Fastening device

Abstract

The utility model discloses a fastening device. A first door vane 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 idler wheels 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] The utility model belongs to the technical field of elevators, and particularly relates to a coupling device. Background Art

[0002] The locking device is a device on the car door side. When the outward-extending locking device and the floor door locking device cooperate to open and close the door, the two door knives of the outward-extending locking device are located between the two rollers of the floor door locking device. Under normal operating conditions, the car door drives the floor door to open, and the relative distance between the two door knives of the outward-extending locking device increases (this is the origin of the name of the locking device "outward-extending"). In emergency rescue conditions, the floor door drives the car door to open, and the relative distance between the two door knives decreases. Therefore, if the distance between the two rollers of the floor door locking device is set very small (that is, the locking size is set very small) due to the structural design of the floor door locking device itself, the setting distance between the two door knives will also be very small, so that the two door knives of the outward-extending locking device cannot be retracted with each other under emergency rescue conditions, thereby affecting emergency rescue. The traditional locking device is also not provided with the reset adjustment mechanism of the utility model to limit the movable position. Instead, it uses a limit bolt to fix the limit, so that the first door knife of the locking device cannot swing to the left under the "emergency rescue working condition". When the distance between the first door knife and the second door knife is too close, the first door knife will limit the left swing of the second door knife, resulting in the "unlocking rod" fixed on the second door knife being unable to lift the "car door lock hook" to achieve unlocking, and thus unable to achieve the emergency rescue of "the floor door drives the car door to open". At present, the traditional locking device cannot achieve the normal door opening for rescue outside the hall when dealing with the floor door lock device of small locking size. Therefore, there are great limitations in its promotion and application. At present, there is a lack of a locking device that can deal with small locking size to achieve the normal door opening for rescue outside the hall.

[0003] Therefore, a new technology is needed to solve the problem of lacking a new type of fastening device in the prior art. Utility Model Content

[0004] In order to solve the above problems in the prior art, the present invention provides a novel locking device, which can cope with the situation where the two rollers of the floor door lock device are set with a small locking size, and can realize normal door opening for rescue outside the hall.

[0005] The utility model adopts the following technical solutions:

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

[0007] The first door knife is arranged on the base through the first swing mechanism;

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

[0009] The second door blade is arranged on the base through the second swing mechanism;

[0010] The car door lock hook is rotatably arranged on the base and is located on the second side of the first door knife. The car door lock hook is used to be connected to a lock hook seat indirectly or directly arranged on the car in a timely manner; the car door lock hook has a vertical bar and a roller;

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

[0012] The first door knife is provided with an unlocking push rod; the second door knife is provided 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 push rod maintains a set distance and faces the roller or tangentially contacts the roller;

[0014] When the car door is closed and the car door lock hook is connected to the lock hook seat, the first door blade and the second door blade maintain a set gap or directly contact each other, and the unlocking rod and the vertical bar maintain a set first toggle distance;

[0015] When the tying device cooperates with the landing door locking device, the first door knife and the second door knife can be located between the two rollers of the landing door locking device.

[0016] Furthermore, a slide groove is provided on the base; 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, and the limiting shaft is connected to the slide groove.

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

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

[0019] Furthermore, the first door knife is provided with a limiting bent plate; a first limiting component is provided at the set position of 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 arranged on the base and are located on the first side of the first door knife, the front baffle and the rear baffle are maintained at a set spacing, and both are respectively provided with through holes; the push rod can movably pass through the two through holes, and the rear section of the push rod is sleeved 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 when the shoulder of the push rod abuts against the front baffle, it is the initial state of the compression spring.

[0022] Furthermore, the first door blade has a first flange; the second door blade has a second flange; a set gap is maintained between the first flange and the second flange or they are in direct contact with each other.

[0023] Furthermore, the right side of the first flange and the left side of the second flange are both smooth surfaces.

