Safety door lock and rail transit half-height safety door

Abstract

The safety door lock and the rail transit half-height safety door comprise a mounting base, a lock hook driving plate, an unlocking assembly and a signal assembly, the lock hook driving plate is provided with a lock opening, and the lock hook driving plate is provided with a locking position for limiting a sliding door lock pin in the lock opening and a releasing position for releasing the sliding door lock pin; the unlocking assembly comprises a telescopic driving part and a shifting fork plate, one end of the shifting fork plate is provided with an unlocking blocking column, the unlocking blocking column penetrates through the mounting base and is in transmission connection with a telescopic rod on the telescopic driving part, and the unlocking blocking column and the telescopic rod can synchronously move so that the lock hook driving plate can be switched between a locking position and a releasing position under the control of the unlocking blocking column; the signal assembly comprises a stroke push plate and a position sensor, the stroke push plate is slidably connected to the mounting base and is in transmission connection with the unlocking stop column, and the stroke push plate can trigger the position sensor under driving of the unlocking stop column. Therefore, not only can the smoothness of the safety door lock during working be improved, but also the occupied space required by the assembly of the safety door lock can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field related to locks, and particularly relates to a door lock for a security door and a semi-height platform screen door for rail transit. Background Art

[0002] In the industry of semi-height platform screen doors for rail transit, the sliding door is an important passage between the daily operation track and the platform, and is also an important unit for ensuring the safety of passengers. The door lock is an important mechanism for ensuring the safety of semi-height platform screen doors for rail transit. Among them, the design of the door lock must include the following important functional contents: 1. When the sliding door is driven by a motor through a belt to the closed state, the lock pin of the sliding door activates the door lock to lock. Without receiving an opening signal or a manual unlocking action, the sliding door cannot be opened by an external force, thus playing a role in safety locking. When the door lock receives an unlocking signal, the electromagnet in the door lock is energized to start, and the electromagnetic telescopic rod drives the stroke push plate to trigger the switch to unlock. At this time, the lock pin is released, and the sliding door can be opened. 2. For safety considerations, the door lock also needs to have a manual unlocking function to cope with unlocking in case of emergency or power failure. Therefore, in the design requirements of the platform screen door system, the door lock must have feedback on locking / releasing / manual unlocking signals, which requires the door lock structure to be equipped with a travel switch and a structure for activating the switch.

[0003] At present, the unlocking component in the door lock of the existing semi-height platform screen door for rail transit includes an electromagnet and a lock hook dial. The lock hook dial is used to lock / unlock the sliding door lock pin, and the electromagnet is used to drive the lock hook dial to act to lock or release the sliding door lock pin. However, there is a direct connection between the existing electromagnet and the lock hook dial, and the telescopic movement of the telescopic rod on the electromagnet directly drives the lock hook dial to unlock / lock the sliding door lock pin on the sliding door. However, due to the direct connection between the telescopic rod of the electromagnet and the lock hook dial, the movable iron core on the electromagnet is prone to jamming during unlocking and resetting, which will affect the safety and stability of the semi-height platform screen door for rail transit equipped with this door lock. Summary of the Utility Model

[0004] In view of this, it is necessary to provide a door lock for a security door and a semi-height platform screen door for rail transit that can smoothly release and lock the sliding door lock pin and has good safety and stability.

[0005] A door lock for a security door, the door lock for a security door comprising:

[0006] A mounting seat;

[0007] A lock hook dial rotatably mounted on the mounting seat, the lock hook dial having a lock opening for the sliding door lock pin to be inserted into, the lock hook dial having a locking position for restricting the sliding door lock pin in the lock opening and a releasing position for releasing the sliding door lock pin;

[0008] An unlocking assembly is installed on the mounting base. The unlocking assembly includes a telescopic driving member and a fork plate. The fork plate is rotatably connected to the mounting base. Wherein, an unlocking stop post is provided at one end of the fork plate. The unlocking stop post penetrates through the mounting base and is in transmission connection with the telescopic rod on the telescopic driving member. Along the movement direction of the telescopic rod, the unlocking stop post can move synchronously with the telescopic rod, so that the locking hook dial can be switched between the locking position and the release position under the control of the unlocking stop post;

[0009] A signal assembly is installed on the mounting base. The signal assembly includes a travel push plate and a position sensor. The travel push plate is slidably connected to the mounting base and is in transmission connection with the unlocking stop post. And the travel push plate can trigger the position sensor under the drive of the unlocking stop post, so that the position sensor generates a feedback signal;

[0010] Along the extending direction of the unlocking stop post, the unlocking stop post penetrates through the travel push plate and the telescopic rod.

