JP3792877B2 - Disc brake device - Google Patents

Description

[0001]
The present invention relates to a disc brake device used for a railway vehicle or the like, and more particularly to an improvement in a structure for mounting a brake device.
[0002]
[Prior art]
In a railway vehicle or the like, a disk brake device is provided for each wheel to brake the vehicle. 6 and 7 show such a disc brake device.
[0003]
The disc brake device includes a brake disc 7 that rotates integrally with each wheel, and a brake caliper 1 that is disposed so as to sandwich the brake disc 7. The brake caliper 1 includes a pair of brake members 5 on both sides of the brake disk 7, and braking torque is generated by friction when these brake members 5 are pressed against the brake disk 7.
[0004]
More specifically, the brake caliper 1 is attached to the vehicle side support portion 3 so as to be slidable in the axial direction (perpendicular to the paper surface) via a pair of guide pins 2A and 2B. The brake caliper 1 includes a pair of arms 4a and 4b (the arm 4b is not shown). These arms 4a and 4b extend substantially in the horizontal direction, and sandwich the brake disc 7 from both sides at the brake supporter 6 provided on the tip side. The control device 5 is supported by the control device 6 via the control device guide 8.
[0005]
A pair of pistons 10 is built in parallel in the brake supporter 6 on the arm 4a side. These pistons 10 are in contact with the brake guide 8 at their tips, and are supplied with hydraulic pressure through the hydraulic inlet 11 provided in the arm 4a and extend toward the brake disk 7 to thereby cause the brake 5 to move. Press against the brake disc 7 side. In this case, the brake caliper 1 can move along the guide pins 2A and 2B in a direction perpendicular to the plane of FIG. 6 (left and right direction in FIG. 7). 7 is sandwiched, and the brake disk 7 is braked by the frictional force generated at this time.
[0006]
The restrictor 5 includes a lining 5A that comes into contact with the brake disc 7 and a back plate 5B that is fixed to the back surface of the lining 5A with rivets. This back plate 5B is adapted to be fitted into the dovetail groove formed in the restrictor guide 8 from the vertical direction of FIGS. Further, the back plate 5B is sandwiched between a pair of upper and lower torque receiving pins 9, and is prevented from falling off from the dovetail groove. In this way, the control device 5 is fixed to the control device support 6.
[0007]
The torque receiving pin 9 is a member for receiving braking torque, and includes a torque receiving pin main body 12 and a cylindrical sleeve 13. The torque receiving pin main body 12 is slidably accommodated in the sleeve 13.
[0008]
The sleeve 13 is integrally fixed to a receiving member 15 fixed by a pair of bolts 14 above and below the brake supporter 6. In addition, these bolts 14 are prevented from rotating by a tangled wire 22. Further, the gap between the torque receiving pin main body 12 and the sleeve 13 is closed by a boot 23.
[0009]
The tip of the torque receiving pin main body 12 that has come out of the sleeve 13 abuts on the back surface of the lining 5A. Further, the tip end side of the torque receiving pin main body 12 is fitted to fitting holes 8A and 8B formed in the restrictor guide 8 and fixed to the restrictor guide 8, and the fitting holes 8A, The portion that has slipped out of 8B is configured to sandwich back plate 5B from above and below. Note that the lower part of the lower fitting hole 8B is notched, and the torque receiving pin main body 12 can also be removed below the brake guide 8 when the lower receiving member 15 is removed.
[0010]
In this disc brake device, the torque receiving pin 9 (the torque receiving pin main body 12 and the sleeve 13) also functions as an adjuster mechanism that compensates for wear of the lining 5A.
[0011]
The adjuster mechanism will be described. The adjuster piston 16 is accommodated in the hollow portion 12 </ b> A penetrating on the central axis of the torque receiving pin main body 12. An adjuster pin 17 is accommodated in the through hole on the central axis of the adjuster piston 16. The adjuster pin 17 is fixed to a bottom member 19 that closes the base end side (the side opposite to the brake disc 7) of the sleeve 13. Further, the adjuster pin 17 and the adjuster piston 16 are prevented from moving in a normal state by a friction member (friction spring) 18 interposed therebetween.