[0024] Furthermore, the reset adjustment mechanism includes a first magnet of the same polarity and a second magnet of the same polarity; the first magnet of the same polarity is arranged at a set position of the base and is located on the first side of the first door knife; the second magnet of the same polarity is arranged at a set position of the first door knife or the first swinging mechanism; the first door knife moves toward the first side through the first swinging mechanism, and the first magnet of the same polarity can face the second magnet of the same polarity.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The first door knife of the utility model is swingably arranged on the base through a first swing mechanism, and the second door knife is swingably arranged on the base through a second swing mechanism. In addition, the utility model is provided with a reset adjustment mechanism on the first side of the first door knife, and the reset adjustment mechanism can keep the first door knife in the set "initial state" (refer to Figure 3 ), so that the unlocking push rod can maintain the set distance facing the roller or tangentially contacting the roller, so that under normal operating conditions, the first door knife swings to the second side of the base, and the unlocking push rod pushes the roller to lift the car door lock hook, thereby realizing the unlocking of the "car door lock hook and lock hook seat" under normal operating conditions.

[0027] The reset adjustment mechanism also plays a role in achieving emergency rescue, and is also the key mechanism for the locking device of the present invention to cope with the "two rollers of the floor door lock device are set with a small locking size"; specifically, in reality, the two rollers of the floor door lock device need to be "set with a small locking size". If the reset adjustment mechanism of the present invention is lacking, it is easy for the second door knife to have insufficient space to swing toward the first side, making it difficult for the unlocking pull rod to lift the car door lock hook to unlock, making it difficult to achieve emergency rescue. In emergency rescue conditions, the floor door needs to drive the car door to open. At this time, the two rollers of the floor door lock device will translate toward the first side, and the second roller will resist the second door knife to swing toward the first side. The second door knife then resists the first door knife to swing toward the first side, and then the first door knife will compress the reset adjustment mechanism, so that the second door knife is fully activated, so that the unlocking pull rod will lift the car door lock hook to unlock the car door lock hook and the lock hook seat, so that people can achieve emergency rescue.

[0028] The utility model provides a locking device which can cope with the situation that two rollers of a landing door lock device are arranged with a small locking size, and can realize normal door opening for rescue outside the hall. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The technology of the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0030] Figure 1 This is a three-dimensional schematic diagram of the fastening device of the utility model from the first viewing angle;

[0031] Figure 2 This is a perspective schematic diagram of the fastening device of the utility model from a second viewing angle;

[0032] Figure 3 This is a front view of the connection between the car door lock hook and the lock hook seat of the coupling device of the utility model (partially showing the lock hook seat and guide member of the door opener frame; partially showing the two rollers of the landing door lock device) (partially showing the initial state of the first door blade; the first toggle distance; the first movable distance; the first safety gap; the second safety gap; the pressure F and the deadweight G);

[0033] Figure 4 yes Figure 3 A top view of the locking device (wherein the two rollers of the floor door locking device can be shown to be arranged with a small locking size; the first door blade and the second door blade can be shown to be located between the two rollers; and the first safety gap and the second safety gap can be shown);

[0034] Figure 5 is a schematic diagram of the three-dimensional structure of the first door knife and the second door knife (wherein, the plate thickness of the first door knife and the plate thickness of the second door knife can be shown);

[0035] Figure 6is a positional relationship diagram among the first roller, the first door blade, the second door blade, and the second roller (wherein it can be shown that the gap T3 between the first door blade and the second door blade is 0);

[0036] Figure 7 express Figure 3 Schematic diagram of the second roller just contacting the second door knife (wherein, it can be shown that the first movable spacing and the first toggle spacing remain unchanged, the second safety gap disappears, and the first safety gap increases to the third safety gap);

[0037] Figure 8 express Figure 7 Schematic diagram of the second roller further contacting the second door knife to lift the car door lock hook (wherein, it can be shown that the first active distance and the first toggle distance disappear, and the third safety gap remains unchanged);

[0038] Figure 9 yes Figure 8 A top view of the fastening device (wherein the third safety gap can be shown);