[0011] It can be understood that through the above structural settings, the telescopic driving member can control the locking hook dial to switch between the locking position and the release position through the unlocking stop post on the fork plate, avoiding the direct connection between the telescopic rod on the telescopic driving member and the locking hook dial. This can ensure the smoothness of the safety door lock when releasing the sliding door lock pin, thereby improving the safety and stability of the rail transit semi-height safety door applied with this safety door lock; at the same time, due to the unlocking stop post penetrating through the travel push plate and the telescopic rod, this can also reduce the occupied space required for the assembly of the travel push plate, the fork plate and the telescopic plate, and ensure the compactness of the overall structure of the safety door lock.

[0012] In one embodiment, a first chute is formed on the mounting base. The unlocking stop post penetrates through the first chute and is in sliding fit with the first chute. The first chute extends along the movement direction of the telescopic driving member;

[0013] Wherein, the part of the unlocking stop post located on the back surface of the mounting base can be in contact with the outer peripheral surface of the locking hook dial, and the part of the unlocking stop post located on the front surface of the mounting base is in plug-in fit with the telescopic rod.

[0014] It can be understood that through the above structural arrangement, the unlocking stop post can move along the first sliding groove and form a first position and a second position corresponding to the locking position and the releasing position of the locking hook dial respectively. When the unlocking stop post is in the first position, the unlocking stop post abuts against the outer peripheral surface of the locking hook dial to prevent the locking hook dial in the locking position from rotating. When the unlocking stop post is in the second position, the unlocking stop post releases the locking of the locking hook dial in the locking position, enabling the locking hook dial to rotate under the drive of the sliding door lock pin and switch to the releasing position. In addition, the mounting seat can use the first sliding groove to guide the movement track of the unlocking stop post driven by the telescopic rod, thus preventing the telescopic rod on the telescopic driving member from over-traveling.

[0015] In one embodiment, the mounting seat includes a first plate body and a second plate body connected vertically. The second plate body extends towards the front direction of the first plate body, and the safety door lock can be assembled into the semi-high safety door of the rail transit through the second plate body.

[0016] The locking hook dial is assembled to the back surface of the first plate body, and both the unlocking assembly and the signal assembly are assembled to the front surface of the first plate body.

[0017] The position sensor is arranged in the upper area on the left side of the first plate body, the telescopic driving member is arranged in the lower area on the left side of the first plate body, the stroke push plate is arranged between the position sensor and the telescopic driving member, and the fork plate is arranged on the right side of the first plate body.

[0018] It can be understood that through the above structural arrangement, the safety door lock can be assembled with the mounting seat as the mounting base, and the safety door lock can utilize the space of the first plate body when it is assembled in the semi-high safety door of the rail transit to accommodate the unlocking assembly and the signal assembly, which plays a role in reducing the space required for the assembly of the safety door lock and making the overall structure of the safety door lock compact.

[0019] In one embodiment, the outer peripheral surface of the locking hook dial has a locking surface, an unlocking avoidance surface, and a convex arc surface, and the locking surface and the unlocking avoidance surface are transitioned through the convex arc surface.

[0020] Among them, the locking surface is arranged to match the outer peripheral wall of the unlocking stop post, and the unlocking stop post can abut against the locking surface to limit the locking hook dial to the locking position, so that the locking hook dial locks and engages the sliding door lock pin in the lock port.

[0021] When the unlocking stop post releases the locking of the locking hook dial, the locking hook dial can abut against the unlocking stop post through the unlocking avoidance surface to limit the locking hook dial to the releasing position, so that the lock port is available for the sliding door lock pin to engage.

[0022] It can be understood that through the above structural settings, on the one hand, the unlocking stop post can improve the stability of the control when the unlocking stop post locks the lock hook dial, and on the other hand, it can also limit the rotation when unlocking the lock hook dial, creating conditions for the subsequent sliding door lock pin to be inserted into the lock hook dial.

[0023] In one embodiment, the safety door lock further includes an elastic member, and the elastic member abuts against the lock hook dial in a pre-deformed manner for driving the lock hook dial to rotate and reset on the mounting seat.

[0024] It can be understood that by using the elastic push of the elastic member on the lock hook dial, when the unlocking stop post releases the lock on the lock hook dial, the lock hook dial can automatically unlock the sliding door lock pin.

[0025] In one embodiment, a guiding opening is formed on the lock hook dial, the guiding opening is communicated with the locking opening, and the guiding opening is used for guiding the sliding door lock pin to be inserted into the locking opening;

[0026] Along the depth direction of the locking opening, the locking surface, the unlocking avoidance surface and the convex arc surface are all arranged at a position below the guiding opening.

