KR20020079606A - Car Door Lock Mechanically Driven by Landing Door Lock - Google Patents

Abstract

PURPOSE: A car door locking device mechanically driven by a landing door locking device is provided to make car and landing doors be opened by the landing door locking device when a car locates at the height of a floor and to prevent the car from being opened when the car is fixed between two floors. CONSTITUTION: A car door locking device(61) mechanically driven by a landing door locking device with rotating on a supporting plate(40) is composed of a jointably deformable parallelogram assembly having two vertical plates(12,121) and upper and lower inverted T-shaped connecting rods(32,34), a prestressed spring of which an end is attached to one of the plates and the supporting plate to return the deformable parallelogram assembly toward a separated position, and two vertical rods(48,481) formed with a structural bar having an L-shaped section with a flat vane unit(49) and a curved vane unit(51) and suspended from the plates with having a curved vane unit switched toward each other by a jointable device of a jointable parallelogram-shaped suspension(52,54,521,541).

Description

Car Door Lock Mechanically Driven by Landing Door Lock

The present invention relates to a coupling device between a car door and a landing door of an elevator. The coupling device is attached to the car door of the elevator, while actuating the lock of the landing door to engage or unlock the landing door when accompanied by open and closed movement by the drive system so that it moves simultaneously with the car door. It is contemplated that this is a mechanical device that makes it possible to connect the landing door to the car door. The landing door lock is a mechanical device that prevents any opening of the landing door except for the action of the car door on such a lock or opening by adjustment of the management personnel from the landing using special keys in an emergency.

Many such types of coupling devices are known in the art. Such a device functions satisfactorily as long as the elevator functions normally, but it cannot guarantee the absolute safety of the passengers in the car in case of breakage. For example, if the car is inadvertently given an opening command when the current is not cut and is clamped between the two floors, there is a risk that passengers will fall through the opening of the car to the landing or fall into the elevator shaft.

Also, if an abnormal current occurs when the car is at the height of the floor, passengers will not be able to leave the car without outside assistance.

From US Pat. No. 6,021,871 a coupling device is known which ameliorates this drawback. The device has two longitudinal rods and two parallel bars so that the rods can be moved separately or closer to each other while maintaining parallel and longitudinal directions, the center of the rod and the top of the rod attached to the top of the car door and And a deformable assembly in the form of an articulated parallelogram divided into joints at the end on the lower end.

The coupling device according to the patent further comprises a guide rail attached to the car and having an entry cam on a roller roll mounted to be pivoted at the upper end of one of the rods. The cam serves to separate each engagement between the two rods opposing the force of the return spring and the two rollers supported by the locking device of the landing door of the floor while the car arrives at the floor and the car door is opened. Profile, thus unlocking the lock and engaging the landing and car doors together.

The coupling device according to the patent further comprises a locking mechanism having a transfer lever attached to one of the rods and a triangular rocker articulated by one of the tops at the end of the locking mechanism. At the second top, the rocker supports the support rollers and is articulated by its third top with a latch having bolts that can cooperate with the keeper carried by the car, preventing the opening of the car door. The movement path of the support roller is defined by a fixed support rail mounted on the landing door.

With this arrangement, when the car arrives at the open zone and is given an open command, the car door begins to open through a short path of travel corresponding to the play between the bolt and the keeper. This movement opens the deformable assembly in the form of a parallelogram and an adjacent portion of the support roller on a fixed support rail that pivots and unlocks the latch. The continuous opening movement of the car door further opens the parallelogram assembly until the rod is positioned against the roller of the locking device of the landing door. Thereafter, the locking device may be unlocked and accompanied toward the fully open position together with the car door.

In contrast, when the car is fixed between two landings and positioned in an area without a support rail, the latch remains locked and the car door does not open, even if an open command is given.

Thus, the coupling device according to the patent guarantees passenger safety by the fact that the car door remains locked when the car is fixed between the two floors, but from the inside of the car when the car is stopped in the open area and there is an abnormal current. Car doors and landing doors cannot be opened.

In addition, such coupling devices are relatively complicated because they use a number of expensive components such as entry cams, support rails and rocker transmission mechanisms that must be precisely arranged.

1 is an exploded perspective view of a coupling device according to the present invention;

FIG. 2 is a front view of the coupling device observed when the car descends toward the floor and as viewed from inside the car;

3 is a front view of the coupling device in a normal operating state showing when the car is stopped at the height of the floor and the car door is opened.

Fig. 4 is a front view of the coupling device showing how the car door and the landing door can be opened from the inside of the car in a situation where an abnormal current occurs and the car is stopped at the height of the floor.

Fig. 5 shows the state of the coupling device when the car is fixed between two layers.

