Fastening device and operation method thereof

Abstract

The invention discloses a fastening device and an operation method thereof. A first door knife is arranged on a base through a first swing mechanism; the second door knife is arranged on the base through a second swing mechanism; the reset adjusting mechanism and the car door lock hook are also arranged on the base; the car door lock hook is provided with a vertical bar and a roller; the base can be arranged on a lift car; the first door knife is provided with an unlocking ejector rod; the second door knife is provided with an unlocking pull rod; the first door knife is kept in a set initial state through the first swing mechanism and the reset adjusting mechanism; in the initial state, the unlocking ejector rod keeps a set distance to face the pin rollers or makes contact with the pin rollers in a tangent mode. In the state that the car door is closed and the car door lock hook is connected with the lock hook seat, a set gap is kept between the first door knife and the second door knife or the first door knife and the second door knife directly abut against each other, and a first shifting distance is kept between the unlocking pull rod and the vertical bar; the first door vane and the second door vane can be located between two idler wheels of the landing door lock device. The landing door lock device can deal with the situation that two rollers of the landing door lock device are arranged in a small fastening size, and normal door opening for rescue outside a hall can be achieved.

Description

Technical Field

[0001] This invention belongs to the field of elevator technology, specifically relating to a coupling device and its operating method. Background Technology

[0002] The locking mechanism is a device located on the car door side. When the outward-opening locking mechanism works in conjunction with the landing door lock mechanism to open and close the door, the two door blades of the outward-opening locking mechanism are located between the two rollers of the landing door lock mechanism. Under normal operating conditions, the car door drives the landing door to open, and the relative distance between the two door blades of the outward-opening locking mechanism increases (hence the name "outward-opening"). However, in emergency rescue situations, the landing door drives the car door to open, and the relative distance between the two door blades decreases. Therefore, if the distance between the two rollers of the landing door lock mechanism is set very small due to its structural design (i.e., the locking dimension is set very small), the spacing between the two door blades will also be very small. This may prevent the two door blades of the outward-opening locking mechanism from retracting in emergency rescue situations, thus affecting emergency rescue operations. Traditional locking devices lack the reset and adjustment mechanism of this invention for limiting movement; instead, they rely on limiting bolts for fixation. This prevents the first door knife from swinging left during emergency rescue operations. Furthermore, when the distance between the first and second door knives is too close, the first door knife restricts the leftward swing of the second door knife, preventing the unlocking lever fixed to the second door knife from lifting the car door lock hook for unlocking. Consequently, emergency rescue operations involving the landing door opening the car door are impossible. Currently, traditional locking devices cannot achieve normal door opening for rescue operations from outside the lobby when dealing with small-sized landing door locks, thus limiting their widespread application. There is currently a lack of a locking device suitable for small-sized doors to enable normal door opening for rescue operations from outside the lobby. There is also a lack of a novel locking device operation method to scientifically guide people in achieving rescue operations from outside the lobby.

[0003] Therefore, a new technology is needed to address the lack of a novel coupling device in the existing technology; a new technology is needed to address the lack of an operating method for a novel coupling device in the existing technology. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a novel locking device that can handle situations where the two rollers of the landing door lock device are set with a small locking size, enabling normal door opening for rescue operations outside the hall.

[0005] The present invention adopts the following technical solution:

[0006] A locking device includes a base, a first door knife, a first swing mechanism, a second door knife, a second swing mechanism, a reset adjustment mechanism, and a car door lock hook;

[0007] The first door knife is mounted on the base via the first swing mechanism;

[0008] The reset adjustment mechanism is directly or indirectly disposed on the base and located on the first side of the first door knife;

[0009] The second door knife is mounted on the base via the second swing mechanism;

[0010] The car door lock hook is rotatably mounted on the base and located on the second side of the first door knife. The car door lock hook is used to connect with a lock hook seat that is indirectly or directly mounted on the car body as needed. The car door lock hook has vertical bars and rollers.

[0011] The base can be mounted on the car;

[0012] The first door knife is equipped with an unlocking top rod; the second door knife is equipped with an unlocking pull rod;

[0013] The first door knife maintains a set initial state through the first swing mechanism and the reset adjustment mechanism; in the initial state, the unlocking top rod faces the roller or is in tangential contact with the roller at a set distance;

[0014] When the car door is closed and the car door lock hook and lock hook seat are connected, the first door knife and the second door knife maintain a set gap or directly abut against each other, and the unlocking lever maintains a set first tossing distance with the vertical bar;

[0015] When the locking device is engaged with the landing door lock device, the first door knife and the second door knife can be positioned between the two rollers of the landing door lock device.

[0016] Furthermore, the base is provided with a sliding groove; the second swing mechanism includes a first swing arm assembly; the first set position of the second door knife is connected to the base through the first swing arm assembly, and the first swing arm assembly has a limiting shaft, which is connected to the sliding groove.

[0017] Furthermore, a limiting block is provided at the second end of the slide groove; the limiting shaft can move along the slide groove, and after moving, it can abut against the limiting block.

[0018] Furthermore, the first swing mechanism includes at least one set of third swing arm assemblies; the set position of the first door knife is connected to the base through the third swing arm assemblies.

[0019] Furthermore, the first door knife is provided with a limiting bent plate; a first limiting component is provided at a set position on the base, and the first limiting component is located on the second side of the first door knife; after the first door knife swings to the second side, it can abut against the first limiting component through the limiting bent plate.