[0039] Figure 10 yes Figure 8 A schematic diagram of the back structure of the fastening device (which can show the connection relationship between the slide groove and the limit shaft);

[0040] Figure 11 This is a three-dimensional schematic diagram of the closing device after removing the second door knife, unlocking rod, lifting rod roller, second swing mechanism, and car door lock hook (including the arrangement relationship between the limit bending plate and the first limit assembly);

[0041] Figure 12 It is a partial schematic diagram of the abutment between the reset adjustment mechanism and the swing arm of the first swing mechanism (also a schematic diagram of the first embodiment of the reset adjustment mechanism);

[0042] Figure 13 It is a schematic diagram of the second embodiment of the reset adjustment mechanism (wherein the second door knife, unlocking rod, lifting rod roller, second swing mechanism, and car door lock hook of the locking device are not shown).

[0043] Reference numerals:

[0044] 1-locking device; 11-base; 12-first door blade; 121-first flange; 13-first swing mechanism; 14-second door blade; 141-second flange; 142-lifting rod roller; 15-second swing mechanism; 16-reset adjustment mechanism; 17-door lock hook; 171-vertical bar; 172-roller; 173-bearing hole; 174-ball bearing; 175-connecting shaft; A-first side; B-second side; 18-limiting bent plate; 19-first limit assembly; 191-fixing seat; 192-first limit member;

[0045] 21 - unlocking push rod; 22 - unlocking pull rod; C1 - first toggle distance; 23 - slide groove; D1 - first end; D2 - second end; C2 - first movable distance; 24 - first swing arm assembly; 25 - second swing arm assembly; 26 - third swing arm assembly; 27 - limit block; 28 - guide member; 281 - arc groove; 29 - lock hook seat;

[0046] 31-first hinge axis; 32-swing arm; 321-first bearing hole; 322-second bearing hole; 323-ball; 33-second hinge axis; 34-limiting axis;

[0047] 41-rod; 411-shaft shoulder; 42-spring; 43-front baffle; 44-rear baffle;

[0048] 51-first magnet of the same polarity; 52-second magnet of the same polarity; E1-initial facing distance;

[0049] 6-two rollers; 61-first roller; 62-second roller;

[0050] T1-the thickness of the first door knife; T2-the thickness of the second door knife; T3-the gap between the first door knife and the second door knife;

[0051] L0-fastening dimension; L1-first safety gap; L2-second safety gap; L3-third safety gap;

[0052] F-pressure; G-self-weight (indicating gravity). DETAILED DESCRIPTION

[0053] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0054] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. In addition, the terms "upper," "lower," "left," and "right" used in this utility model are only used with respect to the relative positions of the components of the utility model in the accompanying drawings.

[0055] Reference Figures 1 to 12 A fastening device 1 includes a base 11, a first door blade 12, a first swing mechanism 13, a second door blade 14, a second swing mechanism 15, a reset adjustment mechanism 16 and a car door lock hook 17;

[0056] The first door blade 12 is swingably disposed on the base 11 via the first swing mechanism 13;

[0057] The reset adjustment mechanism 16 is directly or indirectly provided on the base 11 and is located on the first side A of the first door blade 12;

[0058] The second door blade 14 is swingably disposed on the base 11 via the second swing mechanism 15;

[0059] The car door lock hook 17 is rotatably mounted on the base 11 and is located on the second side B of the first door blade 12 and the second door blade 14. The car door lock hook 17 is used to connect with a lock hook seat 29 that is indirectly or directly mounted on the car in a timely manner. The car door lock hook 17 has a vertical bar 171 and a roller 172.

