JPWO2014042031A1 - Parking brake manual release device, brake cylinder device, and brake device - Google Patents

Abstract

Provided is a parking brake manual release device capable of easily performing a manual operation for releasing the operation of a parking spring brake mechanism even when space is limited in a direction orthogonal to the axial direction of the cylinder body. . The parking brake manual release device 3 is used in the brake cylinder device 2 provided with the fluid brake mechanism 24, the parking spring brake mechanism 25, the transmission mechanism 27, and the lock mechanism 28, and includes a lever portion 54 and a cable portion 55. The lever portion 54 swings to pull out the latch member 49 of the lock mechanism 28 toward the outside of the cylinder body 23 to release the engagement of the latch member 49 with the transmission mechanism 27. The cable part 55 transmits the operating force to swing the lever part 54. The direction in which the latch member 49 is pulled out and the direction in which the end portion of the cable portion 55 moves so as to swing the lever portion 54 are set to intersect.

Description

  The present invention is used in a brake cylinder device capable of operating both a fluid brake mechanism used when a vehicle is operated and a parking spring brake mechanism used when a vehicle is parked, and the parking spring brake mechanism is operated by manual operation. The present invention relates to a parking brake manual release device, a brake cylinder device including the parking brake manual release device, and a brake device including the brake cylinder device.

  For example, a brake cylinder device capable of operating both a fluid brake mechanism and a parking spring brake mechanism is known as a brake cylinder device used in a brake device for a railway vehicle (see Patent Document 1). The fluid brake mechanism is operated by compressed air as pressure fluid and is used during normal driving of the vehicle. The parking spring brake mechanism is used when the vehicle is stopped for a long time by operating with a spring force.

  The brake cylinder device disclosed in Patent Document 1 is provided with a service brake means (2) as a fluid brake mechanism and a spring brake means (3) as a parking spring brake mechanism. The service brake means has a first piston (11) in which a first working chamber (14) as a first pressure chamber and a first spring (15) act oppositely. In the service brake means, when the compressed air is supplied to the first working chamber, the first piston moves in a predetermined brake operation direction against the urging force of the first spring. On the other hand, the spring brake means has a second piston (21) in which a second working chamber (24) as a second pressure chamber and a second spring (25) act oppositely. And a 2nd piston moves to a brake action direction by the urging | biasing force of a 2nd spring by the spring brake means changing to the state discharged | emitted from the state from which the compressed air is supplied to the 2nd working chamber.

  Further, the brake cylinder device disclosed in Patent Document 1 includes clutch means (4) as a transmission mechanism for transmitting the urging force of the second piston in the brake operation direction to the rod (111) as a shaft portion that is displaced together with the first piston. ) Is provided. Further, the brake cylinder device of Patent Document 1 is provided with a lock lever (38) from which an eye nut (383) on one end side protrudes outward from the cylinder body. The lock lever is provided as a latch member. The lock lever has a blade tip (381) on the other end engaged with the latch blade (354) of the sleeve member (35) in the clutch means serving as a transmission mechanism, so that the first of the rod is activated when the spring brake means is operated. It is provided as a lock mechanism that restricts relative displacement with respect to the two pistons and keeps the spring brake means in a locked state.

  Further, the lock lever is operated by manual operation so that the eye nut is pulled out in the radial direction of the cylinder body toward the outside of the cylinder body, whereby the lock lever blade edge and the latch blade of the sleeve member are engaged. It is configured to cancel the connection. Thus, in the brake cylinder device of Patent Document 1, the relative displacement of the rod of the service brake means with respect to the second piston is allowed, the lock state of the spring brake means by the lock lever is released, and the operation of the spring brake means is released. It is configured as follows.

JP 2001-206213 A

  In the brake cylinder device disclosed in Patent Document 1, the eye nut of the lock lever is in the radial direction of the cylinder body toward the outside of the cylinder body, that is, the operation direction of the first piston and the second piston by manual operation. It is pulled out in a direction perpendicular to the axial direction of the cylinder body. By this manual operation, the operation of the spring brake means of Patent Document 1 is released. In general, a wire or a cable is attached to the eye nut in order to improve the operability of the manual operation. An operator who releases the operation of the spring brake means by manual operation performs an operation of pulling out the wire or cable in a direction perpendicular to the axial direction of the cylinder body.

  On the other hand, the space where the brake cylinder device is installed on the vehicle is limited. Then, the space in which the operator can pull out the wire or cable along the direction orthogonal to the axial direction of the cylinder body is limited. Or the space which can install a wire or a cable will be restrict | limited so that operation which pulls out a wire or a cable in the direction orthogonal to the axial direction of a cylinder main body is possible. In addition, when it is difficult to install a wire or cable, the operability of manual operation for pulling out the eye nut in a direction orthogonal to the axial direction of the cylinder is lowered. As described above, when space is limited in the direction orthogonal to the axial direction of the cylinder body, it is necessary to secure a space for enabling manual operation for releasing the operation of the spring brake means that is a parking spring brake mechanism. difficult. For this reason, when receiving the space limitation, there is a problem that manual operation for releasing the operation of the parking spring brake mechanism becomes difficult.

  In view of the above circumstances, the present invention facilitates a manual operation for releasing the operation of the parking spring brake mechanism even when the space is limited in the direction orthogonal to the axial direction of the cylinder body. An object of the present invention is to provide a manual parking brake release device. Moreover, it aims at providing a brake cylinder apparatus and a brake apparatus provided with the parking brake manual release apparatus.

  In order to achieve the above object, a parking brake manual release device according to an aspect of the present invention has a first piston in which a first pressure chamber and a first spring act oppositely, and pressure is applied to the first pressure chamber. A fluid brake mechanism in which the first piston moves in a predetermined braking operation direction against the urging force of the first spring by supplying a fluid, and is used when the vehicle is parked. A second piston acting opposite to the spring and moving from a state in which a pressure fluid is supplied to the second pressure chamber to a state in which the second fluid is discharged; A parking spring brake mechanism in which two pistons move in the brake operating direction; a transmission mechanism for transmitting an urging force of the second piston in the brake operating direction to the first piston or a shaft portion that is displaced together with the first piston; Above The parking spring brake includes a latch member having one end projecting outward from a cylinder body that divides one pressure chamber and the second pressure chamber on the inside, and the other end side of the latch member is engaged with the transmission mechanism. A locking mechanism that restricts relative displacement of the first piston or the shaft portion with respect to the second piston when the mechanism is operated, and keeps the parking spring brake mechanism in operation, and is installed in a vehicle. And a brake cylinder device in which both the fluid brake mechanism and the parking spring brake mechanism are operable. And the parking brake manual release device according to an aspect of the present invention is operated by a manual operation to allow relative displacement of the first piston or the shaft portion with respect to the second piston, and the lock mechanism by the lock mechanism. The parking brake manual release device is configured to release the lock state of the parking spring brake mechanism and release the operation of the parking spring brake mechanism. Further, in the parking brake manual release device according to an aspect of the present invention, the fulcrum portion is rotatably connected to the cylinder body or a member attached to the cylinder body, and the action point portion is the latch member. A lever portion connected to one end side and swinging to pull out one end side of the latch member toward the outside of the cylinder body and release the engagement with the transmission mechanism on the other end side of the latch member; The end portion of the lever is connected to the force point portion of the lever portion, the operation portion operated by manual operation is attached to the other end portion, and the operation force applied to the operation portion is transmitted to swing the lever portion. A cable portion, and a direction in which the latch member is drawn toward the outside of the cylinder body, and one end portion of the cable portion when the operation portion is operated The direction of movement of the lever part so as to swing, characterized in that it is set to intersect.

  According to this configuration, when the operator releases the operation of the parking spring brake mechanism by manual operation, the operator operates to pull the operation unit attached to the other end of the cable unit. As a result, the power point portion of the lever portion connected to one end portion of the cable portion is driven, and the lever portion swings. Then, as the lever portion swings, one end side of the latch member is drawn toward the outside of the cylinder body, and the engagement with the transmission mechanism on the other end side of the latch member is released. Thereby, the locked state of the parking spring brake mechanism is released by manual operation, and the operation of the parking spring brake mechanism is released.

  Further, according to the above configuration, the direction in which the latch member is pulled out toward the outside of the cylinder body and the one end of the cable portion swing the lever portion when the operation portion is operated by the operator. The moving direction is set to intersect. For this reason, the end portion of the cable portion connected to the latch member via the lever portion is pulled out along a direction oblique or orthogonal to the direction orthogonal to the axial direction of the cylinder body. The operating force of the pulling operation by the operator is transmitted to the latch member by the cable portion and the lever portion, and only the latch member moves in the direction orthogonal to the axial direction of the cylinder body. Therefore, an operation in which the operator pulls out the cable portion in the direction orthogonal to the axial direction of the cylinder body in the vicinity of the end portion of the latch member becomes unnecessary. Thus, even when the space is limited in the direction perpendicular to the axial direction of the cylinder body, the operator can easily operate the latch member via the cable portion and the lever portion by operating the operation portion. It can be pulled out. That is, even when the space is limited in the direction orthogonal to the axial direction of the cylinder body, the operator can easily perform a manual operation for releasing the operation of the parking spring brake mechanism. Further, a cable portion for pulling out the latch member can be easily installed.

  Therefore, according to the above configuration, a manual operation for releasing the operation of the parking spring brake mechanism can be easily performed even when the space is limited in the direction orthogonal to the axial direction of the cylinder body. Parking brake manual release device can be provided.

  Further, in the parking brake manual release device according to an aspect of the present invention, a ring-shaped member that engages with the action point portion of the lever portion is swingably connected to one end side of the latch member, It is preferable that a concave portion that engages with the ring-shaped member is provided in the action point portion of the lever portion.

  According to this configuration, the concave portion that engages with the ring-shaped member connected to one end of the latch member is provided at the action point portion of the lever portion. For this reason, even with respect to a brake cylinder device having a lock mechanism in which the latch member is pulled out by pulling out the ring member on one end side of the latch member, it is easy to engage the recess with the ring member. Parking brake manual release device can be installed.

  Further, the parking brake manual release device according to an aspect of the present invention is provided when the parking brake manual release device is mounted on the brake cylinder device installed in the vehicle or when the parking brake manual release device is attached. In addition, when the brake cylinder device is mounted on a vehicle, as a mark that regulates the length of the cable portion in order to adjust the length of the cable portion from the operation portion to a position where the brake cylinder device is connected to the lever portion. The adjustment mark portion used is further provided, wherein the adjustment mark portion discharges the pressure fluid from the second pressure chamber and releases the engagement between the latch member and the transmission mechanism so that the parking spring brake is used. Provided as a mark that defines the position of the lever relative to the cylinder body in the swinging direction when the mechanism is unlocked. It is preferred that the.

  According to this configuration, when the parking brake manual release device is installed on the brake cylinder device installed in the vehicle, or when the brake cylinder device to which the parking brake manual release device is attached is installed on the vehicle, The operator can adjust the length of the cable portion using the adjustment mark portion as a mark. The adjustment mark portion defines the position of the lever portion relative to the cylinder body in the swinging direction in a state of adjustment in which the pressure fluid is discharged from the second pressure chamber and the parking spring brake mechanism is unlocked. It is provided as a landmark. For this reason, the worker does not need to supply the pressure fluid to the second pressure chamber and adjust the parking spring brake mechanism to the non-operating state in order to adjust the length of the cable portion. Therefore, it is possible to easily adjust the length of the cable portion during the outfitting. And the occurrence of poor adjustment of the length adjustment of the cable part is also suppressed.

  Further, in the parking brake manual release device according to an aspect of the present invention, the adjustment mark portion is provided on the lever portion, and is a protrusion that can contact a predetermined position of the cylinder body or a member attached to the cylinder body. It is preferable that it is provided as a convex part formed in a shape or step.

  According to this configuration, at the time of outfitting, the operator makes the adjustment mark provided as a protrusion formed in a protruding shape or step shape abut on a predetermined position of the cylinder body or a member attached to the cylinder body. The length of the cable portion can be easily adjusted.

  Further, in the parking brake manual release device according to an aspect of the present invention, the adjustment mark portion is provided at the power point portion of the lever portion and one end portion of the cable portion, and the end portion is connected to the power point portion. An elongated hole provided in one of the coupling portions, and the other of the force-point portion and the coupling portion, and the inner side of the elongated hole along the longitudinal direction of the elongated hole. A pin portion provided in a displaceable pin shape, wherein the adjustment mark portion is supplied with pressure fluid to the second pressure chamber, and an end portion on the other end side of the latch member is connected to the transmission mechanism. One edge in the longitudinal direction of the elongated hole in the state of adjustment so that the lever portion that allows the latch member to move relative to the cylinder body can be swung when moving so as to engage. The lever portion is in contact with the pin portion and the pin portion. Which preferably defines the position relative to the cylinder body.

  According to this configuration, at the time of equipping, the operator can adjust the force point portion of the lever portion and the connection portion of the cable portion with respect to the edge portion of the elongated hole provided in one of the force point portion of the lever portion and the connection portion of the cable portion. The length of the cable portion can be easily adjusted by contacting the pin portion provided on the other side. Since the edge of the elongated hole and the pin are brought into contact with each other during adjustment, movement of the latch member relative to the cylinder body in the direction of engagement with the transmission mechanism is reliably permitted. The occurrence of poor adjustment is also reliably suppressed.

  Further, in the parking brake manual release device according to an aspect of the present invention, the direction in which one end of the cable portion moves so as to swing the lever portion when the operation portion is operated is the cylinder It is preferably set so as to extend along a direction parallel to the axial direction of the main body or along a direction parallel to the tangential direction of the outer periphery of the cylinder main body.

  According to this configuration, at the time of manual operation for releasing the operation of the parking spring brake mechanism, one end of the cable portion is along a direction parallel to the axial direction of the cylinder body or on the outer periphery of the cylinder body. The lever is swung along a direction parallel to the tangential direction. For this reason, even when the space limit in the direction orthogonal to the axial direction of the cylinder body is large, the cable portion can be easily installed by efficiently utilizing the space in the vicinity of the cylinder body.

  Further, in the parking brake manual release device according to an aspect of the present invention, the fulcrum portion is provided as a fulcrum shaft extending in a predetermined direction, and the action point portion is provided on one axial side of the fulcrum shaft, The force point portion is provided on the other axial side of the fulcrum shaft.

  For example, when the fulcrum part is not formed in the shape of a shaft and the lever part in which the fulcrum part, the force point part, and the action point part are formed on the same plane, the lever part cannot be arranged in a predetermined space in the railway vehicle. There is. On the other hand, according to this configuration, in the lever portion, the portion where the action point portion is formed and the portion where the force point portion is formed are arranged apart from each other in the axial direction of the fulcrum shaft. It may be possible to arrange in a space. That is, according to this configuration, it is possible to improve the degree of freedom of arrangement of the lever with respect to the railway vehicle.

  Moreover, the parking brake manual release device according to an aspect of the present invention is such that the lever portion is provided in the cylinder body in a state where the cylinder body is installed in the vehicle so that the axial direction of the cylinder body is along the vertical direction. It is arranged on the wheel side of the vehicle.

  In this way, in the space on the vehicle side in the cylinder body in a state where the cylinder body is installed in the vehicle so that the axial direction of the cylinder body is along the vertical direction, other members that are relatively large are installed. Sometimes. If it becomes so, it will become difficult to install this part in the said space.

  On the other hand, in this configuration, in the lever portion, the portion where the action point portion is formed and the portion where the force point portion is formed are arranged apart from each other in the axial direction of the fulcrum shaft. Therefore, the lever portion can be easily arranged in the relatively limited space as described above while avoiding interference with the other members.