[0027] It can be understood that using the guiding opening to guide the sliding door lock pin to be inserted into the locking opening of the lock hook dial enables the lock hook dial to reduce the manufacturing precision and assembly precision of the safety door lock on the basis of realizing the locking of the sliding door lock pin, and has the effect of facilitating the processing, production and assembly application of the safety door lock.

[0028] In one embodiment, a plurality of sliding guiding parts are arranged on the stroke push plate, and the stroke push plate can be slidably connected to the mounting seat through the plurality of sliding guiding parts;

[0029] The stroke push plate includes a stroke push plate body, the stroke push plate body extends along the horizontal direction of the mounting seat, and on one side of the stroke push plate body, it extends vertically downward and forms an extension part, and the extension part can be inserted and matched with the opening groove on the telescopic rod;

[0030] The fork plate is located on the outer side surface of the telescopic rod, and the unlocking stop post sequentially penetrates through the telescopic rod, the extension part and the fork plate.

[0031] It can be understood that multiple sliding guiding parts are used to guide the sliding of the stroke push plate on the mounting base, which can effectively limit the stroke range of the telescopic rod when the telescopic driving part works, making the triggering position of the position sensor by the stroke push plate more accurate; moreover, the extension part on the stroke push plate is inserted and matched with the opening groove on the telescopic rod, and the unlocking stop post sequentially penetrates through the telescopic rod, the extension part and the fork plate, so that the assembly of the stroke push plate does not need to occupy space in its thickness direction, which has the effect of further reducing the volume required for the assembly of the safety door lock.

[0032] In one embodiment, the number of the position sensors is configured to be multiple, and the multiple position sensors can be triggered by the stroke push plate simultaneously;

[0033] Wherein, each of the position sensors includes a triggering roller, a pushing inclined surface corresponding to the triggering roller is formed on the stroke push plate, the triggering roller is rollably abutted against the corresponding pushing inclined surface, and the pushing inclined surface can push the triggering roller under the drive of the stroke push plate to trigger the position sensor.

[0034] It can be understood that through the above structural arrangement, the safety door lock performs redundant design on the signal triggering when unlocking the sliding door lock pin, which can ensure the accuracy of the signal feedback when the safety door lock is unlocked.

[0035] In one embodiment, the middle part of the fork plate is connected to the mounting base in a hinged manner, the unlocking stop post penetrates through the lower end of the fork plate, and an unlocking lever is arranged at the upper end of the fork plate;

[0036] Wherein, a U-shaped groove is formed on the mounting base, the unlocking lever extends outwards through the U-shaped groove and can be manually driven, and the fork plate can drive the unlocking stop post to move under the drive of the unlocking lever.

[0037] It can be understood that through the above structural arrangement, the unlocking lever can be used for manual unlocking to meet the use requirements of the semi-high safety door of rail transit.

[0038] In addition, the present application also claims to protect a semi-high safety door for rail transit, including the safety door lock described above.

[0039] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0040] The security door lock and the semi-height security door for rail transit claimed in this application. The telescopic driving member can control the locking hook dial to switch between the locking position and the releasing position through the unlocking stop column on the fork plate, avoiding the direct connection between the telescopic rod on the telescopic driving member and the locking hook dial. This can ensure the smoothness of the security door lock when releasing the sliding door lock pin, thereby improving the safety and stability of the semi-height security door for rail transit equipped with this security door lock. At the same time, due to the arrangement that the unlocking stop column penetrates the stroke push plate and the telescopic rod, it can also reduce the occupied space required for the assembly of the stroke push plate, the fork plate and the telescopic plate, and ensure the compactness of the overall structure of this security door lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0042] Figure 1 It is a schematic structural diagram of the security door lock provided by the present application, in which the locking hook dial is in the locking position.

[0043] Figure 2 It is a schematic structural diagram of another perspective of the security door lock provided by the present application, in which the locking hook dial is in the locking position.

[0044] Figure 3 It is Figure 2 the enlarged view of part A in

[0045] Figure 4 It is a schematic structural diagram of another perspective of the security door lock provided by the present application, in which the locking hook dial is in the releasing position.

[0046] Figure 5 It is Figure 4 the enlarged view of part B in

[0047] Figure 6 It is an exploded view of the security door lock provided by the present application.