[0060] The base 11 can be arranged on the car (such as the car door);

[0061] The first door blade 12 is provided with an unlocking push rod 21; the second door blade 14 is provided with an unlocking pull rod 22;

[0062] The first door blade 12 maintains a set initial state through the first swing mechanism 13 and the reset adjustment mechanism 16; in the initial state, the unlocking push rod 21 maintains a set distance and faces the roller 172 or tangentially contacts the roller 172;

[0063] When the car door is closed and the car door lock hook 17 is connected to the lock hook seat 29, the first door blade 12 and the second door blade 14 maintain a set gap or directly contact each other, and the unlocking rod 22 and the vertical bar 171 maintain a set first toggle distance C1;

[0064] As the elevator car runs, when the coupling device 1 cooperates with the floor door locking device, the first door knife 12 and the second door knife 14 can be located between the two rollers 6 of the floor door locking device; wherein the floor door locking device is a floor door side device.

[0065] Reference Figures 1 to 12 In one embodiment, the car door lock hook 17 has a bearing hole 173, and the car door lock hook 17 is connected to a connecting shaft 175 provided on the base through the bearing hole 173 and the ball 174. Under the action of external force, the car door lock hook 17 can rotate around the connecting shaft 175.

[0066] Reference Figures 1 to 12In one embodiment, the lock hook seat 29 is fixed to the door opener frame, which is located at a predetermined position in the car. Thus, the lock hook seat 29 is "indirectly" attached to the car. During the car door opening and closing process, the lock hook seat 29 does not move. When the car door is closed, the car door lock hook 17 engages with the lock hook seat 29, thereby preventing the car door from driving the landing door to open, and also preventing the landing door from driving the car door to open.

[0067] When the car door hook 17 is connected to the hook seat 29, opening the door under normal elevator operation requires first unlocking the connection between the car door hook 17 and the hook seat 29. Under normal operation, the first door blade 12 in its initial state swings toward the second side B under the action of an external force, actuating the roller 172 and tilting the car door hook 17. This unlocks the connection between the car door hook 17 and the hook seat 29, allowing the car door to smoothly drive the landing door to open. Under normal operation, before unlocking, the second door blade 14 loses the blocking effect of the guide member 28 and, under its own weight, swings to the stop block 27 at the second end D2 of the chute 23, preventing it from interfering with the swing of the first door blade 12 toward the second side B.

[0068] When the car door hook 17 is connected to the hook seat 29, the elevator is in an emergency rescue state. To open the door, it is also necessary to first unlock the connection between the car door hook 17 and the hook seat 29. In the emergency rescue state, the landing door is driven, and the two rollers 6 of the landing door lock device on the landing door move toward the first side A, contacting the second door blade 14, forcing the second door blade 14 to contact the first door blade 12 to compress the reset adjustment mechanism 16. After the second door blade 14 fully moves toward the first side A, the unlocking rod 22 on the second door blade 14 lifts the car door hook 17, unlocking the connection between the car door hook 17 and the hook seat 29, thereby allowing the landing door to smoothly drive the car door to open and achieve emergency rescue.

[0069] Reference Figures 1 to 12In one embodiment, when the car door is closed and the car door hook 17 is connected to the hook seat 29, the lifting rod roller 142 on the second door blade 14 is blocked by the guide member 18 on the door opener frame, and the second door blade 14 is stably positioned in a set position. In this set position, the unlocking lever 22 on the second door blade 14 and the vertical bar 171 of the car door hook maintain a set first toggle distance C1. The first door blade 12, under its own weight, swings until it contacts the return adjustment mechanism 16 (directly or indirectly) and is limited by the return adjustment mechanism 16. At this time, the unlocking push rod 21 on the first door blade and the roller 172 of the car door hook maintain a set distance, facing each other, or directly contacting the outer edge of the roller 172. The guide member 28 has an arcuate groove 281 for timely blocking the second door blade 14. The guide member 28 is fixed to the door opener frame. The first door blade 12 conflicts with the reset adjustment mechanism 16 through the first swing mechanism 13, which is an "indirect" conflict; the first door blade 12 conflicts with the reset adjustment mechanism 16 through itself, which is a "direct" conflict.

[0070] Reference Figures 1 to 12 In one embodiment, a slide groove 23 is provided on the base 11; 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, and the limiting shaft 34 is connected to the slide groove 23.

