CN217080015U - Half-height type lock for platform door - Google Patents

Abstract

The utility model discloses a half high formula platform door tool to lock, include: the locking hook and the cam can synchronously rotate between a first position and a second position relative to the fixed substrate along with the opening and closing of the platform door, the signal switch is arranged on one side of the fixed substrate and located on one side of the cam, and when the cam rotates to leave the first position, the cam triggers the signal switch. The utility model discloses a cam triggers signal switch, can avoid signal switch to appear the spurious triggering because factor influences such as vibrations in the tool to lock working process effectively for tool to lock work becomes more reliable and more stable.

Description

Half-height type lock for platform door

Technical Field

The utility model relates to a platform door tool to lock technical field especially relates to a half high formula platform door tool to lock.

Background

The lockset is a core part of a sliding door of a half-height platform and needs to be provided with a locking mechanism, an automatic unlocking mechanism and a manual unlocking mechanism. The locking mechanism is used for automatically locking when the sliding door is closed so as to prevent passengers from opening, the automatic unlocking mechanism is used for automatically unlocking the locking mechanism when the DCU sends an instruction, and the manual unlocking mechanism is used for manually unlocking the locking mechanism when the system is in failure.

The traditional half-height platform door lock is generally locked by a lock shaft telescopic structure or a lock hook rotating structure, the telescopic structure is easy to cause lock shaft clamping or even unable movement due to shaft sleeve dust accumulation or ice formation of snow melt water on the lock shaft sleeve in cold snowing weather, and the problem of low reliability exists; the latter latch hook rotating structure generally uses a trigger plate structure to trigger a signal switch of the lock, and the trigger plate can slightly shake, so that false triggering is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a half high formula platform door tool to lock, its technical problem that can solve that half high formula platform door tool to lock among the prior art exists the reliability low, easy spurious triggering.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a half-height platform door lock, comprising: the locking mechanism comprises a fixed base plate, a locking hook, a cam and a signal switch, wherein the locking hook and the cam are rotatably arranged on the fixed base plate and are respectively positioned at two sides of the fixed base plate, the locking hook and the cam can synchronously rotate between a first position and a second position relative to the fixed base plate along with the opening and closing of a platform door, one side of the fixed base plate where the cam is positioned is also provided with a locking part and an unlocking component, the unlocking component is used for driving the locking part to reciprocate on the fixed base plate so as to be close to or far away from the cam, the cam is provided with a first concave position and a second concave position, when the locking hook and the cam are positioned at the first position, the locking part can be clamped in the first concave position so as to enable the cam and the locking hook to be incapable of rotating, and when the locking hook and the cam rotate to the second position, the locking part is clamped in the second concave position, the signal switch is arranged on one side of the cam, and when the cam rotates to leave the first position, the cam triggers the signal switch.

Preferably, a rotating shaft is arranged on the fixed substrate, and the locking hook and the cam are respectively arranged at two ends of the rotating shaft.

Preferably, the rotating shaft is further provided with a dustproof shaft sleeve, and the dustproof shaft sleeve is located between the fixed base plate and the lock hook.

Preferably, a sliding plate is further arranged on the fixed base plate, the locking part is arranged on the sliding plate, and the sliding plate is connected with the unlocking component.

Preferably, the fixed base plate is further provided with a first guide post and a plurality of second guide posts, the sliding plate is provided with a guide groove matched with the first guide post, and the plurality of second guide posts are respectively arranged on two sides of the sliding plate and are respectively abutted against the sliding plate.

Preferably, the unlocking assembly is an electromagnet.

Preferably, a manual unlocking mechanism is further arranged on the fixed base plate.

Preferably, manual release mechanism includes unlocking lever, unblock piece, manual unblock signal switch and spring, unlocking lever slip cartridge in on the fixed baseplate, unlocking lever one end is stretched out the fixed baseplate just is connected with the pressure cap outward, the unblock piece set up in the unlocking lever other end just is located the sliding plate place fixed baseplate one side, manual unblock signal switch sets up in unblock piece one side, it is used for promoting to have on the unblock piece the first inclined plane of sliding plate with be used for triggering manual unblock signal switch's second inclined plane, the spring housing is located on the unlocking lever.