[0012]
When the brake guide 8 is pushed toward the brake disc 7 by the piston 10 during braking, the torque receiving pin main body 12 extends toward the brake disc 7 with respect to the sleeve 13 together with the brake guide 8. In this case, the torque receiving pin main body 12 strokes until the base end side ring member 20 comes into contact with the stepped portion 16 </ b> B formed on the outer periphery of the adjuster piston 16.
[0013]
Further, a spring 21 is interposed between the flange 16A at the tip of the adjuster piston 16 and the ring member 20 fixed to the base end side of the sleeve 13, and this spring 21 connects the torque receiving pin main body 12 to the base end. It acts as a return spring that pulls back to the side (right side in FIG. 7).
[0014]
In such a configuration, when the lining 5A is worn down by the braking operation, the torque receiving pin main body 12 strokes excessively by the amount of wear of the lining 5A from the place where the ring member 20 contacts the stepped portion 16B during braking. The adjuster piston 16 moves relative to the adjuster pin 17 by the excess stroke, but the friction member 18 is a position where the adjuster piston 16 is moved relative to the adjuster pin 17 and the relative position thereof is constant. Acts like
[0015]
As a result, the adjuster piston 16 (torque receiving pin main body 12) advances the initial position by the amount of wear of the lining 5A, so that the stroke of the torque receiving pin main body 12 (piston 10) during braking is kept constant. Will be drunk.
[0016]
6 and 7 show only the arm 4a side and the arm 4b side is not shown, but the arms 4a and 4b are not provided with the piston 10 and the adjuster mechanism only on the arm 4a side. This is a substantially common configuration, and in particular, the same applies to the mounting structure of the control device 5.
[0017]
[Problems to be solved by the invention]
By the way, when carrying out the attaching / detaching operation of the restrictor 5 in such a conventional disc brake device, as described above, the lower receiving member 15 is removed and the restrictor 5 (back plate 5B) is attached to the restrictor guide 8. It needs to be pulled out and fitted along the dovetail.
[0018]
However, in order to remove the receiving member 15, it is necessary to first remove the tangled wire 22 that prevents the bolt 14 from rotating, and then remove the two bolts 14, resulting in poor work efficiency and work time. Was the cause of the increase.
[0019]
Further, a fall prevention mechanism for supporting the receiving member 15 is required so that the receiving member 15 is not dropped when the receiving member 15 is removed, which causes an increase in cost and weight due to the number of parts.
[0020]
The present invention has been made paying attention to such problems, and it is an object of the present invention to provide a disc brake device that allows easy mounting and dismounting of the control device, and that can reduce cost and weight.
[0021]
[Means for Solving the Problems]
A first aspect of the present invention includes a control member that is disposed on both sides of a brake disk, and a control member that is supported by each of the control member, and the control member is attached to the control member. In a disc brake device having a torque receiving member that fits into a dovetail groove provided in a guide for the above-mentioned restrictor, and supports the pinion member accommodated in the dovetail groove from both sides of the dovetail groove, both ends of the dovetail groove The torque receiving member provided on at least one side of the portion is a cylindrical torque receiving pin, and the torque receiving pin can be rotated by a torque receiving member support portion formed in the brake supporter support portion and in a direction opposite to the brake disc A semicircular cutout is formed in the end portion of the back plate of the above-described restrictor, and one end of the torque receiving pin is fitted into the cutout. An engagement step portion that is recessed toward the control wheel side is formed at an edge of the notch, and an engagement protrusion portion that extends in one direction perpendicular to the rotation axis is formed on the torque receiving pin, and the engagement step By engaging the engaging protrusion with the portion, a locking means for locking the displacement of the brake against the torque receiving pin in the direction of the brake disk is formed. The torque receiving pin is provided with a rotation fixing means for fixing the rotation position of the torque receiving pin while the torque receiving pin is fixed. An adjuster mechanism that is pulled and extends in the axial direction is provided, and the adjuster mechanism adjusts the initial position of the restrictor so as to compensate for the wear of the restrictor.
[0024]
According to a second aspect of the present invention, the torque receiving member support portion is a support hole formed in the brake supporter support portion, and the rotation fixing means is fitted to the torque receiving member from the side of the support hole. It is a pin.
