JP2011001749A - Double twin lock device of lateral sliding door of driver's cab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double twin lock device which enables the other lock device to be also unlocked only by unlocking either of the two lock devices of a lateral sliding door of a driver's cab.SOLUTION: This double twin lock device includes: a driven mechanism with a lock, which has a lock member capable of being engaged with a vehicle body-side lock retainer; a lower driven mechanism which has a driven member; a first link mechanism 13 for interlocking them with each other; first and second lock mechanisms 23 and 33 which comprises a first operation handle and a second operation handle 25, enabling the driven mechanism with the lock to be operated from the indoor and outdoor sides of the driver's cab, respectively, and a third operation handle 35 enabling the lower driven mechanism to be operated from the outdoor side, and which can switch between a locking position to unrotatably lock the lock member and the driven member by means of a locking member and an unlocking one; an operation piece which enables the first lock mechanism 23 to be operated from the inside of the driver's cab; first and second key connecting portions 27 and 37 which enable the first and second lock mechanisms to be operated from the outdoor side by means of a key; and a second link mechanism 14 which interlocks and connects the locking members of the first and second lock mechanisms 23 and 33 together.

Description

  The present invention relates to a two-stage double-locking device for a sliding door on a cab side of a railway vehicle. When a crew member enters the cab from a platform, the unlocking device provided at the middle part of the sliding door is operated to When entering the cab, the present invention relates to a two-stage double locking device that operates the unlocking device provided in the lower part of the sliding door to bring the cab side sliding door into an unlocked state.

  Conventionally, a locking device may be provided in each of the middle and lower portions of the rotary side door of the cab of a railway vehicle. Each of these lock devices has a handle that can be rotated from outside the cab of a lock member engaged with a lock receiver on the vehicle body side. When entering the cab from the platform, the handle of the middle step is turned to rotate the lock member, and the lock device of the middle step is brought into the unlocked state. When entering the driver's cab from the ground on the track side, the lower handle is rotated to rotate the lock member, and the lower lock device is unlocked.

  Here, since the locking members of these locking devices are often linked and linked by a link mechanism, when one locking member is rotated, the other locking member is also rotated. Therefore, the side door can be unlocked simply by rotating one of the handles, and the crew can enter the room from outside the cab. The side door provided with these lock devices is described in Patent Document 1, for example. Of these locking devices, the lower locking device is provided with a locking mechanism that locks the locking member in a non-rotatable manner.

  Like the lower locking device, a locking device generally provided on a side door is provided with a locking mechanism. For example, Patent Document 2 describes a so-called one-door two-lock configuration in which two sets of locking devices are mounted on a single residential door. When the doors are unlocked, the doors are not unlocked unless each cylinder lock of the two sets of locking devices is unlocked with one combined key. When the door is brought into the locked state, when one of the cylinder locks is locked, the other cylinder lock is also locked, and the door is brought into the locked state.

Japanese Utility Model Publication No. 3-114474 JP 2001-254551 A

  By the way, in the side door of Patent Document 1, when entering the cab from the ground on the track side, since the crew member is provided with a lock mechanism of the lock device in a range where the hand can be reached without changing the posture, the key is used. There is no problem in unlocking the lock device, but when entering the operator's cab from the platform, the crew member must unlock the lock device with a key in an unreasonable posture with the arm extended downward. Rather, it becomes inefficient.

  In addition, there are cases where a lock mechanism is provided in each of the two sets of locking devices. However, when entering from the platform, both the middle stage and the lower locking devices must be unlocked. It will be efficient. The same applies when entering from the ground, but the crew member unlocks the lower locking device, then steps on the vehicle body, grabs the handrail of the vehicle body with one hand, and puts it in the other hand. The lock of the middle stage lock device is released with the key. For this reason, crew members are forced to work under unstable conditions, which is dangerous.

Although it seems that it is possible to adapt the configuration of the two locking devices of Patent Document 2 to the side doors, each of them must be unlocked with one key, and after all, from the ground on the track side as described above. When entering the operator's cab, the crew member must work in an unstable state because the middle locking device must be unlocked together with the unlocking operation of the lower locking device. In any case, when the lock mechanism is provided in each of the two sets of lock devices, the unlocking operation must be performed twice, which causes a burden on the crew.
In addition, the side door provided on the side of the cab of the railway vehicle is generally a rotary door, and the sliding door is not used in most cases, but foreign railway vehicles adopt the sliding door. There are not a few cases.

