Wireless anti-pinch device

Abstract

The invention belongs to the field of construction hoists, and provides a wireless anti-pinch device for a cage door of a construction hoist, the wireless anti-pinch device comprises a trigger module, a receiving module, a mounting seat, a cam module, a movable plate module and a spring, the movable plate module is mounted on the edge of a bottom frame of the cage door through the spring, and the mounting seat is fixed in the bottom frame of the cage door; a trigger module and a cam module are mounted on the mounting seat, one end of the cam module is connected with the movable plate module, when the cage door touches a person or an object when the cage door is closed, the movable plate module is pressed to drive the cam module to rotate, the cam module extrudes the trigger module, the trigger module transmits a signal to the receiving module, and the receiving module transmits the signal to the elevator control system. And the control system controls the cage door to stop running and open the cage door, so that the risk of clamping people or objects is avoided. The device is simple in structure, convenient to install, capable of effectively achieving the contact anti-pinch function of the cage door and high in reliability.

Description

Technical Field

[0001] This invention belongs to the field of construction hoists, and particularly relates to a wireless anti-pinch device for the cage door of a construction hoist. Background Technology

[0002] Construction hoists, widely used in the construction engineering field for transporting personnel and goods, are mainly used in the construction of high-rise buildings (interior and exterior decoration), bridges, chimneys, and other projects. Intelligent construction hoists, equipped with automatic opening and closing cage doors, require contact-type anti-pinch devices. Existing contact-type anti-pinch devices generally employ two methods: safety edge and trapezoidal module limiting. Both require power and signal transmission via cables. In practical applications, cable routing is cumbersome, and cables are prone to breakage when the door moves, resulting in inconvenient installation and a high failure rate. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a wireless anti-pinch device. This device has a simple structure, reasonable design, and is easy to install. It can effectively realize the anti-pinch function of the cage door and has high reliability.

[0004] The objective of this invention is achieved through the following technical measures: a wireless anti-pinch device, comprising a trigger module, a receiving module, a mounting base, a cam module, a flap module, and a spring. The flap module is mounted on the bottom edge of the cage door via the spring. The mounting base is fixed inside the bottom edge of the cage door. The trigger module and the cam module are mounted on the mounting base. One end of the cam module is connected to the flap module. When the cage door closes and encounters a person or object, the flap module is pressed, causing the cam module to rotate. The cam module squeezes the trigger module, which transmits a signal to the receiving module. The receiving module sends the signal to the elevator control system, which then controls the cage door to stop and open, thus avoiding the risk of trapping people or objects.

[0005] Furthermore, the flap module includes a contact body, guide rods, and connecting rods. The contact body has the same shape as the bottom frame edge of the cage door. The contact body is provided with several guide rods, and the guide rods are fitted with springs. During installation, the contact body is pressed onto the bottom frame of the cage door by the springs and is lower than the edge of the bottom frame. When the contact body is pressed, it retracts into the bottom frame and returns to its original position when the pressure is released. The contact body is connected to the cam module through the connecting rods, and can push the cam module to rotate when compressed.

[0006] Furthermore, the cam module includes a cam and a connecting plate. The cam has a central opening and is mounted on a rotating shaft of the mounting base, allowing it to rotate around the cam. One end of the cam is provided with a connecting plate, which has an oblong hole. The connecting rod of the flap module passes through the oblong hole and is fixed and adjusted in position by upper and lower nuts. When the flap module moves up and down, it can push the connecting plate to drive the cam to rotate.

[0007] Furthermore, the mounting base includes a base and a rotating shaft. A trigger module is mounted on the base, and a cam module is mounted on the rotating shaft. During normal operation, the cam and the trigger module are separate. When the flap module is compressed, the cam rotates and presses against the trigger module.

[0008] Furthermore, the trigger module is powered by self-generating methods such as piezoelectric ceramic under pressure or electromagnetic coil power generation, eliminating the need for an external power source. It can generate electricity and send wireless signals when under pressure.

[0009] Furthermore, the receiving module can be configured independently or integrated into the elevator control system. The receiving module can receive the wireless signal from the trigger module and transmit it to the control system.

[0010] Furthermore, the thickness of the cam can be increased, and multiple trigger modules can be arranged side by side. This way, when the cam rotates, it can compress multiple trigger modules, improving the reliability of the device.

[0011] The wireless anti-pinch device of this invention has a simple structure, reasonable design, and convenient installation. It can effectively realize the anti-pinch function of cage door contact and does not require separate power supply and signal line, thus having high reliability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the wireless anti-pinch device of the present invention.

[0013] Figure 2 This is a schematic diagram of the flexible board module structure in this invention.

[0014] Figure 3 This is a schematic diagram of the mounting base structure in this invention.

[0015] Figure 4 This is a schematic diagram of the cam module in this invention.

[0016] Figure 5 This is a schematic diagram of the installation of the present invention on a cage door.

[0017] Figure 6 This is a schematic diagram of the anti-pinch mechanism of the present invention.

[0018] In the diagram: 1. Hatch module, 2. Spring, 3. Mounting base, 4. Trigger module, 5. Cam module, 6. Receiving module, 7. Bottom frame of the cage door, 11. Trigger unit, 12. Guide rod, 13. Connecting rod, 31. Plate, 32. Rotating shaft, 51. Cam, 52. Connecting plate. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figure 1 As shown, this embodiment provides a wireless anti-pinch device, including a flap module 1, a spring 2, a mounting base 3, a trigger module 4, a cam module 5, and a receiving module 6. The trigger module 4 and the receiving module 6 can transmit information wirelessly.

