin 43 are formed. A gap W3 is formed between and. On the other hand, in the disc brake device 45 shown in FIG. 10 (A), a gap W4 is formed. Looking at the magnitude relationship between the gap W3 and the gap W4, the gap W3 is smaller than the gap W4 because the main pin 43 has the inclination angle θ in the disc brake device 40 according to the present embodiment. (W3 <W4).

Therefore, in the disc brake device 40 according to the present embodiment, when a minute uneven wear occurs,
As shown in FIG.
The outer end portion 41a of the caliper 13 is engaged with the outer end portion 41a, and further rotation of the caliper 13 in the M1 direction is restricted. Therefore, in this embodiment as well, by providing the main pin 43 with the inclination angle θ, it is possible to prevent excessive uneven wear from occurring in the inner pad 14 and the outer pad 15.

On the other hand, in the disc brake device 45, since the gap W4 is large, the range in which the caliper 13 can rotate in the M1 direction is wide, and therefore the pads 14 and 15 are large.
Will cause excessive uneven wear. In each drawing, the positions indicated by ▲ are the main pin hole 41 and the main pin 4.
3 (46) is the engagement position.

Next, the operation of the disc brake device 40 during non-braking will be described with reference to FIG. 9 (B). The piston 16 retracts due to the driver's brake release operation during non-braking, and the inner pad 14 also retracts (retracts) from the rotor 11 accordingly. At this time, also in the disc brake device 40 according to the present embodiment, the inner pad 14 is configured to be sufficiently retracted from the rotor 11.

Here, the disc brake device 40 according to the present embodiment has the forward pin type disc brake structure in which the main pin 43 and the sub pin 44 extend in the direction approaching the rotor 11 as described above. The center of gravity G of the caliper 13 and the position where the caliper 13 is supported by the mounting 20 (that is, the engagement position between the main pin hole 17 and the main pin 21) are close to each other.

Accordingly, in the forward pin type disc brake device 40, only a small moment acts on the caliper 13 when the rotor 11 is not clamped by the pads 14 and 15 and is not braked. For this reason,
In the disc brake device 45 having the main pin 46 not provided with the tilt angle θ shown in FIG. 10B, the caliper 13 does not tilt due to the release of the braking, but simply moves vertically downward. Therefore, in the disc brake device 45 having the main pin 46 without the tilt angle θ,
Even if the braking is released, the outer pad 15 remains in contact with the rotor 11 and dragging occurs.

On the other hand, in the disc brake device 40 according to the present embodiment, the main pin 43 arranged in the direction in which the caliper 13T is tilted is provided with the tilt angle θ, so that the braking is released. 9A, the caliper 13 positively tilts by its own weight over the range in which the tip end portion 43a of the main pin 43 engages with the main pin hole 41. FIG. 9B shows a state in which the caliper 13 is tilted (that is, a non-braking state).

As described above, the main pin 21 has an inclination angle θ.
By providing the above, even in the forward pin type disc brake device 40, the caliper 13 can be positively tilted, and accordingly, the outer pad 15 can be separated from the rotor 11.
As a result, the outer pad 15 can be reliably separated from the rotor 11 during non-braking, and the occurrence of drag in the disc brake device 40 according to the present embodiment can be prevented as much as possible.

In the above embodiment, the main pin 43
Although the configuration in which the inclination angle θ is provided is shown, the main pin 43 is configured to extend in the horizontal direction and the main pin hole 4 is formed.
Even if the inclination angle θ is provided in 1, the same effect can be obtained. Further, in each figure, the position indicated by a triangle is the engagement position between the main pin hole 41 and the main pin 43 (46).

Next, a fourth embodiment of the present invention will be described. 12 and 13 are schematic configuration diagrams showing a disc brake device 50 according to a fourth embodiment of the present invention. It should be noted that in FIGS. 12 and 13, the third portion shown in FIGS.
The same components as those of the disc brake device 40 according to the embodiment are designated by the same reference numerals and the description thereof will be omitted.

The disc brake device 40 according to the third embodiment described above is constructed such that the disc brake device 40 is attached to the rear position of the wheel in the traveling direction of the vehicle 19. On the other hand, the disc brake device 50 according to the present embodiment is characterized in that the disc brake device 50 is attached to the front position of the wheel in the traveling direction of the vehicle 19. Therefore, the rotation direction of the rotor 11 and the direction in which the tensile force F acts are the directions indicated by the arrows in FIG.