  An object of the present invention is to provide a two-stage double locking device for a cab side sliding door that can improve the work efficiency and safety of a crew member.

  In order to solve the above-described problems, the two-stage double locking device for a driver's cab side sliding door according to claim 1 of the present invention is provided in the middle step of the side sliding door of the driver's cab of a railway vehicle and is used as a lock on the vehicle body side. A lock driven mechanism having a lock member that can be engaged, a lower driven mechanism having a driven member that is provided at a lower portion of the side sliding door and interlocked with the lock member, and a lock member and a lower driven mechanism of the lock driven mechanism. A first link mechanism for interlockingly connecting the driven members, first and second operating handles for operating the locked driven mechanism from the driving room and the outdoor, and a third operating handle for operating the lower driven mechanism from the outdoor, A first locking mechanism that can be switched between a locking position in which the locking member of the driven mechanism with lock is non-rotatably locked by a locking member, and an unlocking position; Operating the first locking mechanism. An operation piece that can be operated from the inside of the room, a first key connecting part that can operate the first lock mechanism from the outside with a key, and a lock position that locks the driven member of the lower driven mechanism in a non-rotatable manner by a lock member; A second lock mechanism that can be switched to a lock release position, a second key connecting portion that can be operated from the outside with a key, and a lock member of the first and second lock mechanisms. And a two-link mechanism.

  The two-stage two-locking device for a cab side sliding door according to claim 2 is the invention according to claim 1, wherein the first and second lock mechanisms are a shaft member fixed to the lock member and one end of the shaft member. A support member that rotatably supports the shaft about an axis orthogonal to the side sliding door, and a guide pin provided on the lock member is engaged with an arcuate guide hole formed in the support member It is characterized by.

  According to a third aspect of the invention, the first and second lock mechanisms are held in the lock position when the lock member is in the lock position. A torsion spring for holding that is held in the unlocked position when the lock member is in the unlocked position is provided.

  The two-stage two-locking device for a cab side sliding door according to claim 4 is the invention according to any one of claims 1 to 3, wherein the driven mechanism with lock elastically biases the lock member to the lock position. It is characterized by having a tension spring.

  A two-stage two-locking device for a cab side sliding door according to a fifth aspect of the present invention includes the first and second handle accommodating portions for accommodating the second and third operation handles in the invention according to any one of the first to fourth aspects. It is characterized by that.

  According to the invention of claim 1, when entering the room from the outside of the cab such as the platform or the ground on the railroad side, by connecting a key to one of the first and second key connecting portions and performing a rotation operation, One of the first and second lock mechanisms is operated to switch one lock member from the lock position to the lock release position. Then, the other lock member is also switched from the lock position to the lock release position via the second link mechanism, and the lock of the locked driven mechanism and the lower driven mechanism is released simultaneously. Then, the side sliding door can be easily brought into the unlocked state by rotating any one of the second and third operation handles to disengage the lock member of the lockable driven mechanism from the lock receiver.

  Further, when going out of the cabin from the cab, the first locking mechanism is operated by rotating the operation piece, and the lock member is switched from the lock position to the lock release position. Then, the lock member of the second lock mechanism is also switched from the lock position to the lock release position via the second link mechanism, and the lock of the locked driven mechanism and the lower driven mechanism is released at the same time. Then, the side sliding door can be easily brought into the unlocked state by rotating the first operation handle to disengage the lock member of the driven mechanism with lock from the lock receiver.

  In this way, even when entering the cab from the platform, entering the cab from the ground on the track side, or going out of the cab from the cab, the unlocking operation of the locked driven mechanism and the lower driven mechanism is unlocked once. Can be unlocked. Therefore, the crew member is not forced to work in an unreasonable posture, so that the work efficiency and safety of the crew member can be improved.

