A manual unlocking mechanism for a sliding door of a rail transit platform door

Abstract

A manual unlocking mechanism for a sliding door of a rail transit platform door comprises a lock pull rod, a key unlocking assembly is connected to the upper part of the lock pull rod, a rotation unlocking assembly is connected to the lower part of the lock pull rod, and a sliding door handle is connected to the key unlocking assembly; the key unlocking assembly comprises a handle cover plate and a lock, the lock is installed on the inner side of the handle cover plate, the sliding door handle has an operating end and a linkage end, a movable hole is provided on the handle cover plate, the operating end of the sliding door handle is arranged on the outer side of the handle cover plate, and the linkage end of the sliding door handle extends into the movable hole of the handle cover plate and is connected to the lock, and the linkage end of the sliding door handle is also installed and connected to the upper end of the lock pull rod; the rotation unlocking assembly is operated to drive the lock pull rod to move upward to rotate and unlock the sliding door handle; or the key is used to rotate the lock to drive the sliding door handle to rotate and unlock. The present invention is easy to operate, can achieve the independence of key and toggle arm unlocking, and is more flexible to operate.

Description

Technical Field

[0001] The invention relates to the field of rail transportation, in particular to a manual unlocking mechanism for a sliding door of a rail transportation platform door. Background Art

[0002] In rail transit, such as subways, door head locks are required in platform doors to lock sliding doors. Door head locks are usually equipped with corresponding automatic unlocking mechanisms. However, in some special cases, such as when the automatic unlocking mechanism may be damaged, fail, or need to be unlocked urgently, if the sliding door needs to be opened, it must be unlocked manually. This door head lock must be unlocked by the unlocking mechanism in the sliding door and the sliding door can be opened. In most manual unlocking mechanisms for sliding doors on the market, the handle unlocking mechanism needs to be fixed, and the lock core is fixed separately, but both have concentricity requirements. If the manufacturing control is not rigorous, it will cause unlocking problems. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a manual unlocking mechanism for a sliding door of a rail transit platform door.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A manual unlocking mechanism for a sliding door of a rail transit platform door comprises a lock rod, the upper portion of the lock rod is connected to a key unlocking assembly, the lower portion of the lock rod is connected to a rotation unlocking assembly, and a sliding door handle is connected to the key unlocking assembly; the key unlocking assembly comprises a handle cover and a lock, the lock is installed on the inner side of the handle cover, the sliding door handle has an operating end and a linkage end, a movable hole is provided on the handle cover, the operating end of the sliding door handle is provided on the outer side of the handle cover, and the linkage end of the sliding door handle extends into the movable hole of the handle cover and is connected to the lock, and the linkage end of the sliding door handle is also installed and connected to the upper end of the lock rod; operating the rotation unlocking assembly drives the lock rod to move upward to rotate and unlock the sliding door handle; or a key is used to rotate the lock to drive the sliding door handle to rotate and unlock.

[0006] The lock comprises a lock sleeve, a lock core cover, a lock core and a lock seat. The lock core cover is sleeved on the lock core and inserted into the lock sleeve. The lock sleeve is connected to the lock seat through a gasket. A spring is installed on the lock core and connected to the lock seat through a pressing sheet and a bolt.

[0007] The upper end of the lock pull rod is installed and connected with the linkage end of the sliding door handle through a pin shaft and a cotter pin.

[0008] The rotation unlocking assembly includes a lower mounting bracket, a lower connecting block, a lower spring and a lower toggle arm. One end of the lower toggle arm is movably inserted into the lower mounting bracket and is fixedly connected to the lower connecting block through a shaft sleeve. The lower end of the lock rod extends into the lower mounting bracket and is connected to the lower connecting block. The rotating toggle arm drives the lower connecting block to rotate.

[0009] A lower spring is sleeved on the lower part of the lock pull rod, the lower end of the lower spring is connected to the lower end of the lock pull rod, and the upper end is connected to the lower mounting bracket.