[0071] Reference Figures 1 to 12 In one embodiment, a limit block 27 is provided on the second end D2 of the slide groove 23; the limit shaft 34 can move along the slide groove 23, and after movement, can abut against the limit block 27.

[0072] 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 blade 14 is connected to the base 11 through the second swing arm assembly 25 .

[0073] Reference Figures 1 to 12 In one embodiment, the first swing mechanism 13 includes at least one set of third swing arm components 26; the set position of the first door knife 12 is connected to the base 11 through the third swing arm component 26.

[0074] Reference Figures 1 to 12 In one embodiment, the first door blade 12 is connected to the base 11 through two sets of the third swing arm assemblies 26. Through the two sets of the third swing arm assemblies 26, the first door blade 12 is swingably disposed on the base 11.

[0075] Reference Figures 1 to 12 In one embodiment, each set 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, and 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 blade 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.

[0076] Reference Figures 1 to 12 In one embodiment, the second swing arm assembly 25 has the same structural composition as the third swing arm assembly 26, and the second door knife 14 is swingably set on the base 11 through the second swing arm assembly 25. In this case, the first hinge shaft of the second swing arm assembly 25 is set at a set position of the base 11, and the second hinge shaft of the second swing arm assembly 25 is set at a set position of the second door knife 14. Finally, the swing arm of the second swing arm assembly 25 connects the first hinge shaft and the second hinge shaft.

[0077] Reference Figures 1 to 12 In one embodiment, the difference in structural composition between the first swing arm assembly 24 and the second swing arm assembly 25 is that: 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 to limit 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.

[0078] Reference Figures 1 to 12 In one embodiment, the slide groove 23 is a curved slide groove.

[0079] Reference Figures 1 to 12 In one embodiment, the first door knife 12 is provided with a limiting bent plate 18; a first limiting component 19 is provided at the set position of the base 11, 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 toward the second side B under the action of external force, it can abut against the first limiting component 19 through the limiting bent plate 18.

[0080] Reference Figures 1 to 12 In one embodiment, there are a plurality of the limiting bent plates 18 , and a corresponding plurality of the first limiting components 19 are provided.

[0081] Reference Figures 1 to 12 In one embodiment, each set of the first limiting components 19 includes a fixed seat 191 and a first limiting member 192; the fixed seat 191 is provided on the base 11 and is located on the second side B of the first door blade 12, and the first limiting member 192 is provided on the fixed seat 191. After the first door blade 12 swings toward the second side B under the action of an external force, the limiting bent plate 18 abuts against the first limiting member 192, and the first door blade 12 cannot continue to swing excessively toward the second side B, thereby achieving the purpose of limiting. After the first door blade 12 swings toward the second side B under the action of an external force, if the unlocking push rod 21 is sufficient to unlock the connection between the car door lock hook 17 and the lock hook seat 29, the provision of the limiting bent plate 18 and the first limiting component 19 can serve as a limiting protection.

[0082] In one embodiment, the reset adjustment mechanism 16 is provided with a plurality of reset adjustment mechanisms 16. Figures 1 to 12 In this embodiment, two return adjustment mechanisms 16 are provided, each acting on the two swing arms 32 of the first swing mechanism 13 or directly on the first door blade 12. Providing two return adjustment mechanisms 16 can ensure smoother movement of the first door blade 12. For structural simplicity, only one return adjustment mechanism 16 can be provided, acting on the swing arms 32 of the first swing mechanism 13 or on the first door blade 12.

[0083] 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 blade 12. The front baffle 43 and the rear baffle 44 are spaced apart at a predetermined distance from each other and each has a through hole. The push rod 41 movably passes through the two through holes, and the rear end of the push rod 41 is sleeved with the spring 42. The spring 42 is positioned 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, the spring 42 can be compressed to move backward. 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 contact with the front baffle 43.

[0084] Reference Figures 1 to 12 In one embodiment, the rear baffle 44 is a part of the base 11 , and is a baffle formed by bending the side of the base 11 .