  Further, in the parking brake manual release device according to an aspect of the present invention, the lever includes an action point side portion provided with the action point portion, a force point side portion provided with the force point portion, and the action point. A shaft portion that is formed integrally with the side portion and the force point side portion, and through which an insertion pin provided as the fulcrum shaft passes through the shaft center and is rotatably supported with respect to the cylinder body. .

  According to this configuration, the shaft portion rotates with respect to the cylinder body by operating the force point portion in a direction in which the shaft portion rotates about the insertion pin inserted through the shaft portion as a central axis. Then, the action point portion formed integrally with the shaft portion rotates and swings. Thereby, engagement with respect to the said transmission mechanism of a latch member can be cancelled | released with a lever part. That is, according to this configuration, a lever portion having a shape in which the force point portion and the action point portion are separated in the axial direction of the fulcrum shaft can be configured.

  Moreover, in the parking brake manual release device according to an aspect of the present invention, in the lever portion, the distance from the fulcrum portion to the force point portion and the distance from the fulcrum portion to the action point portion are the same. It is preferable that they are set as follows.

  According to this configuration, the lever portion is set such that the distance from the fulcrum portion to the force point portion is the same as the distance from the fulcrum portion to the action point portion. For this reason, the operation amount of the cable portion and the displacement amount of the latch member can be set to substantially the same amount. As a result, the operator can easily grasp the amount of pulling out of the latch member, and the operability can be further improved.

  In addition, a brake cylinder device according to an aspect of the present invention for achieving the above-described object has a first piston in which a first pressure chamber and a first spring are opposed to each other, and the first pressure chamber has a first piston. A fluid brake mechanism in which the first piston moves in a predetermined braking operation direction against the urging force of the first spring by supplying pressure fluid, and used when the vehicle is parked. A second piston acting opposite to the two springs, and the transition from the state in which the pressure fluid is supplied to the second pressure chamber to the state in which the second fluid is discharged causes the urging force of the second spring to A parking spring brake mechanism in which the second piston moves in the brake operation direction, a transmission mechanism for transmitting an urging force of the second piston in the brake operation direction to the first piston, the first pressure chamber, and the second Pressure chamber inside A latch member that protrudes outward from the cylinder body to be defined, and the other end side of the latch member engages with the transmission mechanism, whereby the first piston or the shaft portion is activated when the parking spring brake mechanism is operated. And a lock mechanism that locks the parking spring brake mechanism while operating the parking spring brake mechanism by restricting relative displacement to the second piston, and any one of the parking brake manual release devices described above, and is installed in the vehicle. In addition, both the fluid brake mechanism and the parking spring brake mechanism are operable.

  According to this configuration, the brake cylinder device can easily perform a manual operation for releasing the operation of the parking spring brake mechanism even when the space is limited in the direction orthogonal to the axial direction of the cylinder body. Can be provided.

  In addition, a brake device according to an aspect of the present invention for achieving the above-described object is provided in a vehicle, the above-described brake cylinder device, a rod driven in accordance with the operation of the brake cylinder device, and the rod And a brake output unit that is driven in conjunction with the brake and outputs a braking force.

  According to this configuration, the brake device that can easily perform a manual operation for releasing the operation of the parking spring brake mechanism even when the space is limited in the direction orthogonal to the axial direction of the cylinder body. Can be provided.

  According to the present invention, it is possible to easily perform a manual operation for releasing the operation of the parking spring brake mechanism even when the space is limited in the direction orthogonal to the axial direction of the cylinder body. A release device can be provided. A brake cylinder device and a brake device provided with the parking brake manual release device can be provided.

It is a figure including the partial cross section of the brake device which concerns on one embodiment of this invention. It is a figure which expands and shows a part of brake device shown in FIG. 1, Comprising: It is a figure which shows the brake cylinder apparatus which concerns on one embodiment of this invention. It is a figure which expands and shows a part of brake cylinder apparatus shown in FIG. It is a figure which expands and shows a part of brake device shown in FIG. 1, Comprising: It is a figure which shows the parking brake manual release apparatus which concerns on one embodiment of this invention, and its vicinity. It is a figure which shows a part of parking brake manual release apparatus in the brake device shown in FIG. 1, and its vicinity. It is a figure for demonstrating the action | operation of the brake device shown in FIG. It is a figure which shows a part of parking brake manual release apparatus in the brake device shown in FIG. 6, and its vicinity. It is a figure for demonstrating a modification, Comprising: It is a figure which shows a part of parking brake manual release apparatus in the brake device which concerns on a modification, and its vicinity. It is a figure which shows the example of an incorrect adjustment of a parking brake manual release apparatus. It is a figure for demonstrating a modification, Comprising: It is a figure which shows a part of parking brake manual release apparatus in the brake device which concerns on a modification, and its vicinity. It is a figure for demonstrating the action | operation of the parking brake manual release apparatus shown in FIG. It is a figure which shows the brake device which concerns on a modification. It is a figure which expands and shows a part of FIG. It is the figure which looked at the brake device shown in FIG. 12 from the arrow F direction of FIG. 12, Comprising: It is a figure which abbreviate | omits some component parts. It is a figure which shows the brake device which concerns on a modification. It is the figure which looked at the brake device shown in FIG. 15 from the arrow E direction of FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment, It is used for the brake cylinder apparatus which can operate | move both the fluid brake mechanism used at the time of driving | running | working of a vehicle, and the parking spring brake mechanism used at the time of parking of a vehicle. The parking brake manual release device for releasing the operation of the brake mechanism can be widely applied. The present invention can be widely applied to a brake cylinder device including the parking brake manual release device and a brake device including the brake cylinder device.

  Note that the parking brake manual release device, the brake cylinder device, and the brake device of the present embodiment will be described by taking as an example a case of being used for a railway vehicle. Moreover, although this embodiment demonstrates taking the form for which the brake device was comprised as a tread brake device as an example, it may not be this way. That is, the present invention can be applied to brake devices other than the tread brake device. For example, the present invention can be applied to a brake device configured as a disc brake device.

[Brake device]
FIG. 1 is a diagram including a partial cross section of a brake device 1 according to an embodiment of the present invention. FIG. 2 is an enlarged view of a part of the brake device 1 shown in FIG. 1, and is a view showing the brake cylinder device 2 according to one embodiment of the present invention. The brake device 1 shown in FIG.1 and FIG.2 is installed in the rail vehicle (vehicle in this embodiment) in which illustration was abbreviate | omitted. FIG. 1 is a view of the brake device 1 as viewed from the axle direction of the wheel 100 of the railway vehicle with the brake device 1 installed in the railway vehicle.

  As shown in FIGS. 1 and 2, the brake device 1 includes a brake cylinder device 2, a brake output unit 11, a rod 12, a rod support mechanism 13, a rod drive unit 14, and the like. The brake device 1 is configured as a tread brake device. And the brake output part 11 supported so that relative movement with respect to the brake cylinder apparatus 2 is driven by the brake cylinder apparatus 2 act | operates the brake device 1 via the rod drive part 14 and the rod 12, The brake force is output.

  The rod 12 is installed so as to extend along a direction orthogonal to the axle direction of the wheel 100. On the other hand, the brake cylinder device 2 is installed such that the axial direction of the cylinder body 23 extends along a direction substantially orthogonal to the direction in which the rod 12 extends. And in this embodiment, the brake cylinder apparatus 2 is installed so that the axial direction of the cylinder main body 23 may extend along the up-down direction of the railway vehicle in which the wheel 100 is provided.

  The brake output unit 11 is provided as a control, and the brake output unit 11 is driven in conjunction with the rod 12 to output a braking force. The brake output unit 11 includes a lining 15, a lining holding unit 16, and the like.

  The lining 15 is provided with a braking surface 15 a that can come into contact with the tread surface 100 a of the wheel 100. When the brake output unit 11 is driven by the rod 12, the braking surface 15 a of the lining 15 contacts and is pressed against the tread surface 100 a of the wheel 100. Then, the rotation of the wheel 100 is braked by the friction generated when the braking surface 15a is pressed against the tread surface 100a.

  The lining holding part 16 is provided as a member for holding the lining 15 to which the lining 15 is fixed. In addition, the lining holding portion 16 is swingably connected to the end portion on the distal end side of the rod 12. The tip end side of the rod 12 is arranged in a state of protruding from the cylinder body 23 of the brake cylinder device 2. Further, the lining holding portion 16 is also swingably connected to a hanger member 17 that is swingably connected to the cylinder body 23.

  The rod 12 is driven as the brake cylinder device 2 is operated, and is provided as a shaft member that transmits the output from the brake cylinder device 2 to the brake output unit 11. The rod 12 moves in a direction protruding from the cylinder body 23 (direction indicated by an arrow A in FIG. 2) in accordance with the operation when the brake cylinder device 2 outputs a braking force. Thereby, the rod 12 presses the lining 15 against the wheel 100 to generate a braking force. Further, the rod 12 moves in the direction of retreating to the cylinder body 23 (direction indicated by the arrow B in FIG. 2) with the operation when the brake cylinder device 2 releases the braking force. As a result, the rod 12 releases the braking force by separating the lining 15 from the wheel 100.

  The rod support mechanism 13 is installed inside the cylinder body 23. The rod support mechanism 13 is provided as a mechanism that supports the rod 12 so as to be swingable and displaceable with respect to the cylinder body 23. The rod support mechanism 13 includes an outer case portion 18, an inner case portion 19, a fixed roller 20, a movable roller 21, a return spring 22, and the like.

  The outer case portion 18 is configured to include a cylindrical portion. In this embodiment, the outer case portion 18 is configured by combining two cylindrical members in series. Inside the outer case portion 18 are accommodated an inner case portion 19, an end portion on the opposite side to the tip side connected to the brake output portion 11 of the rod 12, and the like. The outer case portion 18 is supported by the cylinder body 23 so as to be slidable along a direction parallel to the axial direction of the rod 12. The rod 12 is arranged so that its axial direction extends along a direction substantially orthogonal to the axle direction of the wheel 100.

  The inner case portion 19 is housed inside the outer case portion 18. The inner case portion 19 is provided with a screw hole 19a in which a screw groove is formed on the inner periphery of the outer periphery screw portion 12a provided on the outer periphery of the end portion opposite to the tip end side of the rod 12. Yes. The rod support mechanism 13 is provided with a position adjustment mechanism that displaces the relative position of the rod 12 with respect to the inner case portion 19 by displacing the screwing position of the outer peripheral screw portion 12a with the screw hole 19a.

  The inner case portion 19 is provided with a spherical outer peripheral curved surface b that forms a part of a spherical surface on the outer periphery thereof. The outer case portion 18 is provided with an inner peripheral curved surface 18 a that is slidable with respect to the outer peripheral curved surface 19 b of the inner case portion 19. The inner peripheral curved surface 18a is formed as a concave spherical curved surface that forms a part of a spherical surface, and is configured as a curved surface having a curvature corresponding to the curvature of the outer peripheral curved surface 19b. A spherical bearing is configured in the inner case portion 19 and the outer case portion 18 by the sliding outer peripheral curved surface 19b and inner peripheral curved surface 18a. By this spherical bearing, the inner case portion 19 is supported so as to be swingable with respect to the outer case portion 18, and the rod 12 is supported so as to be swingable with respect to the cylinder body 23.

  The fixed roller 20 is configured as a cylindrical roller whose relative position with respect to the cylinder body 23 is fixed and rotatably supported by the cylinder body 23. For example, a pair of fixed rollers 20 are provided on both sides of the outer case portion 18 in a direction perpendicular to the axial direction of the outer case portion 18, which is a direction parallel to the axial direction of the rod 12.

  The movable roller 21 is configured as a cylindrical roller that is rotatably supported on the outer side with respect to the wall portion of the outer case portion 18. For example, the movable roller 21 is provided as a pair on both sides of the outer case portion 18 in a direction perpendicular to the axial direction of the outer case portion 18. Each movable roller 21 is arranged away from each fixed roller 20 at a position where the outer periphery faces each fixed roller 20.

  Furthermore, the movable roller 21 is supported so as to roll relative to the cylinder body 23 and be relatively displaceable by rotating. The cylinder body 23 is provided with a guide portion (not shown) for rolling the movable roller 21 along a direction substantially parallel to the axial direction of the rod 12. The movable roller 21 may not be rotatably supported by the outer case portion 18. For example, the outer case portion 18 may be provided with an opening, and the movable roller 21 may be rotatably supported with respect to the inner case portion 19 through the opening.

  The return spring 22 is provided as a coil spring whose one end is in contact with the inner step of the cylinder body 23 and whose other end is in contact with the inner step of the outer case 18. ing. The return spring 22 is installed in a compressed state.

  Since the return spring 22 is installed as described above, the outer case portion 18 is separated from the wheel 100 with respect to the cylinder body 23 along a direction substantially parallel to the axial direction of the rod 12 (FIG. 2). In the direction of arrow B). The return spring 22 urges the outer case portion 18 in a direction away from the wheel 100, so that the inner case portion 19 and the rod 12 engaged with the outer case portion 18 are separated from the wheel 100 in a direction away from the wheel 100. Will be energized. Due to the urging force of the return spring 22, the rod 12 moves in the direction of retreating to the cylinder body 23 in accordance with the displacement of the rod drive unit 14 described later accompanying the operation when the brake cylinder device 2 releases the braking force. It will be.

  The rod drive unit 14 is provided as a member that drives the rod 12 via the rod support mechanism 13 in accordance with the operation of the brake cylinder device 2. The rod drive unit 14 is housed inside the cylinder body 23. And the rod drive part 14 is provided as a wedge body which has the wedge-shaped part 14a formed in the wedge shape. Moreover, the rod drive part 14 is being fixed with respect to the below-mentioned 1st piston 31 in the brake cylinder apparatus 2 in the base end part 14b from which the wedge-shaped part 14a protrudes.

  The wedge-shaped portion 14a is provided so as to protrude toward the rod support mechanism 13 from the base end portion 14b. The wedge-shaped portion 14a is formed in a tapered wedge shape from the base end portion 14b side toward the rod support mechanism 13 side. The distal end side of the wedge-shaped portion 14a, that is, the side opposite to the base end portion 14b side in the wedge-shaped portion 14a is disposed in a state of being inserted between the fixed roller 20 and the movable roller 21. In addition, the tip end side inserted between the fixed roller 20 and the movable roller 21 in the wedge-shaped portion 14 a is disposed so as to contact the outer periphery of the fixed roller 20 and the outer periphery of the movable roller 21. A plurality of wedge-shaped portions 14 a may be provided corresponding to each combination of the fixed roller 20 and the movable roller 21. One wedge-shaped portion 14 a may be provided corresponding to any one of a plurality of combinations of the fixed roller 20 and the movable roller 21.

  When the first piston 31 moves toward the rod support mechanism 13 as the brake cylinder device 2 outputs the braking force, the rod drive unit 14 moves toward the rod support mechanism 13 together with the first piston 31. To do. As the rod drive unit 14 moves, the fixed roller 20 that contacts the wedge-shaped portion 14 a rotates at the same position with respect to the cylinder body 23. On the other hand, the movable roller 21 in contact with the wedge-shaped portion 14a is urged toward the wheel 100 side (toward the direction of arrow A in FIG. 2) by the wedge-shaped portion 14a as the rod drive unit 14 moves.

  As described above, the movable roller 21 relatively moves toward the wheel 100 while rotating with respect to the cylinder body 23 while rotating. That is, with the movement of the rod drive unit 14, the movable roller 21 is driven by the wedge-shaped portion 14a so that the interval between the fixed roller 20 and the movable roller 21 is widened. And the outer case part 18, the inner case part 19, and the rod 12 move with the movable roller 21 toward the wheel 100 side. As a result, the lining 15 of the brake output unit 11 that moves together with the rod 12 comes into contact with the tread surface 100a of the wheel 100, and the rotation of the wheel 100 is braked.

