Novel elevator light curtain

Abstract

The utility model provides a novel elevator light curtain, which relates to the technical field of elevator accessories, and comprises a car, a light curtain assembly, a frame, a groove and a side plate, one side of the groove is internally provided with a first transmitting end, the other side of the groove is internally provided with a first receiving end matched with the first transmitting end, the inner side of the upper end of the groove is provided with a second receiving end, and the inner side of the lower end of the groove is provided with a third receiving end matched with the second receiving end. A colorless and transparent sleeve with two open ends is arranged at the lower end of the frame and located between the two side plates, the sleeve is connected with the frame through a bearing, a gear ring is arranged on the outer surface of one end of the sleeve, the elevator light curtain further comprises a motor, a gear meshed with the outside of the gear ring is arranged at the output end of the motor, and a second transmitting end is arranged in the sleeve. Whether objects enter and exit from the lift car or not can be detected in the transverse direction and the longitudinal direction, and therefore the safety of carrying transparent and thin objects and common glass carrying can be improved, and accidents caused by accidental closing of an elevator door are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator accessory technical field, concretely is a novel elevator light curtain. BACKGROUND

[0002] The elevator light curtain is a kind of elevator door safety protection device made by photoelectric sensing principle, applicable to all elevators, protects the safety of elevator passenger, and the elevator light curtain device is composed of infrared emitter and receiver and special flexible cable installed on the two sides of elevator car door.Emitter can emit infrared detection beam in turn, and receiver cyclically detects these light beams, thereby forming several tens to hundreds of infrared protection light curtains on the plane of elevator car door.

[0003] Because the existing elevator light curtain is located on the two doors of elevator, when carrying transparent glass into elevator, elevator light curtain cannot effectively identify transparent glass, and carrying personnel sometimes forget to shield elevator light curtain, leading to the occurrence of elevator accident. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of novel elevator light curtain, to solve the problems mentioned in the above background technique.

[0005] To achieve the above object, the utility model adopts the following technical scheme: the novel elevator light curtain, including car and light curtain assembly installed on car, the light curtain assembly includes the frame of U type, the inside of the frame is provided with recess, the lower end of the frame is provided with side plate respectively on both sides, the inside of one side of the recess is provided with emitting end one, the inside of the other side of the recess is provided with receiving end one matched with emitting end one, the inside of the upper end of the recess is provided with receiving end two, the lower end of the frame and between the two side plates are provided with the sleeve of colorless transparent and two ends opening, the sleeve and frame are connected by bearing, the outer surface of one end of the sleeve is provided with gear ring, further include motor, the output of the motor is provided with gear engaged with the outer gear ring, the inside of the sleeve is provided with emitting end two.

[0006] Preferably, the recess is provided with a protective plate on both sides and top side, the protective plate is made of colorless transparent material.

[0007] Preferably, the protective plate and the material of sleeve are modified cyclic olefin copolymer.

[0008] Preferably, the sleeve and side plate exist interval.

[0009] Preferably, the upper side of the sleeve is lower than the upper surface of side plate.

[0010] The utility model has the advantages of:

[0011] The elevator light curtain can detect whether objects enter or exit the car in the transverse and longitudinal directions, thereby improving the safety of carrying transparent and thin objects, such as carrying glass, and reducing accidents caused by accidental closing of the elevator door. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic diagram of the embodiment of the utility model.

[0013] Figure 2 It is a position schematic diagram of the side plate and the sleeve.

[0014] Figure 3 It is a schematic diagram of the light curtain assembly being installed on the car.

[0015] Figure 4 It is a partial sectional view of the car.

[0016] In the drawing: 1, car; 2, frame; 3, side plate; 4, transmitting end one; 5, receiving end one; 6, receiving end two; 7, sleeve; 8, bearing; 9, gear ring; 10, motor; 11, gear; 12, transmitting end two; 13, protective plate. DETAILED DESCRIPTION

[0017] The specific embodiment of the utility model is further explained below in combination with the drawings.

[0018] As Figures 1-4 shown, a novel elevator light curtain comprises a car 1 and a light curtain assembly installed on the car 1, the light curtain assembly comprises a U-shaped frame 2, the inner side of the frame 2 is provided with a groove, the lower end of the frame 2 is provided with a side plate 3 on each side, the inner side of one side of the groove is provided with a transmitting end one 4, the inner side of the other side of the groove is provided with a receiving end one 5 matched with the transmitting end one 4, the inner side of the upper end of the groove is provided with a receiving end two 6, the lower end of the frame 2 and between the two side plates 3 is provided with a colorless transparent sleeve 7 with open ends, the sleeve 7 and the frame 2 are connected through a bearing 8, the outer surface of one end of the sleeve 7 is provided with a gear ring 9, further comprising a motor 10, the output end of the motor 10 is provided with a gear 11 engaged with the outer surface of the gear ring 9, and the inner side of the sleeve 7 is provided with a transmitting end two 12.

[0019] The car 1 is not a solid structure, but is processed by welding and bolt connection of a steel plate and a metal support, when the car 1 is processed, a mounting groove for installing the light curtain assembly is needed, in the embodiment, the light curtain assembly for preventing clamping is installed on the car 1 instead of the traditional elevator door, the distance between the light curtain assembly installed on the traditional elevator door and the light curtain assembly installed on the car 1 is less than 5 cm, so as to reduce the influence of the change of the installation position of the light curtain assembly on the user.