[0048] Reference numerals: 100, safety door lock; 10, mounting base; 101, back surface; 102, front surface; 11, first plate body; 111, retaining post; 112, first chute; 113, guide rod; 1131, bearing; 114, U-shaped groove; 12, second plate body; 20, lock hook dial; 201, elastic member; 21, lock port; 22, guiding port; 23, locking surface; 24, unlocking avoidance surface; 25, through hole; 26, convex arc surface; 30, unlocking assembly; 31, telescopic driving member; 311, telescopic rod; 3111, opening groove; 32, fork plate; 321, unlocking retaining post; 3211, nut; 322, unlocking lever; 40, signal assembly; 41, stroke push plate; 401, stroke push plate body; 402, extension portion; 411, sliding guiding portion; 4111, second chute; 412, pushing inclined surface; 413, receiving groove; 42, position sensor; 421, triggering roller; 200, sliding door lock pin. Detailed implementation mode

[0049] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0050] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there may also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model are only for the purpose of describing specific implementation modes and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0052] Such as Figures 1 to 6As shown, the security door lock 100 provided by the present application includes a mounting seat 10, a lock hook dial 20, an unlocking assembly 30 and a signal assembly 40. The lock hook dial 20 is rotatably mounted on the mounting seat 10. The lock hook dial 20 has a lock hole 21. The lock hole 21 can be inserted into the sliding door lock pin 200. The lock hook dial 20 has a locking position that limits the sliding door lock pin 200 in the lock hole 21, and a release position that releases the sliding door lock pin 200; the unlocking assembly 30 is installed on the mounting seat 10, and the unlocking assembly 30 includes a telescopic driving member 31 and a fork plate 32. The fork plate 32 is rotatably connected to the mounting seat 10, wherein an unlocking stop column 321 is provided at one end of the fork plate 32, and the unlocking stop column 321 passes through the mounting seat 10 and is connected to the telescopic driving member The telescopic rod 311 on the component 31 is transmission connected, and the unlocking stop column 321 can move synchronously with the telescopic rod 311 along the movement direction of the telescopic rod 311, so that the lock hook dial 20 can switch between the locking position and the release position under the control of the unlocking stop column 321; the signal component 40 is installed on the mounting seat 10, and the signal component 40 includes a travel push plate 41 and a position sensor 42. The travel push plate 41 is slidably connected to the mounting seat 10 and is transmission connected to the unlocking stop column 321, and the travel push plate 41 can trigger the position sensor 42 under the drive of the unlocking stop column 321, so that the position sensor 42 generates a feedback signal; along the extension direction of the unlocking stop column 321, the unlocking stop column 321 runs through the travel push plate 41 and the telescopic rod 311. Here, the locking position of the lock hook dial 20 is the position when the lock hook dial 20 can lock the sliding door lock pin 200, and the release position of the lock hook dial 20 is the position when the lock hook dial 20 releases the lock of the sliding door lock pin 200. The unlocking stop column 321 can achieve the locking of the lock hook dial 20 on the sliding door lock pin 200 in the lock port 21 by limiting the rotation of the lock hook dial 20 on the mounting seat 10. It should be noted that the above-mentioned "the lock hook dial 20 can be switched between the locking position and the release position under the control of the unlocking stop column 321" specifically means that the unlocking stop column 321 can control whether the lock hook dial 20 is limited in rotation to finally achieve the control of the lock hook dial 20 being able to switch between the locking position and the release position.

[0053] As can be seen from the above, when the safety door lock 100 works, the unlocking stop post 321 is displaced under the drive of the telescopic drive member 31 or the fork plate 32, so that the lock hook dial 20 is switched between the locking position and the release position, avoiding the direct connection between the telescopic rod 311 on the telescopic drive member 31 and the lock hook dial 20. This can ensure the smoothness of the safety door lock 100 when unlocking the sliding door lock pin 200, thereby improving the safety and stability of the rail transit half-height safety door applied with the safety door lock 100. At the same time, by utilizing the coaxial assembly relationship among the stroke push plate 41, the fork plate 32 and the telescopic rod 311, the occupied space required for the assembly of the stroke push plate 41, the fork plate 32 and the telescopic rod 311 can also be reduced, and the overall structure of the safety door lock 100 can be ensured to be compact, so as to facilitate the assembly and application of the safety door lock 100 in the rail transit half-height safety door.

[0054] It should be noted that since the unlocking stop post 321 provided on the fork plate 32 penetrates through the stroke push plate 41 and the telescopic rod 311 in the extending direction, the fork plate 32, the stroke push plate 41 and the telescopic rod 311 can be coaxially stacked and connected for installation.

[0055] As Figure 1 , Figure 2 and Figure 6 shown, the mounting seat 10 has an L-shaped structure. The mounting seat 10 specifically includes a first plate body 11 and a second plate body 12 that are vertically connected. The second plate body 12 extends toward the front surface 102 of the first plate body 11. The lock hook dial 20 is assembled to the back surface 101 of the first plate body 11, and the unlocking assembly 30 and the signal assembly 40 are both assembled to the front surface 102 of the first plate body 11. Among them, the safety door lock 100 can be assembled to the rail transit half-height safety door through the second plate body 12. That is to say, the safety door lock 100 can be assembled with the mounting seat 10 as the mounting base, and the safety door lock 100 can utilize the space of the first plate body 11 when it is assembled in the rail transit half-height safety door to accommodate the unlocking assembly 30 and the signal assembly 40, which plays a role in reducing the space required for the assembly of the safety door lock 100. Here, the position sensor 42 is arranged in the upper area on the left side of the first plate body 11, the telescopic drive member 31 is arranged in the lower area on the left side of the first plate body 11, the stroke push plate 41 is arranged between the position sensor 42 and the telescopic drive member 31, and the fork plate 32 is arranged on the right side of the first plate body 11.