Further, in the disc brake device 50 according to the present embodiment, the main pin hole 51 is provided above the vertical direction and the sub pin hole 52 is provided below the vertical direction, and correspondingly, the vertical direction is provided. Against the main pin 53
And the sub-pin hole 54 is provided below.

The main pin 53 is slidably inserted into the main pin hole 51, and the sub pin 54 is slidably inserted into the sub pin hole 52, whereby the caliper 13 is in a floating state on the mounting 20. It is supposed to be supported by.

The main pin 53 is also used in this embodiment.
Is tilted by a tilt angle θ with respect to the horizontal direction, and the tilt direction is downward with respect to the horizontal direction (rotor rotation direction). Next, the operation of the disc brake device 50 having the above configuration will be described with reference to FIG.

FIG. 12 (A) shows the disc brake device 50 during braking, and FIG. 12 (B) shows the disc brake device 50 during non-braking. First, the operation of the disc brake device 50 during braking will be described with reference to FIG.

The disc brake device 50 according to the present embodiment.
The operation at the time of braking is basically the same as the operation at the time of braking of the disc brake device 10 according to the first embodiment, but since the arrangement position of the main pin 53 is upside down, the operation is symmetrical. Become. Therefore, paying attention to the main pin 53 during braking, the disc brake device 50 according to the present embodiment.
Is configured such that the main pin 53 has an inclination angle θ in the rotor rotation direction, the main pin 5 is
3 is engaged with the main pin hole 51 at the position indicated by reference numeral 57 in the figure.

Considering the occurrence of uneven wear in this embodiment, the tensile force F acts in the direction from the main pin 53 to the sub pin 54 in this embodiment, so that the caliper 13 is shown in FIG. A moment indicated by an arrow M4 is generated at. Therefore, in the present embodiment, the uneven wear opposite to that shown by the two-dot chain lines B1 and B2 in FIG.
4 and the outer pad 15.

Assuming that the disc brake device 50 shown in FIG. 12A is in a state where uneven wear does not occur in the pads 14 and 15, the outer end portion 51a of the main pin hole 51 and the main pin 53 are shown. A gap W5 is formed between and. Therefore, in the disc brake device 50 according to the present embodiment, when the minute uneven wear occurs,
As shown in FIG.
The outer end portion 51a of the caliper 13 is engaged, and the further rotation of the caliper 13 in the M4 direction is restricted. Therefore, in this embodiment as well, by providing the main pin 53 with the inclination angle θ, it is possible to suppress excessive uneven wear of the inner pad 14 and the outer pad 15.

Next, the operation of the disc brake device 50 during non-braking will be described with reference to FIG. Since the disc brake device 50 according to the present embodiment also has a forward pin type disc brake structure in which the main pin 53 and the sub pin 54 extend in the direction approaching the rotor 11, the center of gravity G of the caliper 13 and the caliper 13 are mounted. The positions supported by 20 are close to each other, and only a small moment acts on the caliper 13.

In the disc brake device 50 according to this embodiment, however, the main pin 53 is provided with the inclination angle θ. Therefore, when the brake is released, the main pin 53 is changed from the state shown in FIG. The caliper 13 positively tilts by its own weight over the range in which the tip portion 53a engages with the main pin hole 51. FIG. 12B shows the caliper 13.
Shows a tilted state (that is, a non-braking state).

As described above, even if the forward pin type disc brake device 40 is mounted at the rear position of the wheel with respect to the traveling direction of the vehicle 19, the main pin 53 can be used.
It is possible to positively tilt the caliper 13 by providing the tilt angle θ. Accordingly, the outer pad 15 can be separated from the rotor 11. Therefore, the outer pad 15 can be reliably separated from the rotor 11 during non-braking, and the occurrence of drag can be prevented as much as possible even in the disc brake device 50 according to the present embodiment.

In the above embodiment, the main pin 53
Although the configuration is shown in which the tilt angle θ is provided, the main pin 53 is configured to extend in the horizontal direction and the main pin hole 5 is formed.
Even if the inclination angle θ is provided in 1, the same effect can be obtained. Further, in each drawing, the position indicated by ▴ is the engagement position between the main pin hole 51 and the main pin 53.