[Brake cylinder device]
Next, the brake cylinder device 2 will be described in detail. FIG. 3 is an enlarged view showing a part of the brake cylinder device 2 shown in FIG. The brake cylinder device 2 is installed in the railway vehicle in a state of being incorporated in the brake device 1. 1 to 3, the brake cylinder device 2 includes a cylinder body 23, a fluid brake mechanism 24, a parking spring brake mechanism 25, a shaft portion 26, a transmission mechanism 27, a lock mechanism 28, and an embodiment of the present invention. The parking brake manual release device 3 according to the embodiment is provided. Each of the above-described mechanisms and the like in the brake cylinder device 2 is formed with, for example, a component made of a metal material such as an iron-based material as a main component.

  Moreover, in this embodiment, the brake cylinder apparatus 2 is comprised so that it may operate | move with the compressed air as a pressure fluid. That is, the fluid brake mechanism 24 and the parking spring brake mechanism 25 are configured to operate when compressed air is supplied and discharged as pressure fluid. The brake cylinder device 2 is configured as a device capable of operating both the fluid brake mechanism 24 and the parking spring brake mechanism 25.

  The cylinder body 23 has a cylindrical portion, and has a fluid brake mechanism 24, a parking spring brake mechanism 25, a shaft portion 26, a transmission mechanism 27, the rod support mechanism 13 described above, and the rod drive portion 14 described above. , Etc. The cylinder body 23 is provided with a lock mechanism 28, a parking brake manual release device 3, the brake output unit 11 described above, the rod 12 described above, and the like. And the cylinder main body 23 is fixed and installed in the bogie of a rail vehicle, for example. In addition, the axial direction of the cylinder body 23, the central axis direction of the first piston 31 of the fluid brake mechanism 24 described later, the central axis direction of the second piston 35 of the parking spring brake mechanism 25 described later, and the shaft portion 26 described later. The axial direction of the spindle 38 is configured as a coincident direction or a direction parallel to each other.

  The cylinder body 23 is provided with a first port 37a and a second port 37b. The first port 37a is connected to a first compressed air supply source (not shown) as a pressure fluid supply source. The second port 37b is connected to a second compressed air supply source (not shown) that is a pressure fluid supply source.

  Compressed air (pressure fluid) supplied from the first compressed air supply source is supplied to the first port 37a via a brake control device (not shown) that operates based on a command from a host controller (not shown). Is done. And the compressed air supplied in the cylinder main body 23 from the 1st port 37a is discharged | emitted via said brake control apparatus based on the instruction | command from said controller. The compressed air (pressure fluid) supplied from the second compressed air supply source is supplied to the second port 37b via a parking spring brake control electromagnetic valve (not shown) that operates based on the command from the controller. Supplied. And the compressed air supplied in the cylinder main body 23 from the 2nd port 37b is discharged | emitted via said parking spring brake control solenoid valve based on the instruction | command from said controller.

  The fluid brake mechanism 24 operates by supplying and discharging compressed air as pressure fluid. The fluid brake mechanism 24 is provided as a service brake mechanism used for a brake operation during operation of the railway vehicle. The fluid brake mechanism 24 includes a first pressure chamber 29, a first spring 30, a first piston 31, and the like.

  The first pressure chamber 29 is formed by being partitioned by the first piston 31 in the cylinder body 23. And the 1st pressure chamber 29 is connected to the 1st port 37a, and the compressed air from the above-mentioned 1st compressed air supply source is supplied. The compressed air supplied to the first pressure chamber 29 is discharged from the first port 37a.

  The first spring 30 is disposed in a region defined by the first piston 31 in the cylinder body 23, and is disposed so as to face the first pressure chamber 29 through the first piston 31. In the present embodiment, the first spring 30 is provided as a coil spring that is disposed in the cylinder body 23 in a compressed state and biases the first piston 31. The first spring 30 is disposed such that an end portion on one end side thereof abuts on the first piston 31 and biases the first piston 31. Further, the first spring 30 is supported in contact with a spring receiving plate 32 whose other end is fixed to the inner wall of the cylinder body 23.

  The first piston 31 is disposed so as to be able to reciprocate within the cylinder body 23 and is slidable relative to the inner wall of the cylinder body 23. The first piston 31 is configured to move against the urging force due to elastic recovery of the compressed first spring 30 when compressed air is supplied from the first port 37a to the first pressure chamber 29. Has been. Accordingly, the fluid brake mechanism 24 includes the first piston 31 in which the first pressure chamber 29 and the first spring 30 act to face each other, and the compressed air is supplied to the first pressure chamber 29 so that the first spring 31 is actuated. The first piston 31 is configured to move in a predetermined brake operating direction (the direction indicated by the arrow C in FIG. 3) against the urging force of 30.

  In addition, the base end portion 14 b of the rod driving unit 14 is fixed to the first piston 31 on the side opposite to the first pressure chamber 29 side. Accordingly, when the first piston 31 moves in the above-described brake operation direction, the rod drive unit 14 moves in the brake operation direction together with the first piston 31. The rod drive unit 14 moves in the brake operation direction together with the first piston 31, so that the rod 12 is driven via the rod support mechanism 13 described above. Thereby, a brake force is output from the brake output unit 11 driven by the rod 12.

  The parking spring brake mechanism 25 is provided as a parking brake mechanism that is used to maintain a brake state when the railway vehicle is parked. The parking spring brake mechanism 25 includes a second pressure chamber 33, a second spring 34, a second piston 35, and the like.

  The second pressure chamber 33 is formed by being partitioned by the second piston 35 in the cylinder body 23. And the 2nd pressure chamber 33 is connected to the 2nd port 37b, and the compressed air from the above-mentioned 2nd compressed air supply source is supplied. The compressed air supplied to the second pressure chamber 33 is discharged from the second port 37b.

  The second spring 34 is disposed in a region defined by the second piston 35 in the cylinder body 23, and is disposed so as to face the second pressure chamber 33 through the second piston 35. In the present embodiment, the second spring 34 is provided as a coil spring that is disposed in the cylinder body 23 in a compressed state and biases the second piston 35. The end of one end of the second spring 34 is supported in contact with the inner wall of the end of the cylinder body 23. Further, the second spring 34 is disposed such that the other end side abuts against the second piston 35 and biases the second piston 35. In the present embodiment, a plurality (two) of the second springs 34 are provided. The plurality of second springs 34 are arranged concentrically around the same central axis.

  The second piston 35 is disposed so as to be able to reciprocate within the cylinder body 23 and is slidable relative to the inner wall of the cylinder body 23. The second piston 35 is provided so as to be movable in the same direction as the first piston 31. The second piston 35 is operated by the brake operation described above against the urging force due to the elastic recovery of the compressed second spring 34 by supplying compressed air from the second port 37b to the second pressure chamber 33. It is configured to move in the brake release direction (direction indicated by arrow D in FIG. 3) opposite to the direction. On the other hand, in the second piston 35, the compressed air supplied into the second pressure chamber 33 is discharged through the second port 37b, so that the urging force of the second spring 34 causes the brake operation direction (arrow C in FIG. 3). (Direction indicated by). Accordingly, the parking spring brake mechanism 25 has the second piston 35 in which the second pressure chamber 33 and the second spring 34 face each other, and is discharged from a state in which compressed air is supplied to the second pressure chamber 33. The second piston 35 is configured to move in the brake operating direction by the urging force of the second spring 34 by shifting to the state in which it is performed.

  An end portion of the second piston 35 that faces the second pressure chamber 33 is formed as a ring-shaped end portion that extends along the circumferential direction of the cylinder body 23. On the other hand, the cylinder main body 23 is provided with an inner cylindrical portion 36 that is formed in a cylindrical shape along the circumferential direction inside the ring-shaped end portion of the second piston 35. The ring-shaped end portion of the second piston 35 is arranged so as to slide with respect to the inner wall of the cylinder body 23 and also with respect to the outer periphery of the inner cylindrical portion 36.

  The shaft portion 26 includes a spindle 38, a bearing 39, and the like. The shaft portion 26 is connected to the first piston 31 at the end of the spindle 38 and is provided so as to be displaced together with the first piston 31.

  The spindle 38 is disposed so as to protrude in the brake releasing direction, which is the opposite side to the side on which the rod driving unit 14 is fixed so as to protrude toward the brake operating direction with respect to the first piston 31. . The spindle 38 is provided as an axial member formed separately from the first piston 31. The spindle 38 is configured to transmit an urging force from the parking spring brake mechanism 25 to the first piston 31 together with a transmission mechanism 27 described later.

  Further, the spindle 38 is provided with a convex stepped portion 38 a extending in the circumferential direction along the outer periphery at the end connected to the first piston 31. A concave portion is provided in the central portion of the first piston 31 in the radial direction, and a spindle holding portion 31a formed in an edge shape that engages with the step portion 38a is provided on the inner periphery of the concave portion. Is provided. The spindle holding portion 31a of the first piston 31 engages with a step portion 38a at the end of the spindle 38 when the first piston 31 moves in the brake operation direction, and urges the spindle 38 in the brake operation direction.

  The bearing 39 is provided as a ball-shaped member, for example, and is configured as a bearing that receives a thrust load acting on the spindle 38 by an urging force from the parking spring brake mechanism 25. And the bearing 39 is arrange | positioned in said recessed part provided in the center part of the 1st piston 31, and is arrange | positioned in the state contact | abutted to both between the edge part of the spindle 38, and the 1st piston 31. . The biasing force from the parking spring brake mechanism 25 is transmitted to the first piston 31 via a transmission mechanism 27, a spindle 38, and a bearing 39, which will be described later.

  The transmission mechanism 27 is provided as a mechanism that transmits the urging force of the second piston 35 in the braking operation direction of the parking spring brake mechanism 25 to the shaft portion 26 that is displaced together with the first piston 31. The transmission mechanism 27 is configured as a mechanism including a meshing clutch mechanism. The transmission mechanism 27 includes a screw portion 40, a clutch wheel 41, a clutch sleeve 42, a clutch box 43, and the like.

  The transmission mechanism 27 is disposed on the inner side in the radial direction of the second piston 35. The second piston 35 is provided with an inner cylindrical portion 35a that divides a cylindrical region in a state where the opposite side to the fluid brake mechanism 24 side is closed with respect to the outside on the inner side in the radial direction. And a part of transmission mechanism 27 is arrange | positioned in the cylindrical area | region inside the inner cylindrical part 35a.

  The screw portion 40 is provided as a male screw portion formed integrally with the spindle 38. The threaded portion 40 is formed on the outer periphery of the portion of the spindle 38 opposite to the side connected to the first piston 31.

  The clutch wheel 41 is provided as a cylindrical nut member that is screwed into the screw portion 40. The clutch wheel 41 and the spindle 38 provided with the screw portion 40 are arranged concentrically around the same central axis. The clutch wheel 41 is provided with a female screw portion that is screwed into the screw portion 40 on the inner periphery. The clutch wheel 41 is disposed inside a clutch box 43 formed in a cylindrical shape, and is rotatably supported by the clutch box 43 via a pair of bearings 44. As a result, the clutch wheel 41 rotates relative to the spindle 38 in the axial direction while changing the relative position where the clutch wheel 41 is screwed to the threaded portion 40 as the spindle 38 and the clutch box 43 move relative to each other. It is configured to be possible.

  The clutch sleeve 42 is provided as a cylindrical member and is disposed inside the clutch box 43. The clutch sleeve 42 is slidably supported with respect to the clutch box 43 along a direction parallel to the axial direction of the spindle 38. The clutch sleeve 42 is disposed on the opposite side of the first piston 31 with respect to the clutch wheel 41. The end of the clutch sleeve 42 in the brake operating direction (the end on the first piston 31 side) is opposite to the end of the clutch wheel 41 in the brake releasing direction (the end opposite to the first piston 31 side). Opposed to each other.

  Further, the end of the clutch sleeve 42 in the brake releasing direction, that is, the end of the clutch sleeve 42 opposite to the side facing the clutch wheel 41 is connected to the inner cylindrical portion 35a of the second piston 35 via the bearing 45. Is supported against the end of the. The bearing 45 is provided as a thrust bearing that transmits the urging force of the second piston 35 to the clutch sleeve 42. The bearing 45 supports the end of the clutch sleeve 42 so as to be rotatable about the central axis of the spindle 38 with respect to the second piston 35.

  Further, a rotation stop mechanism 46 is provided at the end portions of the clutch sleeve 42 and the clutch wheel 41 facing each other. The anti-rotation mechanism 46 is composed of uneven teeth 46 a provided on the clutch wheel 41 and uneven teeth 46 b provided on the clutch sleeve 42. The concave and convex teeth 46 a are formed at the end of the clutch wheel 41 facing the clutch sleeve 42, and are provided over the circumferential direction of the end of the clutch wheel 41. The concave and convex teeth 46 b are formed at the end of the clutch sleeve 42 facing the clutch wheel 41, and are provided along the circumferential direction of the end of the clutch sleeve 42. The concavo-convex teeth 46a and the concavo-convex teeth 46b are formed as teeth that mesh with each other when the end of the clutch wheel 41 and the end of the clutch sleeve 42 that face each other come into contact with each other.

  When the second piston 35 moves in the brake operating direction and moves relative to the spindle 38, the clutch sleeve 42 also moves relative to the spindle 38 together with the second piston 35. The clutch sleeve 42 contacts the clutch wheel 41 that is screwed to the spindle 38. At this time, the concave and convex teeth 46a of the clutch wheel 41 and the concave and convex teeth 46b of the clutch sleeve 42 mesh with each other. The clutch sleeve 42 can be displaced only in the axial direction with respect to the clutch box 43, and the displacement in the rotational direction is restricted. For this reason, when the concavo-convex teeth 46 a and the concavo-convex teeth 46 b mesh, the relative rotation of the clutch wheel 41 with respect to the clutch box 43 is restricted and stopped. Thus, the rotation stop mechanism 46 is provided as a mechanism for stopping the rotation of the clutch wheel 41.

  The clutch box 43 is provided as a cylindrical member in which the screw portion 40, the clutch wheel 41, and the clutch sleeve 42 are disposed on the inner side. The clutch box 43 is disposed inside the cylinder body 23 and inside the inner cylindrical portion 36 of the cylinder body 23 and the inner cylindrical portion 35 a of the second piston 35. The clutch box 43 extends along a direction parallel to the axial direction of the spindle 38 with respect to the inner circumference of the inner cylindrical portion 36 of the cylinder body 23 and the inner circumference of the inner cylindrical portion 35a of the second piston 35. It is slidably supported. Further, the clutch box 43 has an inner periphery of the inner cylindrical portion 36 of the cylinder body 23 and an inner cylindrical portion 35a of the second piston 35 in a state where a latch member 49 of the lock mechanism 28 described later is not engaged. It is slidably supported in the circumferential direction with respect to the circumference. That is, in the above state, the clutch box 43 is supported by the cylinder body 23 and the second piston 35 so as to be rotatable about the central axis of the spindle 38.

  Further, the clutch box 43 is provided with a stepped portion 43a extending along the inner periphery on the inner side. The pair of bearings 44 described above is attached to the stepped portion 43a. As a result, the clutch box 43 holds the clutch wheel 41 rotatably via the pair of bearings 44.

  Further, the inner periphery of the clutch box 43 is slidably in contact with the outer periphery of the clutch sleeve 42. The clutch box 43 supports the clutch sleeve 42 on the inner side so as to be slidable along a direction parallel to the axial direction of the spindle 38. The clutch box 43 is provided with a protruding protrusion 43b protruding inward. The end of the protrusion 43b protruding inward from the inner periphery of the clutch box 43 is slidable with respect to a groove formed to extend in the direction parallel to the axial direction of the spindle 38 on the outer periphery of the clutch sleeve 42. It is inserted. Accordingly, when the clutch sleeve 42 slides in the direction parallel to the axial direction of the spindle 38 with respect to the clutch box 43, the sliding movement direction is guided.

