Embedded light curtain of elevator without car door

Abstract

The utility model provides an embedded light curtain of a car-door-free elevator, the embedded light curtain comprises a light curtain assembly, the light curtain assembly is integrally embedded in a light curtain mounting profile, the light curtain mounting profile is mounted on the side edge of a door frame, the light curtain assembly comprises a shell, an emitter and a receiver, the emitter and the receiver are both fixed in the shell, and the shell is provided with a light source. The shell provided with the emitter and the shell provided with the receiver are oppositely arranged on the two sides of the door frame. One end of the light curtain installation profile is connected with the profile of the door frame, and the other end of the light curtain installation profile accommodates the installation shell. According to the light curtain assembly, the emitter and the receiver are both installed in the shell, the shell is arranged to be in a long strip shape along with the thickness of the door frame, the emitter and the receiver work in an opposite and matched mode, when the emitter and the receiver are oppositely arranged on the two sides of the door frame, a working area within the range of the door frame is formed, and the requirement of a car-door-free elevator is met.

Description

Technical Field

[0001] This invention relates to a light curtain structure design for elevators, specifically an embedded light curtain for a car-doorless elevator. Background Technology

[0002] An elevator light curtain is a safety device on elevator doors. It mainly uses light curtain devices to emit and receive light signals to determine whether there are obstacles within the door frame. Under the premise of ensuring safety, it closes the elevator door and moves the elevator car. Therefore, the light curtain needs to be hidden and fixed in the elevator door. In elevators without car doors, the light curtain needs to be inside the door frame. Usually, the structural foundation space of the door frame is small, and conventional light curtain structures are inconvenient to install, and may even be larger than the foundation space, which cannot make the light curtain effective. Therefore, a new light curtain structure is needed. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings in the prior art and to provide an embedded light curtain for a car-doorless elevator.

[0004] The technical solution adopted by this invention to solve the above problems is as follows: An embedded light curtain includes a light curtain assembly, which is installed in a light curtain mounting profile. The light curtain mounting profile is installed on the side of the door frame. The light curtain assembly includes a housing, a transmitter, and a receiver. The transmitter and receiver are both fixed in the housing. The housing containing the transmitter and the housing containing the receiver are positioned opposite each other on both sides of the door frame. One end of the light curtain mounting profile is connected to the profile of the door frame, and the other end accommodates the mounting housing. The light curtain assembly installs both the transmitter and receiver in the housing. The housing is elongated to follow the thickness of the door frame. The transmitter and receiver cooperate to work together. When positioned opposite each other on both sides of the door frame, a working area is formed within the door frame, adapting to the requirements of elevators without car doors.

[0005] Furthermore, the housing is shaped in cross-section into a component receiving cavity and a light strip slot. The transmitter and receiver are installed in the component receiving cavity, and a light strip is embedded in the light strip slot. The light strip, transmitter, and receiver are all connected to a control box, which is connected to the elevator control bus. Different mounting slots are provided on the housing. The component receiving slot is the main mounting space, where the transmitter or receiver is placed. The light strip slot contains a light-emitting light strip, which can be controlled to serve as a safety reminder for the light curtain component. When the light curtain senses an obstacle, it will flash as a warning. Additionally, it can be used for decorative lighting.

[0006] Furthermore, connecting ears are fixed at both ends of the housing, and mounting holes are provided on the connecting ears. Screws are inserted through the mounting holes to fix the housing to the bottom of the groove of the light curtain mounting profile. The mounting holes on the connecting ears can be elongated holes for short-distance adjustment of the installation position. The connecting ears also serve as end caps of the housing, sealing both ends of the housing.

[0007] Furthermore, the light curtain mounting profile has a door frame connector and a light curtain recess formed in its cross-section. The door frame connector is installed by mating with the door frame, and the light curtain recess is formed into a groove-shaped structure corresponding to the width of the housing. A buckle is formed at the outer end of the groove-shaped structure, and the buckle is fastened to the outer edge of the housing. The door frame connector is connected to the side of the door frame, and the light curtain recess forms a three-sided enclosed structure, which also has the function of isolating light and improving the sensing accuracy of the light curtain. The width of the light curtain mounting profile itself is controllable and has structural flexibility, making the light curtain assembly easy to install and adaptable to the width requirements of the door frame.

[0008] Furthermore, the light curtain mounting profile is integrally pressed from aluminum profiles, forming a long strip structure with a consistent cross-sectional shape. The light curtain mounting profile is made by sequentially extruding aluminum, resulting in good structural strength and a lightweight overall structure that does not increase the load on the elevator.