  According to a second aspect of the present invention, the first and second lock mechanisms are rotatable about a shaft member fixed to the lock member and one end of the shaft member about an axis perpendicular to the side sliding door. Since the guide member provided on the lock member is engaged with the arcuate guide hole formed in the support member, the rotation of the lock member is restricted by the guide hole and the guide pin. be able to.

  According to the invention of claim 3, the first and second lock mechanisms are held at the lock position when the lock member is in the lock position, and are held at the lock release position when the lock member is at the lock release position. Since the torsion spring is provided, the lock member can be securely held at the locked position and the unlocked position by the holding torsion spring.

  According to the invention of claim 4, since the lower driven mechanism has at least one tension spring that elastically biases the lock member to the lock position, the lock member is returned to the lock position by the elastic bias of the tension spring. Can do.

  According to the invention of claim 5, since the first and second handle accommodating portions for accommodating the second and third operation handles are provided, the second and third operation handles are used as the first and second handle accommodating portions. Can be stored.

It is the front view which looked at the side sliding door provided with the two-stage double locking device of the cab side sliding door of the present invention concerning the example from the outside of the cab. It is the front view which looked at the side sliding door from the driver's cab. It is the front view which looked at the two-stage double locking device from the outside of the cab. It is a side view of a two-stage double locking device. It is a front view of a lock driven mechanism and a lock mechanism of the upper unlocking device of the two-stage two-locking device. It is a cross-sectional view of the principal part of a side sliding door and a vehicle body. It is a longitudinal cross-sectional view of the principal part of a side sliding door and a vehicle body It is a front view of the lower driven mechanism and lock mechanism of a lower unlocking device of a two-stage two-locking device.

  Hereinafter, modes for carrying out the present invention will be described based on examples.

First, the side sliding door 2 of the cab to which the two-stage double locking device 10 for the cab side sliding door of the present invention is applied will be briefly described.
As shown in FIGS. 1 and 2, side sliding doors 2 are provided on both side surfaces of the cab of the railway vehicle 1. The upper part of the side sliding door 2 is suspended via a pair of suspension members 4 slidably engaged with the upper rail member 3 of the vehicle 1 and a plurality of suspension rollers. The vehicle 1 is engaged with the lower rail member 5 on the floor upper surface of the vehicle 1. Thereby, when the side sliding door 2 is in an unlocked state, the side sliding door 2 can slide in the left-right direction along the upper and lower rail members 3, 5. A rubber-like cushioning member 7 for shock absorption and indoor airtightness is attached to one side end of the side sliding door 2 (see FIG. 6). 2, 5, 7, and 8 are assumed to be up, down, left, and right.

Next, the whole structure of the two-stage two-locking device 10 for the cab side sliding door of the present invention will be described.
As shown in FIGS. 1 to 8, the two-stage two-locking device 10 (hereinafter referred to as the two-step two-locking device 10) of the cab side sliding door includes an upper unlocking device 11 and a lower unlocking device 12. And the first and second link mechanisms 13 and 14, the base plate 15, the first and second side plates 17 and 18, and the like. The upper side unlocking device 11 and the lower side unlocking device 12 are respectively provided in the middle and lower portions of the side sliding door 2 via the base plate 15.

  As shown in FIGS. 3 and 4, the base plate 15 is formed of a rectangular metal plate, and has a plurality of longitudinal sides extending vertically from the middle to the bottom of the indoor door surface of the side sliding door 2. It is fixed with a screw member 15d (see FIG. 2). The first and second side plates 17 and 18 are provided in the middle and lower portions of the outdoor door surface of the side sliding door 2 and form substantially the same plane as the door surface. The side plates 17 and 18 are respectively fixed to the base plate 15 by a plurality of screw members via a plurality of spacers 19. The side plates 17 and 18 are respectively formed with key holes 17a and 18a communicating with first and second key connecting portions 27 and 37 described later.