[0020] Furthermore, the reset adjustment mechanism includes a push rod, a spring, a front baffle, and a rear baffle; the front baffle and the rear baffle are disposed on the base and located on the first side of the first door knife, the front baffle and the rear baffle are set at a set distance, and both are provided with through holes; the push rod movably passes through the two through holes, and the rear section of the push rod is fitted with the spring, the spring is located between the rear baffle and the front baffle, one end of the spring is connected to the rear baffle, and the other end is connected to the push rod.

[0021] Furthermore, the spring is a compression spring, and the initial state of the compression spring is when the shoulder of the top rod abuts against the front baffle. The elastic coefficient of the compression spring is set to K, and the compression amount of the compression spring in the initial state is set to ΔL. The overall swing structure formed by the first swing mechanism, the first door knife, and its auxiliary components will swing downwards under its own weight. After swinging downwards, the first swing mechanism or the first door knife abuts against the top rod. Therefore, the first swing mechanism or the first door knife exerts pressure on the top rod, and this pressure is set to F. Then, the elastic coefficient, the compression amount, and the pressure satisfy the relationship: K×ΔL≥F.

[0022] Furthermore, the first door knife has a first flange; the second door knife has a second flange; the first flange and the second flange maintain a set gap or directly abut against each other.

[0023] Furthermore, the thickness of the first door blade is set to T1; the thickness of the second door blade is set to T2; the gap between the first door blade and the second door blade is set to T3; the two rollers of the door lock device are the first roller and the second roller, respectively; the first safety gap from the first roller to the first door blade is set to L1; the second safety gap from the second roller to the second door blade is set to L2; and the engagement size that the engagement device can handle is set to L0.

[0024] The engagement dimensions that the engagement device can handle satisfy the following relationship: L0=L1+T1+T2+T3+L2;

[0025] When T3 = 0, the first door knife and the second door knife are in contact, and the minimum engagement size that the engagement device can handle is: L0 = L1 + T1 + T2 + L2.

[0026] Another objective of this invention is to provide a method for operating a connection device to scientifically guide people in carrying out outdoor rescue.

[0027] A method for operating a coupling device, based on the coupling device, specifically includes the following steps:

[0028] S1. In emergency rescue situations, neither the car door nor the landing door is opened. At this time, a first safety gap is left between the first roller and the first door knife of the landing door locking device, and a second safety gap is left between the second roller and the second door knife; a first movable distance is left between the limiting shaft on the second door knife and the first end of the sliding groove on the base; and a first actuation distance is left between the unlocking lever and the vertical bar on the car door lock hook.

[0029] When the landing door is slightly opened a certain distance, the first and second rollers of the landing door locking device move a certain distance to the first side, while the car door and the locking device do not move. At this time, the second roller abuts against the second door knife, the second safety gap disappears, the first moving distance and the first toggle distance remain unchanged, and the first safety gap between the first roller and the first door knife increases to the third safety gap.

[0030] S2. The drive door opens further by a set distance. The first and second rollers of the door lock device move further to the first side by a certain distance. The second door knife is further resisted by the second roller and swings to the first side. At this time, since the first and second door knives are close to each other, the first door knife swings to the first side under the resistance of the second door knife and compresses the reset adjustment mechanism. Since the first roller, the first door knife, the second door knife, and the second roller move to the first side synchronously, the third safety gap between the first roller and the first door knife remains unchanged.

[0031] S3. Continue to drive the landing door. The second roller of the landing door lock device pushes the second door knife until the limiting shaft on the second door knife abuts against the first end of the sliding groove on the base. The second door knife and the first door knife swing to the first side and the first moving distance and the first tossing distance disappear. At this time, the unlocking lever forces the car door lock hook to lift through the vertical bar, and the car door lock hook unlocks the connection with the lock hook seat.

[0032] S4. At this point, the landing door drives the car door to be fully opened, enabling emergency rescue.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] The first door knife of the present invention is oscillatingly mounted on the base via a first oscillating mechanism, and the second door knife is oscillatingly mounted on the base via a second oscillating mechanism. Furthermore, the present invention provides a reset adjustment mechanism on a first side of the first door knife, which allows the first door knife to maintain a set "initial state" (see reference). Figure 3This allows the unlocking rod to maintain a set distance from or tangentially contact the roller, facilitating the first door knife to swing to the second side of the base under normal operating conditions. The unlocking rod then pushes the roller to lift the car door lock hook, thus unlocking the "car door lock hook and lock hook seat" under normal operating conditions.

[0035] The reset adjustment mechanism also plays a crucial role in emergency rescue and is a key component of the locking device of this invention, enabling it to address the issue of "small locking dimensions for the two rollers of the landing door lock device." Specifically, in reality, the two rollers of the landing door lock device require a "small locking dimension." Without the reset adjustment mechanism of this invention, the space for the second door knife to swing to the first side is insufficient, making it difficult for the unlocking lever to lift the car door lock hook and unlock, thus hindering emergency rescue. In emergency rescue situations, the landing door must open the car door. At this time, the two rollers of the landing door lock device will move horizontally to the first side. The second roller will then resist the second door knife and swing to the first side. The second door knife, in turn, will resist the first door knife and swing to the first side. This causes the first door knife to compress the reset adjustment mechanism, allowing the second door knife to fully operate. This enables the unlocking lever to lift the car door lock hook, unlocking the car door lock hook from the lock seat, thus facilitating emergency rescue.