[0025]
According to a third aspect of the present invention, a pair of the locking pins are provided on both sides of the support hole, and pressing means for pressing the locking pins from both sides to prevent the locking pins from being detached is provided.
[0026]
Operation and effect of the invention
In the first aspect of the invention, the brake is normally supported between the pair of torque receiving members, but the rotational position of the torque receiving member is prohibited by the rotation fixing means. The control member is not unlocked, and the control member is not released from the dovetail. On the other hand, when carrying out the attaching / detaching operation of the restrictor, if the rotation fixing means is released, the torque receiving member can be rotated to release the locking by the locking means, and the torque receiving member can be retracted. The control member can be pulled out or fitted along the dovetail groove from the side where the member is removed. Further, in this case, since the torque receiving member is directly supported by the torque receiving member support portion, there is no possibility that the torque receiving member and other members for supporting the torque receiving member will fall during the attaching / detaching operation of the torque receiving member. . Therefore, the attaching and detaching work of the restrictor can be performed very easily and quickly.
[0027]
The adjuster mechanism provided in the torque receiving pin adjusts the initial position of the brake restrictor by extending the torque receiving pin in the axial direction by pulling the engaging protrusion at the engaging step during braking. Compensates for wear.
Further, since the locking means can be formed only by processing the engaging portion on the torque receiving member and the brake plate back plate, it can be configured by simple processing.
[0028]
In the second invention, since the torque receiving member is housed in the support hole and the rotation position thereof is fixed by the rotation-preventing pin, the torque receiving member is removed by removing the rotation-preventing pin. Can be carried out by simply retracting in the support hole, and can be carried out very easily and quickly. Further, the number of members for supporting the torque receiving member is very small, and the weight of the disc brake device can be reduced and the cost can be reduced by reducing the number of parts.
[0029]
In the third invention, the detent pin can be prevented from being detached by the pressing means, while the detent pin can be easily removed by releasing the depressing means, so that the work can be made efficient.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0031]
1 and 2 show a disc brake device according to an embodiment of the present invention. In this embodiment, the basic configuration of the disc brake device is the same as that of the conventional disc brake device shown in FIGS. 6 and 7, and therefore, in the following description, it is shown in FIGS. The description will focus on the differences from the conventional disc brake device.
[0032]
As shown in the figure, in the disc brake device according to the present embodiment, the sleeve 13 of the torque receiving pin 9 is accommodated in a support hole 6 </ b> A formed through the brake supporter support 6. As a result, the torque receiving pin 9 (the sleeve 13 and the torque receiving pin main body 12) is not directly supported by the conventional support member 15 (see FIGS. 6 and 7) but directly supported by the brake supporter 6. The
[0033]
In this case, the sleeve 13 is slidable and rotatable in the support hole 6A, but the base end portion 30 of the sleeve 13 is connected to the brake supporter support portion 6 by a pair of detent pins 31A and 31B from the side. Can be fixed. As a result, the sliding and rotation of the sleeve 13 is prohibited when the rotation preventing pins 31A and 31B are fixed.
[0034]
Further, since the sleeve 13 and the torque receiving pin main body 12 are fixed in the rotational direction via the key 29, the sleeve 13 and the torque receiving pin main body 12 are rotated together.
[0035]
The pair of anti-rotation pins 31A and 31B are disposed at positions facing each other at an angle of 180 degrees around the sleeve base end portion 30, and a fixing spring member (not shown) is bridged between them. This spring member has, for example, a C-shape that surrounds the sleeve base end 30 half a half, and presses the heads of the locking pins 31A and 31B from both sides of the sleeve base end 30 to prevent rotation. The pins 31A and 31B are prevented from coming out.
[0036]
The upper and lower torque receiving pin main bodies 12 sandwich the back plate 5B of the control wheel 5 at the front end side. As shown in FIGS. 3 and 4, a substantially semicircular cutout 32 is formed at the end of the back plate 5 </ b> B, and the tip of the torque receiving pin main body 12 is located above and below the cutout 32. Fit from. Further, along the edge of the notch 32, an engagement step portion 33 is formed facing the lining 5A side (left side in FIG. 2).