Next, the upper side unlocking device 11 and the lower side unlocking device 12 will be described.
As shown in FIGS. 1 to 8, the upper unlocking device 11 includes a first case member 21, a lock driven mechanism 22, a first lock mechanism 23, first and second operation handles 24 and 25, The operation piece 26, the 1st key connection part 27, the 1st accommodating part 28, etc. are provided. The lower unlocking device 12 includes a second case member 31, a lower driven mechanism 32, a second lock mechanism 33, a third operation handle 35, a second key connecting portion 37, a second accommodating portion 38, and the like. I have. The upper unlocking device 11 and the lower unlocking device 12 are interlocked and connected by first and second link mechanisms 13 and 14. The upper unlocking device 11 is other than the first operation handle 24, the operation piece 26, and the claw portion 46 of the lock member 42 of the lock driven mechanism 22 for enabling the two-stage double locking device 10 to be operated from the inside of the cab. With respect to the configuration, the configuration is the same as that of the lower unlocking device 12.

Next, the first and second case members 21 and 31 will be described. Since the first and second case members 21 and 31 have substantially the same configuration, the first case member 21 will be described here.
As shown in FIGS. 2 and 4, the first case member 21 is formed in a box shape with a metal plate. The case member 21 is fixed to the base plate 15 with a plurality of screw members. Between the base plate 15 and the case member 21, other components such as a lock driven mechanism 22 and a first lock mechanism 23 are provided. On the side surface of the first case member 21, an opening 21 a is formed in which the claw portion 46 of the lock member 42 can rotate by a predetermined angle. The side surface of the second case member 31 has no opening, and other components such as the lower driven mechanism 32 and the second lock mechanism 33 are provided between the base plate 15 and the case member 31. Yes.

Next, the lock driven mechanism 22 will be described.
As shown in FIGS. 1 to 8, the lock driven mechanism 22 includes a rotation shaft portion 41, a lock member 42 (locked drive member) fixed to the rotation shaft portion 41, and the lock member 42 to the lock position. It has two tension springs 43 and 44 that are elastically biased. The lock driven mechanism 22 is provided in the middle part of the side sliding door 2 of the cab of the railway vehicle 1.

  As shown in FIG. 5, the rotation shaft portion 41 is supported by the base plate 15 and the case member 21 so as to be rotatable about an axis perpendicular to the side sliding door 2. By the rotation operation of the rotation shaft portion 41, the lock driven mechanism 22 causes the locking position where the claw portion 46 of the lock member 42 is engaged with the lock receiver 49, and the unlocking where the lock member 42 is detached from the lock receiver 49. The position can be switched.

  As shown in FIGS. 5 and 6, the lock member 42 is formed of a laminated body in which a plurality of metal plates are laminated (see FIG. 6). The lock member 42 includes a pivotal support portion 45 that is externally fitted and fixed to the rotation shaft portion 41, a claw portion 46 that is engaged with the lock receiver 49, a connection portion 48 that is connected to the first link mechanism 13, and the like. ing. A small diameter hole 42a to which the tension spring 43 is coupled and a restricting portion 42b to which the lock member 52 is brought into contact are formed at the lower end of the lock member 42, and a tension spring 44 is coupled to the middle portion of the lock member 42. A connecting pin 42c is provided. In FIG. 5, when the lock member 42 is rotated clockwise, it is defined by the upper edge of the opening 21 a of the first case member 21, so that it can be rotated up to about 20 °.

  As shown in FIGS. 3 and 5, the connecting portion 48 of the lock member 42 is formed by bending a middle portion of an elongated metal plate into a crank shape. The left end portion (inner side end portion) of the connecting portion 48 is fixed to the rotating shaft portion 41 and the pivot support portion 45 by welding or the like, and the middle portion is inserted into the opening portion 15a of the base plate 15, and the right end of the connecting portion 48 is connected. The part (outdoor end) is connected to the upper end of the first link mechanism 13.

  As shown in FIG. 5, the tension spring 43 has one end connected to a connecting pin 53 a provided on the support member 53 and the other end connected to a small diameter hole 42 a of the lock member 42. One end of the tension spring 44 is connected to a connecting pin 15 b provided on the base plate 15, and the other end is connected to a connecting pin 42 c of the lock member 42. These tension springs 43 and 44 elastically urge the lock member 42 to the locked position.

Next, the lock receiver 49 will be described.
As shown in FIGS. 2, 6, and 7, the lock receiver 49 is fixed to a middle portion of the left side surface of the door opening of the side sliding door 2 of the cab by a plurality of screw members 49 b. The lock receiver 49 has a vertically long rectangular opening 49a, and the claw 46 of the lock member 42 is engaged with the lower wall of the opening 49a, so that the side sliding door 2 is locked. can do.