[0009] Compared with the prior art, the present invention has the following advantages and effects: This design is an improvement on the light curtain structure of a car-doorless elevator. It is a light curtain structure that can be directly installed on the edge of the door frame, which meets the design requirements of the car-doorless structure and can provide sensing function for the entire door opening area of ​​the elevator, thus ensuring the safety of the car-doorless elevator. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the light curtain assembly.

[0011] Figure 2 This is a schematic diagram of the cross-sectional structure of the light curtain component housing.

[0012] Figure 3 This is a schematic diagram of the light curtain assembly on the door frame.

[0013] Figure 4 This is a schematic diagram of the cross-sectional structure of the light curtain assembly on the door frame.

[0014] In the diagram: 1. Light curtain assembly, 2. Light curtain mounting profile, 3. Door frame, 4. Housing, 5. Light strip slot, 6. Assembly cavity, 7. Connecting ear, 8. Mounting hole, 9. Screw, 10. Door frame connector, 11. Light curtain recess, 12. Clip. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0016] An embedded light curtain for a car-doorless elevator includes a light curtain assembly 1, which is installed in a light curtain mounting profile 2. The light curtain mounting profile 2 is installed on the side of a door frame 3. The light curtain assembly 1 includes a housing 4, a transmitter, and a receiver. The transmitter and receiver are both fixed in the housing 4. The housing 4 with the transmitter and the housing 4 with the receiver are arranged opposite each other on both sides of the door frame 3. One end of the light curtain mounting profile 2 is connected to the profile of the door frame 3, and the other end accommodates the mounting housing 4.

[0017] The housing 4 is formed in cross-section as a component receiving cavity 6 and a light strip slot 5. The transmitter and receiver are installed in the component receiving cavity 6, and a light strip is embedded in the light strip slot 5. The light strip, transmitter, and receiver are all connected to the control box, which is connected to the elevator control bus.

[0018] The housing 4 is fixed with connecting ears 7 at both ends. The connecting ears 7 are provided with mounting holes 8. Screws 9 are inserted through the mounting holes 8 to fix the housing 4 to the bottom of the groove of the light curtain mounting profile 2.

[0019] The light curtain mounting profile 2 has a door frame joint 10 and a light curtain groove 11 formed on its cross section. The door frame joint 10 is installed by connecting with the door frame 3. The light curtain groove 11 is formed into a groove-shaped structure corresponding to the width of the housing 4. A buckle 12 is formed at the outer end of the groove-shaped structure. The buckle 12 is fastened to the outer edge of the housing 4.

[0020] The light curtain mounting profile 2 is an integrally pressed aluminum profile, and has a long strip structure with a consistent cross-sectional shape.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative rather than restrictive in all respects, and the scope of the invention is defined by the claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description method is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An embedded light curtain for a car-doorless elevator, characterized in that: The embedded light curtain includes a light curtain assembly (1), which is installed in an integral embedded light curtain mounting profile (2). The light curtain mounting profile (2) is installed on the side of the door frame (3). The light curtain assembly (1) includes a housing (4), a transmitter, and a receiver. The transmitter and receiver are both fixed in the housing (4). The housing (4) with the transmitter and the housing (4) with the receiver are arranged opposite to each other on both sides of the door frame (3). One end of the light curtain mounting profile (2) is connected to the profile of the door frame (3), and the other end accommodates the mounting housing (4).

2. The embedded light curtain for a car-less elevator according to claim 1, characterized in that: The housing (4) is formed in cross section as a component receiving cavity (6) and a light strip slot (5). The transmitter and receiver are installed in the component receiving cavity (6), and a light strip is embedded in the light strip slot (5). The light strip, transmitter, and receiver are all connected to the control box, which is connected to the elevator control bus.

3. The embedded light curtain for a car-less elevator according to claim 2, characterized in that: The housing (4) has connecting ears (7) fixed at both ends. The connecting ears (7) are provided with mounting holes (8). Screws (9) are inserted into the mounting holes (8) and the housing (4) is fixed to the bottom of the groove of the light curtain mounting profile (2).

4. The embedded light curtain for a car-less elevator according to claim 1, characterized in that: The light curtain mounting profile (2) has a door frame joint (10) and a light curtain groove (11) formed on its cross section. The door frame joint (10) is installed in conjunction with the door frame (3). The light curtain groove (11) is formed into a groove structure corresponding to the width of the shell (4). A buckle (12) is formed at the outer end of the groove structure. The buckle (12) is fastened to the outer edge of the shell (4).

5. The embedded light curtain for a car-less elevator according to claim 1, characterized in that: The light curtain mounting profile (2) is an integrally pressed aluminum profile with a long strip structure of consistent cross-sectional shape.

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