[0037]
As shown in FIG. 5, the engagement protrusion 33 formed at the tip of the torque receiving pin main body 12 is engaged with the engagement step 33. By this engagement, the back plate 5B is prevented from falling off to the brake disc 7 side from the state of being sandwiched between the tip portions of the torque receiving pin main body 12.
[0038]
The engagement protrusion 34 is formed by extending the vicinity of the tip end surface of the torque receiving pin main body 12 in one outer peripheral direction, and is engaged with and disengaged from the engagement step 33 according to the rotation angle of the torque receiving pin main body 12. . Specifically, when the torque receiving pin main body 12 is rotated from the engaged state shown in FIG. 5, the engaging protrusion 34 slides on the engaging step 33 and is rotated approximately 180 degrees. By the way, the engagement with the engagement step portion 33 is released.
[0039]
As described above, since the torque receiving pin main body 12 rotates the sleeve 13 integrally with the key 29, if the sleeve 13 is made non-rotatable with the pins 31A and 32B, the torque receiving pin main body 12 The engagement protrusion 34 is not disengaged from the engagement step 33 by rotating.
[0040]
Further, the shape of the engaging protrusion 34 is not particularly limited, and is engaged with and disengaged from the engaging step 33 by the rotational operation of the torque receiving pin body 12 as in the elliptical shape of FIG. I just need it.
[0041]
Also in this embodiment, the torque receiving pin 9 (the torque receiving pin main body 12 and the sleeve 13) is an adjuster mechanism that compensates for the wear of the lining 5A, as in the conventional example shown in FIGS. Also works.
[0042]
Next, the operation will be described.
[0043]
In the disc brake device, a braking torque is generated by friction between the lining 5 </ b> A of the brake member 5 and the brake disc 7. The control device 5 is supported by a control device support 6 of the brake caliper 1. In detail, the back plate 5B of the control device 5 is fitted in the dovetail groove of the control device guide 8 in the vertical direction, and the back plate 5B is paired with a pair of torque receiving pins 9 (torque receiving pin main body 12 and sleeve 13) from above and below. The back plate 5B is prevented from being detached from the dovetail groove.
[0044]
In this case, the torque receiving pin main body 12 is fitted to the notches 32 at both ends of the back plate 5B, and the engagement step portion 33 formed at the edge of the notch 32 has a brake disc 7 side (FIG. 2). From the left side), the engaging projection 34 at the tip of the torque receiving pin main body 12 is engaged. By this engagement, the back plate 5 </ b> A is pressed down without falling off to the brake disk 7 side, and the brake device 5 is reliably held between the pair of upper and lower torque receiving pin bodies 12.
[0045]
On the other hand, when removing the restrictor 5, the pins 31A and 31B fixing the base end portion 30 of the sleeve 13 to the restrictor support portion 6 are removed, and the torque receiving pin 9 is rotated 180 degrees to thereby remove the torque receiving pin body. 12 The engagement protrusion 34 at the tip and the engagement step 33 of the back plate 5B are disengaged. Further, the torque receiving pin 9 (sleeve 13) is retracted so that the base end side is pulled out rearward (rightward in FIG. 2) from the support hole 6A, and the torque receiving pin main body 12 is retracted from below the back plate 5B. As a result, the back plate 5A that has lost its support downward is pulled out downward along the dovetail groove of the brake guide 8 and can be removed.
[0046]
In addition, when performing the work of attaching the restrictor 5, similarly, the back plate 5 </ b> A is fitted into the dovetail groove of the restrictor guide 8 from below with the torque receiving pin body 12 retracted. Thereafter, the torque receiving pin main body 12 is moved forward to support the back plate 5A from below, and rotated 180 degrees to engage the engaging protrusion 34 and the engaging step 33, thereby preventing the sleeve 13 from rotating. What is necessary is just to fix with the pins 31A and 31B.
[0047]
As described above, according to the present invention, in the attaching and detaching work of the restrictor 5, after removing the non-rotating pins 31 </ b> A and 31 </ b> B for fixing the lower sleeve 13, the torque receiving pin main body 12 is rotated to engage the engaging protrusions. 34 and the engagement step portion 33 are disengaged, and the torque receiving pin main body 12 can be retracted from the lower side of the back plate 5B very easily only by retracting the torque receiving pin 9 along the support hole 6A. The back plate 5B can be easily fitted or removed along the dovetail groove of the brake guide 8. In this case, the rotation prevention pins 31A and 31B can be easily removed by removing the fixing spring member.