[0036] The present invention provides a locking device that can handle situations where the two rollers of the landing door lock device are set with a small locking size, enabling normal door opening for rescue operations outside the hall.

[0037] The present invention discloses an operation method for a locking device, which is based on a novel locking device and defines the steps of gradually driving the landing door to unlock the car door lock hook. This method can scientifically guide people to use the landing door and the novel locking device to unlock the connection between the "car door lock hook and the lock hook seat" and realize rescue outside the hall. Attached Figure Description

[0038] The technology of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0039] Figure 1 This is a three-dimensional schematic diagram of the coupling device of the present invention from a first perspective;

[0040] Figure 2 This is a perspective view of the coupling device of the present invention from a second angle;

[0041] Figure 3 This is a front view of the connection between the car door lock hook and the lock hook seat of the locking device of the present invention (wherein, the lock hook seat and guide of the door opener frame are partially shown; the two rollers of the landing door lock device are partially shown) (wherein, the initial state of the first door knife can be represented; the first actuation distance can be represented; the first movement distance can be represented; the first safety gap can be represented; the second safety gap can be represented; the pressure F and the self-weight G can be represented).

[0042] Figure 4 yes Figure 3 A top view of the locking device (in which the two rollers of the door lock device are set with a small locking size can be shown; the first door knife and the second door knife are shown between the two rollers; the first safety clearance and the second safety clearance can be shown).

[0043] Figure 5 It is a three-dimensional structural diagram of the first and second blades (where represents the plate thickness of the first and second blades);

[0044] Figure 6 It is a diagram showing the positional relationship between the first roller, the first cutting tool, the second cutting tool, and the second roller (where T3 = 0 represents the gap between the first cutting tool and the second cutting tool).

[0045] Figure 7 express Figure 3 A schematic diagram showing the second roller just touching the second door knife (where represents the first moving distance and the first actuating distance remaining unchanged, the second safety gap disappearing, and the first safety gap increasing to the third safety gap);

[0046] Figure 8 express Figure 7 The diagram shows the second roller further abutting against the second door knife to lift the car door lock hook (wherein, can represent the disappearance of the first active distance and the first toggle distance, and the unchanged third safety gap);

[0047] Figure 9 yes Figure 8 A top view of the coupling device (where the third safety clearance can be shown);

[0048] Figure 10 yes Figure 8 A schematic diagram of the rear structure of the coupling device (where the connection relationship between the slide groove and the limiting shaft can be shown);

[0049] Figure 11 It is a three-dimensional schematic diagram of the engagement device after removing the second door knife, unlocking lever, lifting rod roller, second swing mechanism, and car door lock hook (which shows the arrangement relationship between the limiting bending plate and the first limiting component).

[0050] Figure 12 This is a partial schematic diagram of the resetting adjustment mechanism and the swing arm of the first swing mechanism abutting each other (also a schematic diagram of the first embodiment of the resetting adjustment mechanism);

[0051] Figure 13 This is a schematic diagram of the second embodiment of the reset adjustment mechanism (wherein, the second door knife, unlocking lever, lifting rod roller, second swing mechanism, and car door lock hook of the locking device are not shown).

[0052] Figure label:

[0053] 1-Connecting device; 11-Base; 12-First door knife; 121-First flange; 13-First swing mechanism; 14-Second door knife; 141-Second flange; 142-Lifting rod roller; 15-Second swing mechanism; 16-Reset adjustment mechanism; 17-Car door lock hook; 171-Vertical bar; 172-Roller; 173-Bearing hole; 174-Ball; 175-Connecting shaft; A-First side; B-Second side; 18-Limiting plate; 19-First limiting assembly; 191-Fixed seat; 192-First limiting component;

[0054] 21-Unlocking top rod; 22-Unlocking pull rod; C1-First actuation distance; 23-Slide groove; D1-First end; D2-Second end; C2-First movement distance; 24-First swing arm assembly; 25-Second swing arm assembly; 26-Third swing arm assembly; 27-Limit block; 28-Guide component; 281-Arc groove; 29-Lock hook seat;

[0055] 31-First hinge shaft; 32-Swing arm; 321-First bearing hole; 322-Second bearing hole; 323-Ball bearing; 33-Second hinge shaft; 34-Limiting shaft;

[0056] 41-Push rod; 411-Shoulder; 42-Spring; 43-Front baffle; 44-Rear baffle;

[0057] 51 - First magnet of the same polarity; 52 - Second magnet of the same polarity; E1 - Initial face-to-face spacing;

[0058] 6 - Two rollers; 61 - First roller; 62 - Second roller;

[0059] T1 - Plate thickness of the first gantry blade; T2 - Plate thickness of the second gantry blade; T3 - Gap between the first and second gantry blades;

[0060] L0 - Assembly dimension; L1 - First safety clearance; L2 - Second safety clearance; L3 - Third safety clearance;

[0061] F - Pressure; G - Weight (representing gravity). Detailed Implementation

[0062] The following will provide a clear and complete description of the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the accompanying drawings indicate the same or similar parts.

[0063] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "up," "down," "left," and "right" used in this invention are only relative to the relative positional relationships of the various components of the invention in the accompanying drawings.

[0064] Reference Figures 1 to 12 A locking device 1 includes a base 11, a first door knife 12, a first swing mechanism 13, a second door knife 14, a second swing mechanism 15, a reset adjustment mechanism 16, and a car door lock hook 17.