[0085] 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 (it can be just abutted or excessively abutted), it is the initial state of the compression spring, which 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 △L; the first swing mechanism 13, the first door knife 12 and its auxiliary components form an overall swing structure, which will swing down under its own weight G. After swinging down, the first swing mechanism 13 or the first door knife 12 will swing down. The knife 12 abuts against the push rod 41, so the first swing mechanism 13 or the first door knife 12 exerts a pressure on the push rod 41, and the pressure is set to F; then the elastic coefficient, the compression amount and the pressure satisfy the relationship: K×△L≥F. This design can ensure that when the compression spring is in the "initial state", the shoulder 411 of the push rod 41 can abut against the front baffle 43 and overcome the pressure generated by the downward swing of the "integral swing structure", so that the first door knife 12 can maintain the set "initial state" setting (see the "initial state setting of the first door knife 12" Figure 3 The auxiliary components of the first door blade 12 include an unlocking push rod 21 and a limiting bent plate 18 .

[0086] Among them, 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 easy to be compressed. Then the "integrated swinging structure" will still swing a little distance toward the first side A after abutting the top rod 41, which will cause the first safety gap L1 between the first door knife 12 and the first roller 61 to decrease. When the car runs upward, the first door knife 12 and the first roller 61 are prone to collision, thereby causing operational hazards.

[0087] Of course, the value of "K×ΔL" should not be set too large. Otherwise, in an emergency rescue situation, the second door blade 14 will abut against the first door blade 12 and swing toward the first side A, causing a jam, making it difficult to achieve the emergency rescue function. Generally speaking, F ≤ K×ΔL < nF is a suitable value, where n is a coefficient and can be within the range of 2 to 5, such as n = 2 or n = 2.5.

[0088] Reference Figure 13In another embodiment, the reset adjustment mechanism 16 includes a first magnet 51 of the same polarity and a second magnet 52 of the same polarity; the first magnet 51 of the same polarity is arranged at a set position of the base 11 and is located on the first side A of the first door knife 12; the second magnet 52 of the same polarity is arranged at a set position of the first door knife 12 or the first swinging mechanism 13, thereby, the second magnet 52 of the same polarity is "indirectly" arranged on the base 11. The first swing mechanism 13, the first door blade 12, and their associated components form an integrated swinging structure that swings downward under its own weight G. After this downward swing, the second magnet 52 of the same polarity faces the first magnet 51 of the same polarity. Due to the "like charges repel" effect of magnets, the first door blade 12 can maintain its set "initial state." Simultaneously, in an emergency, the reset adjustment mechanism 16 can compress the "distance between the first magnet 51 and the second magnet 52 of the same polarity" to provide sufficient movement space for the second door blade 14. This allows the unlocking lever 22 to lift the car door lock hook 17 and unlock the door. This reset adjustment mechanism 16 of this embodiment also facilitates the present invention's engagement device 1 in situations where the two rollers 6 of the floor door lock device are configured with a small engagement dimension L0. The "initial facing distance E1" and magnetic field strength between the first magnet 51 and the second magnet 52 of the same polarity can be set according to actual conditions.

[0089] Reference Figures 1 to 12 In one embodiment, the first door blade 12 has a first flange 121; the second door blade 14 has a second flange 141; when the car door is closed and the car door lock hook 17 and the lock hook seat 29 are connected, a set gap is maintained between the first flange 121 and the second flange 141 or they are in direct contact.

[0090] Reference Figures 1 to 12 In one embodiment, the two rollers 6 of the floor door lock device are the first roller 61 and the second roller 62 respectively, and the floor door lock device belongs to the floor door side device; the first door knife 12 and the second door knife 14 are the interface components of "the car door system connecting with the floor door system"; the first roller 61 and the second roller 62 are the interface components of "the floor door system connecting with the car door system".

[0091] When the car door and the landing door are in a closed state, the first roller 61 is located on the left side of the first flange 121 , and the second roller 62 is located on the right side of the second flange 141 .