<Explanation of symbols for the main parts of the drawings>

12: longitudinal plate

32: Bar

40: support plate

42: car door

48: longitudinal rod

49: flat wing

51: curved wing

60: oval hole

61: Car Door Locking Mechanism

70: bolt

The present invention prevents the door opening from the inside when the car is locked between two floors, while the car door of an elevator allows passengers to open the car door and landing door from the inside of the car when the car is fixed at the height of the floor. And to remedy these drawbacks by proposing a coupling device between the landing doors.

The locking device according to the invention is characterized in that it comprises the following.

A deformable assembly in the form of an articulated parallelogram having two longitudinal plates, an inverted T-shaped upper bar and a lower bar. The two bars are mounted to pivot about the center on a support plate parallel to each other and attached to the top of the car door, and the center of the T-bar is connected to drive the mechanism for the car door so that the deformable assembly is adjacent to each other. The position can be moved between the position where the plates are separated.

A pre-tensioned spring whose end is attached to one plate and a support plate to return the deformable assembly towards the separated position.

Two longitudinal rods consisting of a structural bar with an L-shaped section with flat wings and curved wings. The rods are taken under the action of their own weight and are of articulated parallelogram allowing the rods to move separately from each other between (and between) the equilibrium positions which are closer to each other. It is suspended from the plate with curved wings turned towards each other by a shaped float, the rod supporting some stopping means.

When the rod is returned to its equilibrium position and the unlocked position, which is mounted to rotate on the support plate and is retracted by the stop means of one or the other rod when the rod is introduced into its operating position, which is the position at which the car door is engaged. A car door locking mechanism that can be pivoted between locking positions to restore normal conditions.

The invention will be better understood from the detailed description of the embodiments of the coupling device with reference to the accompanying drawings.

First, the structure of the coupling device according to the present invention will be described with reference to Figs. These figures show the coupling device observed from the outside of the car. Such a coupling device will be described which is symmetrical with respect to the longitudinal perpendicular plane, only part of which is shown on the left of the figure. The same elements on the right side will be denoted by the same reference numerals to which index 1 is assigned.

The engagement device is the length of the bars 16, 18, 16 ₁ , 18 ₁ on the pins 24, 26, 28, 30 supported by the upper bar 32 and the straight lower bar 34, which are in the form of an inverted T-shape, respectively. ) Have two elongated longitudinal plates 12, 12 ₁ , which are articulated at two points. These two bars are constantly parallel to each other and articulated at an intermediate point in the lengths 36 and 38 of the bars on the support plate 40 attached above the car door 42.

Thus, the plates 12, 12 ₁ and bars 32, 34 can be moved, for example, from the separated position shown in FIG. 3 to a closer position to each other shown in FIG. 2 while the plates are always in the longitudinal direction. It forms an articulated parallelogram that can be deformed.

For example, a tension spring 44 attached to a support plate 40 by its end on one of the plates 12 may have the plates 12, 12 ₁ separated from each other and the bars 32, 34 approximately horizontal ( 3) Return articulated parallelogram system 12, 12 ₁ , 32, 34 to position.

This position is defined by placing one end of the bar 32 relative to the stop 46 attached to the support plate 40. The mutually proximal position is defined by placing the other end of the T-shaped bar on the second stop 47 attached to the support plate 40.

Two longitudinal rods 48, 48 ₁ comprising structural bars having an L-shaped cross section, each comprising a flat wing 49 applied on the corresponding plate and the curved wing 51, are provided with two articulated floating systems. It floats from the boards 12 and 12 ₁ by it. The curved vanes of the two rods are adjacent and diverted in opposition to the back. The rod then supports the stops 53, 53 ₁ , whose role will be described.

The same floating system shown only on the left side of FIG. 1 will be described. This floating system comprises two parallel floating bars 52, 54 articulated at one of their ends on pins 55, 59 attached to the upper and lower ends of the plate 12. The other end of the floating bar supports the pins 56, 58 received in elliptical holes 60, 62 drilled in the plate 12. These same pins 56, 58 are pivoted in holes 64, 66 drilled in the left rod 48. Thus, this plate 12 having a corresponding rod 48 and two corresponding floating bars 52, 54 forms a deformable articulated parallelogram.

The elliptical holes 60, 62 are from top to bottom of FIG. 2 such that when the rod is attached to the plate 12 by two floating bars 52, 54, it is suspended under its own weight in the original low position shown in this figure. It is inclined to and has a direction inclined from left to right. The rod 48 can be moved away from this position by pressing to the right in FIG. 2 until the pins 56, 58 stop against the upper end of the elliptical hole.

A locking device 61 comprising an S-shaped pivot element 65 symmetrical with respect to the pin and a lever arm 68 integrally attached to the center of the S-shaped element 65 are centered around the pin 63. It is mounted at the center of the support plate 40 so as to pivot. At its end, the lever arm supports a bolt 70, which can cooperate with a keeper 72 attached in the fixture of the car. The bolt 70 and the keeper 72 form a car door lock.