[0065] The first door knife 12 is swayably mounted on the base 11 via the first swing mechanism 13;

[0066] The reset adjustment mechanism 16 is directly or indirectly disposed on the base 11 and is located on the first side A of the first door knife 12;

[0067] The second door knife 14 is swayably mounted on the base 11 via the second swing mechanism 15;

[0068] The car door lock hook 17 is rotatably mounted on the base 11 and located on the second side B of the first door knife 12 and the second door knife 14. The car door lock hook 17 is used to connect with the lock hook seat 29, which is indirectly or directly mounted on the car body, as needed. The car door lock hook 17 has a vertical bar 171 and a roller 172.

[0069] The base 11 can be installed on the car (such as on the car door);

[0070] The first door knife 12 is equipped with an unlocking top rod 21; the second door knife 14 is equipped with an unlocking pull rod 22;

[0071] The first door knife 12 is maintained in a set initial state through the first swing mechanism 13 and the reset adjustment mechanism 16; in the initial state, the unlocking top rod 21 faces the roller 172 at a set distance or is in tangential contact with the roller 172.

[0072] When the car door is closed and the car door lock hook 17 and lock hook seat 29 are connected, the first door knife 12 and the second door knife 14 maintain a set gap or directly abut against each other, and the unlocking lever 22 maintains a set first tossing distance C1 with the vertical bar 171;

[0073] As the elevator car moves, when the engagement device 1 cooperates with the landing door lock device, the first door knife 12 and the second door knife 14 can be positioned between the two rollers 6 of the landing door lock device; wherein, the landing door lock device is a landing door side device.

[0074] Reference Figures 1 to 12 In one embodiment, the car door lock hook 17 has a bearing hole 173. The car door lock hook 17 is connected to the connecting shaft 175 on the base through the bearing hole 173, the ball bearing 174, and the connecting shaft 175. Under the action of external force, the car door lock hook 17 can rotate around the connecting shaft 175.

[0075] Reference Figures 1 to 12 In one embodiment, the lock hook seat 29 is fixed to the door operator frame, which is positioned at a specific location on the car. Thus, the lock hook seat 29 is "indirectly" mounted on the car. During the opening and closing of the car door, the lock hook seat 29 does not move. When the car door is closed, the car door lock hook 17 connects to the lock hook seat 29, thereby restricting both the "car door driving the landing door to open" and the "landing door driving the car door to open."

[0076] When the car door lock hook 17 is connected to the lock hook seat 29, under normal operating conditions, to open the door, the connection between the car door lock hook 17 and the lock hook seat 29 must first be unlocked. Under normal operating conditions, the first door knife 12 in its initial state swings towards the second side B under the action of external force, abutting the roller 172 and lifting the car door lock hook 17, thus unlocking the connection between the car door lock hook 17 and the lock hook seat 29, allowing the car door to smoothly drive the landing door to open. During normal operating conditions, before unlocking, the second door knife 14 loses the obstruction of the guide member 28 and, under its own weight, swings to the limiting block 27 at the second end D2 of the slide groove 23, without interfering with the first door knife 12 swinging towards the second side B.

[0077] When the car door lock hook 17 is connected to the lock hook seat 29, in an emergency rescue situation, to open the door, the connection between the car door lock hook 17 and the lock hook seat 29 must first be unlocked. In an emergency rescue situation, when the landing door is driven, the two rollers 6 of the landing door lock device on the landing door move horizontally to the first side A, abutting the second door knife 14, forcing the second door knife 14 to abut the first door knife 12 to compress and reset the adjustment mechanism 16. After the second door knife 14 has fully moved to the first side A, the unlocking lever 22 on the second door knife 14 lifts the car door lock hook 17, realizing the unlocking of the connection between the car door lock hook 17 and the lock hook seat 29, thereby allowing the landing door to smoothly drive the car door to open, realizing emergency rescue.

[0078] Reference Figures 1 to 12In one embodiment, when the car door is closed and the car door lock hook 17 and lock hook seat 29 are connected, the lifting rod roller 142 on the second door knife 14 is blocked by the guide member 18 on the door opener frame, and the second door knife 14 is stably positioned at a set position. At this set position, the unlocking pull rod 22 on the second door knife 14 and the vertical bar 171 of the car door lock hook maintain a set first actuation distance C1. Meanwhile, the first door knife 12, under its own weight, swings to contact the reset adjustment mechanism 16 (directly or indirectly) and is limited by the reset adjustment mechanism 16. At this time, the unlocking top rod 21 on the first door knife and the roller 172 of the car door lock hook maintain a set distance facing each other or the unlocking top rod 21 on the first door knife directly and tangentially contacts the outer edge of the roller 172. The guide member 28 has an arc-shaped groove 281 for timely blocking of the second door knife 14, and the guide member 28 is fixed on the door opener frame. The first door knife 12 contacts the reset adjustment mechanism 16 through the first swing mechanism 13, which is an "indirect" contact; the first door knife 12 contacts the reset adjustment mechanism 16 through itself, which is a "direct" contact.

[0079] Reference Figures 1 to 12 In one embodiment, the base 11 is provided with a sliding groove 23; the second swing mechanism 15 includes a first swing arm assembly 24; the first set position of the second door knife 14 is connected to the base 11 through the first swing arm assembly 24, and the first swing arm assembly 24 has a limiting shaft 34, which is connected to the sliding groove 23.

[0080] Reference Figures 1 to 12 In one embodiment, a limiting block 27 is provided on the second end D2 of the slide groove 23; the limiting shaft 34 can move along the slide groove 23, and after moving, it can abut against the limiting block 27.