Next, a fifth embodiment of the present invention will be described. 14 to 16 show a disc brake device 60 which is a fifth embodiment of the present invention. 14 shows the disc brake device 60 during braking, and FIG. 16 shows the disc brake device 60 during non-braking.
Further, FIG. 15 is an enlarged view showing a biasing member 61 described later. It should be noted that in FIGS.
Disc brake device 40 according to the third embodiment shown in FIG.
The same reference numerals are given to the configurations corresponding to the configurations of 1, and the description thereof will be omitted.

The disc brake device 60 according to the present embodiment.
Then, the main pin hole 4 provided in the mounting 20
1, the sub-pin hole 42 and the main pin 43 and the sub-pin 44 arranged in the caliper 13 are configured to extend in the horizontal direction, which is different from the above-described embodiments in that the tilt angle θ is not provided. . Further, between the main pin hole 41 and the main pin 43, and between the sub pin hole 42 and the sub pin 44.
It is configured such that a sufficient space is formed between and.

As described above, the disc brake device 60 according to the present embodiment is different from each of the above-described embodiments and is simply provided between the main pin hole 41 and the main pin 43 and the sub pin hole 4.
2 is configured to adjust only the gap between the sub pin 44 and the main pin hole 41 or the main pin 43.
It is not necessary to perform a special device such as providing an inclination angle θ on the disc brake device 60, and the manufacturing cost of the disc brake device 60 can be reduced.

On the other hand, the disc brake device 60 according to the present embodiment is provided with a biasing member 61 which functions as a biasing means for biasing the caliper 13 only in the downward direction between the caliper 13 and the mounting 20. There is. The biasing member 61 has a leaf spring structure as shown in an enlarged view in FIG. 15, and is fixed to the mounting 20 with a screw 62.

This urging member 61 is mounted on the mounting 20.
On the other hand, the elastic force f is generated so as to always urge the caliper 13 toward the lower part of the vehicle. Therefore, as compared with the conventional structure in which the spring 9 keeps the caliper 2 horizontal (see FIG. 18), the urging member 61 merely presses the caliper 13 downward, so that the elastic force is adjusted. Can be done easily. In each drawing, the side where the main pin 43 is arranged is the lower part of the vehicle, and the side where the sub pin 44 is arranged is the upper part of the vehicle.

Next, the operation of the disc brake device 60 having the above structure will be described. First, the operation of the disc brake device 60 during braking will be described. FIG. 14 shows a disc brake device 60 during braking.
Is shown. Disc brake device 4 according to the present embodiment
The braking operation of 0 is basically the same as the braking operation of the disc brake device 10 according to the first embodiment.

That is, the piston 16 slides in the direction of approaching the rotor 11 by the brake operation, and the piston 16
The inner pad 14 is pressed against the rotor 11 with the movement of the. Further, the caliper 13 moves due to the reaction force of the inner pad 14 coming into pressure contact with the rotor 11, so that the outer pad 15 also comes into pressure contact with the rotor 11.

As a result, the caliper 13 moves to a position where both the inner pad 14 and the outer pad 15 are in sliding contact with the rotor 11 in a substantially parallel state, and each pad 1
4 and 15 are brought into sliding contact with the rotor 11 to generate a braking force. At this time, the caliper 13 moves against the elastic force f of the biasing member 61 described above.

Next, the operation of the disc brake device 60 during non-braking will be described with reference to FIG. The piston 1 is released by the driver's braking release operation during non-braking.
6 retreats, and the inner pad 14 also moves to the rotor 1
Retract from 1. At this time, also in the disc brake device 40 according to the present embodiment, the inner pad 14 is configured to be sufficiently retracted from the rotor 11.

Here, in the disc brake device 60 according to this embodiment, as described above, a sufficient space is formed between the main pin hole 41 and the main pin 43 and between the sub pin hole 42 and the sub pin 44. The biasing member 61 is configured to bias the caliper 13 toward the lower portion of the vehicle with respect to the mounting 20.
Therefore, when the brake is released and the inner pad 14 is separated from the rotor 11, the caliper 13 is biased by the elastic force f generated by the biasing member 61 and tilts in the direction indicated by the arrow M5 in the figure. At this time, the caliper 13 tilts about a fulcrum indicated by reference numeral 48 in FIG. 16 as a fulcrum.