Preferably, the signal switch comprises a door closing signal switch and a safety circuit signal switch.

Preferably, the device further comprises a housing, wherein the housing comprises a first housing and a second housing, and the first housing and the second housing are matched to form a closed installation space.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a set up the cam on fixed baseplate, its signal switch of tool to lock during operation triggers through the cam, because the cam is comparatively steady when rotating, therefore the cam can trigger signal switch reliably and steadily, and this can avoid signal switch to appear the spurious triggering because factors such as vibrations influence in the tool to lock working process effectively for tool to lock work becomes more reliable and more stable.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a side view of a half-height platform door latch according to an embodiment of the present invention (latch hook and cam in a second position);

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is another side view of the half-height platform door latch according to the embodiment of the present invention (latch hook and cam in the second position);

fig. 4 is a side view of a half-height platform door latch according to an embodiment of the present invention (latch hook and cam in a first position);

fig. 5 is another side view of the half-height platform door latch according to the embodiment of the present invention (latch hook and cam in the first position);

fig. 6 is a partial sectional view of a half-height platform door lock according to an embodiment of the present invention;

fig. 7 is a schematic view of the overall structure of a cam of the half-height platform door lock according to the embodiment of the present invention;

fig. 8 is a schematic view of the overall structure of the half-height platform door lock according to the embodiment of the present invention;

fig. 9 is a side view of the overall structure of the half-height platform door lock according to the embodiment of the present invention.

Fig. 10 is a schematic diagram illustrating a state comparison of the manual unlocking process according to the embodiment of the present invention.

In the figure:

1. fixing the substrate; 11. a locking portion; 12. an unlocking assembly; 13. a push rod assembly; 131. a mounting frame; 132. a top rod; 133. a return spring; 14. a rotating shaft; 141. a dustproof shaft sleeve; 15. a sliding plate; 151. a guide groove; 16. a first guide post; 17. a second guide post; 2. a latch hook; 3. a cam; 31. a first concave position; 32. a second concave position; 4. a signal switch; 41. a door closing signal switch; 42. a safety loop signal switch; 5. a manual unlocking mechanism; 51. an unlocking lever; 511. pressing the cap; 52. unlocking the block; 521. a first inclined plane; 53. a manual unlocking signal switch; 54. a spring; 6. a housing; 61. a first housing; 62. a second housing; 7. and (4) locking pins.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the embodiments of the present invention are further described in detail below, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-10, the present embodiment provides a half-height platform door lock, including: the platform door locking device comprises a fixed base plate 1, a locking hook 2, a cam 3 and a signal switch 4, wherein the locking hook 2 and the cam 3 are rotatably arranged on the fixed base plate 1 and are respectively positioned at two sides of the fixed base plate 1, the locking hook 2 and the cam 3 can synchronously rotate between a first position and a second position relative to the fixed base plate 1 along with the opening and closing of a platform door, one side of the fixed base plate 1 where the cam 3 is positioned is also provided with a locking part 11 and an unlocking component 12, the unlocking component 12 is used for driving the locking part 11 to reciprocate on the fixed base plate 1 to be close to or far away from the cam 3, the cam 3 is provided with a first concave position 31 and a second concave position 32, when the locking hook 2 and the cam 3 are positioned at the first position, the locking part 11 can be clamped in the first concave position 31 to enable the cam 3 and the locking hook 2 to be incapable of rotating, when the locking hook 2 and the cam 3 rotate to the second position, the locking part 11 is clamped in the second concave position 32, the signal switch 4 is arranged at one side of the cam 3, when the cam 3 is rotated away from the first position, the cam 3 triggers the signal switch 4.

It should be noted that, when the latch hook 2 and the cam 3 of the present embodiment are located at the first position and the locking portion 11 is engaged in the first concave portion 31, the lock is in the locking state, and when the latch hook 2 and the cam 3 rotate to the second position and the locking portion 11 is engaged in the second concave portion 32, the lock is unlocked in place.