[0081] Reference Figures 1 to 12 In one embodiment, the second swing mechanism 15 further includes a second swing arm assembly 25, and the second set position of the second door knife 14 is connected to the base 11 through the second swing arm assembly 25.

[0082] Reference Figures 1 to 12 In one embodiment, the first swing mechanism 13 includes at least one set of third swing arm assemblies 26; the set position of the first door knife 12 is connected to the base 11 through the third swing arm assemblies 26.

[0083] Reference Figures 1 to 12 In one embodiment, the first door knife 12 is connected to the base 11 via two sets of the third swing arm assemblies 26. Through the two sets of the third swing arms assemblies 26, the first door knife 12 is swingably mounted on the base 11.

[0084] Reference Figures 1 to 12 In one embodiment, each group of the third swing arm assembly 26 includes a first hinge shaft 31, a swing arm 32, and a second hinge shaft 33. The first hinge shaft 31 is disposed at a predetermined position on the base 11, the first end of the swing arm 32 is rotatably connected to the first hinge shaft 31, the second hinge shaft 33 is disposed at a predetermined position on the first door knife 12, and the second end of the swing arm 32 is connected to the second hinge shaft 33. Preferably, the first end of the swing arm 32 is provided with a first bearing hole 321, which is connected to the first hinge shaft 31 via a ball bearing 323; the second end of the swing arm 32 is provided with a second bearing hole 322, which is connected to the second hinge shaft 33 via a ball bearing 323.

[0085] Reference Figures 1 to 12 In one embodiment, the second swing arm assembly 25 and the third swing arm assembly 26 have the same structure. The second door knife 14 is swayably mounted on the base 11 via the second swing arm assembly 25. In this case, the first hinge axis of the second swing arm assembly 25 is set at a set position on the base 11, while the second hinge axis of the second swing arm assembly 25 is set at a set position on the second door knife 14. Finally, the swing arm of the second swing arm assembly 25 connects the first hinge axis and the second hinge axis.

[0086] Reference Figures 1 to 12 In one embodiment, the first swing arm assembly 24 and the second swing arm assembly 25 differ in their structural composition as follows: the "limiting shaft 34" of the first swing arm assembly and the "second hinge shaft" of the second swing arm assembly are different; the limiting shaft 34 of the first swing arm assembly is not only used for the connection between the swing arm and the second door knife 14, but the limiting shaft 34 can also move and abut in the slide groove 23 of the base 11, while the "second hinge shaft" of the second swing arm assembly 25 is only used for the connection between the swing arm and the second door knife 14.

[0087] Reference Figures 1 to 12 In one embodiment, the groove 23 is a curved groove.

[0088] Reference Figures 1 to 12 In one embodiment, the first door knife 12 is provided with a limiting bending plate 18; the base 11 is provided with a first limiting component 19 at a set position, and the first limiting component 19 is located on the second side B of the first door knife 12; after the first door knife 12 swings to the second side B under the action of external force, it can abut against the first limiting component 19 through the limiting bending plate 18.

[0089] Reference Figures 1 to 12 In one embodiment, if there are a plurality of limiting bends 18, then there are a plurality of corresponding groups of the first limiting components 19.

[0090] Reference Figures 1 to 12 In one embodiment, each set of the first limiting components 19 includes a fixed base 191 and a first limiting member 192. The fixed base 191 is disposed on the base 11 and located on the second side B of the first door knife 12, and the first limiting member 192 is disposed on the fixed base 191. After the first door knife 12 swings to the second side B under the action of external force, it abuts against the first limiting member 192 through the limiting bending plate 18, thus preventing the first door knife 12 from swinging excessively to the second side B, thereby achieving the purpose of limiting. After the first door knife 12 swings to the second side B under the action of external force, if the unlocking top rod 21 is sufficient to unlock the connection between the car door lock hook 17 and the lock hook seat 29, the limiting bending plate 18 and the first limiting components 19 can play a role in limiting protection.

[0091] In one embodiment, the reset adjustment mechanism 16 has several components. (See reference...) Figures 1 to 12 In this embodiment, two reset adjustment mechanisms 16 are provided. The two reset adjustment mechanisms 16 act on the two swing arms 32 of the first swing mechanism 13, or directly on the first door knife 12. The provision of two reset adjustment mechanisms 16 can make the movement of the first door knife 12 more stable. For the sake of structural simplification, only one reset adjustment mechanism 16 can be provided, acting on the swing arms 32 of the first swing mechanism 13 or on the first door knife 12.

[0092] Reference Figures 1 to 12 In one embodiment, the reset adjustment mechanism 16 includes a push rod 41, a spring 42, a front baffle 43, and a rear baffle 44. The front baffle 43 and the rear baffle 44 are disposed on the base 11 and located on the first side A of the first door knife 12. The front baffle 43 and the rear baffle 44 are set at a predetermined distance and each has a through hole. The push rod 41 movably passes through the two through holes, and the rear section of the push rod 41 is fitted with the spring 42. The spring 42 is located between the rear baffle 44 and the front baffle 43. One end of the spring 42 is connected to the rear baffle 44, and the other end is connected to the push rod 41. When the front end of the push rod 41 is subjected to an external force, it can be displaced backward by compressing the spring 42. When the external force is removed, the push rod 41 can be reset under the drive of the spring 42, that is, the shoulder 411 of the push rod 41 is restored to abutment against the front baffle 43.