[0020] The transmitter one 4 and the transmitter two 12 are infrared transmitters, and the receiver one 5 and the receiver two 6 are infrared receivers. Under normal circumstances, whether the transmitter one 4 and the receiver one 5 are blocked or the transmitter two 12 and the receiver two 6 are blocked, the elevator door will not be closed when the infrared signal is blocked before the elevator door is completely closed, and the elevator door will be changed from the closed state to the open state during the closing process to highlight the anti-pinch effect.

[0021] When two people carry the transparent glass into the car 1 one after another, the glass is generally in a vertical state or at an angle, and the angle is generally less than 15°. Since the infrared light emitted by the transmitter one 4 can normally penetrate the glass and be received by the receiver one 5, the elevator door will still be automatically closed after being opened for a certain time even if the glass does not pass through the elevator door, which exists a great safety hazard. The infrared light emitted by the transmitter two 12 located below can be blocked by the side edge of the glass, so that the receiver two 6 located above cannot completely receive the infrared light emitted by the transmitter two 12, that is, the side edge of the glass blocks part of the infrared light emitted by the transmitter two 12, indicating that an object is entering the car 1. At this time, the elevator door will not be closed until the side edge of the glass does not block the infrared light emitted by the transmitter two 12, which means that the glass has completely entered the car 1, and the elevator door can be normally closed.

[0022] At the same time, the inner bottom surface of the car 1 is flush with the upper surface of the side plate 3, and the upper side of the sleeve 7 is lower than the upper surface of the side plate 3. When entering or exiting the elevator, the shoes will not directly step on the sleeve 7, which is conducive to keeping the surface of the sleeve 7 clean. At the same time, when it rains, some rainwater will be carried on the shoes, which will drop on the surface of the sleeve 7, causing dirt on the surface of the sleeve 7. However, since the sleeve 7 is cylindrical, the rainwater will flow to both sides of the sleeve 7, and the installation groove in the car 1 is through, so the rainwater can directly drop out and will not accumulate in the installation groove in the car 1. At the same time, the motor 10 can be started to drive the gear 11 to rotate, and the gear 11 drives the sleeve 7 to rotate through the transmission of the gear 11 and the gear ring 9. When the sleeve 7 rotates, it is difficult for rainwater to adhere to the surface of the sleeve 7, so that the infrared light emitted by the transmitter two 12 can be received by the receiver two 6. At the same time, when the sleeve 7 rotates, the person in charge of cleaning can wipe the surface of the sleeve 7 with a flexible face to keep the surface of the sleeve 7 clean and also to remove the dust on the surface of the sleeve 7.

[0023] The sleeve 7 only rotates when the elevator door is opened and not completely closed. When the elevator door is completely closed, the sleeve 7 stops rotating.

[0024] The second emission end 12 is directly fixed on the car 1, and the sleeve 7 is sleeved outside the second emission end 12, the position of the second emission end 12 is fixed after being installed, and the sleeve 7 is used for protecting the second emission end 12.

[0025] Further, the two sides and the top side of the groove are provided with protection plates 13, the protection plates 13 are made of colorless and transparent materials, the first emission end 4, the first receiving end 5 and the second receiving end 6 in the groove are protected through the protection plates 13, and hard objects are prevented from directly bumping the above-mentioned components.

[0026] Further, the protection plates 13 and the sleeve 7 are made of modified cyclic olefin copolymer, the modified cyclic olefin copolymer has excellent ultraviolet resistance and moisture resistance, is not easy to age, yellow or become brittle due to long-term exposure, has a relatively low refractive index of about 1.53, and infrared light vertically passes through the sleeve 7, so that the second receiving end 6 can accurately and effectively receive the signal of infrared light emitted by the second emission end 12.

[0027] Further, there is a gap between the sleeve 7 and the side plate 3, impurities are prevented from being accumulated between the sleeve 7 and the side plate 3, the impurities can fall out through the gap between the sleeve 7 and the side plate 3, and when larger impurities fall between the sleeve 7 and the side plate 3, a person in charge of cleaning can suck out the impurities through a dust collector or the like.

[0028] In the description of the utility model, unless another definite provision and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be two element inside communication. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model.

Claims

1. A novel elevator light curtain, characterized in that, The application relates to a car and a light curtain assembly installed on the car, wherein the light curtain assembly comprises a U-shaped frame, the inner side of the frame is provided with a groove, the lower end of the frame is provided with side plates on both sides, the inner side of one side of the groove is provided with a transmitting end one, the inner side of the other side of the groove is provided with a receiving end one matched with the transmitting end one, the inner side of the upper end of the groove is provided with a receiving end two, the lower end of the frame between the two side plates is provided with a colorless and transparent sleeve with both ends being open, the sleeve is connected with the frame through a bearing, the outer surface of one end of the sleeve is provided with a gear ring, a motor is further arranged, the output end of the motor is provided with a gear engaged with the gear ring outside, and the inner side of the sleeve is provided with a transmitting end two.

2. The novel elevator light curtain according to claim 1, characterized in that, The two sides and the top side of the groove are provided with protective plates, and the protective plates are made of colorless and transparent materials.

3. The novel elevator light curtain according to claim 2, characterized in that, The materials of the protective plates and the sleeve are modified cyclic olefin copolymer.

4. The novel elevator light curtain according to claim 1, characterized in that, The sleeve and the side plates are spaced.

5. The novel elevator light curtain according to any one of claims 1-4, characterized in that, The upper side of the sleeve is lower than the upper surface of the side plates.

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