[0023] like Figure 2 As shown, the flap module 1 includes a contact body 11, guide rods 12, and connecting rods 13. The contact body 11 has the same shape as the bottom frame 7 of the cage door and is generally a straight rod. Several guide rods 12 are provided on the contact body 11, and springs 2 are fitted onto the guide rods 12. During installation, the contact body 11 is pressed against the bottom frame 7 of the cage door by the springs and is lower than the edge of the bottom frame. When the contact body is compressed, it retracts into the bottom frame and returns to its original position when the pressure is released. The contact body 11 is connected to the cam module 5 via the connecting rods 13, and can push the cam module 5 to rotate when compressed.

[0024] like Figure 3 As shown, the mounting base 3 includes a base 31 and a rotating shaft 32. A trigger module 4 is mounted on the base 31, and a cam module 5 is mounted on the rotating shaft 32. During normal operation, the cam and the trigger module 4 are separate. When the flap module 1 is compressed, the cam rotates and presses against the trigger module 4.

[0025] like Figure 4As shown, the cam module 5 includes a cam 51 and a connecting plate 52. The cam 51 has a central hole and is mounted on the rotating shaft 32 of the mounting base 3, allowing it to rotate around the shaft. One end of the cam 51 is provided with the connecting plate 52, which has an oblong hole. The connecting rod 13 of the flap module passes through the oblong hole and is fixed and its position adjusted by upper and lower nuts.

[0026] like Figure 5 As shown, in this embodiment, the wireless anti-pinch device is pressed onto the bottom frame 7 of the cage door by a spring 2. The spring 2 pushes the flap module 1 downward away from the bottom frame, while the cam 51 separates from the trigger module 4.

[0027] like Figure 6 As shown, when the door closes, the flap module 1 contacts the foreign object. External force overcomes the spring force of the spring 2, pushing the flap module 1 upwards into the bottom frame 7 of the cage door. The flap module 1 drives the cam module 5 to rotate, thereby squeezing the trigger module 4. The trigger module 4, under pressure, generates its own electricity and transmits a signal to the receiving module 6. The receiving module 6 transmits the information to the control system, which then controls the cage door to stop closing and automatically open, thus preventing the cage door from further trapping people or objects. After the cage door removes the foreign object, the spring 2 pushes the flap module 1 away from the bottom frame 7 of the cage door, and simultaneously, the cam 51 separates from the trigger module 4.

[0028] In this embodiment, as Figure 6 As shown, the cam rotation is divided into two stages: triggering and holding. In the triggering stage, the cam compresses the trigger module to generate electricity and send a signal. In the holding stage, the cam continues to rotate but does not continue to compress the trigger module. This enables the cage door anti-pinch function to be triggered in the early stage of the trapdoor module being compressed, and the trapdoor module can continue to be compressed and move upward to reduce the crushing injury to people and objects.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wireless anti-pinch device, characterized in that: The system includes a trigger module, a receiving module, a mounting base, a cam module, a flap module, and a spring. The flap module is mounted on the bottom edge of the cage door via the spring. The mounting base is fixed inside the bottom edge of the cage door. The trigger module and the cam module are mounted on the mounting base. One end of the cam module is connected to the flap module. When the cage door closes and encounters a person or object, the flap module is pressed, causing the cam module to rotate. The cam module then presses against the trigger module, which sends a signal to the receiving module. The receiving module sends the signal to the elevator control system, which then controls the cage door to stop and open.

2. The wireless anti-pinch device according to claim 1, characterized in that: The flap module includes a contact body, guide rods, and connecting rods. The contact body has the same shape as the bottom frame edge of the cage door. The contact body is provided with several guide rods, and the guide rods are fitted with springs. During installation, the contact body is pressed onto the bottom frame of the cage door by the springs and is lower than the edge of the bottom frame. When the contact body is pressed, it retracts into the bottom frame and returns to its original position when the pressure is released. The contact body is connected to the cam module through the connecting rods, and can push the cam module to rotate when compressed.

3. The wireless anti-pinch device according to claim 1, characterized in that: The cam module includes a cam and a connecting plate. The cam has a central hole and is mounted on the rotating shaft of the mounting base, allowing it to rotate around the shaft. One end of the cam is provided with a connecting plate, which has an oblong hole. The connecting rod of the flap module passes through the oblong hole and is fixed and adjusted in position by upper and lower nuts.

4. The wireless anti-pinch device according to claim 1, characterized in that: The mounting base includes a base and a rotating shaft. A trigger module is mounted on the base, and a cam module is mounted on the rotating shaft. During normal operation, the cam and the trigger module are separated. When the flap module is compressed, the cam rotates to squeeze the trigger module.

5. The wireless anti-pinch device according to claim 1, characterized in that: The trigger module is powered by a self-generating method, which uses piezoelectric ceramics under pressure or electromagnetic coils to generate electricity. It does not require an external power source and can generate electricity and send wireless signals when under pressure.

6. The wireless anti-pinch device according to claim 1, characterized in that: The receiving module can be configured independently or integrated into the elevator control system. The receiving module can receive the wireless signal from the trigger module and transmit it to the control system.

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