[0010] The lower end of the lock pull rod is connected to the lower connecting block through a pin and a cotter pin.

[0011] The lower connecting block is inserted into the shaft sleeve and the toggle arm through bolts and is locked, so that the toggle arm, the shaft sleeve and the lower connecting block are assembled and assembled.

[0012] The invention is easy to operate, can independently unlock the key and the toggle arm, can be operated from the track side and the platform side respectively, and is more flexible to operate. The lock is fixed to other components, and the handle is also relatively fixed accordingly, and there is no need to assemble with concentricity requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0014] Attached Figure 2 For attachment Figure 1 A schematic diagram of the three-dimensional structure of the key unlocking assembly at A in the middle;

[0015] Attached Figure 3 It is an exploded schematic diagram of the key unlocking component in the present invention;

[0016] Attached Figure 4 For attachment Figure 1 A schematic diagram of the three-dimensional structure of the rotation unlocking component at B in the middle;

[0017] Attached Figure 5 It is a schematic diagram of the exploded view of the rotation unlocking component in the present invention. DETAILED DESCRIPTION

[0018] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] As attached Figure 1-5As shown, the present invention discloses a manual unlocking mechanism for a sliding door of a rail transit platform door, comprising a lock rod 1, a key unlocking assembly connected to the upper portion of the lock rod, a rotation unlocking assembly connected to the lower portion of the lock rod, and a sliding door handle 2 connected to the key unlocking assembly; the key unlocking assembly comprises a handle cover plate 3 and a lock 4, the lock 4 is installed on the inner side of the handle cover plate 3, the sliding door handle 2 has an operating end 21 and a linkage end 22, a movable hole is provided on the handle cover plate 3, the operating end 21 of the sliding door handle 2 is arranged on the outer side of the handle cover plate 3, and the linkage end 22 of the sliding door handle 2 extends into the movable hole of the handle cover plate 3 and is connected to the lock 4, and the linkage end 22 of the sliding door handle 2 is also installed and connected to the upper end of the lock rod 1; operating the rotation unlocking assembly drives the lock rod to move upward to rotate and unlock the sliding door handle; or using a key to rotate the lock to drive the sliding door handle to rotate and unlock. The handle cover plate 3 is composed of a handle inner cover plate 31 and a handle outer cover plate 32 connected side by side. Corresponding installation cavities are arranged in the handle inner cover plate and the handle outer cover plate, and the lock is installed in the installation cavity.

[0020] The lock 4 comprises a lock sleeve 41, a gasket 42, a lock core cover 43, a lock core 44 and a lock seat 46. The lock core cover 42 is mounted on the lock core 43 and inserted into the lock sleeve 41. The lock sleeve 41 is connected to the lock seat 46 through the gasket 42. A spring 45 is mounted on the lock core 44. The spring 45 is connected to the lock seat 46 through a pressing piece 47 and a bolt 5. The lock seat is locked with a nut 478. By inserting a matching key into the lock core, the lock core can be rotated, thereby driving the sliding door handle to rotate together to unlock the sliding door.

[0021] The upper end of the lock rod 1 is connected to the linkage end 22 of the sliding door handle 2 via a pin shaft and a cotter pin 6, thereby ensuring the convenience of assembly and the stability of installation.

[0022] The rotating unlocking assembly includes a lower mounting bracket 71, a lower connecting block 73 and a toggle arm 72. One end of the toggle arm 72 is movably inserted into the lower mounting bracket 71 and is fixedly connected to the lower connecting block 73 through a shaft sleeve 75. The lower end of the lock pull rod 1 extends into the lower mounting bracket 71 and is connected to the lower connecting block 73. The rotation of the toggle arm drives the lower connecting block to rotate. A lower spring 74 is sleeved on the lower part of the lock pull rod 1. The lower end of the lower spring 74 is connected to the lower end of the lock pull rod 1 and the upper end is connected to the lower mounting bracket 71. With the spring, when the lock pull rod moves up, the lower spring will be compressed, which helps to automatically reset. The toggle arm is rotated, and the toggle arm drives the lower connecting block to rotate. During the rotation process, the lock pull rod will be lifted up, so that the lock pull rod moves up, thereby lifting the linkage end of the sliding door handle upward, and then rotating to complete the unlocking.

