CN211470488U - Light curtain and safety contact edge combined type anti-clamping safety protection device - Google Patents

Abstract

The utility model discloses a light curtain and safe contact limit modular prevent pressing from both sides safety arrangement relates to door safety protection technical field, include: a light curtain generator mounted on the first support; a light curtain detector installed at a position of the second bracket where the light curtain can be detected; the first bracket is arranged on one door with two doors capable of relatively moving horizontally for opening and closing; the second bracket is arranged on the other door leaf and comprises a concave groove for accommodating the safe contact edge when the two door leaves are closed; and the safety contact edge is arranged at the position, corresponding to the concave groove, of the first support and is used for detecting the contacted tiny obstacles. The utility model has the advantages of can detect slight barrier in full height within range optional position.

Description

Light curtain and safety contact edge combined type anti-clamping safety protection device

Technical Field

The utility model relates to a door safety protection technical field, concretely relates to light curtain and safe touch edge combined type prevent pressing from both sides safety arrangement, especially relate to and can detect tiny barrier in elevator car door or electric door full length within range any position, including barriers such as flexible rope (detectable obstacle object < 2 mm), elevator or electric door can safe and reliable's shutdown when guaranteeing people or tiny barrier centre gripping elevator car door or electric door.

Background

The anti-pinch safety detection of the existing elevator car door or electric door is realized by adopting a light curtain detection mode. For example, chinese utility model patent publication No. CN202880639U discloses a two-in-one light curtain, which comprises a light curtain body, and further comprises a controller, a detection circuit, a safety touch panel and a conversion circuit, wherein the input end of the detection circuit is connected to the output end of the light curtain body, the output end of the detection circuit is connected to the input end of the microprocessor, and the output end of the microprocessor is connected to the input end of the safety touch panel after being connected to the conversion circuit in series.

Due to the fact that the detection blind area of the light curtain and the identification precision of the tiny barriers are not enough, the tiny barriers similar to dog leashes cannot be detected in the operation process of the elevator car door or the electric door, and safety accidents of elevator operation are easily caused.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a technical problem who solves lies in overcoming elevator car door or electrically operated gate among the prior art and having the detection blind area and can't effectively evade tiny barrier and cause accident's defect easily to provide a light curtain and the modular safety protection device that prevents pressing from both sides of safe contact limit that can detect tiny barrier in elevator car door or electrically operated gate full altitude within range optional position, further the device still installs convenient to use, dependable performance, can self-diagnose the detection part trouble, guarantee to taking advantage of elevator people's personal safety.

Therefore, the utility model discloses a light curtain and safe contact limit combined type prevent pressing from both sides safety arrangement, include:

a light curtain generator mounted on the first support for generating and emitting a light curtain;

the light curtain detector is arranged at the position of the second bracket, where the light curtain can be detected, and is used for detecting the light curtain emitted by the light curtain generator;

the first bracket is arranged on one door with two doors capable of relatively moving horizontally for opening and closing;

the second bracket is arranged on the other door leaf and comprises a concave groove for accommodating the safe contact edge when the two door leaves are closed; and

and the safety contact edge is arranged at the position of the first support corresponding to the concave groove and used for detecting the contacted tiny barriers.

Preferably, the safety touch edge is made of a flexible polymer composite material.

Preferably, the light curtain protection device further comprises a first light curtain protection window;

the first light curtain protection window is arranged on the first support and is positioned above the light curtain emitting opening of the light curtain generator.

Preferably, a second light curtain protection window is further included;

the second light curtain protection window is arranged on the second support and is positioned above the detection port of the light curtain detector.

Preferably, the method further comprises the following steps: a light curtain generation/detection controller;

the light curtain generation/detection controller is respectively connected with the light curtain generator and the light curtain detector and is used for controlling the light curtain generator to generate and output a light curtain and controlling the light curtain detector to detect the light curtain.

Preferably, the method further comprises the following steps: a safety edge-touching detection controller;

the safety touch edge detection controller is connected with the safety touch edge and used for controlling and detecting signals output by the safety touch edge.

The utility model discloses light curtain and safe touching limit combination formula prevent pressing from both sides safety arrangement's technical scheme has following advantage:

1. the function of light curtain detection is reserved.

2. The detection to tiny barrier can be implemented in the optional position of light curtain blind area, guarantees the operation safety of elevator, prevents accident to passenger's injury.

3. When the light curtain is damaged or fails, the safety touch edge can still independently detect the existence of the barrier, and the running safety of the elevator is ensured.