Next, the lower driven mechanism 32 will be described.
As shown in FIGS. 1 to 4 and 8, the lower driven mechanism 32 has a driven member 47 with a lock, except that it has a driven member 47 in which the claw portion 46 of the lock member 42 is omitted instead of the lock member 42. The structure is substantially the same as that of the mechanism 22. The lower driven mechanism 32 is provided in the lower part of the side sliding door 2 of the cab. The right end portion (outdoor end portion) of the connecting portion 48 of the driven member 47 is connected to the lower end portion of the first link mechanism 13, and is driven with a lock through the turning operation of the turning shaft portion 41 of the driven member 47. Switching between a locking position where the claw portion 46 of the locking member 42 of the mechanism 22 engages with the lock receiver 49 and an unlocking position where the locking member 42 is detached from the lock receiver 49 is possible.

Next, the first and second lock mechanisms 23 and 33 will be described. Since the first and second lock mechanisms 23 and 33 have the same configuration, the first lock mechanism 23 will be described here.
As shown in FIG. 5, the first lock mechanism 23 includes a rotation shaft portion 51 (corresponding to a shaft member), a lock member 52 fixed to the rotation shaft portion 51, and a guide pin for guiding the lock member 52. 52a and a support plate 53 (corresponding to a support member) that supports one end of the rotation shaft portion 51. The first lock mechanism 23 can be switched between a lock position where the lock member 42 of the lock driven mechanism 22 is locked by the lock member 51 and a lock release position. The second lock mechanism 33 can be switched between a lock position where the driven member 42 of the lower driven mechanism 32 is locked by the lock member 51 and a lock release position.

  As shown in FIG. 5, the rotation shaft portion 51 is supported by a base plate 15 and a support plate 53 so as to be rotatable about an axis perpendicular to the side sliding door 2. By the turning operation of the turning shaft portion 51, the lock member 52 is switched between a lock position where the lock member 52 abuts on the restriction portion 42b of the lock member 42 and a lock release position where the lock member 52 is detached from the restriction portion 42b of the lock member 42. Is possible.

  As shown in FIG. 5, the lock member 52 is formed from a metal plate in a substantially inverted P shape when viewed from the front, and is externally fixed to the rotating shaft portion 51. A guide pin 52a is provided in the middle portion of the lock member 52, and a lock portion 52b formed in a substantially C shape in a front view with a metal plate is fixed to the outdoor end surface (the back side in FIG. 5) of the lock member 52. ing. In the locked state (the state shown in FIG. 5), the upper end surface of the lock portion 52b is in contact with the lower end surface of the restricting portion 42b of the lock member 42 to restrict the rotation of the lock member 42. In the case of the second lock mechanism 33, the rotation of the driven member 47 is restricted by contacting the lower end surface of the restricting portion 42 b of the driven member 47. In the unlocked state, the lock portion 52b is turned 90 ° counterclockwise from the state shown in FIG. 5 and turned sideways, and the lock portion 52b is detached from the restricting portion 42b, whereby the lock member 42 (second lock mechanism) In the case of 33, it does not interfere with the rotation of the driven member 47). The upper end of the second link mechanism 14 is connected to the lower end of the lock member 52. The lower end portion of the second link mechanism 14 is connected to the lower end portion of the lock member 51 of the second lock mechanism 33.

  The support plate 53 is provided in a bridging manner in the opening 15a of the base plate 15, and is fixed to the base plate 15 with a plurality of screw members 53c. The support plate 53 supports one end portion of the rotation shaft portion 51 so as to be rotatable. Since the guide pin 52a is engaged with the arcuate guide hole 53b formed in the support plate 53, when the lock member 52 is rotated, the lock member 52 is defined by the arcuate guide hole 53b. Therefore, it can be rotated from the locked state (state shown in FIG. 5) to about 90 ° counterclockwise.