[0093] Reference Figures 1 to 12 In one embodiment, the rear baffle 44 is part of the base 11, which is a baffle formed by bending the side of the base 11.

[0094] Reference Figures 1 to 12In one embodiment, the spring 42 is a compression spring. When the shoulder 411 of the push rod 41 abuts against the front baffle 43 (either just abutting or over-abutting), it is the initial state of the compression spring. This initial state helps the push rod 41 to reset after being abutted. The elastic coefficient of the compression spring is set to K, and the compression amount of the compression spring in the initial state is set to ΔL. The overall swing structure formed by the first swing mechanism 13, the first door knife 12, and their auxiliary components will swing downwards under its own weight G. After swinging downwards, it will be controlled by the first swing mechanism 13 or the first door knife 12. The blade 12 abuts against the top rod 41, thus the first swing mechanism 13 or the first door blade 12 exerts pressure on the top rod 41, and this pressure is set to F. The elastic coefficient, the compression amount, and the pressure satisfy the relationship: K × ΔL ≥ F. This design ensures that when the compression spring is in its "initial state," the shoulder 411 of the top rod 41 can abut against the front baffle 43 and overcome the pressure generated by the downward swing of the "integral swing structure," allowing the first door blade 12 to maintain its set "initial state" (see [link to initial state setting of the first door blade 12]). Figure 3 The auxiliary components of the first door knife 12 include an unlocking rod 21 and a limiting bend plate 18.

[0095] The value of “K×△L” is generally not less than F. If the spring force of the compression spring is less than F, it is easily compressed. Then, after the “integral swing structure” abuts against the top rod 41, it will still swing a little distance to the first side A, which will reduce the first safety gap L1 between the first door knife 12 and the first roller 61. When the car is running upward, the first door knife 12 and the first roller 61 are prone to collision, which will cause operational danger.

[0096] Of course, the value of "K×△L" should not be set too large. Otherwise, in emergency rescue situations, when the second door knife 14 abuts against the first door knife 12 and swings together toward the first side A, jamming will occur, making it difficult to achieve the emergency rescue function. Generally speaking, F≤K×△L<nF is more appropriate, where n is a coefficient, and n can take a value in the range of 2 to 5, such as n=2 or n=2.5.

[0097] Reference Figure 13In another embodiment, the reset adjustment mechanism 16 includes a first magnet of the same polarity 51 and a second magnet of the same polarity 52; the first magnet of the same polarity 51 is disposed at a set position on the base 11 and located on the first side A of the first door knife 12; the second magnet of the same polarity 52 is disposed at a set position on the first door knife 12 or the first swing mechanism 13, thereby the second magnet of the same polarity 52 is "indirectly" disposed on the base 11. The overall swing structure formed by the first swing mechanism 13, the first door knife 12, and their auxiliary components will swing downwards under its own weight G. After swinging downwards, the second like-pole magnet 52 will face the first like-pole magnet 51. Due to the "like poles repel" effect of magnets, the first door knife 12 can maintain the set "initial state" setting. At the same time, in emergency rescue situations, the reset adjustment mechanism 16 can also compress the "distance between the first like-pole magnet 51 and the second like-pole magnet 52" to give the second door knife 14 sufficient operating space, so that the unlocking lever 22 can push the car door lock hook 17 to lift and unlock in emergency rescue situations. The reset adjustment mechanism 16 in this embodiment is also beneficial for the coupling device 1 of the present invention to deal with the situation where "the two rollers 6 of the floor door lock device are set with a small coupling size L0". The "initial facing distance E1" and magnetic field strength between the first like-pole magnet 51 and the second like-pole magnet 52 can be set according to the actual situation.

[0098] Reference Figures 1 to 12 In one embodiment, the first door knife 12 has a first flange 121; the second door knife 14 has a second flange 141; when the car door is closed and the car door lock hook 17 and lock hook seat 29 are connected, the first flange 121 and the second flange 141 maintain a set gap or directly abut against each other.

[0099] Reference Figures 1 to 12 In one embodiment, the two rollers 6 of the landing door lock device are the first roller 61 and the second roller 62, respectively, and the landing door lock device belongs to the landing door side device; the first door knife 12 and the second door knife 14 are the interface components for "the car door system to the landing door system"; the first roller 61 and the second roller 62 are the interface components for "the landing door system to the car door system".

[0100] When the car door and landing door are closed, the first roller 61 is located to the left of the first flange 121, and the second roller 62 is located to the right of the second flange 141.

[0101] Reference Figures 1 to 12 In one embodiment, the left side of the first flange 121 is a mating surface that can cooperate with the first roller 61 of the landing door lock device; the right side of the second flange 141 is a mating surface that can cooperate with the second roller 62 of the landing door lock device.

[0102] Reference Figures 1 to 12 In one embodiment, the thickness of the first door blade is set to T1; the thickness of the second door blade is set to T2; the gap between the first door blade and the second door blade is set to T3; the two rollers of the door lock device are a first roller 61 and a second roller 62; the first safety gap from the first roller 61 to the first door blade 12 is set to L1; the second safety gap from the second roller 62 to the second door blade 14 is set to L2; and the engagement size that the engagement device 1 can handle is set to L0.

[0103] The engagement dimensions that the engagement device 1 can handle satisfy the following relationship: L0 = L1 + T1 + T2 + T3 + L2;

[0104] Since both the first safety gap L1 and the second safety gap L2 are safety values ​​(which cannot be made smaller), in practice, if the two rollers 6 of the landing door lock device need to be set with a "smaller engagement size", the only solution is to address the three influencing factors T1, T2, and T3 to achieve a "smaller engagement size". The engagement size refers to the distance between the two rollers 6 of the landing door lock device.