[0056] As Figures 2 to 6As shown, a first sliding groove 112 is formed in the mounting base 10, and the unlocking stop post 321 penetrates through the first sliding groove 112 and is in sliding fit with the first sliding groove 112. Among them, the part of the unlocking stop post 321 located on the front side of the mounting base 10 can abut against the outer peripheral surface of the locking hook dial 20, and the part of the unlocking stop post 321 located on the rear side of the mounting base 10 is inserted and fitted with the telescopic rod 311. That is to say, the unlocking stop post 321 can move along the first sliding groove 112, and a first position and a second position corresponding to the locking position and the releasing position of the locking hook dial 20 are formed respectively. When the unlocking stop post 321 is located at the first position, the unlocking stop post 321 abuts against the outer peripheral surface of the locking hook dial 20, preventing the locking hook dial 20 in the locking position from rotating. When the unlocking stop post 321 is located at the second position, the unlocking stop post 321 releases the locking of the locking hook dial 20 in the locking position, so that the locking hook dial 20 can be driven by the sliding door lock pin 200 to rotate and switch to the releasing position. In this way, the sagging of the locking hook dial 20 when the sliding door lock pin 200 is unlocked on the sliding door can be restricted, and the external force of the sliding door can be prevented from being dialed under abnormal conditions when the sliding door is in the locked state. Moreover, the first sliding groove 112 on the mounting base 10 can limit the movement track of the unlocking stop post 321 to prevent the telescopic rod 311 on the telescopic driving member 31 from moving beyond the stroke.

[0057] As Figure 5 shown, a guiding opening 22 is formed in the locking hook dial 20, and the guiding opening 22 is communicated with the locking opening 21. Moreover, the guiding opening 22 is used to guide the sliding door lock pin 200 to be inserted into the locking opening 21, so that the sliding door lock pin 200 can pass through the guiding opening 22 and enter the locking opening 21 during the movement following the sliding door, and then push the locking hook dial 20 to rotate on the mounting base 10. In this way, it is convenient for the sliding door lock pin 200 to be inserted into the locking opening 21 of the locking hook dial 20. On the basis of locking the sliding door lock pin 200, the manufacturing precision and assembly precision of the safety door lock 100 can be reduced, which is convenient for the processing, production, assembly and application of the safety door lock 100. Here, a stop post 111 is fixedly connected to the mounting base 10. When the locking hook dial 20 rotates on the mounting base 10 under the pushing of the sliding door lock pin 200 until the locking hook dial 20 abuts against the stop post 111, and then the unlocking stop post 321 is used to limit the rotation of the locking hook dial 20 and realize the locking of the sliding door lock pin 200 by the locking hook dial 20.

[0058] As Figures 2 to 5As shown in the figure, the outer peripheral surface of the locking hook dial 20 has a locking surface 23, an unlocking avoidance surface 24, and a convex arc surface 26. The convex arc surface 26 is used for transition between the locking surface 23 and the unlocking avoidance surface 24. Among them, the locking surface 23 is arranged to match the outer peripheral wall of the unlocking stop 321, and the unlocking stop 321 can abut against the locking surface 23 to limit the locking hook dial 20 to the locked position, so that the locking hook dial 20 locks and engages the sliding door lock pin 200 that has been inserted into the lock opening 21. When the unlocking of the locking hook dial 20 by the unlocking stop 321 is released, the locking hook dial 20 can abut against the unlocking stop 321 through the unlocking avoidance surface 24 to limit the locking hook dial 20 to the release position, so that the lock opening 21 is available for the sliding door lock pin 200 to be inserted. In this way, on the one hand, the unlocking stop 321 can improve the stability of the control when the unlocking stop 321 locks the locking hook dial 20, and on the other hand, it can also limit the rotation of the locking hook dial 20 when unlocking, creating conditions for the subsequent insertion of the sliding door lock pin 200 into the locking hook dial 20. Here, the locking surface 23 is set as an arc surface that matches the outer peripheral wall of the unlocking stop 321, which can improve the stability of the unlocking stop 321 locking the locking hook dial 20 on the mounting base 10. Among them, along the depth direction of the lock opening 21, the locking surface 23, the unlocking avoidance surface 24, and the convex arc surface 26 are all arranged at positions below the guiding opening 22.