Next, the holding torsion spring 55 will be described.
As shown in FIG. 5, one end of the holding torsion spring 55 is fixed to the connecting pin 15 c provided on the base plate 15, and the other end is fixed to the guide pin 52 a. When the lock member 52 is switched, the guide pin 52a is elastically biased about the connecting pin 15c as an axis so that the lock member 52 is in a locked position where the lock portion 52b abuts the restricting portion 42b, and the lock portion 52b is the restricting portion 42b It is possible to switch to the unlocking position where it is released from. The holding torsion spring 55 is held in the locked position when the lock member 52 is in the locked position, and is held in the unlocked position when the lock member 52 is in the unlocked position.

Next, the first to third operation handles 24, 25, and 35 will be described.
As shown in FIGS. 2, 4, 6, 7, and 8, the first operation handle 24 is rotatably attached to the first case member 21 in parallel with the door surface of the side sliding door 2. The shaft portion is engaged with the engagement hole at the indoor side end portion of the rotation shaft portion 41 of the driven mechanism 22 with lock. Since the 1st operation handle 24 is connected with the follower mechanism 22 with a lock | rock, the follower mechanism 22 with a lock | rock can be operated from a driver's cab. The first operation handle 24 can be rotated about 20 ° clockwise in the state shown in FIGS.

  As shown in FIGS. 3 and 5, the second operation handle 25 is attached to the first accommodating portion 28 so as to be rotatable in parallel with the door surface of the side sliding door 2, and the shaft portion of the locking driven mechanism 22 is locked. The rotation shaft portion 41 is engaged with the engagement hole at the outdoor side end portion. Since the second operation handle 25 is connected to the lock driven mechanism 22, the lock driven mechanism 22 can be operated from outside the cab.

  As shown in FIGS. 3 and 8, the third operation handle 35 is attached to the second housing portion 38 so as to be rotatable in parallel with the door surface of the side sliding door 2, and its shaft portion is rotated by the lower driven mechanism 32. The moving shaft portion 41 is engaged with the engaging hole at the outdoor side end portion. Since the third operation handle 35 is connected to the lower driven mechanism 32, the lower driven mechanism 32 can be operated from outside the cab. The second and third operation handles can be rotated about 20 ° clockwise in FIG.

Next, the first and second handle accommodating portions 28 and 38 will be described.
As shown in FIGS. 1 and 3, the first and second handle accommodating portions 28 and 38 accommodate the second and third operation handles 25 and 35. The handle accommodating portions 28 and 38 are formed in a box shape from a metal plate, and are integrally provided on the first and second side plates 17 and 18, respectively.

Next, the operation piece 26 will be described.
As shown in FIGS. 2, 4, and 7, the operation piece 26 is attached to the first case member 21, and a shaft portion of the operation piece 26 is engaged with a front end portion on the indoor side of the rotation shaft portion 51 of the first lock mechanism 23. It is engaged with the joint hole. The operation piece 26 can operate the first lock mechanism from the cab. When the operation piece 26 is in the horizontal direction, the lock follower mechanism 22 is in the locked state, and when the operation piece 26 is in the vertical direction, the lock follower mechanism 22 is in the unlocked state.

Next, the first and second key connection units 27 and 37 will be described.
As shown in FIGS. 3 and 4, the first key coupling portion 27 is formed at the distal end portion of the outdoor shaft portion of the rotation shaft portion 51 of the first lock mechanism 23, and the first lock mechanism 23 is moved from the outside of the cab. It can be operated with a key. The second key connecting portion 37 is formed at the distal end portion of the outdoor shaft portion of the rotation shaft portion 51 of the second lock mechanism 33, and the second lock mechanism 33 can be operated from the outside of the cab with a key. When the first and second lock mechanisms 23 and 33 are operated, keys are inserted into the first and second key connecting portions 27 and 37 from the key holes 17a and 18a formed on the surface of the side plates 17 and 18, respectively. Connected.

Here, the first and second link mechanisms 13 and 14 will be described.
As shown in FIGS. 3 to 5 and 8, the first link mechanism 13 is formed of a straight metal bar, and the upper end portion thereof is connected to the connecting portion 48 of the lock member 42 of the lock driven mechanism 22. The lower end thereof is connected to the connecting portion 48 of the driven member 47 of the lower driven mechanism 32, and the lock member 42 of the driven mechanism 22 with the lock and the driven member 47 of the lower driven member 32 are interlockedly connected. With this first link mechanism 13, the lock member 42 of the lock follower mechanism 22 is brought into contact with the lock receiver 49 through the rotating operation of any of the first to third operation handles 24, 25, 35. The lock state is switched between the engaged state and the unlocked state in which the lock member 42 is detached from the lock receiver 49.