As shown in fig. 2, the portable electronic device further includes a push rod assembly 13, the push rod assembly 13 includes a mounting frame 131, a push rod 132 and a return spring 133, the mounting frame 131 is fixedly mounted on the fixing substrate 1, the push rod 132 is slidably inserted into the mounting frame 131, the return spring 133 is sleeved on the push rod 132, one end of the return spring 133 abuts against the push rod 132, and the other end of the return spring 133 abuts against the mounting frame 131. When the locking hook 2 and the cam 3 rotate to the second position, the ejector rod 132 abuts under the cam 3 under the action of the return spring 133 to support the cam 3, so that the locking hook 2 keeps the unlocking state.

This embodiment is through setting up cam 3 on fixed baseplate 1, and its signal switch 4 of tool to lock during operation triggers through cam 3, because cam 3 is comparatively steady when rotating, consequently cam 3 can trigger signal switch 4 reliable and stable, and this can avoid signal switch 4 to appear the spurious triggering because factor influences such as vibrations in the tool to lock working process effectively for tool to lock work becomes more reliable and more stable.

Specifically, a rotating shaft 14 is arranged on the fixed substrate 1, the locking hook 2 and the cam 3 are respectively arranged at two ends of the rotating shaft 14, and the locking hook 2 and the cam 3 synchronously rotate through the rotating shaft 14.

It is understood that in other embodiments, the locking hook 2 and the cam 3 can also achieve synchronous rotation through other transmission structures such as gears, and the present solution is not limited thereto.

Further, a dustproof shaft sleeve 141 is further disposed on the rotating shaft 14, and the dustproof shaft sleeve 141 is located between the fixed substrate 1 and the locking hook 2.

This embodiment is through setting up dustproof axle sleeve 141 on pivot 14 between fixed baseplate 1 and latch hook 2, dustproof axle sleeve 141 can prevent that the dust from getting into the gap between pivot 14 and fixed baseplate 1 to can prevent snow melt rivers from freezing to pivot 14 and influence pivot 14 and rotate in snow sky gas down, this can promote this embodiment thereby half high platform door tool to lock environment adaptability promotes the reliability.

As shown in fig. 1-6, in another embodiment of the present invention, a sliding plate 15 is further disposed on the fixed base plate 1, the locking portion 11 is disposed on the sliding plate 15, and the sliding plate 15 is connected to the unlocking component 12.

When the present embodiment is unlocked, the unlocking assembly 12 drives the sliding plate 15 to slide so that the locking portion 11 leaves the first concave 31, so that the locking hook 2 and the cam 3 can rotate to unlock;

when the locking of this embodiment, the unlocking assembly 12 drives the sliding plate 15 to slide so that the locking portion 11 is clamped in the first concave 31, thereby making the locking hook 2 and the cam 3 unable to rotate to lock the platform door.

Further, the fixed base plate 1 is further provided with a first guide post 16 and a plurality of second guide posts 17, the sliding plate 15 is provided with a guide groove 151 matched with the first guide post 16, and the plurality of second guide posts 17 are respectively arranged on two sides of the sliding plate 15 and respectively abutted against the sliding plate 15.

The first guide post 16 and the plurality of second guide posts 17 can guide the sliding plate 15 so that the sliding of the sliding plate 15 becomes more stable and smooth.

Preferably, the unlocking assembly 12 is an electromagnet. When the locking mechanism is unlocked, the electromagnet drives the sliding plate 15 to slide so that the locking part 11 leaves the first concave position 31, and therefore the locking hook 2 and the cam 3 can rotate to unlock; during this embodiment locking, the electro-magnet loses the electricity, and sliding plate 15 slides under its self gravity and electro-magnet reset spring's effect and makes locking portion 11 joint in first concave position 31 to make latch hook 2 and cam 3 unable rotation, carry out the locking to the platform door.

It should be noted that, in some other embodiments, other types of devices may be used as the unlocking assembly 12, for example, a motor and a lead screw may be used as the unlocking assembly 12, which is not limited in this embodiment.