[0059] As Figure 3 , Figure 5 and Figure 6 shown, the safety door lock 100 further includes an elastic member 201. The elastic member 201 abuts against the locking hook dial 20 in a pre-deformed manner to drive the locking hook dial 20 to rotate and reset on the mounting base 10. That is to say, when the unlocking stop 321 releases the rotational limit of the locking hook dial 20 on the mounting base 10, the locking hook dial 20 can rotate on the mounting base 10 under the pushing of the elastic member 201 and realize the automatic unlocking of the locking hook dial 20 for the sliding door lock pin 200. That is, the safety door lock 100 can start to quickly reset the locking hook dial 20 when the sliding door is opened, so as to ensure the smooth reset of the telescopic rod 311 on the telescopic driving member 31 and ensure the smooth progress of the sliding door opening process. Here, the elastic member 201 is configured as a torsion spring. One elastic arm of the torsion spring abuts against the stop post 111, and the other elastic arm of the torsion spring passes through the through hole 25 on the locking hook dial 20. It can be understood that in other embodiments, the elastic member 201 can also be configured as a disc spring, etc., which will not be elaborated here.

[0060] In the present application, the telescopic driving member 31 of the present application is specifically an electromagnet. It can be understood that in other embodiments, the telescopic driving member 31 can also be configured as a push rod motor, etc.

[0061] As Figure 1 , Figure 6As shown, the telescopic rod 311 is inserted and matched with the fork plate 32, so that the fork plate 32 can be integrated on the telescopic rod 311 in the thickness direction of the locking hook dial 20, without occupying space, which can further reduce the overall volume of the safety door lock 100. Here, the fork plate 32 penetrates through the telescopic rod 311, and the insertion fit between the fork plate 32 and the telescopic rod 311 is realized.

[0062] As Figure 1 , Figure 2 , Figure 4 and Figure 6 shown, the middle part of the fork plate 32 is connected to the mounting seat 10 in a hinged manner. The unlocking stop column 321 penetrates through the lower end of the fork plate 32, and an unlocking lever 322 is arranged at the upper end of the fork plate 32; correspondingly, a U-shaped groove 114 is formed in the mounting seat 10, and the unlocking lever 322 passes through the U-shaped groove 114 and extends outwards for manual driving. Moreover, the fork plate 32 can drive the unlocking stop column 321 to move under the driving of the unlocking lever 322. That is to say, the unlocking lever 322 can be used for manual unlocking to meet the use requirements of the semi-high safety door of rail transit.

[0063] As Figure 1 , Figure 6 shown, a plurality of sliding guide parts 411 are arranged on the stroke push plate 41, and the stroke push plate 41 can be slidably connected to the mounting seat 10 through the plurality of sliding guide parts 411, and the sliding connection of the stroke push plate 41 on the mounting seat 10 is realized; among them, the stroke push plate 41 is inserted and matched with the telescopic rod 311 and limited by the unlocking stop column 321. The stroke push plate 41 can be guided by sliding on the mounting seat 10 through the plurality of sliding guide parts 411, so that the stroke range of the telescopic rod 311 during the operation of the telescopic driving part 31 can be effectively limited, making the triggering position of the position sensor 42 by the stroke push plate 41 more accurate; moreover, the stroke push plate 41 is arranged in an inserted and matched manner with the telescopic rod 311, so that the assembly of the stroke push plate 41 does not need to occupy space in its thickness direction, which has the effect of further reducing the volume required for the assembly of the safety door lock 100. Here, the sliding guide part 411 is configured as a second chute 4111. Correspondingly, a guide rod 113 inserted and matched with the second chute 4111 is assembled on the mounting seat 10, and the guide rod 113 can be slidably matched with the second chute 4111 through a bearing 1131. In this way, by using the structural characteristics of the bearing 1131, the frictional resistance received by the stroke push plate 41 when sliding on the mounting seat 10 can be reduced. It can be understood that in other embodiments, the sliding guide part 411 can also be configured as a guide rod. It should be noted that the number of the sliding guide parts 411 is two, and the two sliding guide parts 411 are arranged at intervals in sequence along the sliding direction of the stroke push plate 41. It can be understood that in other embodiments, the number of the sliding guide parts 411 can also be configured as three, four, or even more, which will not be elaborated here.