As described above, by providing the biasing member 61, the caliper 13 can be positively tilted, and accordingly, the outer pad 15 can be separated from the rotor 11. Further, between the main pin hole 41 and the main pin 43, and between the sub pin hole 42 and the sub pin 44.
Since a sufficient space is formed between the outer pad 15 and the rotor 11, the outer pad 15 can be largely separated from the rotor 11, and the disc brake device 6 according to the present embodiment.
Even at 0, dragging can be prevented as much as possible.

Also, in the tilted state, the caliper 13
Maintains a state of being urged downward by the urging member 62, so that even if a large gap is formed between the main pin hole 41 and the main pin 43 and between the sub pin hole 42 and the sub pin 44. , Caliper 13 and mounting 20
It is possible to suppress the occurrence of rattling.

Further, since the disc brake device 60 according to this embodiment is of the forward pin type, the caliper 1
Although the moment generated by the own weight of 3 is small, the caliper 13 can be surely tilted by providing the biasing member 61. In the above embodiment, when the center of gravity of the caliper 13 is sufficiently separated (offset) from the center of rotation when the caliper 13 is tilted, the biasing member 61 is used.
Of course, it is not always necessary to provide. Further, in the figure, the positions indicated by ▲ are the main pin hole 41 and the main pin 4.
3 is the engagement position.

Next, a sixth embodiment of the present invention will be described. FIG. 17 shows a disc brake device 70 which is a sixth embodiment of the present invention. Further, the figure shows the disc brake device 70 when not braking. Note that FIG.
14 to 16, the same components as those of the disc brake device 60 according to the fifth embodiment shown in FIGS. 14 to 16 are designated by the same reference numerals and the description thereof will be omitted.

The disc brake device 70 according to the present embodiment.
The main pin hole 71 and the sub pin hole 72 are the caliper 13
The main pin 73 and the sub pin 74 are disposed on the mounting 20. Further, the main pin hole 71, the sub pin hole 72, the main pin 73, and the sub pin 74 are both configured to extend in the horizontal direction, and the tilt angle θ is not provided. Further, a sufficient space is formed between the main pin hole 71 and the main pin 73 and between the sub pin hole 72 and the sub pin 74.

Therefore, also in the disc brake device 70 according to the present embodiment, it is not necessary to make a special device such as providing the main pin hole 71 or the main pin 73 with the inclination angle θ, and the manufacturing cost of the disc brake device 70 is reduced. Can be reduced. Further, the disc brake device 70 having the above-described configuration is provided with a biasing member 71 that functions as a biasing means between the caliper 13 and the mounting 20. In this embodiment, the biasing member 71 mounts the caliper 13 on the mounting 20. In contrast, the tilting bias is applied only in the upward direction. The urging member 71 has the same structure as that shown in FIG. 15 and is fixed to the mounting 20 with a screw 62. In FIG. 17, the side where the main pin 73 is disposed is the upper portion of the vehicle, and the side where the sub pin 74 is disposed is the lower portion of the vehicle.

Next, the operation of the disc brake device 70 having the above structure will be described. Since the operation of the disc brake device 70 during braking is substantially the same as that of the disc brake device 60 according to the fifth embodiment described above, the description thereof will be omitted and only the operation during non-braking will be described.

The disc brake device 70 according to the present embodiment.
As described above, the main pin hole 71 and the main pin 73
And between the sub-pin hole 72 and the sub-pin 74, a sufficient space is formed, and the urging member 75 urges the caliper 13 toward the upper part of the vehicle with respect to the mounting 20. It is configured. Therefore,
When the brake is released and the inner pad 14 is separated from the rotor 11, the caliper 13 tilts in the direction indicated by the arrow M6 in the figure by the elastic force f generated by the biasing member 75.

At this time, the urging member 71 has an elastic force f that sufficiently overcomes the moment generated by the weight of the caliper 13.
Is configured to generate. By providing this urging member 75, the caliper 13 can be positively tilted upward with the ▴ mark shown by reference numeral 49 in the drawing as a fulcrum, and the outer pad 15 is removed from the rotor 11 accordingly. It can be separated.

Further, as described above, between the main pin hole 71 and the main pin 73 and between the sub pin hole 72 and the sub pin 74.
Since a sufficient space is formed between the outer pad 15 and the rotor 11, the outer pad 15 can be largely separated from the rotor 11, and the disc brake device 7 according to the present embodiment.
Even at 0, dragging can be prevented as much as possible.