  The relative positions of the clutch box 43 with respect to the cylinder body 23 and the second piston 35 are adjusted by position adjusting springs (47a, 47b). The position adjustment spring 47a and the position adjustment spring 47b urge the clutch box 43 in opposite directions to adjust the relative positions of the clutch box 43 with respect to the cylinder body 23 and the second piston 35.

  More specifically, the position adjustment spring 47 a is provided as a coil spring in a compressed state, and is disposed inside the clutch box 43 on the end side in the brake operation direction of the clutch box 43. The position adjustment spring 47 a is supported at the end in the brake operation direction with respect to the cylinder body 23. More specifically, the end portion of the position adjusting spring 47a in the brake operating direction extends along the circumferential direction of the inner periphery of the inner cylindrical portion 36 and supports the flange-shaped portion 36a that protrudes inward from the inner periphery. Has been. On the other hand, the end of the position adjustment spring 47 a in the brake release direction is supported by the stepped portion 43 a of the clutch box 43. With the above configuration, the position adjusting spring 47 a biases the clutch box 43 in the brake release direction with respect to the cylinder body 23.

  The position adjustment spring 47 b is provided as a compressed coil spring, and is disposed outside the clutch box 43 on the end side in the brake release direction of the clutch box 43. The position adjustment spring 47 b is supported by the clutch box 43 at the end in the brake operation direction. More specifically, the end of the position adjusting spring 47 b in the brake operating direction is in contact with the ring 43 c attached to the outer periphery of the cylindrical portion of the clutch box 43 and is supported by the clutch box 43. On the other hand, the end of the position adjustment spring 47b in the brake release direction is supported with respect to the second piston 35. More specifically, the end portion of the position adjustment spring 47b in the brake releasing direction is supported in contact with a stepped portion formed on the inner cylindrical portion 35a of the second piston 35. With the above configuration, the position adjustment spring 47 b biases the clutch box 43 in the brake operation direction with respect to the second piston 35.

  As described above, the position adjustment spring 47b biases the clutch box 43 toward the position adjustment spring 47a in the direction opposite to the position adjustment spring 47a. These position adjustment springs (47a, 47b) adjust the relative positions of the clutch box 43 with respect to the cylinder body 23 and the second piston 35.

  A separation spring 48 is installed between the step 43a of the clutch box 43 and the end of the clutch sleeve 42 in the brake operation direction. The separation spring 48 is provided as a coil spring in a compressed state. The separation spring 48 is provided as a spring that urges the concave and convex teeth 46 a of the clutch wheel 41 and the concave and convex teeth 46 b of the clutch sleeve 42 in a direction to separate them from each other.

  FIG. 4 is an enlarged view showing a part of the brake device 1 shown in FIG. 1, and is a view showing the parking brake manual release device 3 and the vicinity thereof. In FIG. 4, a part of the lock mechanism 28 in the brake cylinder device 2 is also illustrated.

  The lock mechanism 28 shown in FIGS. 1 to 4 has a latch member 49 whose one end protrudes outward from the cylinder body 23 that divides the first pressure chamber 29 and the second pressure chamber 33 inside. The lock mechanism 28 restricts the relative displacement of the shaft portion 26 relative to the second piston 35 when the parking spring brake mechanism 25 is operated by engaging the other end side of the latch member 49 with the clutch box 43 of the transmission mechanism 27. The parking spring brake mechanism 25 is configured to be in a locked state while being operated. Further, the lock mechanism 28 further includes a latch urging spring 50, a latch lock pin 51, and the like.

  The latch member 49 is arranged such that its longitudinal direction extends along a direction orthogonal to the axial direction of the cylinder body 23, that is, along the radial direction of the cylinder body 23. The latch member 49 is supported with respect to the cylinder body 23 so as to be slidable along the radial direction of the cylinder body 23.

  Further, the latch member 49 is arranged in a state in which an end portion on one end side in the longitudinal direction protrudes outward from the cylinder body 23. Note that one end side of the latch member 49 is supported by a drop-off prevention member 52 that is attached to the cylinder body 23 and prevents the latch member 49 from dropping out of the cylinder body 23. The dropout prevention member 52 is provided with a through hole through which one end of the latch member 49 passes. On the other end side of the latch member 49, a step portion 49 a is provided that expands in a step shape so that the size is larger than the diameter size of the through hole of the drop-off prevention member 52. This prevents the latch member 49 from passing through the through-hole of the drop-off prevention member 52 and dropping out of the cylinder body 23.

  The latch member 49 is provided with an engagement blade 49b that engages with a latch blade 43d provided in the clutch box 43 at the tip of the end portion on the other end side in the longitudinal direction. The latch blade 43 d is provided as a blade that meshes with and engages with the engagement blade 49 b of the latch member 49. A large number of latch blades 43d are provided along the outer periphery of the end of the clutch box 43 in the brake operation direction.

  The latch blade 43d and the engagement blade 49b are configured such that the blade tips extend along a direction parallel to the axial direction of the spindle 38. The engagement blade 49b is engaged with any one of the latch blades 43d, so that the state in which the relative rotation of the clutch box 43 with respect to the cylinder body 23 is stopped is maintained. That is, the rotation of the clutch box 43 around the central axis of the spindle 38 within the cylinder body 23 is restricted by the engagement between the latch blade 43d and the engagement blade 49b. As long as the engagement between the latch blade 43d and the engagement blade 49b is not released, the state in which the rotation of the clutch box 43 is stopped is maintained.

  The latch biasing spring 50 is provided as a spring that biases the latch member 49 toward the inside of the cylinder body 23. The latch biasing spring 50 is provided as a coil spring disposed around the latch member 49 in a compressed state in the longitudinal direction of the latch member 49. The latch urging spring 50 has one end portion disposed on one end side of the latch member 49 and the other end portion disposed on the other end side of the latch member 49. More specifically, one end of the latch urging spring 50 is in contact with and supported by a drop-off prevention member 52 attached to the cylinder body 23. The other end of the latch urging spring 50 is in contact with and supported by the stepped portion 49 a of the latch member 49.

  As described above, the latch biasing spring 50 is configured to bias the latch member 49 toward the clutch box 43 with respect to the cylinder body 23. That is, the latch biasing spring 50 is configured to bias the engagement blade 49 b of the latch member 49 in a direction in which the latch blade 49 is engaged with the latch blade 43 d of the clutch box 43.

  The latch lock pin 51 is provided as a pin-shaped member, and is arranged so that its longitudinal direction extends in parallel with the axial direction of the spindle 38. The latch lock pin 51 is slidably supported on the cylinder body 23 along a direction parallel to the axial direction of the spindle 38. In the present embodiment, the axial direction of the cylinder body 23, the axial direction of the spindle 38, and the longitudinal direction of the latch lock pin 51 are set so as to face the vertical direction, that is, the vertical direction. Therefore, the latch lock pin 51 is supported so as to be slidable with respect to the cylinder body 23 in the direction of dropping downward due to gravity.

  Further, the latch lock pin 51 is inserted into a through hole 49 c provided in the latch member 49 at the end, that is, the lower end side in the brake operation direction. The through hole 49 c of the latch member 49 is formed on the other end side of the latch member 49 where the engagement blade 49 b is provided, and is formed so as to penetrate the latch member 49 along a direction parallel to the axial direction of the spindle 38. Yes.

  The latch member 49 is provided with a protruding lock pin push-up portion 49d that protrudes toward the center of the through hole 49c. A tapered surface 51 a is provided at an end portion of the latch lock pin 51 in the brake operation direction so as to spread in an oblique direction with respect to the axial direction of the spindle 38. The tapered surface 51a is disposed in the through hole 49c of the latch member 49 so as to be able to contact the lock pin push-up portion 49d. Thus, when the latch member 49 is urged by the latch urging spring 50 and moves toward the clutch box 43, the lock pin push-up portion 49d slides with respect to the tapered surface 51a, so that the latch lock pin 51 is It will be pushed up.

  On the other hand, when the latch brake 49 moves in a direction away from the clutch box 43 against the biasing force of the latch biasing spring 50 by operating the parking brake manual release device 3 described later, the latch lock pin 51 is Then, it drops a predetermined distance and moves downward through the through hole 49c. The cylinder body 23 is a portion that supports the latch member 49 so as to be slidable, and a relief hole 53 is provided at a position facing the lower end portion (end portion in the brake operation direction) of the latch lock pin 51. It has been. For this reason, when the latch lock pin 51 moves through the through hole 49 c as described above, the lower end portion of the latch lock pin 51 provided with the tapered surface 51 a is inserted into the escape hole 53. . Note that the end portion of the latch lock pin 51 inserted into the escape hole 53 is in contact with and supported by the first piston 31.

  In addition, the latch lock pin 51 is provided in a stepped manner with respect to the inner cylindrical portion 35a of the second piston 35 at the end in the brake release direction, that is, the upper end in a state where the parking spring brake mechanism 25 is activated. It arrange | positions so that it may contact | abut with respect to the ring-shaped edge part. In the state where the parking spring brake mechanism 25 is activated, the second spring 34 biases the second piston 35, so that either the parking brake manual release device 3 is not operated or is operated. Even in the state, the upper end portion of the latch lock pin 51 abuts against the second piston 35. When the parking brake manual release device 3 is once operated after the parking spring brake mechanism 25 is activated, the latch lock pin 51 is in a state where the lower end portion is inserted into the escape hole 53 and the upper end portion is the second piston. 35 is brought into contact with 35.

  As a result, the latch lock pin 51 is prevented from being pushed back upward even when the operating force applied to the parking brake manual release device 3 is lost. That is, even if the lock pin push-up portion 49d of the latch member 49 that transmits the bias force of the latch bias spring 50 biases the tapered surface 51a, the latch lock pin 51 is prevented from being pushed upward. Thus, the latch lock pin 51 prevents the latch member 49 from moving toward the clutch box 43. Then, the engagement blade 49 b of the latch member 49 is prevented from engaging with the latch blade 43 d of the clutch box 43.

  The transmission mechanism 27 and the lock mechanism 28 are configured as described above. Thus, when the parking spring brake mechanism 25 is operated, the spindle 38 and the second piston 35 are connected by the transmission mechanism 27. That is, when the parking spring brake mechanism 25 is activated when the compressed air is supplied to the second pressure chamber 33 and is discharged, the clutch sleeve together with the second piston 35 is urged by the urging force of the second spring 34. 42 moves relative to the spindle 38. When the second piston 35 moves with respect to the spindle 38, the concave and convex teeth 46b of the clutch sleeve 42 and the concave and convex teeth 46a of the clutch wheel 41 are engaged with each other. Thereby, the rotation of the clutch wheel 41 is stopped, and the spindle 38 and the second piston 35 are connected to each other. The parking spring brake mechanism 25 is operated in a state where the fluid brake mechanism 24 is operated. That is, in a state where the compressed air in the first pressure chamber 29 is supplied and the fluid brake mechanism 24 is activated, the compressed air is discharged from the second pressure chamber 33 and the parking spring brake mechanism 25 is activated.

  As described above, when the parking spring brake mechanism 25 is activated and the spindle 38 and the second piston 35 are connected, the latch member of the lock mechanism 28 is operated unless the parking brake manual release device 3 is operated. 49 is engaged with the transmission mechanism 27. As a result, the lock mechanism 28 is configured to restrict the relative displacement of the spindle 38 with respect to the second piston 35 and keep the parking spring brake mechanism 25 in the locked state.

  That is, the engagement blade 49 b of the latch member 49 urged by the latch urging spring 50 is engaged with the latch blade 43 d of the clutch box 43, so that the second piston 35 and the cylinder main body 23 of the clutch box 43 are engaged. Rotation is regulated. Then, the rotation of the clutch sleeve 42 with respect to the clutch box 43 is restricted by the engagement between the protrusion 43 b of the clutch box 43 and the groove of the clutch sleeve 42. Furthermore, the relative rotation between the clutch wheel 41 and the clutch sleeve 42 is restricted by the engagement of the uneven teeth 46b and the uneven teeth 46a, and the relative rotation of the spindle 38 with respect to the clutch wheel 41 is also restricted. As described above, the lock mechanism 28 is configured to restrict the relative displacement of the spindle 38 with respect to the second piston 35 via the transmission mechanism 27 and keep the parking spring brake mechanism 25 in the locked state. .

  On the other hand, the transmission mechanism 27 connects the spindle 38 and the second piston 35 in a state where the operation of the parking spring brake mechanism 25 is released, that is, in a state where compressed air is supplied to the second pressure chamber 33. It is configured to be in a disconnected state. That is, in a state where compressed air is supplied to the second pressure chamber 33, the uneven teeth 46b of the clutch sleeve 42 and the uneven teeth 46a of the clutch wheel 41 are not engaged with each other. For this reason, the clutch wheel 41 is in a rotatable state with respect to the clutch box 43, and is in a disconnected state in which the connection between the spindle 38 and the second piston 35 is released.

[Parking brake manual release device]
Next, the parking brake manual release device 3 will be described in detail. The parking brake manual release device 3 shown in FIGS. 1 to 4 is used for the brake cylinder device 2. The parking brake manual release device 3 may be incorporated into the new brake cylinder device 2 or may be attached to the existing brake cylinder device 2.

  The parking brake manual release device 3 is operated by a manual operation, thereby allowing the relative displacement of the shaft portion 26 with respect to the second piston 35 to release the locked state of the parking spring brake mechanism 25 by the lock mechanism 28, and the parking spring. A device for releasing the operation of the brake mechanism 25 is provided. The parking brake manual release device 3 includes a lever portion 54, a cable portion 55, an operation portion 56, an attachment portion 57, and the like.

  FIG. 5 is a view showing a part of the parking brake manual release device 3 in the brake device 1 shown in FIG. 1 and the vicinity thereof. As shown in FIGS. 4 and 5, the lever portion 54 is provided as a member connected to the lever support member 57 a of the attachment portion 57 attached to the cylinder body 23 so as to be swingable in the rotation direction. For example, the lever portion 54 is provided as a member in which a fulcrum portion 54a, a force point portion 54b, an action point portion 54c, and the like are integrally formed with respect to a plate-shaped main body portion.

  The fulcrum portion 54a is connected to a lever support member 57a, which is a member attached to the cylinder body 23, via a rotation shaft. Thereby, the fulcrum part 54a is rotatably connected with respect to the lever support member 57a.

  The force point portion 54b is connected to one end portion of the cable portion 55 described later via a rotation shaft. As a result, an operating force applied to the operation unit 56 described later and transmitted via the cable unit 55 is transmitted to the force point portion 54b.

  The action point portion 54 c is connected to one end side of the latch member 49 via a ring-shaped member 58. The ring-shaped member 58 has, for example, a ring-shaped portion formed so that the wire is wound around a plurality of circumferences, and is connected to the latch member 49 and the action point portion 54 c of the lever portion 54. Is provided. The ring-shaped member 58 is attached to one end side of the latch member 49 so as to be locked in a loosely fitted state in a through hole provided on one end side of the latch member 49. Accordingly, the ring-shaped member 58 is swingably connected to one end side of the latch member 49.

  Further, the ring-shaped member 58 is installed inside the ring-shaped portion so as to engage with the action point portion 54 c of the lever portion 54. The action point portion 54 c is provided with a recess 54 d that engages with the inside of the ring-shaped portion of the ring-shaped member 58. The ring-shaped member 58 and the lever portion 54 are connected by engaging a part of the ring-shaped portion of the ring-shaped member 58 inside the ring-shaped portion 58 so as to be fitted and caught in the recess 54d. In the present embodiment, the concave portion 54d is formed of a protruding portion bent like a bowl in the action point portion 54c.