4. The safety contact edge is damaged, the controller can send out a fault instruction, and the reliable operation of the safety protection system is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a specific example of a combined light curtain and safety contact edge anti-pinch safety protection device according to an embodiment of the present invention;

FIG. 2 is an installation diagram of a flat door light curtain and a safety contact edge combined anti-pinch safety protection device in an embodiment of the present invention;

FIG. 3 is a schematic view of the working state of the flat door light curtain and safety contact edge combined anti-pinch safety protection device in the embodiment of the present invention;

FIG. 4 is an installation diagram of the combined anti-pinch safety protection device of the light curtain of the rabbet door and the safety contact edge in the embodiment of the present invention;

FIG. 5 is a schematic view of the working state of the combined anti-pinch safety protection device of the light curtain of the rabbet door and the safety contact edge in the embodiment of the present invention;

fig. 6 is the embodiment of the utility model provides an embodiment light curtain and safety contact limit combined type prevent pressing from both sides safety arrangement's circuit schematic diagram.

Reference numerals: the system comprises a light curtain generator 1, a light curtain detector 2, a first light curtain protection window 3, a second light curtain protection window 4, a first support 5, a second support 6, a concave groove 61, a safe touch edge 7, a door 8, an obstacle 9, a light curtain generation/detection controller 10 and a safe touch edge detection controller 20.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In describing the present invention, it is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and/or "comprising," when used in this specification, are intended to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

This embodiment provides a light curtain and safe contact limit modular prevent pressing from both sides safety arrangement, as shown in fig. 1, include: the light curtain detector comprises a light curtain generator 1, a light curtain detector 2, a first bracket 5, a second bracket 6 and a safety contact edge 7;

the light curtain generator 1 is mounted on the first support 5 for generating and emitting a light curtain; the light curtain detector 2 is arranged at the position of the second bracket 6, which can detect the light curtain, and the light curtain detector 2 is arranged opposite to the light curtain generator 1 and is used for detecting the light curtain emitted by the light curtain generator 1; the first bracket 5 is installed on one door with two doors capable of relatively translating for opening and closing, for example, one door can translate, the other door is fixed, or both doors can translate; the second bracket 6 is arranged on the other door leaf, the second bracket 6 comprises a concave groove 61 and is used for accommodating the safety contact edge 7 when the two door leaves are closed, and the safety contact edge 7 is arranged in the concave groove 61 without deformation; the safety contact edge 7 is installed at a position of the first bracket 5 corresponding to the concave groove 61 for detecting a contacted fine obstacle. The concave groove 61 and the safety contact edge 7 are respectively positioned at one side of the light curtain detector 2 and the light curtain generator 1, and the installation position of the concave groove and the safety contact edge does not obstruct the light curtain detection. In operation, the safety margin can detect rigid or flexible obstacles (such as ropes and the like) of < 2mm when the elevator car door or the motor-driven door is closed. Different elevator car doors or electrically operated doors can design the mounting bracket of different mounting modes as required to satisfy the design of different elevator car doors or electrically operated doors.

Above-mentioned light curtain and safe touch limit combination formula prevent pressing from both sides safety arrangement, it forms to prevent pressing from both sides the safety arrangement combination through two unifications by light curtain and safe touch limit combination, two unifications protect the theory and are applied to the elevator car door or the electric door when closing and prevent pressing from both sides the safety arrangement, use the isolated safeguard function of isolation safeguard function and touch sensor's of light curtain non-isolated safeguard function, realize the safeguard function of the tiny barrier of full marginal zero clearance monitoring of elevator car door or electric door, can guarantee to take advantage of elevator people or tiny barrier and can both in time detect when elevator car door or electric door close the touching, thereby can stop the operation of elevator, prevent that the elevator from moving produced bodily injury because of not surveying people or tiny barrier. The first bracket and the second bracket are arranged on a needed door, so that the installation and the use are convenient, and the performance is reliable.

Preferably, the safety touch edge 7 is made of a flexible polymer composite material, has the characteristics of small trigger force, small trigger distance and zero-clearance continuous trigger, and effectively solves the problems of light curtain detection dead zone and insufficient induction precision.

Preferably, the light curtain and safety contact edge combined anti-pinch safety protection device, as shown in fig. 1, further includes a first light curtain protection window 3 and a second light curtain protection window 4;

the first light curtain protection window 3 is arranged on the first bracket 5, is positioned above the light curtain emitting opening of the light curtain generator 1 and is used for protecting the light curtain generator 1; the second light curtain protection window 4 is installed on the second bracket 6, located above the detection port of the light curtain detector 2, and used for protecting the light curtain detector 2.

Fig. 2 and 3 are schematic views showing installation and working states of a flat door light curtain and a safety contact edge combined anti-pinch safety protection device, fig. 2 shows a normal closing state of a door without an obstacle, and fig. 3 shows a working state with a tiny obstacle. When a tiny obstacle which cannot be identified by the light curtain is clamped in the door gap, the tiny obstacle touches the safety touch edge, the safety touch edge detection circuit generates and outputs signals, the safety touch edge detection circuit is used for stopping closing the door and opening the door, and the elevator car door or the electric door is opened. When no obstacle exists, the elevator car door or the electric door is closed, and the safety contact edge is inserted into the concave groove in the opposite second support to safely operate.