The locking device also has two contacts that are part of the safety chain, one of which is attached to the end of the lever arm and the other 77 to the car. The car cannot leave until the chain is closed.

Under the action of the weight of the lever arm 68, the locking device 61 causes it to rotate about the pin 63 until it rests on the stop 76 attached to the support plate. In this position, bolt 70 cooperates with keeper 72 to engage the car door lock.

2 and 3 show the coupling device in an assembled state. The plates 12, 12 ₁ are inverted T-shaped bars 32 and straight bars by introducing joint pins in the holes 16, 16 ₁ , 18, 18 ₁ , respectively, and attaching the joint pins by means of a circlip (not shown). 34 is assembled. Thereafter, the plate spans the end of the element 65. On adjacent longitudinal edges of the plate, cuts 78, 78 ₁ are formed to deviate from the end of the exposed element 65. The floating bars 52, 54, 52 ₁ , 54 ₁ are then attached to the plates 12, 12 ₁ , after which the rods introduce the inlet pins 56, 58 into the holes 64, 66, 64 ₁ , 66 ₁ . , 56 ₁ , 58 ₁ ). The pin is held in the hole by a nut, not shown.

As shown in FIG. 3, the stops 53, 53 ₁ formed on the rods then penetrate the cuts 78, 78 ₁ and are exactly near the end of the pivot element 65.

In a known manner, the car door is given an opening and closing movement by the drive mechanism 83 shown in FIG. This mechanism includes a drive pulley 86 and a belt 84 wound around an idle pulley 88. The central foot of the bar 32 is articulated by the fastener 90.

The engagement device also has a catch 92 mounted to pivot about a pivot pin 94 attached to the support plate 40. At one end, the catch supports a pin 96 (FIG. 2) penetrated into a notch 98 formed at the end of the T-shaped bar 32 opposite one lying on the stop 46. As shown in FIG. The catch is retracted by the spring in the direction in which the pin 96 penetrates into the notch 98 and is individually moved from the position at which the closing movement of the car door is initiated by a fixed stop 102 mounted on the lintel of the car. Can be.

As shown in Figure 2, each landing door 104 has an upper portion with a locking device 106 used to engage the landing door. This locking device has a fixing piece 108 attached to the landing door and having a fixing roller 110. The locking device also has a pivot piece 112 that can pivot about the pin 114 supported by the stationary piece. The pivot piece has a moving roller mounted on the other side of the roller 110 with respect to the pin 114 (the other side of the pin 114 with respect to the roller 110). The pivot piece is provided on the side where the moving roller 116 is located with a counterweight 118 for returning the pivot piece to an equilibrium position where the moving roller is actually at the same level as the stationary roller. The pivot piece is provided at an opposite end from the counterweight by having a keeper hole through which the bolt 120 connected to the lintel 122 of the landing door can penetrate.

In Figure 2, the moving piece 112 is shown in a locked position where the bolt 120 is engaged with the keeper hole. After that, the landing door is locked. In this position, the distance d measured in the horizontal direction between the rollers 110, 116 is the distance d between adjacent edges of the plates 12, 12 ₁ when the coupling device is closed, as shown in FIG. Greater than ₁ ) However, the distance d is smaller than the distance d ₂ separating the adjacent edges of the plates when the coupling devices are moved individually as shown in FIG. 3.

If the moving piece 112 is pivoted in the direction of the arrow in Fig. 2, the bolt 120 is disengaged from the keeper, and the moving roller 116 is moved slightly away from the fixing roller 110. As shown in FIG.

The operation of the coupling device will be described.

1. Normal operation

2 and 3 show normal operation of the coupling device. When the car is moved, the engagement device is in the retracted state shown in FIG. The plates 12, 12 ₁ are closer to each other and the rods 48, 48 ₁ are in a lower position under the action of their own loads. Thus, the rod can freely pass between the two rollers 110, 116 of the landing door lock. When the car stops at the height of the floor, the elevator controller gives an opening command to the drive mechanism 83. This mechanism drives the belt 84 in the direction of the arrow f to cause separation of the plates 12, 12 ₁ . Thereafter, the coupling device is in the state shown in FIG.

When the T-shaped bar arrives in the horizontal position, the pin 96 of the catch 92 is trapped in the notch 98 of the bar to secure the coupling device in the open position.

Separation movement of the plate is transmitted to the rods 48, 48 ₁ . In this movement, the bending vanes 51, 51 ₁ of the rod are stopped relative to the rollers 110, 116. This first pivots the moving piece 112 of the landing door slightly in a clockwise direction to unlock the landing door, and then the roller is suspended in the oval holes 60, 62 because the rollers are kept constant. The rods 48, 48 ₁ are raised by pivoting the pins 56, 56 ₁ , 58, 58 _{1 of} 54, 52 ₁ , 54 ₁ ).