  When an operation force applied to the operation unit 56 (described later) and transmitted through the cable unit 55 is transmitted to the force point portion 54b, the lever portion 54 swings in the rotation direction around the fulcrum portion 54a. To do. Thereby, the action point portion 54 c is displaced so as to pull the ring-shaped member 58 toward the outside of the cylinder body 23. When the ring-shaped member 58 is displaced toward the outside of the cylinder body 23 so as to be separated from the cylinder body 23, one end side of the latch member 49 connected to the ring-shaped member 58 is pulled out toward the outside of the cylinder body 23. Will be.

  As described above, the lever portion 54 is driven by the operating force transmitted through the cable portion 55 and swings with respect to the lever support member 57a. The lever portion 54 swings with respect to the lever support member 57 a, thereby pulling out one end side of the latch member 49 toward the outside of the cylinder body 23 and engaging the transmission mechanism 27 on the other end side of the latch member 49. It is configured to cancel the connection. Note that when the engagement of the latch member 49 with the transmission mechanism 27 on the other end side is released, the operating force transmitted to the lever portion 54 acts in a direction opposite to the biasing force of the latch biasing spring 50. As a result, the latch member 49 is pulled out toward the outside of the cylinder body 23 against the urging force of the latch urging spring 50.

  Further, the lever portion 54 is set such that the distance from the fulcrum portion 54a to the force point portion 54b is the same as the distance from the fulcrum portion 54a to the action point portion 54c. More specifically, the distance from the swing center position with respect to the lever support member 57a in the fulcrum portion 54a to the swing center position with respect to the end of the cable portion 55 in the force point portion 54b, and the above-described swing center position in the fulcrum portion 54a. The distance to the center position of the recess 54d in the action point portion 54c is set to be the same.

  The cable portion 55 is provided as a mechanism for transmitting the operation force applied to the operation portion 56 and swinging the lever portion 54. A force point portion 54 b of the lever portion 54 is connected to one end portion of the cable portion 55. An operation unit 56 that is operated by a manual operation is attached to the other end of the cable unit 55. 4 and 5, the cable portion 55 includes a wire cable 55a, a cable guide 55b, a lever connection side rod 55c, a handle connection side rod 55d, a lever connection portion 55e, and the like.

  The wire cable 55a is provided, for example, as a cable in which a plurality of metal wires are twisted in a rope shape and integrated. And one end part in the wire cable 55a is arrange | positioned at the side of the cylinder main body 23, and the lever connection side rod 55c is being fixed. The lever connecting side rod 55c is provided as an axial member. The lever connecting side rod 55c is connected to the lever portion 54 via a lever connecting portion 55e at the end opposite to the side fixed to the wire cable 55a.

  The other end of the wire cable 55a is disposed away from the cylinder body 23, and the handle connecting side rod 55d is fixed thereto. The handle connection side rod 55d is provided as an axial member. The handle connecting side rod 55d is fixed to the handle 56a of the operation unit 56 at the end opposite to the side fixed to the wire cable 55a.

  The cable guide 55b is provided as an elongated cylindrical guide member that guides the movement of the wire cable 55a in the longitudinal direction. A wire cable 55a is inserted through an elongated through hole inside the cable guide 55b extending along the longitudinal direction of the cable guide 55b. As described above, the cable guide 55b is configured to guide the movement of the wire cable 55a in the direction along the longitudinal direction of the cable guide 55b when the operation unit 56 is operated. Further, the cable guide 55b is formed to be bent so that the longitudinal direction of the cable guide 55b changes along the direction of curvature while being curved along a predetermined radius of curvature. Thereby, the wire cable 55a also moves along the bending direction of the cable guide 55b. In the present embodiment, the cable guide 55b is illustrated with an example in which the longitudinal direction of the cable guide 55b extends along a predetermined curvature radius while changing the direction by approximately 90 degrees.

  The lever connecting portion 55e is provided as a mechanism for connecting the lever connecting side rod 55c fixed to one end of the wire cable 55a and the force point portion 54b of the lever portion 54. The lever connecting portion 55e includes a case 59a, a nut 59b, and the like.

  The case 59a is provided as a member in which a space region into which the end of the connecting rod 55c is inserted is formed on the inner side. The case 59a is connected to the power point portion 54b of the lever portion 54 so as to be swingable via a rotating shaft. Thereby, the lever connection side rod 55c and the power point portion 54b are connected to each other so as to be swingable.

  The case 59a is provided with an insertion port into which the lever connecting side rod 55c is inserted. And the internal thread part is provided in the inner periphery of this insertion port. On the other hand, a male screw portion that is screwed into the female screw portion is provided at an end portion of the lever connection side rod 55c that is inserted into the insertion port of the case 59a. The case 59a and the lever connection side rod 55c are connected to each other by screwing the female screw portion of the insertion port of the case 59a and the male screw portion of the end portion of the lever connection side rod 55c.

  Further, the length of the lever connecting side rod 55c exposed to the outside from the case 59a is adjusted by adjusting the screwing position of the female screw portion of the insertion opening of the case 59a and the male screw portion of the end portion of the lever connecting side rod 55c. Will be adjusted. Thereby, the length from the operating portion 56 to the case 59a, which is defined by the handle connection side rod 55d, the wire cable 55a, and the lever connection side rod 55c, is adjusted. That is, the length of the cable portion 55 from the operation portion 56 to the position where it is connected to the lever portion 54 is adjusted by adjusting the screwing position of the female screw portion and the male screw portion.

  The nut 59b is provided as a nut provided with a female screw portion that is screwed to the male screw portion of the lever connection side rod 55c at a position outside the case 59a. The nut 59b is in a state where the male thread portion of the lever connecting side rod 55c is screwed into the female thread portion of the insertion opening of the case 59a and the screwing position is adjusted, with respect to the male thread portion of the lever connecting side rod 55c. A screwing position is defined. At this time, the screwing position of the nut 59b with respect to the threaded portion of the lever connecting side rod 55c is adjusted so that the end of the nut 59b contacts and is tightened toward the case 59a. That is, the male thread portion of the lever connecting side rod 55c is screwed and fixed to the female thread portion of the case 59a and the nut 59b that contacts the case 59a. Thereby, it is prevented that the position of the lever connecting side rod 55c with respect to the case 59a is shifted.

  The position adjustment and fixing form of the lever connection side rod 55c with respect to the case 59a need not be limited to the above form. For example, the internal thread of the insertion opening of the case 59a is not provided with a female thread portion, and the nut 59b and other nuts that are disposed inside the case 59a and are screwed into the threaded portion of the lever connection side rod 55c. The position of the lever connecting side rod 55c relative to the case 59a may be adjusted and fixed.

  The operation portion 56 is provided as a portion that is operated by a manual operation when the operation of the parking spring brake mechanism 25 is released by the parking brake manual release device 3. The operation unit 56 includes a handle 56a, a slide support unit 56b, and the like.

  The handle 56a is provided as a portion to which a pulling operation is applied by an operator's hand (not shown). And the handle | steering-wheel 56a is formed in the shape by which the part extended in the shape of an umbrella with respect to the axial part was provided so that it might be easily caught between fingers of a hand, for example.

  In addition, a hole that extends along the axial direction and into which the end of the handle connection side rod 55d is inserted is formed in the shaft-like portion of the handle 56a. Furthermore, the umbrella-shaped portion of the handle 56a is formed with a through hole that communicates with the hole inside the shaft-shaped portion of the handle 56a. A screw member 60 provided with a male screw portion is inserted into the through hole. Further, the handle connecting side rod 55d is screwed into the screw member 60 at the end opposite to the side fixed to the wire cable 55a and inserted into the hole of the shaft-like portion of the handle 56a. A screw hole having a screw portion provided on the inner periphery is formed. Then, in a state where the handle connection side rod 55d is inserted into the hole of the shaft-like portion of the handle 56a, the screw member 60 passes through the through-hole of the umbrella-like portion of the handle 56a and the end of the handle connection side rod 55d. The handle 56a and the handle connection side rod 55d are fixed by being screwed into the screw holes of the portions.

  The support portion 56b is provided as a mechanism for supporting the handle 56a and the other end portion of the cable portion 55 with respect to the bogie of the railway vehicle or a member attached to the bogie. In the present embodiment, as shown in FIG. 4, the support portion 56 b supports the handle 56 a and the other end of the cable portion 55 with respect to the support plate 101 that is a member attached to the bogie of the railway vehicle. The form is illustrated.

  The support part 56b includes a cylindrical part 61a, a fixing nut 61b, and the like. The cylinder part 61a is provided as a cylindrical member. The cylindrical portion 61a is provided with a flange-shaped portion that spreads outward in a ring shape and abuts against the support plate 101 on the outer periphery of the middle portion in the longitudinal direction. The cylindrical portion 61 a is attached to the support plate 101 with a cylindrical portion passing through a through hole provided in the support plate 101 and a flange-shaped portion in contact with the support plate 101.

  Moreover, the through-hole extended along the longitudinal direction is provided in the cylinder part 61a. The other end of the wire cable 55a and the handle connection side rod 55d fixed thereto are inserted in the through hole. The inner through hole of the cylindrical portion 61a supports the handle connecting side rod 55d so as to be slidable along the longitudinal direction of the cylindrical portion 61a on the inner periphery thereof.

  Note that an end portion of the handle connection side rod 55d fixed to the handle 56a is disposed so as to protrude from the tube portion 61a. The end of the shaft-like part opposite to the umbrella-like part of the handle 56a can abut against the end of the cylindrical part 61a arranged on the opposite side of the flange-like part with the support plate 101 interposed therebetween. Is arranged. Further, the end portion of the cable guide 55b is fitted and fixed to the inner periphery of the end portion side where the wire cable 55a is inserted in the through hole of the cylindrical portion 61a.

  The fixing nut 61 b is provided as a nut for fixing the cylindrical portion 61 a attached to the support plate 101 to the support plate 101. The fixing nut 61b is provided with a female thread portion on the inner periphery. And the fixing nut 61b is comprised so that the external thread part provided in the outer periphery of the part inserted in the through-hole of the support plate 101 in the cylinder part 61a in the internal thread part may be screwed. When the fixing nut 61b is screwed to the cylindrical portion 61a attached to the supporting plate 101, the supporting plate 101 is tightened between the flange-shaped portion of the cylindrical portion 61a and the fixing nut 61b, and the supporting portion 56b is supported by the supporting plate 56b. 101 is fixed.

  The attachment portion 57 is provided as a mechanism for attaching and supporting the lever portion 54 and the cable portion 55 to the cylinder body 23. The mounting portion 57 includes a lever support member 57a, a rod guide 57b, a bracket 57c, and the like. The lever support member 57a and the bracket 57c are made of, for example, a steel member, and the rod guide 57b is made of, for example, a resin member.

  The lever support member 57a is provided as a member fixed and attached to the cylinder body 23, and the lever portion 54 is rotatably connected to the fulcrum portion 54a. Thereby, the lever support member 57 a connects the lever portion 54 to the cylinder body 23 so as to be swingable.

  The rod guide 57b includes a cylindrical member that is fixed to the cylinder body 23 via the bracket 57c, and is provided as a mechanism that guides the movement of the lever connection side rod 55c. The rod guide 57b is provided with a through hole extending along the longitudinal direction. In this through hole, one end of the wire cable 55a and the lever connecting side rod 55c fixed thereto are inserted. The inner through hole of the rod guide 57b supports the lever connecting side rod 55c so as to be slidable along the longitudinal direction of the rod guide 57b on the inner periphery thereof.

  The rod guide 57b is installed on a bracket 57c fixed to the cylinder body 23 so that its longitudinal direction extends in a direction parallel to the axial direction of the cylinder body 23. The direction in which the through hole of the rod guide 57b extends is also set so as to extend along a direction parallel to the axial direction of the cylinder body 23. Thereby, the moving direction of the lever connection side rod 55 c is guided along a direction parallel to the axial direction of the cylinder body 23. The bracket 57c is provided as a support member having one end fixed to the cylinder body 23 and the rod guide 57b fixed to the other end. That is, the bracket 57 c is provided as a member that supports the rod guide 57 b in a cantilever manner with respect to the cylinder body 23.

  In the parking brake manual release device 3 described above, the longitudinal direction of the latch member 49 and the direction in which the latch member 49 moves are along the radial direction of the cylinder body 23, that is, the direction orthogonal to the axial direction of the cylinder body 23. It is set to extend. Further, the longitudinal direction of the lever connection side rod 55 c and the direction in which the lever connection side rod 55 c moves are set so as to extend along the axial direction of the cylinder body 23. Therefore, in the parking brake manual release device 3, the direction in which the latch member 49 is pulled out toward the outside of the cylinder body 23 and the one end of the cable portion 55 when the operation portion 56 is operated are the lever portions 54. Are set so as to intersect with each other in a direction substantially orthogonal to each other.

  In the parking brake manual release device 3, the direction in which the lever connection side rod 55 c moves is set so as to extend along the axial direction of the cylinder body 23 as described above. That is, in the parking brake manual release device 3, the direction in which one end of the cable portion 55 moves so as to swing the lever portion 54 when the operation portion 56 is operated is the axial direction of the cylinder body 23. It is set to extend along the parallel direction.

[Operation of the device]
Next, the operation of the brake device 1, the brake cylinder device 2, and the parking brake manual release device 3 will be described. FIGS. 1 to 3 show the brake device 1 and the brake cylinder device 2 in a state in which neither the fluid brake mechanism 24 nor the parking spring brake mechanism 25 is operated and are loosened. For example, when the braking operation is not performed during operation of the railway vehicle, the state shown in FIGS. In this state, the brake control device (not shown) supplies the compressed air from the first compressed air supply source (not shown) to the first pressure chamber 29 via the brake control device and the first port 37a. It is controlled not to be done. The compressed air in the first pressure chamber 29 is naturally discharged via the brake control device and the first port 37a. For this reason, the first piston 31 is biased in the brake release direction (in the direction of arrow D in FIG. 3) by the first spring 30 in the cylinder body 23, and the first piston 31 is a wall portion inside the cylinder body 23. The first pressure chamber 29 is in contact with a wall section that defines the first pressure chamber 29.

  On the other hand, in the state shown in FIG. 1 to FIG. 3, based on the control of the parking spring brake control solenoid valve (not shown), the parking spring brake control solenoid valve and the second compressed air supply source (not shown) Compressed air is supplied to the second pressure chamber 33 via the second port 37b. Therefore, the second piston 35 is moved in the brake release direction against the biasing force of the second spring 34 by the biasing force due to the action of the compressed air supplied to the second pressure chamber 33. In this state, the concavo-convex teeth 46a of the clutch wheel 41 and the concavo-convex teeth 46b of the clutch sleeve 42 are not engaged with each other, and a gap is formed.

  On the other hand, the fluid brake mechanism 24 is operated by supplying compressed air from the first compressed air supply source to the first pressure chamber 29 via the first port 37a based on the control of the brake control device. At this time, the first piston 31 moves in the brake operation direction (the direction of arrow C in FIG. 3) against the biasing force of the first spring 30 by the biasing force due to the action of the compressed air supplied to the first pressure chamber 29. . Thereby, the rod drive unit 14 also moves in the brake operating direction together with the first piston 31. Thereby, the movable roller 21 is urged toward the wheel 100 side while being separated from the fixed roller 20 by the wedge-shaped portion 14 a of the rod driving unit 14. Then, together with the movable roller 21, the outer case portion 18, the inner case portion 19 and the rod 12 move toward the wheel 100 side. As a result, the lining 15 of the brake output unit 11 that moves together with the rod 12 contacts the tread surface 100a of the wheel 100, and the rotation of the wheel 100 is braked.

