A loop proximity sensor for a seat belt
By installing a ring-shaped proximity sensor on the safety belt, the status of the safety rope can be monitored in real time and an alarm can be triggered, which solves the problem of safety rope slack in high-altitude operations and improves the safety of the operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YINGKE IND AUTOMATION CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-07
AI Technical Summary
During high-altitude operations, the safety rope buckle of a full-body safety harness may come loose, making it impossible to monitor the safety status of workers in real time and making it difficult for supervisors to detect potential dangers in a timely manner.
Design a ring-shaped proximity sensor for use on a seat belt, comprising a housing, an induction coil, a PCB circuit board, a signal transmission line, a support ring, a potentiometer, and an indicator light. The induction coil detects the state of the safety rope, and the sensing signal is transmitted to the control host through the signal transmission line to achieve real-time monitoring and alarm.
It enables real-time monitoring of the safety rope's status and timely alarms, ensuring that supervisors can promptly detect the danger of the safety rope becoming loose, thus improving the safety of high-altitude operations.
Smart Images
Figure CN224472079U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of climbing safety auxiliary facilities technology, and in particular to a ring proximity sensor for use on a safety belt. Background Technology
[0002] Full-body safety harnesses are essential for working at heights. However, their use carries inherent safety risks, primarily due to the risk of the safety rope buckle connecting to the work platform coming loose. Furthermore, during these operations, supervisors must constantly monitor compliance with regulations and assess the safety of workers. However, the safety rope connecting the harness to the work belt is often difficult for supervisors on the ground or in monitoring systems to monitor in real time due to distance and other factors. Therefore, to address these issues, a ring-shaped proximity sensor for use with the safety harness was designed. Utility Model Content
[0003] In view of the shortcomings of existing climbing safety facilities, the purpose of this utility model is to provide a ring-shaped proximity sensor for use on safety belts, which has the advantages of detecting the status of the safety rope connected to the safety belt and alarming when the safety rope falls off.
[0004] To achieve the above objectives, the present invention employs the following technical solution: a ring-shaped proximity sensor for use on a seat belt, comprising a housing, an induction coil, a PCB circuit board, a signal transmission line, a support ring, a potentiometer, and an indicator light. The housing contains the PCB circuit board, and the bottom end face of the housing has a signal transmission line electrically connected to the PCB circuit board. The potentiometer and indicator light are located on the side of the housing and electrically connected to the PCB circuit board. The top of the housing is semi-circular, and one side of the housing has a sensing hole concentric with the semi-circular top. The support ring is embedded and fixed within the sensing hole of the housing. The induction coil is located inside the housing and wound around the outer edge of the support ring, and the induction coil is electrically connected to the PCB circuit board.
[0005] Preferably, the housing has a top shell and a bottom shell, which are fastened together to form the housing, and the top shell and bottom shell are made of galvanized iron and stamped.
[0006] More preferably, the joint between the top shell and the bottom shell is provided with a sealing ring or sealant to improve waterproof performance;
[0007] Preferably, a sealing ring or sealant is provided at the joint between the support ring and the shell to improve waterproof performance;
[0008] Preferably, the support ring is made of a non-metallic material, and the inner diameter of the support ring is d, wherein 50mm ≥ d ≥ 30mm;
[0009] Preferably, the annular proximity sensor also includes a matching stainless steel safety rope, which passes through the support ring, with one end connected to the operating platform and the other end connected to the back buckle of the full-body safety harness.
[0010] The beneficial effects of this utility model are: 1. By using a coil-sensing stainless steel safety rope, the signal generated by the sensing is transmitted to the control host through a signal transmission line, allowing supervisors to monitor the real-time status of the safety belt and safety rope; 2. When the buckle fixed to the high-altitude work platform is not fastened and becomes loose, the stainless steel safety rope will fall from the support ring in the sensing hole under the action of gravity. At this time, the coil cannot sense the stainless steel safety rope, and thus sends an alarm signal to the control host through the signal transmission line, allowing supervisors to immediately detect the existing danger. Attached Figure Description
[0011] Figure 1 This is a front structural view of the present invention.
[0012] Figure 2 This utility model Figure 1 Partial sectional view along the AA direction.
[0013] Figure 3 This is a cross-sectional structural view of the present invention.
[0014] Figure 4 This is a schematic diagram of the on-site installation of this utility model. Detailed Implementation
[0015] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0016] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.