The rods are in close proximity to each other shown in FIG. In the movement of the rod, the rod is made of an S-shaped piece 65 because of the stops 53, 53 ₁ held by the rod to pivot the lever 68. The safety lock 61 is then unlocked. The landing door is then moved integrally with the car door by the drive mechanism 83.

2. When the car is left in the floor due to abnormal current

Thereafter, the coupling device is in the state shown in FIG. According to the invention, even in such a situation the door can be manually opened from the inside by the passenger. This is enough to press the car door in the direction of the arrow in FIG. In this movement, the wing 51 of the left rod 48 stops against the roller 116 and unlocks the landing door lock. In addition, the rod is lifted upward and to the right, and its stop 53 pivots the S-shaped piece 65 to open the safety lock 61.

Of course, opening may also be performed from the landing. This situation is illustrated by FIG. The opening of the door is then caused by the movement of the fixing roller 110 in contact with the rod 48 ₁ by being pulled on the landing door and disconnecting the bolt from the keeper 72.

3. The car is fixed between two floors

This situation is illustrated by FIG. The engagement device is in a retracted state and the rods 48, 48 ₁ are in the low position. When the rollers 110 and 116 are not at this height, it is impossible to pivot the pod manually because they are not accessible from the inside of the car or mechanically. Even if the current is not interrupted and an opening command is given by the passenger, the opening mechanism 83 (FIG. 1) will actually introduce the coupling device into an open position where the plates are completely separated from each other, but the rod remains at a low position. Will not act on the unlocking device 81 because there are no rollers 110, 116.

Thus, the door cannot be opened from the inside. Thus, this avoids any risk of falling into the landing or falling into the shaft. On the other hand, it is possible for the management personnel to open the door completely safely from the landing by means of a special key.

As a result, the present invention allows the car door and landing door to be opened by the landing door lock in all cases where the car is at the height of the floor, but prevents the car from opening when it is fixed between the two floors.

Claims (5)

In the coupling device between the car door and the landing door of the elevator having safety of opening, A deformable assembly in the form of an articulated parallelogram having two longitudinal plates 12, 12 ₁ , an inverted T-shaped upper bar 32 and a lower bar 34, A pre-tensioned spring 44 whose end is attached to one plate and a support plate to return the deformable assembly towards the separated position, Two longitudinal rods 48, 48 ₁ consisting of structural bars comprising an L-shaped section with a flat wing 49 and a curved wing 51, Mounted to rotate on the support plate 40 and retracted by the stop means 53, 53 _{1 of} one or the other rod 48, 48 ₁ when the rod is introduced into its operating position, which is the position at which the car door is fastened. A car door locking mechanism 61 that can be pivoted between an unlocked position being released and a lock position to recover a normal state when the rod is in the equilibrium position, The two bars are mounted to pivot about a center on a support plate 40 parallel to each other and attached to the top of the car door 42 and the center of the T-shaped bar is connected to drive the mechanism 83 for the car door. The deformable assembly can be moved between a position in which the plates are adjacent to each other and a position in which the plates are separated, wherein the rods are taken from the position separated from each other between equilibrium positions, which are taken under the action of their own weight and are closer to each other. From the plate with curved wings turned towards each other by articulating means of the floats 52, 54, 52 ₁ , 54 _{1 in} the form of articulated parallelograms which allow the rods to move individually from one another. Floating device, characterized in that some stopping means (53, 53 ₁ ) are formed on the rod. The floating plate (52) according to claim 1, wherein the floating means comprises two floating bars (52, 54) jointed from the ends (55, 59) of the floating means to the upper and lower ends of the rod for each rod. A support pin (56, 58) of the other end of the floating means received in an elliptical hole (60, 62) perforated in) and pivoted in a hole drilled in the rod. 3. The elliptical hole (60, 62) of claim 2, wherein the pins (56, 58) of the bar are attached to the plate (12) when the rod (48) is attached to the plate (12) by two floating bars (52, 54). Suspended under its own weight at a low position stopped against the bottom end of the elliptical hole, and can be separated from this position into an operating position by pressing the rod until the pins 56, 58 stop against the upper end of the elliptical hole. And an inclined direction so that the stop portion (53) supported by the rod during this movement is configured to pivot the lock release mechanism (61) to unlock the car door (42). 4. The engagement according to claim 3, wherein when the engagement device is extended, the rods 48, 48 ₁ are pushed back to the operating position by rollers 110, 116 with landing door locks 106. Device. 4. The distance d measured in the horizontal direction between the rollers 110, 116 is greater than the distance d ₁ between adjacent edges of the plates 12, 12 ₁ when the coupling device is closed, A coupling device characterized in that it is less than a distance d ₂ separating the adjacent edges of the plates when the coupling devices are moved individually.