  In the above operation, the spindle 38 moves in the brake operation direction together with the first piston 31, but the clutch wheel 41 is screwed into the screw portion 40 provided in the spindle 38. However, when the spindle 38 moves in the brake operating direction together with the first piston 31, the clutch wheel 41 is rotatably supported by the bearing 44 with respect to the clutch box 43. For this reason, the clutch wheel 41 rotates around the spindle 38 as the spindle 38 moves in the brake operating direction. As a result, only the spindle 38 moves in the brake operating direction.

  Next, the operation of the parking spring brake mechanism 25 will be described. The parking spring brake mechanism 25 is used in a state where the fluid brake mechanism 24 is operated and the railway vehicle is completely stopped. The parking spring brake mechanism 25 is operated with the fluid brake mechanism 24 still operating. That is, the operation of the parking spring brake mechanism 25 is started in a state where the compressed air is supplied to the first pressure chamber 29 and the first piston 31 is biased in the brake operation direction.

  The parking spring brake mechanism 25 operates by discharging compressed air from the second pressure chamber 33 through the second port 37b and the parking spring brake control electromagnetic valve based on the control of the parking spring brake control electromagnetic valve described above. To do. When the compressed air supplied into the second pressure chamber 33 is discharged through the second port 37b and the parking spring brake control electromagnetic valve, the second piston 35 is moved in the brake operating direction by the urging force of the second spring 34. Moving. When the second piston 35 moves in the brake operating direction, the clutch sleeve 42 moves in the brake operating direction together with the second piston 35. Then, the clutch sleeve 42 comes into contact with the clutch wheel 41, and the concave and convex teeth 46a of the clutch wheel 41 and the concave and convex teeth 46b of the clutch sleeve 42 mesh with each other.

  In the above state, the engagement blade 49b of the latch member 49 and the latch blade 43d of the clutch box 43 are engaged, and the relative rotation of the clutch box 43 with respect to the cylinder body 23 is restricted. Further, the relative rotation of the clutch sleeve 42 is also restricted with respect to the clutch box 43. For this reason, when the concavo-convex teeth 46 a and the concavo-convex teeth 46 b mesh, the rotation of the clutch wheel 41 is restricted with respect to the cylinder body 23 via the clutch box 43 and the clutch sleeve 42. Thereby, the rotation of the clutch wheel 41 is stopped, and the spindle 38 and the second piston 35 are connected to each other. In this connected state, the parking spring brake mechanism 25 is locked by the lock mechanism 28 while being operated. In this locked state, the state where the rotation of the wheel 100 is braked is maintained. When the parking spring brake mechanism 25 is once operated, the compressed air is not supplied to the first pressure chamber 29 and the compressed air is gradually discharged from the first pressure chamber 29.

  On the other hand, when it is desired to move the parking position of the railway vehicle a little by the towing vehicle without supplying compressed air to the second pressure chamber 33 and releasing the operation of the parking spring brake mechanism 25, the parking spring brake mechanism 25 is used. When it is desired to release the operation of the parking brake manually, the parking brake manual release device 3 is operated. When the parking brake manual release device 3 is not operated, the latch member 49 is urged by the latch urging spring 50, and the engagement blade 49b of the latch member 49 and the latch blade 43d of the clutch box 43 are engaged. The maintained state is maintained (see FIGS. 3 and 5). That is, the lock state of the parking spring brake mechanism 25 is maintained by the lock mechanism 28.

  From the above state, the operation unit 56 is manually operated by an operator (not shown). That is, a manual operation is performed in which the handle 56 a of the operation unit 56 is pulled in a direction away from the support plate 101. FIG. 6 is a diagram for explaining the operation of the brake device 1, the brake cylinder device 2, and the parking brake manual release device 3, and shows a state where the manual operation of the parking brake manual release device 3 has been once performed. FIG. FIG. 7 is a diagram showing a part of the parking brake manual release device 3 in the brake device 1 shown in FIG. 6 and the vicinity thereof.

  When the operation of pulling the handle 56a of the operation unit 56 is performed, the handle connecting side rod 55d and the wire cable 55a are also pulled together with the handle 56a. As a result, the wire cable 55a moves along the cable guide 55b, and the lever connecting side rod 55c fixed to one end of the wire cable 55a moves along the direction parallel to the axial direction of the cylinder body 23. The movement direction is guided by 57b. At this time, the lever connection side rod 55c moves in the direction of being inserted deeply into the through hole of the rod guide 57b. In the present embodiment, the axial direction of the cylinder body 23 is set so as to be directed in the vertical direction, and the lever connecting side rod 55c pulled together with the wire cable 55a moves so as to be pulled upward.

  When the lever connecting side rod 55c moves as described above, the lever portion 54 connected to the lever connecting side rod 55c via the lever connecting portion 55e swings around the fulcrum portion 54a. Accordingly, the latch member 49 connected to the lever portion 54 via the ring-shaped member 58 is driven so as to be pulled out toward the outside of the cylinder body 23. That is, the latch member 49 is moved to the outside of the cylinder body 23 against the biasing force of the latch biasing spring 50 by the manipulation force applied to the manipulation portion 56 and transmitted via the cable portion 55 and the lever portion 54. Move so that it is pulled out toward you. As a result, as shown in FIGS. 6 and 7, the engagement between the engagement blade 49 b of the latch member 49 and the latch blade 43 d of the clutch box 43 is released.

  When the engagement between the engagement blade 49 b of the latch member 49 and the latch blade 43 d of the clutch box 43 is released, the clutch box 43 can be rotated relative to the cylinder body 23. That is, the clutch box 43, the clutch sleeve 42 engaged with the clutch box 43 at the protruding portion 43b, and the clutch wheel 41 engaged with the clutch sleeve 42 via the concave and convex portions (46a, 46b), In an integrated state, the cylinder body 23 can rotate relative to the cylinder body 23.

  When the clutch box 43, the clutch sleeve 42, and the clutch wheel 41 are rotatable relative to the cylinder body 23, the connection between the spindle 38 and the second piston 35 is released. That is, the spindle 38 is allowed to rotate relative to the second piston 35. In the above state, compressed air is not supplied to the first pressure chamber 29. For this reason, the spindle 38 moves in the brake release direction together with the first piston 31 by the biasing force of the first spring 30 that biases the first piston 31. As the spindle 38 moves in the brake releasing direction, the clutch box 43, the clutch sleeve 42, and the clutch wheel 41 rotate with respect to the cylinder body 23, and the spindle 38 is allowed to move in the brake releasing direction. become.

  As described above, when the operation unit 56 is manually operated, the relative displacement of the spindle 38 with respect to the second piston 35 is allowed, and the lock state of the parking spring brake mechanism 25 by the lock mechanism 28 is released. Thereby, the operation of the parking spring brake mechanism 25 is manually released.

[Effect of this embodiment]
According to the present embodiment, when the operator releases the operation of the parking spring brake mechanism 25 by manual operation, the operator operates to pull the operation unit 56 attached to the other end of the cable unit 55. As a result, the force point portion 54b of the lever portion 54 connected to one end portion of the cable portion 55 is driven, and the lever portion 54 swings. Then, as the lever portion 54 swings, one end side of the latch member 49 is pulled out toward the outside of the cylinder body 23, and the engagement with the transmission mechanism 27 on the other end side of the latch member 49 is released. Thereby, the locked state of the parking spring brake mechanism 25 is released by manual operation, and the operation of the parking spring brake mechanism 25 is released.

  Further, according to the present embodiment, the direction in which the latch member 49 is pulled out toward the outside of the cylinder body 23, and one end of the cable portion 55 pulls the lever portion 54 when the operation portion 56 is operated by the operator. The direction of movement so as to be swung is set to intersect. Therefore, the end portion of the cable portion 55 connected to the latch member 49 via the lever portion 54 is further orthogonal to the direction orthogonal to the axial direction of the cylinder body 23 (in this embodiment, the end of the cylinder body 23). (Direction parallel to the axial direction). The operating force of the pulling operation by the operator is transmitted to the latch member 49 by the cable portion 55 and the lever portion 54, and only the latch member 49 moves in the direction orthogonal to the axial direction of the cylinder body 23.

  Therefore, an operation in which the operator pulls out the cable portion 55 in the direction orthogonal to the axial direction of the cylinder body 23 in the vicinity of the end portion of the latch member 49 becomes unnecessary. Thus, even when the space is limited in the direction orthogonal to the axial direction of the cylinder body 23, the operator operates the operation unit 56 to latch via the cable unit 55 and the lever unit 54. The member 49 can be pulled out easily. That is, even when the space is limited in the direction orthogonal to the axial direction of the cylinder body 23, the operator can easily perform a manual operation for releasing the operation of the parking spring brake mechanism 25. Further, the cable portion 55 for pulling out the latch member 49 can be easily installed.

  Therefore, according to the present embodiment, the manual operation for releasing the operation of the parking spring brake mechanism 25 can be easily performed even when the space is limited in the direction orthogonal to the axial direction of the cylinder body 23. The parking brake manual release device 3, the brake cylinder device 2, and the brake device 1 can be provided.

  Further, according to the present embodiment, the action point portion 54 c of the lever portion 54 is provided with the concave portion 54 d that engages with the ring-shaped member 58 connected to one end side of the latch member 49. Therefore, the concave portion 54d is also engaged with the ring-shaped member 58 in the brake cylinder device 2 having the lock mechanism 28 in which the latch member 49 is pulled out by pulling out the ring-shaped member 58 on one end side of the latch member 49. The parking brake manual release device 3 can be easily attached by combining them.

  In addition, according to the present embodiment, during manual operation for releasing the operation of the parking spring brake mechanism 25, one end portion of the cable portion 55 extends along a direction parallel to the axial direction of the cylinder body 23. The part 54 is swung. For this reason, even if the space limit in the direction orthogonal to the axial direction of the cylinder body 23 is large, the cable portion 55 can be easily installed by efficiently utilizing the space in the vicinity of the cylinder body 23. Can do.

  Further, according to the present embodiment, the lever portion 54 is set so that the distance from the fulcrum portion 54a to the force point portion 54b is the same as the distance from the fulcrum portion 54a to the action point portion 54c. For this reason, the operation amount of the cable portion 55 and the displacement amount of the latch member 49 can be set to substantially the same amount. As a result, the operator can easily grasp the amount of pulling out of the latch member 49, and the operability can be further improved.

[Modification]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, the following modifications can be implemented.

(1) In the above-described embodiment, the mode in which the brake device is configured as a tread brake has been described as an example, but this need not be the case. The present invention may be applied to brake devices other than the tread brake device. For example, the present invention may be applied to a brake device configured as a disc brake device.

  A brake device as a disc brake device includes, for example, the brake cylinder device of the present invention, a rod, a brake output unit, a caliper body, and the like. The rod is driven in accordance with the operation of the brake cylinder device. The brake output unit is driven in conjunction with the rod and outputs a braking force. The caliper body includes a pair of brake levers. One end of the cylinder body of the brake cylinder device is connected to one of the pair of brake levers. A brake output unit is connected to the other of the pair of brake levers. And a control device is provided in the side opposite to the side connected to the brake cylinder device and brake output part in a pair of brake levers. When the brake cylinder device is operated, the pair of brake levers are driven, and the disc on the axle side of the vehicle is sandwiched by the above-described restrictor, and a braking force is generated. The present invention can also be applied to such a disc brake device.

(2) In the above-described embodiment, the compressed air has been described as an example of the pressure fluid used in the fluid brake mechanism and the parking spring brake mechanism. However, this need not be the case. Pressure fluid other than compressed air may be used in the fluid brake mechanism and the parking spring brake mechanism. For example, pressure oil may be used as pressure fluid in a fluid brake mechanism and a parking spring brake mechanism.

(3) In the above-described embodiment, the mechanism for transmitting the urging force in the brake operation direction of the second piston to the shaft portion that is displaced together with the first piston has been described as an example of the transmission mechanism, but this need not be the case. . A form of a transmission mechanism that directly transmits the urging force of the second piston in the brake operation direction to the first piston may be implemented. Further, the transmission mechanism may be a mechanism that transmits the urging force of the second piston in the brake operation direction to the first piston or the shaft portion that is displaced together with the first piston. Various modifications may be made.

(4) Further, the lock mechanism is configured such that the other end side of the latch member is engaged with the transmission mechanism, thereby restricting the relative displacement of the first piston or the shaft portion with respect to the second piston when the parking spring brake mechanism is operated. Any mechanism may be used as long as the brake mechanism is kept in a locked state, and the structure of the lock mechanism may be variously changed without being limited to the above-described embodiment.

(5) About the shape of a lever part, you may implement not only the form illustrated by the above-mentioned embodiment but various changes. In the above-described embodiment, the fulcrum portion of the lever portion has been described as an example in which the lever portion is rotatably connected to a member attached to the cylinder body. However, this need not be the case. A form of a lever part in which the fulcrum part is rotatably connected to the cylinder body may be implemented.

  In the above-described embodiment, the distance from the fulcrum part to the force point part and the distance from the fulcrum part to the action point part have been described as an example, but this is the case. It does not have to be. The relationship between the distance from the fulcrum part to the force point part and the distance from the fulcrum part to the action point part may be variously changed. For example, in the lever portion, the operation force required to be applied to the operation portion is reduced by setting the distance from the fulcrum portion to the force point portion to be larger than the distance from the fulcrum portion to the action point portion. be able to.

(6) In the above-described embodiment, the form of the cable portion configured to include the wire cable, the cable guide, the lever connecting side rod, the handle connecting side rod, and the lever connecting portion is exemplified, but this need not be the case. . That is, one end of the cable portion is connected to the force point portion of the lever portion, and an operation portion that is operated by manual operation is attached to the other end portion to transmit the operating force applied to the operation portion. Any form may be used as long as the part is swung, and the present invention is not limited to the form exemplified in the above-described embodiment, and various modifications may be made.

(7) In the above-described embodiment, the direction in which one end of the cable portion moves so as to swing the lever portion when the operation portion is operated is set as a direction parallel to the axial direction of the cylinder body. However, this need not be the case. The direction in which the latch member is pulled out toward the outside of the cylinder body and the direction in which one end of the cable part moves to swing the lever when the operating part is operated are set to intersect. However, the present invention is not limited to the embodiment illustrated in the above-described embodiment, and various modifications may be made.

(8) FIG. 8 is a diagram for explaining a modification, and is a diagram showing a part of a parking brake manual release device in the brake device according to the modification and the vicinity thereof. In the description of the modification shown in FIG. 8, elements that are configured in the same manner as in the above-described embodiment are denoted by the same reference numerals as those in the above-described embodiment, or are the same as those in the above-described embodiment. The description is omitted by citing the reference numerals.

  In the modified example shown in FIG. 8, the adjustment mark part 62 is further provided in the parking brake manual release device 3 of the above-described embodiment. The adjustment mark portion 62 is used as a mark for defining the length of the cable portion 55 for adjusting the length of the cable portion 55 from the operation portion 56 to a position where it is connected to the lever portion 54. And the adjustment mark part 62 is used as said mark when the parking brake manual release apparatus 3 is equipped with the brake cylinder apparatus 2 installed in the railway vehicle. Alternatively, the adjustment mark portion 62 is used as the mark when the brake cylinder device 2 to which the parking brake manual release device 3 is attached is mounted on the vehicle.