Further, a manual unlocking mechanism 5 is further provided on the fixed substrate 1. When the system fails, the present embodiment can be unlocked by the manual unlocking mechanism 5.

Specifically, manual release mechanism 5 includes unlocking lever 51, unblock piece 52, manual unblock signal switch 53 and spring 54, unlocking lever 51 slides and inserts on fixed baseplate 1, unlocking lever 51 one end stretches out fixed baseplate 1 and outside and be connected with and press cap 511, unblock piece 52 sets up in unlocking lever 51 other end and is located fixed baseplate 1 one side at sliding plate 15 place, manual unblock signal switch 53 sets up in unblock piece 52 one side, it has the second inclined plane that is used for promoting the first inclined plane 521 of sliding plate 15 and is used for triggering manual unblock signal switch 53 to unblock the piece 52, spring 54 overlaps on unlocking lever 51.

Preferably, the signal switch 4 includes a door closing signal switch 41 and a safety circuit signal switch 42. The door closing signal switch 41 is used for feeding the current state of the lock back to a DCU (door control unit), and the safety loop signal switch 42 is used for feeding the current state of the lock back to the safety loop.

Further, the shell 6 is further included, and the shell 6 includes a first shell 61 and a second shell 62, and the first shell 61 and the second shell 62 cooperate to form a closed installation space. In the embodiment, each part is installed in the installation space formed by matching the first shell 61 and the second shell 62, so that each part of the lock can work in a dust-free environment for a long time, and the reliability of the lock can be further improved.

The working principle of the scheme is as follows:

as shown in fig. 1-3, in the unlocking process of this embodiment, the DCU (door control system) sends an unlocking instruction, the electromagnet is powered to perform an actuation motion, the sliding plate 15 is driven to slide, so that the locking portion 11 is disengaged from the first concave 31 of the cam 3, the platform door slides in the door opening direction, the latch hook 2 can be toggled by the latch pin 7 on the platform door, the latch hook 2 and the cam 3 can rotate from the first position to the second position under the toggle action of the latch hook 7, the cam 3 can trigger the rollers of the door closing signal switch 41 and the safety loop signal switch 42 in the rotation process of the latch hook 2 and the cam 3, the door closing signal switch 41 and the safety loop signal switch 42 respectively feed the lock in the unlocking state back to the DCU (door control system) and the safety loop, when the latch hook 2 and the cam 3 rotate to the second position, the locking portion 11 is clamped in the second concave 32 of the cam 3, and the lock is unlocked in place. Meanwhile, the push rod 132 abuts under the cam 3 under the action of the return spring 133 to support the cam 3, so that the latch hook 2 is kept in the unlocked state.

As shown in fig. 4-5, in the locking process of this embodiment, the platform door slides in the door closing direction, the lock pin 7 on the platform door is embedded in the lock hook 2 and toggles the lock hook 2 and the cam 3 to rotate from the second position to the first position in the process of sliding along with the door body, after the lock hook 2 and the cam 3 rotate back to the first position, the cam 3 releases the rollers of the door closing signal switch 41 and the safety loop signal switch 42, the door closing signal switch 41 and the safety loop signal switch 42 feed the lock in the locking state back to the DCU (door control system) and the safety loop, respectively, the electromagnet is de-energized, and the sliding plate 15 slides under the action of its own power and the electromagnet return spring to make the locking portion 11 be clamped in the first concave 31 of the cam 3, so that the lock hook 2 and the cam 3 cannot rotate, thereby completing the locking of the platform door.

As shown in fig. 10, when the system is out of order and needs to be manually unlocked, the unlocking rod 51 is manually pressed through the pressing cap 511, the unlocking rod 51 can push the unlocking block 52, in the process that the unlocking rod 51 pushes the unlocking block 52, the first inclined surface 521 of the unlocking block 52 can abut against the sliding plate 15, so that the sliding plate 15 is pushed to slide, the locking part 11 is separated from the first concave position 31 of the cam 3, meanwhile, the second inclined surface of the locking block can trigger the manual unlocking signal switch 53, the manual unlocking signal switch 53 feeds back the lock in a manual unlocking state to a DCU (door control system) and a safety loop signal, at the moment, the platform door can be manually pulled, and the manual unlocking is completed.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used merely for convenience in description and simplicity in operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may include only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention has been described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and is not to be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would also fall within the scope of the present invention.