  As shown in FIG. 3 to FIG. 5 and FIG. 8, the second link mechanism 14 is formed by bending the lower part of the metal bar, and its upper end is connected to the lock member 52 of the first lock mechanism 23. The lower end portion is connected to the lock member 52 of the second lock mechanism 33 and interlocks the lock members 52 of the first and second lock mechanisms 23 and 33. The second link mechanism 14 allows the first and second lock mechanisms 23 and 33 to be connected to the lock portion 52b via the operation piece 26 and the rotating operation of one of the first and second key connecting portions 27 and 37. Is switched between a locked state in which the lock portion 52b comes into contact with the restricting portion 42b and an unlocked state in which the lock portion 52b is detached from the restricting portion 42b.

Next, the operation and effect of the two-stage double locking device 10 will be described.
When entering the driver's cab from the platform, the crew member inserts the key from the key hole 17a, connects the key to the first key connecting portion 27, and rotates, so that the first lock mechanism 23 is operated and the lock member 52 is moved. The lock position is switched to the unlock position. Then, the lock member 52 of the second lock mechanism 33 is also switched from the lock position to the lock release position via the second link mechanism 14, and the lock driven mechanism 22 and the second unlocking device 12 of the first unlocking device 11 are switched. The lock of the lower driven mechanism 32 is simultaneously released. Then, when the second operation handle 25 is rotated, the third operation handle 35 interlocked and connected by the first link mechanism 13 is also rotated, and the lock member 42 of the lock driven mechanism 22 is moved from the lock receiver 49. By making it detach | leave, the side sliding door 2 can be made into an unlocked state easily.

  When entering the driver's cab from the ground, the crew member inserts the key from the key hole 18a, connects the key to the second key connecting portion 37, and rotates, so that the second lock mechanism 33 is operated and the lock member 52 is moved. When the lock position is switched to the lock release position, the lock member 52 of the first lock mechanism 23 is also switched from the lock position to the lock release position via the second link mechanism 14, and the lock driven mechanism 22 and the lower driven mechanism 32 are The lock is released at the same time. Then, when the third operation handle 35 is rotated, the second operation handle 25 interlocked and connected by the first link mechanism 13 is also rotated, and the lock member 42 of the lock driven mechanism 22 is moved from the lock receiver 49. By making it detach | leave, the side sliding door 2 can be made into an unlocked state easily.

  When exiting from the cab, when the first locking mechanism 23 is operated and the lock member 52 is switched from the locked position to the unlocked position by rotating the operation piece 26, the second link mechanism 14 is used. Thus, the lock member 52 of the second lock mechanism 33 is also switched from the lock position to the lock release position, and the locked driven mechanism 22 and the lower driven mechanism 32 are simultaneously unlocked. Then, the side sliding door 2 can be easily brought into the unlocked state by rotating the first operation handle 24 to disengage the lock member 42 of the lock driven mechanism 22 from the lock receiver 49.

  In this way, when entering the cab from the platform, entering the cab from the ground on the track side, or exiting from the cab outside the cab, the locked driven mechanism 22 and the second opening of the first unlocking device 11 are provided. Since the lock of the lower driven mechanism 32 of the lock device 12 can be unlocked by a single unlocking operation, it is not necessary to force the crew to work in an unreasonable posture, so that the work efficiency and safety of the crew are improved. Can do.

  The first and second lock mechanisms 23 and 33 are capable of rotating about a rotation shaft 51 fixed to the lock member 52 and one end of the rotation shaft 51 around an axis perpendicular to the side sliding door 2. Since the guide plate 52a provided on the lock member 52 is engaged with the arcuate guide hole 53b formed on the support plate 53, the support member 53 is supported. It can be regulated by 53b and guide pin 52a.