[0048]
Therefore, in the present invention, no troublesome work such as removing bolts or tangled wires is required in the attaching / detaching work of the brake element 5. Further, since the torque receiving pin 9 is supported by the support hole 6A of the brake supporter 6, the torque receiving pin 9 and its supporting member (for example, the receiving member 15 in FIGS. 6 and 7) fall during the attaching / detaching operation. There is no fear of it. Therefore, the attaching and detaching work of the restrictor 5 can be performed very easily and quickly.
[0049]
Further, no member for supporting the torque receiving pin 9 (for example, the receiving member 15, the bolt 14 and the tangled wire 22 in FIGS. 6 and 7) is required, and the weight and cost of the disc brake device are reduced by reducing the number of parts. You can go down.
[0050]
In the present embodiment, the structure for supporting the brake restrictor is the same on the upper and lower sides of the brake supporter 6, but the structure for supporting the brake of the present invention is at least one of the upper and lower sides of the brake supporter 6 (the lower side). For example, the other (upper) structure may have a receiving member 15 as in the conventional structure shown in FIGS.
[0051]
Further, the torque receiving pin 9 does not need to have an adjusting function as in the present embodiment, and may be a simple pin type.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line AA in FIG.
FIG. 3 is a front view showing the back plate of the control device.
FIG. 4 is a side view of the same.
FIG. 5 is a front view showing a state in which an engagement protrusion of a torque receiving pin is engaged with an engagement step of the back plate.
FIG. 6 is a side view showing a conventional disc brake device.
7 is a cross-sectional view taken along the line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Brake caliper 2A Guide pin 2B Guide pin 3 Support part 4a Arm 5 Control wheel 6 Control wheel support part 7 Brake disc 8 Control wheel guide 9 Torque receiving pin 10 Piston 11 Hydraulic introduction hole 12 Torque receiving pin main body 13 Sleeve 29 Key 30 Sleeve Base end 31A Non-rotating pin 31B Non-rotating pin 32 Notch 33 Engaging step 34 Engaging protrusion

Claims (3)

A brake supporter disposed on both sides of the brake disc; and a braker supported by each of the braker supporter, the braker being provided on a braker guide attached to the braker supporter. In a disc brake device provided with a torque receiving member that is fitted in the dovetail groove and supports the brake member accommodated in the dovetail groove from both sides of the dovetail groove, the disc brake device is provided on at least one side of both ends of the dovetail groove. The torque receiving member is a columnar torque receiving pin, and the torque receiving pin is supported by a torque receiving member support portion formed on the brake supporter support portion so as to be rotatable and retreatable in a direction opposite to the brake disc. In addition, a semicircular cutout is formed on one end of the torque receiving pin at the end portion of the back plate of the control wheel, and the front edge of the cutout An engagement step portion that is recessed toward the control wheel side is formed, an engagement projection portion that extends in one direction perpendicular to the rotation axis is formed on the torque receiving pin, and the engagement step portion is engaged with the engagement step portion. A locking means for locking the displacement of the brake member in the direction of the brake disk with respect to the torque receiving pin by engaging a protrusion is formed, and the locking by the locking means is performed by the torque receiving pin. The torque receiving pin is provided with a rotation fixing means for fixing the rotational position of the torque receiving pin, while the torque receiving pin is pulled by the engaging projection at the engaging step during braking. A disc brake device comprising an adjuster mechanism extending in a direction, and adjusting an initial position of the restrictor so as to compensate for wear of the restrictor by the adjuster mechanism. The torque receiving member support portion is a support hole formed in the brake supporter support portion, and the rotation fixing means is a detent pin that fits into the torque receiving pin from the side of the support hole. The disc brake device according to claim 1. The said rotation prevention pin is provided in a pair on both sides of the said support hole, and was equipped with the pressing means which presses down these rotation prevention pins from both sides and prevents detachment | leave of a rotation prevention pin. Disc brake device.

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