[0105] When T3 = 0, the first door knife 12 and the second door knife 14 are in contact, and the minimum engagement size that the engagement device 1 can handle is: L0 = L1 + T1 + T2 + L2.

[0106] Specifically, when T3 = 0, the right side of the first flange 121 and the left side of the second flange 141 are in contact. Preferably, the right side of the first flange 121 and the left side of the second flange 141 are both smooth surfaces.

[0107] Since the first flange 121 and the second flange 141 are set to a light-fitting state, which is the "minimum engagement size" that the engagement device 1 of the present invention can handle in this embodiment, in another embodiment, to meet the need for a "smaller engagement size", while ensuring that the structural strength of the first blade 12 and the second blade 14 meets the requirements, the plate thickness T1 of the first blade and the plate thickness T2 of the second blade can be further reduced. Preferably, in another embodiment, the first blade 12 and the second blade 14 are selected as high-strength alloy parts to further reduce the plate thickness T1 of the first blade and the plate thickness T2 of the second blade.

[0108] In one embodiment, when the first blade 12 and the second blade 14 are in direct contact (e.g., lightly touching each other), during the process of the second blade 14 pressing the first blade 12 to the left, the two flanges will rub against each other, resulting in increased movement resistance and wear on the contact surface. Therefore, this can be solved by providing rollers and their cooperating sliding surfaces on the blades. If a roller is provided on the right side of the first flange 121, then a sliding surface cooperating with the roller is provided on the left side of the second flange 141. If the roller is provided on the left side of the second flange 141, then a sliding surface cooperating with the roller is provided on the right side of the first flange 121.

[0109] Another objective of this invention is to provide a method for operating a connection device to scientifically guide people in carrying out outdoor rescue.

[0110] Reference Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 9 A method for operating a coupling device, based on the coupling device 1, specifically includes the following steps:

[0111] S1. In emergency rescue situations, neither the car door nor the landing door is open. In this case, refer to... Figure 3 and Figure 4 A first safety gap L1 is provided between the first roller 61 of the door lock device and the first flange 121 of the first door knife 12; a second safety gap L2 is provided between the second roller 62 and the second flange 141 of the second door knife 14; a first movable distance C2 is provided between the limiting shaft 34 on the second door knife 14 and the first end D1 of the sliding groove 23 on the base; and a first actuation distance C1 is provided between the unlocking rod 22 and the vertical bar 171 on the car door lock hook.

[0112] The landing door is slightly opened a short distance, and the first roller 61 and the second roller 62 of the landing door locking device move a short distance to the first side A, while the car door and the locking device 1 remain stationary. At this time, refer to... Figure 7 The second roller 62 abuts against the second door knife 14, the second safety gap L2 disappears, the first moving distance C2 and the first toggle distance C1 remain unchanged, while the first safety gap L1 between the first roller 61 and the first door knife 12 increases to the third safety gap L3.

[0113] S2. The drive door is opened further by a set distance. The first roller 61 and the second roller 62 of the door lock device move further to the first side A by a certain distance. The second door knife 14 is further resisted by the second roller 62 and swings to the first side A. At this time, since the first door knife 12 and the second door knife 14 are close to each other (this "close to each other" includes the initial phase gap setting or the initial phase contact setting), the first door knife 12 swings to the first side A under the resistance of the second door knife 14 and compresses the reset adjustment mechanism 16. Since the first roller 61, the first door knife 12, the second door knife 14 and the second roller 62 move to the first side A simultaneously, the third safety gap L3 between the first roller 61 and the first door knife 12 remains unchanged.

[0114] S3. Continue driving the floor door, refer to... Figure 8 and 9 The second roller 62 of the door lock device pushes the second door knife 14 until the limiting shaft 34 on the second door knife 14 abuts against the first end D1 of the sliding groove 23 on the base. The second door knife 14 and the first door knife 12 swing to the first side A and the first moving distance C2 and the first tossing distance C1 disappear. At this time, the unlocking lever 22 forces the car door lock hook 17 to lift through the vertical bar 171, and the car door lock hook 17 unlocks the connection with the lock hook seat 29.

[0115] S4. At this point, the landing door successfully drives the car door to be fully opened, enabling emergency rescue.

[0116] The operating method of the device of this invention can scientifically guide people to carry out rescue operations outside the building in an orderly manner.

[0117] In one embodiment, the first side A as defined in this invention is the left side, and the second side B is the right side.

[0118] The present invention relates to a locking device and its operating method, mainly concerning the protection of novel locking devices and operating methods. The car, car door, door opener frame, landing door, and landing door lock device can be referred to in the prior art, and will not be described in detail here.

[0119] Other aspects of the coupling device and its operation method described in this invention can be found in the prior art and will not be repeated here.