[0017] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "equipped with," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0018] Please see Figures 1 to 4 The embodiments of this utility model include:
[0019] A ring-shaped proximity sensor for use on a seat belt includes a housing 1, an induction coil 2, a PCB circuit board 3, a signal transmission line 4, a support ring 5, a potentiometer 6, and an indicator light 7. The PCB circuit board 3 is disposed inside the housing 1, and the signal transmission line 4 is disposed on the bottom end face of the housing 1 and is electrically connected to the PCB circuit board 3. The potentiometer 6 and the indicator light 7 are disposed on the side of the housing 1 and are electrically connected to the PCB circuit board 3. The top of the housing 1 is semi-circular, and one side of the housing 1 has an induction hole concentric with the semi-circular top. The support ring 5 is embedded and fixed in the induction hole of the housing 1. The induction coil 2 is disposed inside the housing 1 and wound around the outer edge of the support ring 5, and the induction coil 2 is electrically connected to the PCB circuit board 3.
[0020] The housing 1 has a top shell and a bottom shell, which are fastened together to form the housing 1. The top shell and the bottom shell are made of galvanized iron and are stamped.
[0021] The joint between the top shell and the bottom shell is provided with a sealing ring or sealant to improve waterproof performance;
[0022] The joint between the support ring 5 and the shell 1 is provided with a sealing ring or sealant to improve waterproof performance;
[0023] The support ring 5 is made of non-metallic material, and the inner diameter of the support ring 5 is d, where 50mm ≥ d ≥ 30mm;
[0024] The ring proximity sensor also includes a matching stainless steel safety rope, which passes through the support ring 5. One end of the stainless steel safety rope is connected to the working platform, and the other end is connected to the back buckle of the full-body safety belt.
[0025] With the above settings, its specific working principle in actual operation is as follows:
[0026] First, install the sensor on the high-altitude work platform and ensure that the safety rope buckle is fixed at the top of the sensor sensing hole. When the worker is working at height, pass the buckle at one end of the stainless steel safety rope through the support ring 5 in the sensing hole, then fix the buckle on the stainless steel safety rope to the high-altitude work platform, and fix the buckle at the other end of the stainless steel cable to the full-body safety belt. At this time, the coil senses the stainless steel safety rope, and the signal generated by the sensing is sent to the control host through the signal transmission line 4, so that the supervisor can see the real-time status of the safety belt and safety rope.
[0027] When the locking buckle fixed to the aerial work platform comes loose, the stainless steel safety rope will fall from the support ring 5 in the sensing hole under the action of gravity. At this time, the coil will not be able to sense the stainless steel safety rope, and thus send an alarm signal to the control host through the signal transmission line 4, so that the supervisor can immediately discover the danger.
[0028] The coil induction sensitivity can be adjusted by rotating potentiometer 6, and the indicator light on the side of the housing is used to indicate the working status.
[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A ring-shaped proximity sensor for use on a seatbelt, characterized in that, The device includes a housing, an induction coil, a PCB circuit board, a signal transmission line, a support ring, a potentiometer, and an indicator light. The PCB circuit board is housed inside the housing, and a signal transmission line is provided on the bottom end face of the housing. The signal transmission line is electrically connected to the PCB circuit board. The potentiometer and indicator light are located on the side of the housing and are electrically connected to the PCB circuit board. The top of the housing is semi-circular, and one side of the housing has an induction hole concentric with the semi-circular top. The support ring is embedded and fixed in the induction hole of the housing. The induction coil is disposed inside the housing and wound around the outer edge of the support ring. The induction coil is electrically connected to the PCB circuit board.
2. A ring-shaped proximity sensor for use on a seatbelt according to claim 1, characterized in that, The housing has a top shell and a bottom shell, which are fastened together to form the housing. The top shell and bottom shell are made of galvanized iron and are stamped.
3. A ring-shaped proximity sensor for use on a seatbelt according to claim 2, characterized in that, The joint between the top and bottom shells is provided with a sealing ring or sealant to improve waterproof performance.
4. A ring-shaped proximity sensor for use on a seatbelt according to claim 1, characterized in that, The joint between the support ring and the shell is provided with a sealing ring or sealant to improve waterproof performance.
5. A ring-shaped proximity sensor for use on a seatbelt according to claim 1, characterized in that, The support ring is made of non-metallic material, and the inner diameter of the support ring is d, where 50mm ≥ d ≥ 30mm.
6. A ring-shaped proximity sensor for use on a seatbelt according to claim 1, characterized in that, The ring proximity sensor also includes a matching stainless steel safety rope, which passes through the support ring. One end of the stainless steel safety rope is connected to the working platform, and the other end is connected to the back buckle of the full-body safety belt.