[0064] As Figure 6 shown, the stroke push plate 41 includes a stroke push plate body 401, the stroke push plate body 401 extends along the horizontal direction of the mounting seat 10, and one side of the stroke push plate body 401 extends vertically downward to form an extension portion 402, and the extension portion 402 can be inserted and matched with the opening groove 3111 on the telescopic rod 311. Here, the fork plate 32 is located outside the telescopic rod 311, and the unlocking stop post 321 sequentially passes through the telescopic rod 311, the extension portion 402 and the fork plate 32. Here, a space is formed between the stroke push plate body 401 and the extension portion 402, and the telescopic driving member 31 is disposed in this space, so that the overall structure of the safety door lock 100 can be made compact. It should be noted that the outer side wall of the end portion of the telescopic rod 311 where the opening groove 3111 is formed is a planar structure, and the lower end of the fork plate 32 is attached to this end portion; and, one end of the unlocking stop post 321 passing through the telescopic rod 311 can be locked with the telescopic rod 311 by a nut 3211 to prevent the unlocking stop post 321 from coming out of the telescopic rod 311.

[0065] As Figure 1 、 Figure 6 shown, the number of the position sensors 42 is configured to be multiple, and the multiple position sensors 42 can be triggered by the stroke push plate 41 simultaneously. The safety door lock 100 performs a redundant design on the signal trigger when unlocking the sliding door lock pin 200, so that the accuracy of the signal feedback when the safety door lock 100 is unlocked can be ensured. Here, the number of the position sensors 42 is two, and specifically, the position sensors 42 can be configured as micro switches, travel switches, etc.

[0066] As shown in the figure, each position sensor 42 includes a trigger roller 421, and a push slope 412 corresponding to the trigger roller 421 is formed on the stroke push plate 41. The trigger roller 421 can be rollingly abutted against the corresponding push slope 412, and the push slope 412 can push the trigger roller 421 under the drive of the stroke push plate 41 to trigger the position sensor 42. When the stroke push plate 41 slides on the mounting seat 10, by using the structural characteristics of the push slope 412, the trigger roller 421 can be pushed by the push slope 412 to achieve the purpose of triggering the position sensor 42.

[0067] It should be noted that multiple position sensors 42 are arranged horizontally. A receiving groove 413 is formed in the upper end face of the stroke push plate 41 facing the position sensor 42. The receiving groove 413 cooperates with the trigger roller 421 on the corresponding position sensor 42. The abutting inclined surface 412 is arranged on the groove wall of the receiving groove 413. The depths of the multiple receiving grooves 413 match the installation positions of the corresponding position sensors 42, which is used to reasonably layout the installation of the multiple position sensors 42 and save the installation space.

[0068] In summary, the safety door lock 100 of the present application has high control accuracy, long service life, and smooth unlocking / locking process; and under the premise of meeting the industry safety requirements, the characteristics of each component are fully utilized in the design, so that the structure is reasonably arranged, making the use of the door lock simpler, more reliable, and reducing the processing cost and installation requirements.

[0069] In addition, the present application also provides a semi-high safety door for rail transit, including the safety door lock 100 described above.

[0070] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0071] Those of ordinary skill in the art of the present technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as appropriate changes and variations are made to the above embodiments within the spirit of the present invention, they fall within the scope of protection required by the present invention.

Claims

1. A safety door lock, characterized in that: The safety door lock (100) comprises: Mounting seat (10); A lock hook dial (20) is rotatably mounted on the mounting seat (10), the lock hook dial (20) having a lock opening (21), the lock opening (21) being capable of receiving a sliding door lock pin (200), the lock hook dial (20) having a locking position for restricting the sliding door lock pin (200) in the lock opening (21), and a releasing position for releasing the sliding door lock pin (200); An unlocking assembly (30) is mounted on the mounting seat (10), the unlocking assembly (30) comprising a telescopic driving member (31) and a shift fork plate (32), the shift fork plate (32) being rotatably connected to the mounting seat (10), wherein an unlocking stop column (321) is provided at one end of the shift fork plate (32), the unlocking stop column (321) being transmission-connected to a telescopic rod (311) on the telescopic driving member (31), the unlocking stop column (321) being capable of synchronously moving with the telescopic rod (311) along a moving direction of the telescopic rod (311), so that the lock hook dial (20) can be switched between the locking position and the releasing position under the control of the unlocking stop column (321); A signal component (40) is mounted on the mounting seat (10), the signal component (40) comprising a travel push plate (41) and a position sensor (42), the travel push plate (41) is slidably connected to the mounting seat (10) and is transmission-connected to the unlocking stop column (321), and the travel push plate (41) can trigger the position sensor (42) under the drive of the unlocking stop column (321), so that the position sensor (42) generates a feedback signal; Along the extension direction of the unlocking stop column (321), the unlocking stop column (321) is arranged to penetrate the travel push plate (41) and the telescopic rod (311).