Fig. 4 and 5 are schematic views showing installation and working states of the combined type anti-pinch safety protection device of the light curtain of the rabbet door and the safety contact edge, fig. 4 shows a normal closing state of the door when no obstacle exists, and fig. 5 shows a working state when a tiny obstacle exists. Different from a flat door, when the tiny barrier is a rigid body, the clamping part formed at the foremost end of the two car doors or the electric door firstly triggers the safety contact edge, so that the door closing operation is stopped. If the small barriers are flexible objects, the flexible barriers trigger the safety contact edges when the two doors are closed to the embedding opening part, so that the door closing operation is stopped.

Preferably, as shown in fig. 6, the combined light curtain and safety contact edge anti-pinch safety protection device further includes: a light curtain generation/detection controller 10 and a safety touch edge detection controller 20;

the light curtain generation/detection controller 10 is respectively connected with the light curtain generator 1 and the light curtain detector 2 and used for controlling the light curtain generator 1 to generate and output a light curtain and controlling the light curtain detector 2 to detect the light curtain, if a barrier blocks the light curtain, the light curtain detected by the light curtain detector generates and outputs a light blocking signal after being blocked, the light curtain generation/detection controller outputs a corresponding first blocking signal to the door controller after detecting the light blocking signal, and the door controller generates a control signal after receiving the first blocking signal to stop the elevator and open the door.

The safety touch edge detection controller 20 is connected with the safety touch edge 7 and used for controlling and detecting signals output by the safety touch edge 7, if a small obstacle touches the safety touch edge, the safety touch edge generates and outputs a touch signal, the safety touch edge detection controller 20 outputs a corresponding second blocking signal to the door controller after detecting the touch signal, and the door controller receives the second blocking signal and then generates a control signal to stop the elevator and open the door.

As the supplement of the light curtain of the isolation protection, the safety touch edge of the non-isolation protection can realize the detection of the obstacle object which is not captured by the light curtain. The signal that the safety touches limit and detects on the full edge produces first signal of blockking through the safety touches limit and detects the controller and produce/detect the second signal of blockking that the controller produced and export to the door controller after the superposition to make the elevator stop in order to ensure the safe operation of elevator.

Preferably, the safety touch edge detection controller 20 includes a self-diagnosis circuit, the self-diagnosis circuit includes an upper and lower limit comparison circuit, the upper and lower limit comparison circuit determines that the safety touch edge protection function is invalid and the safety touch edge is damaged when receiving the safety touch edge output impedance signal of 0 and infinity, and generates and outputs a failure signal to the door controller, which will send a failure command to improve the reliability of safety protection.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (6)

1. The utility model provides a light curtain and safe contact limit combination formula prevent pressing from both sides safety arrangement which characterized in that includes:

a light curtain generator (1) mounted on the first support (5) for generating and emitting a light curtain;

the light curtain detector (2) is arranged at the position of the second bracket (6) where the light curtain can be detected and is used for detecting the light curtain emitted by the light curtain generator (1);

the first bracket (5) is arranged on one door with two doors capable of relatively moving horizontally for opening and closing;

the second support (6) is arranged on the other door leaf, and the second support (6) comprises a concave groove (61) for accommodating the safe contact edge (7) when the two door leaves are closed; and

and the safety contact edge (7) is arranged at the position, corresponding to the concave groove (61), of the first support (5) and is used for detecting the contacted tiny obstacles.

2. The light curtain and safety contact edge combined anti-pinch safety protection device as claimed in claim 1, characterized in that the safety contact edge (7) is made of a flexible polymer composite material.

3. The combined light curtain and safety curb clamping-resistant safety protection device of claim 1, further comprising a first light curtain shield window (3);

the first light curtain protection window (3) is arranged on the first support (5) and is positioned above the light curtain emitting opening of the light curtain generator (1).

4. The light curtain and safety haptic combined anti-pinch safety protection device of claim 1, further comprising a second light curtain shield window (4);

the second light curtain protection window (4) is arranged on the second support (6) and is positioned above the detection port of the light curtain detector (2).

5. The light curtain and safety contact edge combined anti-pinch safety protection device of claim 1, further comprising: a light curtain generation/detection controller (10);

the light curtain generation/detection controller (10) is respectively connected with the light curtain generator (1) and the light curtain detector (2) and used for controlling the light curtain generator (1) to generate and output a light curtain and controlling the light curtain detector (2) to detect the light curtain.

6. The light curtain and safety contact edge combined anti-pinch safety protection device as claimed in any one of claims 1 to 5, further comprising: a safety contact edge detection controller (20);

the safety contact edge detection controller (20) is connected with the safety contact edge (7) and used for controlling and detecting signals output by the safety contact edge (7).

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