[0092] 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 floor door locking device; the right side of the second flange 141 is a mating surface that can cooperate with the second roller 62 of the floor door locking device.

[0093] 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 floor door lock device are the first roller 61 and the 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; the fastening size that the fastening device 1 can handle is set to L0;

[0094] The fastening device 1 can cope with a fastening size that satisfies the relationship: L0 = L1 + T1 + T2 + T3 + L2;

[0095] Since the first safety gap L1 and the second safety gap L2 are both safety values ​​(cannot be made smaller), in practice, if a "smaller engagement size" is required for the two rollers 6 of the landing door lock device, the "smaller engagement size" can only be achieved by addressing the three influencing factors T1, T2, and T3. The engagement size refers to the distance between the two rollers 6 of the landing door lock device.

[0096] When T3=0, at this time, the first door blade 12 and the second door blade 14 are in contact with each other, and the minimum value of the fastening size that the fastening device 1 can handle is: L0=L1+T1+T2+L2.

[0097] Among them, when T3=0, specifically, the right side of the first flange 121 and the left side of the second flange 141 are in contact with each other. Preferably, the right side of the first flange 121 and the left side of the second flange 141 are both smooth surfaces.

[0098] Since the first flange 121 and the second flange 141 are set to a light contact state, the "minimum fastening size" that the fastening device 1 of the present invention can handle in this embodiment is achieved. In another embodiment, to meet the need for a "smaller fastening size", the thickness T1 of the first door blade and the thickness T2 of the second door blade can be further reduced while ensuring that the structural strength of the first door blade 12 and the second door blade 14 meets the requirements. Preferably, in another embodiment, the first door blade 12 and the second door blade 14 are selected from high-strength alloy parts to further reduce the thickness T1 of the first door blade and the thickness T2 of the second door blade.

[0099] In one embodiment, when the first door knife 12 and the second door knife 14 are in direct contact with each other (such as lightly touching each other), the two flanges will rub against each other during the process of the second door knife 14 pressing the first door knife 12 to swing left, resulting in increased movement resistance and wear of the contact surface. Therefore, this problem can be solved by providing a roller and a matching sliding surface on the door knife; if a roller is provided on the right side of the first flange 121, a sliding surface matching 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, a sliding surface matching the roller is provided on the right side of the first flange 121.

[0100] Another object of the present invention is to provide an operating method for a fastening device to scientifically guide people to achieve rescue outside the hall.

[0101] Reference Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 and Figure 9 A method for operating a fastening device is provided, which is based on the fastening device 1 and specifically comprises the following steps:

[0102] S1. In emergency rescue conditions, the car door and landing door are not open. At this time, refer to Figure 3 and Figure 4 A first safety gap L1 is left between the first roller 61 of the floor door lock device and the first flange 121 of the first door blade 12, and a second safety gap L2 is left between the second roller 62 and the second flange 141 of the second door blade 14; a first movable gap C2 is left between the limiting shaft 34 on the second door blade 14 and the first end D1 of the slide groove 23 on the base; and the first toggle gap C1 is left between the unlocking rod 22 and the vertical bar 171 on the car door lock hook;

[0103] The driving landing door is slightly opened for a distance, and the first roller 61 and the second roller 62 of the landing door locking device move horizontally to the first side A for a distance, while the car door and the said fastening device 1 do not move temporarily. Figure 7 , the second roller 62 contacts the second door blade 14, the second safety gap L2 disappears, the first active gap C2 and the first shifting gap C1 remain unchanged, and the first safety gap L1 between the first roller 61 and the first door blade 12 increases to a third safety gap L3;

[0104] S2. Drive the landing door to further open by the set distance, and the first roller 61 and the second roller 62 of the landing door lock device further translate toward the first side A for a distance. The second door blade 14 is further resisted by the second roller 62 and swings toward the first side A. At this time, since the first door blade 12 and the second door blade 14 are close to each other (the "close position" includes an initial gap setting or an initial contact setting), the first door blade 12 swings toward the first side A under the resistance of the second door blade 14 and compresses the reset adjustment mechanism 16. Particularly, since the first roller 61, the first door blade 12, the second door blade 14 and the second roller 62 move toward the first side A synchronously, the third safety gap L3 between the first roller 61 and the first door blade 12 remains unchanged.