  The adjustment mark portion 62 is provided as a mark that defines the position of the lever portion 54 relative to the cylinder body 23 in the swinging direction. In addition, the adjustment mark portion 62 discharges compressed air from the second pressure chamber 33, and the engagement between the engagement blade 49b of the latch member 49 and the latch blade 43d of the clutch box 43 of the transmission mechanism 27 is released. Thus, it is provided as a mark for defining the position of the lever portion 54 in the adjustment state in which the locked state of the parking spring brake mechanism 25 is released.

  In the modification shown in FIG. 8, the adjustment mark portion 62 is provided on the lever portion 54. The adjustment mark portion 62 is provided as a protruding portion formed in a protruding shape or a step shape that can come into contact with a predetermined position of a dropout preventing member 52 that is a member attached to the cylinder body 23. Further, the drop-off prevention member 52 is provided with a contact portion 52 a that contacts the adjustment mark portion 62 as a convex portion to position the adjustment mark portion 62 so as to extend toward the outside of the cylinder body 23. ing.

  The protruding length of the abutting portion 52a from the cylinder body 23, that is, the abutting position between the abutting portion 52a and the adjustment mark portion 62 is the latch member 49 in a state where compressed air is supplied to the second pressure chamber 33. The engagement blade 49b and the latch blade 43d of the clutch box 43 are set to be engageable. That is, the contact position is a state in which the contact portion 52a and the adjustment mark portion 62 are in contact with each other and the compressed air is supplied to the second pressure chamber 33, and is applied by the latch urging spring 50. As a result, the latch member 49 is moved to the inside of the cylinder body 23 so that the engagement blade 49b and the latch blade 43d can be engaged with each other. When the compressed air is supplied to the second pressure chamber 33 and the latch member 49 is urged and moved by the latch urging spring 50, the ring-shaped member 58 connected to the recess 54d in a loosely fitted state together with the latch member 49. Moves relative to the lever portion 54. The inside of the ring-shaped portion of the ring-shaped member 58 engages with the recess 54d. Thus, when the ring-shaped member 58 is engaged with the recess 54d, the contact position is set so that the engagement blade 49b and the latch blade 43d can be engaged.

  As described above, when the parking brake manual release device 3 is mounted or the brake cylinder device 2 is mounted, the length of the cable portion 55 from the operation portion 56 to the position where the cable portion 55 is connected to the lever portion 54 is adjusted. The length of the cable portion 55 is adjusted in a state where the parking brake manual release device 3 is attached to the cylinder body 23 and the support plate 101.

  In the above state, the operator first holds the adjustment mark portion 62 of the lever portion 54 in contact with the contact portion 52 a of the drop-off prevention member 52. In this state, the screwing position of the female screw portion of the insertion opening of the case 59a and the male screw portion of the end portion of the lever connection side rod 55c is adjusted, and the nut 59b is tightened toward the case 59a. Thereby, the length of the cable part 55 from the operation part 56 to the position connected with the lever part 54 is adjusted as mentioned above. At this time, the end of the shaft-like portion of the handle 56a of the operation portion 56 is disposed in contact with the end of the cylindrical portion 61a.

  According to the modification shown in FIG. 8, when the parking brake manual release device 3 is installed on the brake cylinder device 2 installed in the railway vehicle, or the brake cylinder device 2 to which the parking brake manual release device 3 is attached is installed on the railroad. When equipping the vehicle, the worker of the outfitting work can adjust the length of the cable part 55 using the adjustment mark part 62 as a mark. The adjustment mark portion 62 is a cylinder body in the swinging direction of the lever portion 54 in the state of adjustment when the compressed air is discharged from the second pressure chamber 33 and the lock state of the parking spring brake mechanism 25 is released. 23 is provided as a mark for defining the position with respect to 23. For this reason, the operator does not need to supply the compressed air to the second pressure chamber 33 to adjust the length of the cable portion 55 and put the parking spring brake mechanism 25 in an inoperative state when fitting. Therefore, it is possible to easily adjust the length of the cable portion 55 during the outfitting. Then, the occurrence of poor adjustment of the length adjustment of the cable portion 55 is also suppressed.

  Further, according to this modification, at the time of outfitting, the operator places the adjustment mark portion 62 provided as a protruding portion formed in a protruding shape or a step shape at a predetermined position of the drop-off preventing member 52 attached to the cylinder body 23. By abutting, the length of the cable portion 55 can be easily adjusted.

  In addition, FIG. 9 is a figure which shows the example of an incorrect adjustment of the parking brake manual release apparatus 3 in which the adjustment mark part 62 is not provided. In the example shown in FIG. 9, since the adjustment mark portion 62 is not provided, it is difficult for an operator of the outfit operation to secure a mark for adjusting the length of the cable portion 55, and the length adjustment work of the cable portion 55 is performed. Becomes difficult. As a result, as shown in FIG. 9, there is a possibility that an adjustment failure in the length adjustment of the cable portion 55 occurs. In other words, even when the latch member 49 is biased by the latch biasing spring 50 in a state where compressed air is supplied to the second pressure chamber 33, the latch member 49 cannot move sufficiently inside the cylinder body 23, and There is a possibility that the joint blade 49b and the latch blade 43d may not be engaged. However, according to the modification shown in FIG. 8, as described above, the occurrence of poor adjustment of the length adjustment of the cable portion 55 is suppressed. As a result, in a state where compressed air is supplied to the second pressure chamber 33, the latch member 49 is urged by the latch urging spring 50 to move the latch member 49 to the inside of the cylinder body 23, and the engagement blade 49b, the latch blade 43d, Can be ensured.

(9) FIG. 10 is a diagram for explaining another modified example related to the adjustment mark part, and is a diagram showing a part of the parking brake manual release device in the brake device according to the modified example and the vicinity thereof. In the description of the modification shown in FIG. 10, elements that are configured in the same manner as in the above-described embodiment are denoted by the same reference numerals as those in the above-described embodiment, or are the same as those in the above-described embodiment. The description is omitted by citing the reference numerals.

  In the modification shown in FIG. 10, the adjustment mark part 63 is further provided in the parking brake manual release device 3 of the above-described embodiment. The adjustment mark portion 63 is used as a mark for defining the length of the cable portion 55 for adjusting the length of the cable portion 55 from the operation portion 56 to the position where it is connected to the lever portion 54. And the adjustment mark part 63 is used as said mark, when the parking brake manual release apparatus 3 is equipped with the brake cylinder apparatus 2 installed in the railway vehicle. Alternatively, the adjustment mark portion 63 is used as the mark when the brake cylinder device 2 to which the parking brake manual release device 3 is attached is mounted on the vehicle.

  The adjustment mark portion 63 is provided as a mark that defines the position of the lever portion 54 relative to the cylinder body 23 in the swinging direction. In addition, the adjustment mark portion 63 discharges compressed air from the second pressure chamber 33, and the engagement between the engagement blade 49 b of the latch member 49 and the latch blade 43 d of the clutch box 43 of the transmission mechanism 27 is released. Thus, the parking spring brake mechanism 25 is provided as a mark for defining the position of the lever portion 54 in the adjusted state in which the locked state is released.

  Moreover, in the modification shown in FIG. 10, the adjustment mark part 63 is provided with the long hole 63a and the pin part 63b. The elongated hole 63a is provided in one of the force point portion 54b of the lever portion 54 and the lever connecting portion 55e. The pin portion 63b is provided on the other of the force point portion 54b and the lever connecting portion 55e. In the modification shown in FIG. 10, the elongated hole 63a is provided in the force point portion 54b, and the pin portion 63b is provided in the lever connecting portion 55e. The pin part 63b is provided in a pin shape that can be displaced along the longitudinal direction of the long hole 63a inside the long hole 63a. The pin portion 63b is fixed to the case 59a of the lever connecting portion 55e.

  In addition, the form by which the long hole 63a was provided in the lever connection part 55e, and the pin part 63b was provided in the power point part 54b may be implemented. Further, the lever connecting portion 55e constitutes a connecting portion that is provided at one end portion of the cable portion 55 and connects the end portion to the force application portion 54b.

  And the adjustment mark part 63 is comprised so that one edge part in the longitudinal direction of the long hole 63a and the pin part 63b may contact | abut in the case of length adjustment of the cable part 55. FIG. That is, in the adjustment mark portion 63, compressed air is supplied to the second pressure chamber 33, and the engagement blade 49 b on the other end side of the latch member 49 is engaged with the latch blade 43 d of the clutch box 43 of the transmission mechanism 27. One edge portion in the longitudinal direction of the long hole 63a in the state of the adjustment described above so that the lever portion 54 allowing the movement of the latch member 49 with respect to the cylinder body 23 can be swung when moving in the longitudinal direction. And the pin portion 63b are in contact with each other. Thereby, the adjustment mark part 63 is comprised so that the position with respect to the cylinder main body 23 of the lever part 54 may be prescribed | regulated.

  In the modification shown in FIG. 10, the longitudinal direction of the long hole 63 a is set so as to extend along a direction parallel to the axial direction of the cylinder body 23. When adjusting the length of the cable portion 55, the pin portion 63b is configured to be able to contact one edge portion that is an edge portion on the side close to the ring-shaped member 58 in the longitudinal direction of the elongated hole 63a.

  As described above, when the parking brake manual release device 3 is mounted or the brake cylinder device 2 is mounted, the length of the cable portion 55 from the operation portion 56 to the position where the cable portion 55 is connected to the lever portion 54 is adjusted. The length of the cable portion 55 is adjusted in a state where the parking brake manual release device 3 is attached to the cylinder body 23 and the support plate 101.

  In the above state, first, the pin portion 63b provided in the lever connecting portion 55e is provided to one end portion (end portion on the ring-shaped member 58 side) of the elongated hole 63a provided in the lever portion 54 by the operator. It is held in contact. At this time, the latch member 49 is urged toward the clutch box 43 by the latch urging spring 50, and the engagement blade 49 b provided at the other end of the latch member 49 is connected to the outer periphery of the clutch box 43. It arrange | positions in the state contact | abutted to. The engagement blade 49b is in contact with the outer periphery of the clutch box 43 in a state where it is not engaged with the latch blade 43d.

  In the above state, the screwing position of the female screw portion of the insertion opening of the case 59a and the male screw portion of the end portion of the lever connection side rod 55c is adjusted, and the nut 59b is tightened toward the case 59a. Thereby, the length of the cable part 55 from the operation part 56 to the position connected with the lever part 54 is adjusted as mentioned above. At this time, the end of the shaft-like portion of the handle 56a of the operation portion 56 is disposed in contact with the end of the cylindrical portion 61a.

  According to the modification shown in FIG. 10, when the parking brake manual release device 3 is installed on the brake cylinder device 2 installed in the railway vehicle, or the brake cylinder device 2 to which the parking brake manual release device 3 is attached When dressed in a vehicle, the worker of the dressing work can adjust the length of the cable portion 55 using the adjustment mark portion 63 as a mark. The adjustment mark portion 63 is a cylinder main body in the swinging direction of the lever portion 54 in the adjustment state in which the compressed air is discharged from the second pressure chamber 33 and the lock state of the parking spring brake mechanism 25 is released. 23 is provided as a mark for defining the position with respect to 23. For this reason, the operator does not need to supply the compressed air to the second pressure chamber 33 to adjust the length of the cable portion 55 and put the parking spring brake mechanism 25 in an inoperative state when fitting. Therefore, it is possible to easily adjust the length of the cable portion 55 during the outfitting. Then, the occurrence of poor adjustment of the length adjustment of the cable portion 55 is also suppressed.

  Further, according to this modification, at the time of fitting, the operator can pin the pin portion provided in the lever connecting portion 55e of the cable portion 55 with respect to the edge portion of the elongated hole 63a provided in the force point portion 54b of the lever portion 54. The length of the cable part 55 can be easily adjusted by bringing 63b into contact. Since the edge of the elongated hole 63a and the pin 63b are brought into contact with each other during adjustment, the movement of the latch member 49 relative to the cylinder main body 23 in the direction of engagement with the transmission mechanism 27 is reliably permitted. Occurrence of an adjustment failure in the length adjustment of 55 is also reliably suppressed.

  In addition, FIG. 11 is a figure for demonstrating the action | operation of the parking brake manual release apparatus 3 which concerns on the modification shown in FIG. According to the modification shown in FIG. 10, as described above, the occurrence of poor adjustment of the length adjustment of the cable portion 55 is suppressed. As a result, as shown in FIG. 11, in a state where compressed air is supplied to the second pressure chamber 33, the latch member 49 is urged by the latch urging spring 50, and the latch member 49 moves to the inside of the cylinder body 23 to be engaged. Engagement between the blade 49b and the latch blade 43d can be ensured.

(10) FIG. 12 is a view showing a brake device 1b, a brake cylinder device 2b, and a parking brake manual release device 3b according to a modification. FIG. 13 is an enlarged view of a part of FIG. 12, and FIG. 14 is a view of a part of the brake device 1b shown in FIG. It is a figure shown.

  As shown in FIG. 12 and the like, the brake device 1b according to the modified example is different in the position where the parking brake manual release device 3b is provided as compared with the case of the above embodiment. Specifically, in this modification, the parking brake manual release device 3b is provided at a position closer to the wheel 100 than the brake cylinder device 2b. Along with this, the position of the lock mechanism 28 is also arranged in the wheel 100 side portion of the brake cylinder device 2b.

  And in the brake device 1b which concerns on this modification, as shown in FIG.13 and FIG.14 etc., the structure of the lever part 64 differs greatly compared with the case of the said embodiment. In the following, elements that are configured in the same manner as in the above-described embodiment are denoted by the same reference numerals as those of the modification examples described in the above-described embodiments in the drawings, or by quoting the same reference numerals as in the above-described embodiments. The description is omitted.

  As shown in FIGS. 13 and 14, the lever portion 64 includes a lever main body portion 65 and a pair of support portions 70. In the lever portion 64, the lever main body portion 65 is rotatably supported by the pair of support portions 70 with respect to the cylinder main body 23. The pair of support portions 70 are fixed to the cylinder body 23.

  The lever main body 65 includes a force point side plate portion 66 (force point side portion), an action point side plate portion 67 (action point side portion), and a shaft portion 68 that connects them.

  The shaft portion 68 is provided as a portion formed in an elongated cylindrical shape, and both end portions thereof are rotatably supported by a pair of support portions 70. A flat head pin 71 is inserted through the shaft portion 68. A C ring 72 is attached to the tip of the flat head pin 71. This prevents the shaft portion 68 from falling off the support portion 70. The flat head pin 71 is provided as an insertion pin (fulcrum shaft) that operates as a fulcrum portion 64 a of the lever portion 64.

  As shown in FIG. 13, the force point side plate portion 66 is provided as a plate-like portion that is formed in a slightly long substantially oval shape in plan view, and one portion in the longitudinal direction is a portion on one side in the shaft portion 68. Are integrally formed. A portion on the other side in the longitudinal direction of the force point side plate portion 66 is provided as a force point portion 64 b of the lever portion 64. A force point operation portion 73 is integrally attached to the force point portion 64b. The force point operation portion 73 is integrally formed with two plate portions 73a and a connecting portion 73b that connects the two plate portions 73a. A wire cable 55 a is connected to the power point operation unit 73. Further, the flat head pin 74 is inserted through the force point side plate portion 66 and the two plate portions 73a in a state where the force point side plate portion 66 is sandwiched between the two plate portions 73a. A C-ring 75 is attached to the tip of the flat head pin 74. Thereby, the flat head pin 74 is prevented from coming off, and the power point side plate portion 66 and the power point operation portion 73 are relatively rotated around the central axis of the flat head pin 74.

  The action point side plate portion 67 is provided as a plate-like portion having an action point portion 64 c connected to one end side of the latch member 49 via a ring-shaped member 58. The action point side plate portion 67 is integrally formed on the side opposite to the portion where the force point side plate portion 66 is provided in the longitudinal direction of the shaft portion 68.