Further, since the caliper 13 is kept biased upward by the biasing member 75 when the braking is released, rattling of the caliper 13 during non-braking is suppressed as much as possible. You can Also, in the figure,
The positions indicated by ▴ are the engaging positions of the main pin holes 71 and the main pins 73.

[0109]

As described above, according to the present invention, the following various effects can be realized. According to the inventions of claims 1 and 2, the outer pad can be further separated from the rotor during non-braking, so that dragging can be prevented as much as possible.

According to the second aspect of the invention, since the outer pad can be reliably separated from the rotor during non-braking, drag can be prevented as much as possible, and the slide pin and It is not necessary to perform a special device such as providing the slide pin hole with an inclination, and the manufacturing cost can be reduced.

Further, according to the third aspect of the present invention, since the biasing means biases the caliper in a tilting direction only in one direction, rattling of the caliper during non-braking can be suppressed as much as possible.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a disc brake device according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining a mounting position of the disc brake device according to the first embodiment of the present invention.

FIG. 3 is a diagram for explaining the operation of the disc brake device according to the first embodiment of the present invention during braking and during non-braking.

FIG. 4 is a diagram showing the operation of the conventional disc brake device during braking and non-braking for comparison with the operation of the disc brake device according to the first embodiment.

FIG. 5 is a diagram showing a braking operation of the disc brake device according to the first embodiment of the present invention during pad partial wear.

FIG. 6 is a schematic configuration diagram of a disc brake device that is a second embodiment of the present invention.

FIG. 7 is a diagram for explaining a mounting position of the disc brake device according to the second embodiment of the present invention.

FIG. 8 is a diagram for explaining the operation of the disc brake device according to the second embodiment of the present invention during braking and during non-braking.

FIG. 9 is a diagram for explaining the structure of the disc brake device according to the third embodiment of the present invention and the operation during braking and during non-braking.

FIG. 10 is a diagram showing the operation of the conventional disc brake device during braking and during non-braking for comparison with the operation of the disc brake device according to the third embodiment.

FIG. 11 is a diagram showing a braking operation of the disc brake device according to the third embodiment of the present invention during uneven pad wear.

FIG. 12 is a diagram for explaining the configuration of a disc brake device that is a fourth embodiment of the present invention and the operation during braking and during non-braking.

FIG. 13 is a diagram showing a braking operation of the disc brake device according to the fourth embodiment of the present invention during uneven pad wear.

FIG. 14 is a diagram for explaining the configuration of the disc brake device according to the fifth embodiment of the present invention and the operation during braking.

FIG. 15 is an enlarged view showing a biasing member provided in a disc brake device according to a fifth embodiment of the present invention.

FIG. 16 is a diagram for explaining the operation of the disc brake device according to the fifth embodiment of the present invention during non-braking.

FIG. 17 is a diagram for explaining the configuration of the disc brake device according to the sixth embodiment of the present invention and the operation during non-braking.

FIG. 18 is a partially cutaway sectional view showing an example of a conventional disc brake device.

[Explanation of symbols]

10, 30, 40, 50, 60, 70 Disc brake device 11 Rotor 13 Caliper 14 Inner pad 15 Outer pad 16 Piston 17, 41, 51, 71 Main pin hole 18, 42, 52, 72 Sub pin hole 20 Mounting 21, 43 , 53, 73 Main pin 22, 44, 54, 74 Sub pin 61, 75 Energizing member

Claims (4)

[Claims] 1. A disc brake device in which a caliper having an inner pad that is movable during braking and an outer pad that is fixed so as to sandwich a rotor is slidable with respect to a mounting by a slide pin and a slide pin hole. A disc brake, wherein the caliper is configured to be tilted about a slide pin or a slide pin hole in a tilting direction when not being braked, and the outer pad is separated from the rotor by tilting of the caliper. apparatus. 2. The disc brake device according to claim 1, wherein at least one of the slide pin and the slide pin hole on a side which is a tilt fulcrum of the caliper is tilted so that the caliper tilts during non-braking. A disc brake device characterized by being configured. 3. The disc brake device according to claim 1, wherein a gap is provided between the slide pin and the slide pin hole on a side serving as a tilting fulcrum of the caliper so that the caliper tilts during non-braking. Disc brake device characterized by the above. 4. The disc brake device according to claim 2, further comprising an urging unit that urges the caliper to tilt in only one direction.