2. The safety door lock according to claim 1, characterized in that: The mounting seat (10) is provided with a first slide groove (112), the unlocking blocking column (321) is arranged to pass through the first slide groove (112) and is slidably matched with the first slide groove (112), and the first slide groove (112) extends along the movement direction of the telescopic driving member (31); The portion of the unlocking stop column (321) located on the back side (101) of the mounting seat (10) can abut against the outer peripheral surface of the lock hook dial (20), and the portion of the unlocking stop column (321) located on the front side (102) of the mounting seat (10) is plugged into and matched with the telescopic rod (311).

3. The safety door lock according to claim 1, characterized in that: The mounting seat (10) comprises a first plate body (11) and a second plate body (12) which are vertically connected, the second plate body (12) extending toward the front side (102) of the first plate body (11), and the safety door lock (100) can be assembled into a rail transit half-height safety door through the second plate body (12); The lock hook dial (20) is assembled to the back side (101) of the first plate body (11), and the unlocking component (30) and the signal component (40) are both assembled to the front side (102) of the first plate body (11); The position sensor (42) is arranged in the upper area on the left side of the first plate body (11), the telescopic drive member (31) is arranged in the lower area on the left side of the first plate body (11), the travel push plate (41) is arranged between the position sensor (42) and the telescopic drive member (31), and the fork plate (32) is arranged on the right side of the first plate body (11).

4. The safety door lock according to claim 1, characterized in that: The outer peripheral surface of the lock hook dial (20) comprises a locking surface (23), an unlocking avoidance surface (24) and a convex arc surface (26), and the locking surface (23) and the unlocking avoidance surface (24) are transitioned through the convex arc surface (26); The locking surface (23) is matched with the outer peripheral wall of the unlocking stop column (321), and the unlocking stop column (321) can abut against the locking surface (23) to limit the lock hook dial (20) to a locking position, so that the lock hook dial (20) is locked and inserted into the sliding door lock pin (200) in the lock port (21); When the unlocking stop column (321) releases the lock hook dial (20), the lock hook dial (20) can be pressed against the unlocking stop column (321) through the unlocking avoidance surface (24), so as to limit the lock hook dial (20) to a release position, so that the lock port (21) can be inserted into the sliding door lock pin (200).

5. The safety door lock according to claim 4, characterized in that: The safety door lock (100) further comprises an elastic member (201), wherein the elastic member (201) abuts against the lock hook dial (20) in a pre-deformed manner, and is used to drive the lock hook dial (20) to reset and rotate on the mounting seat (10).

6. The safety door lock according to claim 4, characterized in that: The lock hook dial (20) is provided with a guide opening (22), the guide opening (22) is communicated with the lock opening (21), and the guide opening (22) is used to guide the sliding door lock pin (200) to be inserted into the lock opening (21); Along the depth direction of the locking opening (21), the locking surface (23), the unlocking avoidance surface (24) and the convex arc surface (26) are all arranged below the guide opening (22).

7. The safety door lock according to claim 1, characterized in that: The travel push plate (41) is provided with a plurality of sliding guide parts (411), and the travel push plate (41) can be slidably connected to the mounting seat (10) through the plurality of sliding guide parts (411); The travel push plate (41) comprises a travel push plate body (401), the travel push plate body (401) is extended along the horizontal direction of the mounting seat (10), and one side of the travel push plate body (401) extends vertically downward and forms an extension portion (402), and the extension portion (402) can be plugged into and matched with the open groove (3111) on the telescopic rod (311); The fork plate (32) is located on the outer side of the telescopic rod (311), and the unlocking blocking column (321) is sequentially arranged to penetrate the telescopic rod (311), the extending portion (402) and the fork plate (32).

8. The safety door lock according to claim 7, characterized in that: The number of the position sensors (42) is configured to be multiple, and the multiple position sensors (42) can be triggered by the travel push plate (41) at the same time; Each of the position sensors (42) includes a trigger roller (421), and a push inclined surface (412) corresponding to the trigger roller (421) is formed on the travel push plate (41), and the trigger roller (421) can be rolled against the corresponding push inclined surface (412), and the push inclined surface (412) can push the trigger roller (421) under the drive of the travel push plate (41) to trigger the position sensor (42).

9. The safety door lock according to claim 1, characterized in that: The middle part of the fork plate (32) is connected to the mounting seat (10) in a hinged manner, the unlocking blocking column (321) is arranged through the lower end of the fork plate (32), and the upper end of the fork plate (32) is provided with an unlocking lever (322); The mounting seat (10) is provided with a U-shaped groove (114), the unlocking lever (322) passes through the U-shaped groove (114) and extends outwards so as to be manually driven, and the fork plate (32) can drive the unlocking blocking column (321) to move under the driving of the unlocking lever (322).

10. A rail transit half-height safety door, characterized in that: The invention comprises a safety door lock (100) as claimed in any one of claims 1 to 9.

Images