[0120] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A coupling device, characterized in that, It includes a base, a first door knife, a first swing mechanism, a second door knife, a second swing mechanism, a reset adjustment mechanism, and a car door lock hook; The first door knife is mounted on the base via the first swing mechanism; The reset adjustment mechanism is directly or indirectly disposed on the base and located on the first side of the first door knife; The second door knife is mounted on the base via the second swing mechanism; The car door lock hook is rotatably mounted on the base and located on the second side of the first door knife. The car door lock hook is used to connect with a lock hook seat that is indirectly or directly mounted on the car body as needed. The car door lock hook has vertical bars and rollers. The base can be mounted on the car; The first door knife is equipped with an unlocking top rod; the second door knife is equipped with an unlocking pull rod; The first door knife maintains a set initial state through the first swing mechanism and the reset adjustment mechanism; in the initial state, the unlocking top rod faces the roller or is in tangential contact with the roller at a set distance; When the car door is closed and the car door lock hook and lock hook seat are connected, the first door knife and the second door knife maintain a set gap or directly abut against each other, and the unlocking lever maintains a set first tossing distance with the vertical bar; When the locking device is engaged with the landing door lock device, the first door knife and the second door knife can be positioned between the two rollers of the landing door lock device.

2. The coupling device according to claim 1, characterized in that, The base is provided with a sliding groove; the second swing mechanism includes a first swing arm assembly; the first set position of the second door knife is connected to the base through the first swing arm assembly, and the first swing arm assembly has a limiting shaft, which is connected to the sliding groove.

3. The coupling device according to claim 2, characterized in that, A limiting block is provided at the second end of the slide groove; the limiting shaft can move along the slide groove, and after moving, it can abut against the limiting block.

4. The coupling device according to claim 1, characterized in that, The first swing mechanism includes at least one set of third swing arm assemblies; the set position of the first door knife is connected to the base through the third swing arm assemblies.

5. The coupling device according to claim 1, characterized in that, The first door knife is provided with a limiting bent plate; a first limiting component is provided at a set position on the base, and the first limiting component is located on the second side of the first door knife; after the first door knife swings to the second side, it can abut against the first limiting component through the limiting bent plate.

6. The coupling device according to claim 1, characterized in that, The reset adjustment mechanism includes a push rod, a spring, a front baffle, and a rear baffle. The front baffle and the rear baffle are mounted on the base and located on the first side of the first door knife. The front baffle and the rear baffle are set at a predetermined distance and each has a through hole. The push rod can movably pass through the two through holes, and the rear section of the push rod is fitted with the spring. The spring is located between the rear baffle and the front baffle. One end of the spring is connected to the rear baffle, and the other end is connected to the push rod.

7. The coupling device according to claim 6, characterized in that, The spring is a compression spring. When the shoulder of the top rod abuts against the front baffle, it is the initial state of the compression spring. The elastic coefficient of the compression spring is set to K, and the compression amount of the compression spring in the initial state is set to ΔL. The overall swing structure formed by the first swing mechanism, the first door knife and its auxiliary components will swing down under its own weight. After swinging down, the first swing mechanism or the first door knife abuts against the top rod. Therefore, the first swing mechanism or the first door knife exerts pressure on the top rod, and this pressure is set to F. Then the elastic coefficient, the compression amount and the pressure satisfy the relationship: K×ΔL≥F.

8. The coupling device according to claim 1, characterized in that, The first door knife has a first flange; the second door knife has a second flange; the first flange and the second flange maintain a set gap or are in direct contact.

9. The coupling device according to claim 1, characterized in that, The thickness of the first door blade is set to T1; the thickness of the second door blade is set to T2; the gap between the first door blade and the second door blade is set to T3; the two rollers of the door lock device are the first roller and the second roller, respectively; the first safety gap from the first roller to the first door blade is set to L1; the second safety gap from the second roller to the second door blade is set to L2; the engagement size that the engagement device can handle is set to L0; The engagement dimensions that the engagement device can handle satisfy the following relationship: L0=L1+T1+T2+T3+L2; When T3 = 0, the first door knife and the second door knife are in contact, and the minimum engagement size that the engagement device can handle is: L0 = L1 + T1 + T2 + L2.

10. A method of operating a coupling device, wherein the coupling device is based on any one of claims 1 to 9, characterized in that, Includes the following steps: S1. In emergency rescue situations, neither the car door nor the landing door is opened. At this time, a first safety gap is left between the first roller and the first door knife of the landing door locking device, and a second safety gap is left between the second roller and the second door knife; a first movable distance is left between the limiting shaft on the second door knife and the first end of the sliding groove on the base; and a first actuation distance is left between the unlocking lever and the vertical bar on the car door lock hook. When the landing door is slightly opened a certain distance, the first and second rollers of the landing door locking device move a certain distance to the first side, while the car door and the locking device do not move. At this time, the second roller abuts against the second door knife, the second safety gap disappears, the first moving distance and the first toggle distance remain unchanged, and the first safety gap between the first roller and the first door knife increases to the third safety gap. S2. The drive door opens further by a set distance. The first and second rollers of the door lock device move further to the first side by a certain distance. The second door knife is further resisted by the second roller and swings to the first side. At this time, since the first and second door knives are close to each other, the first door knife swings to the first side under the resistance of the second door knife and compresses the reset adjustment mechanism. Since the first roller, the first door knife, the second door knife, and the second roller move to the first side synchronously, the third safety gap between the first roller and the first door knife remains unchanged. S3. Continue driving the landing door. The second roller of the landing door locking device pushes the second door knife until the limiting shaft on the second door knife abuts against the first end of the sliding groove on the base. The second door knife and the first door knife then swing to the first side until the swing ends. When the first moving distance and the first toggle distance disappear, the unlocking lever forces the car door lock hook to lift through the vertical bar, and the car door lock hook unlocks the connection with the lock hook seat; S4. At this point, the landing door drives the car door to be fully opened.

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