[0105] S3, continue to drive the landing door, refer to Figure 8 and 9 , the second roller 62 of the floor 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 slide groove 23 on the base, and the second door knife 14 and the first door knife 12 complete their swing toward the first side A, wherein the first active spacing C2 and the first toggle spacing C1 disappear. At this time, the unlocking rod 22 forces the car door lock hook 17 to lift up through the vertical bar 171, and the car door lock hook 17 unlocks the connection with the lock hook seat 29;

[0106] S4. At this point, the landing door successfully drives the car door to fully open, enabling emergency rescue.

[0107] The operating method of the coupling device of the utility model can scientifically guide people to realize the rescue outside the hall in an orderly manner.

[0108] In one embodiment, the first side A specified in the present invention is the left side, and the second side B is the right side.

[0109] The utility model is to invent a fastening device, which mainly relates to the structural protection of the novel fastening device. Among them, the car, car door, door opener frame, floor door, and floor door locking device can be referred to the existing technology and will not be described in detail here.

[0110] For other contents of the fastening device described in the present invention, please refer to the prior art and will not be described in detail here.

[0111] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fastening 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 arranged on the base through the first swing mechanism; The reset adjustment mechanism is directly or indirectly provided on the base and is located on the first side of the first door blade; The second door blade is arranged on the base through the second swing mechanism; The car door lock hook is rotatably arranged on the base and is located on the second side of the first door knife. The car door lock hook is used to be connected to a lock hook seat indirectly or directly arranged on the car in a timely manner; the car door lock hook has a vertical bar and a roller; The base can be arranged on the car; The first door knife is provided with an unlocking push rod; the second door knife is provided 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 push rod maintains a set distance and faces the roller or tangentially contacts the roller; When the car door is closed and the car door lock hook is connected to the lock hook seat, the first door blade and the second door blade maintain a set gap or directly contact each other, and the unlocking rod and the vertical bar maintain a set first toggle distance; When the tying device cooperates with the landing door locking device, the first door knife and the second door knife can be located between the two rollers of the landing door locking device.

2. The fastening device according to claim 1, characterized in that: A slide groove is provided on the base; 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, and the limiting shaft is connected to the slide groove.

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

4. The fastening device according to claim 1, wherein: The first swing mechanism includes at least one set of third swing arm components; the set position of the first door knife is connected to the base through the third swing arm component.

5. The fastening device according to claim 1, wherein: The first door knife is provided with a limiting bent plate; a first limiting component is provided at the set position of 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 fastening 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 arranged on the base and are located on the first side of the first door knife, the front baffle and the rear baffle are kept at a set distance, and both are respectively provided with through holes; the push rod can movably pass through the two through holes, and the rear section of the push rod is sleeved 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 fastening device according to claim 6, characterized in that: The spring is a compression spring, and when the shoulder of the push rod abuts against the front baffle, it is in the initial state of the compression spring.

8. The fastening device according to claim 1, wherein: The first door blade has a first flange; the second door blade has a second flange; a set gap is maintained between the first flange and the second flange or they are in direct contact.

9. The fastening device according to claim 8, characterized in that: The right side of the first flange and the left side of the second flange are both smooth surfaces.

10. The fastening device according to claim 1, wherein: The reset adjustment mechanism includes a first magnet with the same polarity and a second magnet with the same polarity; the first magnet with the same polarity is arranged at a set position of the base and is located on the first side of the first door knife; the second magnet with the same polarity is arranged at a set position of the first door knife or the first swinging mechanism; the first door knife moves toward the first side through the first swinging mechanism, and the first magnet with the same polarity can face the second magnet with the same polarity.

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