  The first and second lock mechanisms 23 and 33 include a holding torsion spring 55 that holds the lock member 52 in the lock position when the lock member 52 is in the lock position and holds the lock member 52 in the lock release position when the lock member 52 is in the lock release position. Therefore, the lock member 52 can be reliably held at the locked position and the unlocked position by the holding torsion spring 55.

  The lock driven mechanism 22 of the first unlocking device 11 has two tension springs 43 and 44 that elastically urge the lock member 42 to the lock position, so that the lock member 42 is moved by the elastic bias of the tension springs 43 and 44. It can be returned to the locked position. The lower driven mechanism 32 of the second unlocking device 12 includes the two tension springs 43 and 44 that elastically urge the driven member 47 to the locked position. Therefore, the driven member 47 is locked by the elastic urging of the tension springs 43 and 44. Can be returned to position.

Next, a modified example in which the above embodiment is partially modified will be described.
1] The shape of the lock member and the shape of the lock member illustrated in the embodiments are merely examples, and can be changed as appropriate.
2] In addition, those skilled in the art can implement the present invention with various modifications added thereto without departing from the spirit of the present invention.

  The two-stage two-locking apparatus of the present invention can be applied to a two-stage two-locking apparatus for various cab side sliding doors of a railway vehicle.

DESCRIPTION OF SYMBOLS 1 Rail vehicle 2 Side sliding door 10 Two-stage two locking device 11 Upper side unlocking device 12 Lower side unlocking device 13 1st link mechanism 14 2nd link mechanism 22 Follower mechanism 23 with a lock | rock 1st lock mechanism 24 1st operation handle 25 2nd operation handle 26 Operation piece 27 1st key connection part 28 1st accommodating part 32 Lower driven mechanism 33 2nd lock mechanism 34 3rd operation handle 37 2nd key connection part 38 2nd accommodating part 42 Locking members 43 and 44 Pull Spring 47 Follower member 49 Lock receiver 52 Lock member 52a Guide pin 53 Support plate 55 Torsion spring for holding

Claims (5)

A driven mechanism with a lock that is provided at the middle part of the side sliding door of the cab of the railway vehicle and has a locking member that can be engaged with a lock receiver on the vehicle body side, and a driven that is provided at the lower part of the side sliding door and interlocked with the locking member A lower driven mechanism having a member, a first link mechanism that interlocks and connects the lock member of the driven mechanism with the lock and the driven member of the lower driven mechanism, and a first that can operate the driven mechanism with the lock from the cab and the outdoor respectively. In the two-stage two-locking device for the side sliding door of the cab having the second operation handle and the third operation handle capable of operating the lower driven mechanism from the outside,
A first lock mechanism that can be switched between a lock position that locks the lock member of the driven mechanism with lock in a non-rotatable manner with a lock member, and a lock release position;
An operation piece capable of operating the first lock mechanism from the cab;
A first key coupling unit operable to operate the first lock mechanism from outside with a key;
A second lock mechanism that can be switched between a lock position where the driven member of the lower driven mechanism is non-rotatably locked by a lock member, and a lock release position;
A second key coupling portion operable to operate the second lock mechanism from the outside with a key;
A second link mechanism for interlockingly connecting the lock members of the first and second lock mechanisms;
A two-stage double locking device for a cab side sliding door.   The first and second lock mechanisms include a shaft member fixed to the lock member, and a support member that supports one end of the shaft member so as to be rotatable about an axis perpendicular to the side sliding door. The two-stage double locking device for a cab side sliding door according to claim 1, wherein a guide pin provided on the lock member is engaged with an arc-shaped guide hole formed on the support member.   The first and second lock mechanisms include a holding torsion spring that holds the lock member in the lock position when the lock member is in the lock position and holds the lock member in the lock release position when the lock member is in the lock release position. The two-stage two-locking device for a side sliding door of a cab according to claim 1 or 2.   The two-stage double door of the cab side sliding door according to any one of claims 1 to 3, wherein the lock driven mechanism includes at least one tension spring that elastically biases the lock member to a lock position. Locking device.   The two-stage double locking device for a cab side sliding door according to any one of claims 1 to 4, further comprising first and second handle accommodating portions for accommodating the second and third operation handles.

Images