  The lever portion 64 of this modification operates in substantially the same manner as the lever portion 54 according to the above embodiment. Specifically, when the operation of pulling the handle 56a (see FIG. 12) of the operation unit 56 is performed, the wire cable 55a and the force point operation unit 73 are also pulled together with the handle 56a, and the force point side plate unit 66 is also pulled similarly. It is done. Accordingly, since the shaft portion 68 rotates in the clockwise direction in FIG. 13, the action point side plate portion 67 similarly rotates in the clockwise direction and swings. As a result, as in the case of the above embodiment, the latch member 49 connected via the ring-shaped member 58 is pulled out toward the outside of the cylinder body 23.

  By the way, in the case of the said embodiment and this modification, the brake cylinder apparatus is arrange | positioned so that the axial direction of a cylinder main body may follow a perpendicular direction in the state with which this brake cylinder apparatus was attached to the rail vehicle. In the brake cylinder device arranged in this way, for example, there is a case where it is desired to install the lever on the wheel 100 side of the railway vehicle in the cylinder body for the convenience of installation space. However, since other members such as a hanger member support portion 17a for supporting the hanger member 17 are arranged in the space on the wheel 100 side of the railway vehicle in the cylinder body, the space is relatively limited. Therefore, for example, when the lever portion 54 of the above embodiment is installed in this space, the force point portion 54b of the lever portion 54 and the hanger member support portion 17a interfere with each other.

  On the other hand, in the lever portion 64 according to this modification, as shown in FIG. 14, the shaft portion 68 is formed so as to extend along the width direction of the hanger member support portion 17a, and the force point portion 64b is formed as the action point portion. It is integrally formed at the end opposite to 64c. Thereby, it is avoided that the power point part 64b interferes with the hanger member support part 17a. Therefore, according to the present modification, the degree of freedom of arrangement of the lever portion for pulling the latch member 49 can be improved.

  As described above, in the brake cylinder device 2b according to this modification, in the lever portion 64, the action point side plate portion 67 and the force point side plate portion 66 are arranged apart from each other in the axial direction of the fulcrum shaft (flat head pin 71). The Thereby, it is avoided that the power point part 64b of the lever part 64 interferes with the hanger member support part 17a. Therefore, according to this structure, the arrangement | positioning freedom degree of the lever part 64 with respect to a rail vehicle can be improved.

  Further, in the brake cylinder device 2b, the lever portion 64 is a relatively narrow space on the vehicle side in the cylinder body in a state where the cylinder body is installed in the vehicle so that the axial direction of the cylinder body is along the vertical direction. It can be installed in the space while avoiding interference with other members.

  In the brake cylinder device 2b, the lever portion 64 having a shape in which the force point portion 64b and the action point portion 64c are separated in the axial direction of the fulcrum shaft can be configured.

(11) FIG. 15 is a view showing a brake device 1a, a brake cylinder device 2a, and a parking brake manual release device 3a according to a modification. 16 is a view of the brake device 1a, the brake cylinder device 2a, and the parking brake manual release device 3a shown in FIG. 15 as viewed from the direction of arrow E in FIG. In the description of the modification shown in FIGS. 15 and 16, elements similar to those in the above-described embodiment or the modification shown in FIG. 8 are the same as those in the above-described embodiment or the modification shown in FIG. 8. The description will be omitted by attaching the same reference numerals as those of the above embodiment or by quoting the same reference numerals as those of the above-described embodiment or the modification shown in FIG.

  The brake device 1a according to the modification is configured in the same manner as the brake device 1 of the above-described embodiment, and includes similar components. Moreover, the brake cylinder device 2a according to the modification is configured in the same manner as the brake cylinder device 2 of the above-described embodiment, and includes the same components. Moreover, the parking brake manual release device 3a according to the modification is configured in the same manner as the parking brake manual release device 3 of the above-described embodiment, and includes the same components. However, the brake device 1a, the brake cylinder device 2a, and the parking brake manual release device 3a relate to the arrangement of the brake cylinder device and the parking brake manual release device in the brake device, and the brake device 1, the brake cylinder device 2, and the parking brake manual release device. Different from the device 3. Only this difference will be described below.

  FIG. 16 shows a state in which the brake device 1a installed in a railway vehicle (not shown) is viewed from the axle direction of the wheels of the railway vehicle. The brake output unit 11 of the brake device 1a shown in FIGS. 15 and 16 is arranged with the same posture as the brake output unit 11 of the brake device 1 of the above-described embodiment with respect to the wheels of the railway vehicle. However, the posture of the brake cylinder device 2a in the brake device 1a is different from the posture of the brake cylinder device 2 in the brake device 1.

  In the brake cylinder device 2 of the above-described embodiment, the axial direction of the cylinder body 23 and the axial direction of the spindle 38 are set so as to face the up-down direction, that is, the vertical direction. As a result, the brake cylinder device 2 is installed in a so-called vertical position with respect to the railway vehicle. However, in the brake cylinder device 2a according to the modification shown in FIGS. 15 and 16, the axial direction of the cylinder body 23 and the axial direction of the spindle 38 are horizontal and parallel to the axle direction of the wheels of the railway vehicle. Is set to face. As a result, the brake cylinder device 2a is installed in a so-called landscape orientation with respect to the railway vehicle.

  The parking brake manual release device 3a shown in FIGS. 15 and 16 is similar to the parking brake manual release device 3 of the above-described embodiment, in the direction in which the latch member 49 is pulled out toward the outside of the cylinder body 23, and the operation unit 56. The direction in which one end portion of the cable portion 55 moves so as to swing the lever portion 54 when is operated is set to intersect. However, in the parking brake manual release device 3a, the parking brake manual release device 3a is set in a direction in which one end of the cable portion 55 moves so as to swing the lever portion 54 when the operation portion 56 is operated. Is different. Specifically, in the parking brake manual release device 3a, the direction in which one end portion of the cable portion 55 moves so as to swing the lever portion 54 when the operation portion 56 is operated is It is set to extend along a direction parallel to the tangential direction of the outer periphery.

  The brake device 1a, the brake cylinder device 2a, and the parking brake manual release device 3a according to the modified example described above are the same as the brake device 1, the brake cylinder device 2, and the parking brake manual release device 3 according to the above-described embodiment. There is an effect. That is, according to the above-described modification, a manual operation for releasing the operation of the parking spring brake mechanism 25 can be easily performed even when the space is limited in the direction orthogonal to the axial direction of the cylinder body 23. The parking brake manual release device 3a, the brake cylinder device 2a, and the brake device 1a can be provided.

  Further, according to the above-described modification, at the time of manual operation for releasing the operation of the parking spring brake mechanism 25, one end portion of the cable portion 55 extends along a direction parallel to the tangential direction of the outer periphery of the cylinder body 23. The lever portion 54 is swung. For this reason, even if the space limit in the direction orthogonal to the axial direction of the cylinder body 23 is large, the cable portion 55 can be easily installed by efficiently utilizing the space in the vicinity of the cylinder body 23. Can do.

(12) Although the parking brake manual release device provided with the adjustment mark portion has been described in the modification examples shown in FIGS. 8 and 10, the form of the adjustment mark portion is limited to the form shown in FIGS. 8 and 10. It does not have to be. That is, the adjustment mark portion adjusts the length of the cable portion in order to adjust the length of the cable portion from the operation portion to the position connected to the lever portion when the parking brake manual release device or the brake cylinder device is installed. As long as it is a form used as a defining mark, the present invention is not limited to the above-described modification example, and various modifications may be made. For example, the adjustment mark portion is a stamped or displayed line or pattern for each of the lever portion and the cylinder body or the member attached to the cylinder body to which the fulcrum portion of the lever portion is rotatably connected. May be configured as an index of In this case, the operator who adjusts the length of the cable portion uses the indicator provided on the lever portion and the indicator provided on the cylinder body or the member attached to the cylinder body as a mark, and both these indicators are used. The lever portion can be held in the matched state, and the length of the cable portion can be adjusted.

  The present invention is used in a brake cylinder device capable of operating both a fluid brake mechanism used when a vehicle is operated and a parking spring brake mechanism used when a vehicle is parked, and the parking spring brake mechanism is operated by manual operation. Can be widely applied to a parking brake manual release device, a brake cylinder device including the parking brake manual release device, and a brake device including the brake cylinder device.

2 Brake cylinder device 3 Parking brake manual release device 23 Cylinder body 24 Fluid brake mechanism 25 Parking spring brake mechanism 26 Shaft portion 27 Transmission mechanism 28 Lock mechanism 29 First pressure chamber 30 First spring 31 First piston 33 Second pressure chamber 34 Second spring 35 Second pressure chamber 49 Latch member 54 Lever portion 54a Supporting portion 54b Force point portion 54c Action point portion 55 Cable portion 56 Operation portion

Claims (12)

The first pressure chamber and the first spring have a first piston acting to oppose each other, and the first fluid is supplied to the first pressure chamber to resist the biasing force of the first spring. A fluid brake mechanism in which a piston moves in a predetermined brake operation direction;
The second pressure chamber is used when the vehicle is parked, and the second pressure chamber and the second spring are opposed to each other. The second piston moves from a state where pressure fluid is supplied to the second pressure chamber. A parking spring brake mechanism in which the second piston moves in the brake operating direction by the biasing force of the second spring by shifting;
A transmission mechanism for transmitting an urging force of the second piston in the brake operation direction to the first piston or a shaft portion that is displaced together with the first piston;
The first pressure chamber and the second pressure chamber have a latch member that protrudes outward from a cylinder body that divides the second pressure chamber inside, and the other end side of the latch member engages with the transmission mechanism, so that the parking A lock mechanism that restricts relative displacement of the first piston or the shaft portion with respect to the second piston when the spring brake mechanism is operated, and sets the lock state while operating the parking spring brake mechanism;
With
A brake cylinder device installed in a vehicle and capable of operating both the fluid brake mechanism and the parking spring brake mechanism;
Used for
The parking spring brake mechanism is unlocked by allowing the relative displacement of the first piston or the shaft portion with respect to the second piston to be released by being operated manually, thereby releasing the locked state of the parking spring brake mechanism by the lock mechanism. Parking brake manual release device to release the operation of
A fulcrum part is rotatably connected to the cylinder body or a member attached to the cylinder body, and an action point part is connected to one end side of the latch member and swings to be one end of the latch member. A lever part that pulls the side toward the outside of the cylinder body and releases the engagement with the transmission mechanism on the other end side of the latch member;
One end is connected to the force point portion of the lever, and an operating portion operated by manual operation is attached to the other end, and the operating force applied to the operating portion is transmitted to swing the lever. A cable part to be moved,
With
A direction in which the latch member is pulled out toward the outside of the cylinder body, and a direction in which one end of the cable portion moves so as to swing the lever portion when the operation portion is operated. Parking brake manual release device, characterized in that it is set to intersect. The parking brake manual release device according to claim 1,
A ring-shaped member that engages with the action point portion of the lever portion is swingably connected to one end side of the latch member,
The parking brake manual release device according to claim 1, wherein a concave portion that engages with the ring-shaped member is provided at the action point portion of the lever portion. The parking brake manual release device according to claim 1 or 2,
When the parking brake manual release device is installed on the brake cylinder device installed in the vehicle, or when the brake cylinder device to which the parking brake manual release device is attached is installed on the vehicle, the operation is performed. An adjustment mark part used as a mark for defining the length of the cable part for adjusting the length of the cable part from a part to a position connected to the lever part,
The adjustment mark portion is configured to adjust pressure when the fluid is discharged from the second pressure chamber and the engagement between the latch member and the transmission mechanism is released and the locked state of the parking spring brake mechanism is released. The parking brake manual release device according to claim 1, wherein the parking brake manual release device is provided as a mark for defining a position of the lever portion with respect to the cylinder body in a swinging direction. The parking brake manual release device according to claim 3,
The adjustment mark portion is provided on the lever portion, and is provided as a protrusion formed in a protruding shape or a step shape capable of coming into contact with a predetermined position of the cylinder body or a member attached to the cylinder body. Features a parking brake manual release device. The parking brake manual release device according to claim 3,
The adjustment mark part is
A slot provided in one of the force point portion of the lever portion, a connecting portion provided at one end portion of the cable portion and connecting the end portion to the force point portion,
A pin part provided in the other of the force point part and the connecting part and provided in a pin shape displaceable along the longitudinal direction of the long hole inside the elongated hole;
Have
The adjustment mark portion is configured such that when the pressure fluid is supplied to the second pressure chamber and the end portion on the other end side of the latch member moves so as to engage with the transmission mechanism, the cylinder body of the latch member The pin portion is in contact with one edge portion in the longitudinal direction of the elongated hole in the state at the time of adjustment so that the lever portion that allows movement with respect to the pin portion can be swung. A parking brake manual release device characterized by defining a position with respect to a cylinder body. The parking brake manual release device according to any one of claims 1 to 5,
A direction in which one end of the cable portion moves so as to swing the lever portion when the operation portion is operated is along a direction parallel to the axial direction of the cylinder body, or the cylinder A parking brake manual release device characterized in that the parking brake manual release device is set to extend along a direction parallel to a tangential direction of the outer periphery of the main body. The parking brake manual release device according to any one of claims 1 to 6,
The fulcrum part is provided as a fulcrum shaft extending in a predetermined direction,
The parking brake manual release device according to claim 1, wherein the action point portion is provided on one side in the axial direction of the fulcrum shaft, and the force point portion is provided on the other side in the axial direction of the fulcrum shaft. The parking brake manual release device according to claim 7,
In the state where the cylinder body is installed in the vehicle so that the axial direction of the cylinder body is along the vertical direction, the lever portion is disposed on the vehicle wheel side of the cylinder body. Brake manual release device. The parking brake manual release device according to claim 7 or 8,
The lever part is
An action point side portion provided with the action point portion;
A force point side portion provided with the force point portion;
A shaft portion that is formed integrally with the action point side portion and the force point side portion, and an insertion pin provided as the fulcrum shaft is inserted into the shaft center and rotatably supported with respect to the cylinder body;
A parking brake manual release device characterized by comprising: The parking brake manual release device according to any one of claims 1 to 9,
The lever is set so that a distance from the fulcrum portion to the force point portion and a distance from the fulcrum portion to the action point portion are set to be the same. apparatus. The first pressure chamber and the first spring have a first piston acting to oppose each other, and the first fluid is supplied to the first pressure chamber to resist the biasing force of the first spring. A fluid brake mechanism in which a piston moves in a predetermined brake operation direction;
The second pressure chamber is used when the vehicle is parked, and the second pressure chamber and the second spring are opposed to each other. The second piston moves from a state where pressure fluid is supplied to the second pressure chamber. A parking spring brake mechanism in which the second piston moves in the brake operating direction by the biasing force of the second spring by shifting;
A transmission mechanism for transmitting an urging force of the second piston in the brake operating direction to the first piston;
The first pressure chamber and the second pressure chamber have a latch member that protrudes outward from a cylinder body that divides the second pressure chamber inside, and the other end side of the latch member engages with the transmission mechanism, so that the parking A lock mechanism that restricts relative displacement of the first piston or the shaft portion with respect to the second piston when the spring brake mechanism is operated, and sets the lock state while operating the parking spring brake mechanism;
The parking brake manual release device according to any one of claims 1 to 10,
With
A brake cylinder device, wherein the brake cylinder device is installed in a vehicle and both the fluid brake mechanism and the parking spring brake mechanism are operable. Installed in the vehicle,
A brake cylinder device according to claim 11,
A rod driven in accordance with the operation of the brake cylinder device;
A brake output unit that is driven in conjunction with the rod and outputs a braking force;
A brake device comprising:

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