Claims (10)

1. A half-height platform door lock, comprising: the platform door locking device comprises a fixed base plate (1), a locking hook (2), a cam (3) and a signal switch (4), wherein the locking hook (2) and the cam (3) are rotatably arranged on the fixed base plate (1) and are respectively positioned on two sides of the fixed base plate (1), the locking hook (2) and the cam (3) can synchronously rotate between a first position and a second position relative to the fixed base plate (1) along with the opening and closing of a platform door, a locking part (11) and an unlocking component (12) are further arranged on one side of the fixed base plate (1) where the cam (3) is positioned, the unlocking component (12) is used for driving the locking part (11) to reciprocate on the fixed base plate (1) so as to be close to or far away from the cam (3), a first concave position (31) and a second concave position (32) are arranged on the cam (3), and when the locking hook (2) and the cam (3) are positioned at the first position, locking portion (11) can joint in first concave position (31) so that cam (3) with latch hook (2) are unable to rotate, work as latch hook (2) with cam (3) rotate to the second position when, locking portion (11) joint in second concave position (32), signal switch (4) set up in cam (3) one side, cam (3) rotate and leave when the first position, cam (3) trigger signal switch (4).

2. The lock for a half-height platform door according to claim 1, wherein a rotating shaft (14) is disposed on the fixed base plate (1), and the latch hook (2) and the cam (3) are disposed at two ends of the rotating shaft (14), respectively.

3. The lock for a half-height platform door according to claim 2, wherein a dust bushing (141) is further disposed on the rotating shaft (14), and the dust bushing (141) is located between the fixing base plate (1) and the locking hook (2).

4. The lock according to claim 1, wherein a sliding plate (15) is further disposed on the fixed base plate (1), the locking portion (11) is disposed on the sliding plate (15), and the sliding plate (15) is connected to the unlocking assembly (12).

5. The lock for a half-height platform door according to claim 4, wherein the fixed base plate (1) is further provided with a first guide post (16) and a plurality of second guide posts (17), the sliding plate (15) is provided with a guide groove (151) matched with the first guide post (16), and the plurality of second guide posts (17) are respectively arranged at two sides of the sliding plate (15) and respectively abut against the sliding plate (15).

6. The lock for a half-height platform door according to claim 4, wherein the unlocking member (12) is an electromagnet.

7. The lock for a half-height platform door according to claim 4, wherein a manual unlocking mechanism (5) is further provided on the fixed base plate (1).

8. Half-height platform door lock according to claim 7, wherein the manual unlocking mechanism (5) comprises an unlocking lever (51), an unlocking block (52), a manual unlocking signal switch (53) and a spring (54), the unlocking rod (51) is inserted on the fixed substrate (1) in a sliding manner, one end of the unlocking rod (51) extends out of the fixed substrate (1) and is connected with a pressing cap (511), the unlocking block (52) is arranged at the other end of the unlocking rod (51) and is positioned at one side of the fixed base plate (1) where the sliding plate (15) is positioned, the manual unlocking signal switch (53) is arranged on one side of the unlocking block (52), the unlocking block (52) is provided with a first inclined surface (521) used for pushing the sliding plate (15) and a second inclined surface used for triggering the manual unlocking signal switch (53), and the spring (54) is sleeved on the unlocking rod (51).

9. The lock for a mid-height platform door according to claim 1, wherein the signal switch (4) comprises a door closing signal switch (41) and a safety circuit signal switch (42).

10. A half-height platform door lock according to any one of claims 1 to 9, further comprising a housing (6), the housing (6) comprising a first housing (61) and a second housing (62), the first housing (61) and the second housing (62) cooperating to form a closed installation space.

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