[0023] The lower end of the locking rod 1 is connected to the lower connecting block 73 via a pin 10 and a cotter pin 9 .

[0024] The lower connecting block 73 is inserted into the shaft sleeve 75 and the toggle arm 72 through the bolt 8 and is locked, so that the toggle arm, the shaft sleeve and the lower connecting block are assembled and assembled.

[0025] In the present invention, the handle and the lock are fixed by fixing the handle cover plate to other external devices. There is no need to fix the handle and the lock separately, which avoids fastening installation at two places. The structure is simple and more reliable.

[0026] Platform side unlocking:

[0027] The matching key is inserted into the lock core to drive the lock core to rotate, and then drive the linkage end of the sliding door handle to rotate to complete the unlocking. At this time, the spring connected to the lock core is compressed by rotation, which is conducive to the reset of the lock core.

[0028] Track side unlocking:

[0029] By rotating the toggle arm, the lower connecting block is driven to rotate, and then the lock pull rod is lifted, so that the sliding door handle is rotated to complete the unlocking.

[0030] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A manual unlocking mechanism for a sliding door of a rail transit platform door, characterized in that: It comprises a lock pull rod, the upper part of the lock pull rod is connected with a key unlocking assembly, the lower part of the lock pull rod is connected with a rotation unlocking assembly, and the sliding door handle is connected with the key unlocking assembly; the key unlocking assembly comprises a handle cover plate and a lock, the handle cover plate is composed of a handle inner cover plate and a handle outer cover plate connected side by side, the handle inner cover plate and the handle outer cover plate are provided with an installation cavity, the lock is installed in the installation cavity, the sliding door handle has an operating end and a linkage end, a movable hole is provided on the handle cover plate, the operating end of the sliding door handle is arranged on the outer side of the handle cover plate, and the linkage end of the sliding door handle extends into the movable hole of the handle cover plate and is connected with the lock, and the linkage end of the sliding door handle is also installed and connected with the upper end of the lock pull rod; operating the rotation unlocking assembly drives the lock pull rod to move upward to rotate and unlock the sliding door handle; or the key is used to rotate the lock to drive the sliding door handle to rotate and unlock; The lock comprises a lock sleeve, a lock core cover, a lock core and a lock seat. The lock core cover is sleeved on the lock core, the lock core is inserted into the lock sleeve, the lock sleeve is connected to the lock seat through a gasket, and a spring is installed on the lock core, which is connected to the lock seat through a pressing piece and a bolt; The upper end of the lock pull rod is installed and connected to the linkage end of the sliding door handle through a pin shaft and a cotter pin; The rotation unlocking assembly includes a lower mounting bracket, a lower connecting block, a lower spring and a lower toggle arm. One end of the lower toggle arm is movably inserted into the lower mounting bracket and is fixedly connected to the lower connecting block through a shaft sleeve. The lower end of the lock rod extends into the lower mounting bracket and is connected to the lower connecting block. The rotating toggle arm drives the lower connecting block to rotate.

2. The manual unlocking mechanism for sliding doors of rail transit platform doors according to claim 1, characterized in that: A lower spring is sleeved on the lower part of the lock pull rod, the lower end of the lower spring is connected to the lower end of the lock pull rod, and the upper end is connected to the lower mounting bracket.

3. The manual unlocking mechanism for sliding doors of rail transit platform doors according to claim 2, characterized in that: The lower end of the lock pull rod is connected to the lower connecting block through a pin and a cotter pin.

4. The manual unlocking mechanism for sliding doors of rail transit platform doors according to claim 3, characterized in that: The lower connecting block is inserted into the shaft sleeve and the toggle arm through bolts and is locked, so that the toggle arm, the shaft sleeve and the lower connecting block are assembled and assembled.

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