Small-size highly-waterproof TOF sensor product

By optimizing the structural design of the TOF sensor and adopting waterproof rings and screw fastening methods, a small-sized TOF sensor with high waterproof performance has been realized, solving the problems of poor waterproof performance and excessive size of existing products. It is suitable for applications that monitor the amount of toilet paper remaining in the roll and the occupancy of the restroom.

CN224263398UActive Publication Date: 2026-05-19SHENZHEN HUACHUANG HENGDA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN HUACHUANG HENGDA TECH CO LTD
Filing Date
2025-06-03
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing short-range infrared TOF sensor products have problems with poor waterproof performance and excessive size, which cannot meet the application requirements of monitoring the remaining amount of toilet paper in the roll and the occupancy of the restroom.

Method used

A small-sized, highly waterproof TOF sensor was designed. The front and back shells are fastened together with screws to form a housing space, which contains a module board, PCBA assembly, battery and battery pre-compression foam. Waterproof rings and mounting protrusions are used to achieve a seal. The module board is equipped with an infrared TOF sensor assembly and a waterproof working window. The battery is positioned by attaching foam. The product is attached to the outside of the back shell, and the protection level is not lower than IP67.

Benefits of technology

The product features a simplified structure, smaller size, and high waterproof performance, meeting the IP67 protection rating. It also facilitates battery removal and replacement, making it suitable for applications of small-sized, highly waterproof TOF sensors.

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Abstract

The utility model discloses a small-size highly-waterproof TOF sensor product, which comprises a surface shell, a module board, a PCBA (printed circuit board assembly), a battery, battery prepressing foam, a waterproof ring, a bottom shell and product pasting foam, and is characterized in that the surface shell and the bottom shell are assembled in a screw fastening manner to form an accommodating space; the module board, the PCBA assembly, the battery and the battery pre-pressing foam are all arranged in the containing space, a groove surrounding the face shell is formed in the edge of the face shell, the waterproof ring is arranged at the position of the groove, a mounting protrusion is formed in the position, corresponding to the groove, of the bottom shell, the mounting protrusion is embedded into the groove and tightly presses the waterproof ring, and the waterproof ring is arranged on the bottom shell. The module board is provided with an infrared TOF sensor assembly, and the module board is electrically connected with the PCBA assembly through a board-to-board connector. The LED lamp is simple in overall structure and small in product size, the corresponding size and waterproof requirements are met, the LED lamp is of a detachable design, and the battery is convenient to disassemble and replace.
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Description

Technical Field

[0001] This utility model relates to the field of TOF sensor product technology, and in particular to a small-sized, highly waterproof TOF product. Background Technology

[0002] Currently, there are two main application scenarios for short-range infrared TOF sensors: one is monitoring the amount of toilet paper used in a roll, where the sensor is placed inside the roll and the remaining amount is estimated by measuring the distance. This is distance detection with millimeter-level accuracy and a detection range within 1 meter. The other is monitoring occupancy in restrooms, where the sensor is placed above the restroom and the presence of people is estimated by detecting the distance. This is proximity detection with no accuracy requirements and a detection range within 3 meters. Current products on the market suffer from issues such as inadequate waterproofing and excessive size, failing to adequately meet these needs. Utility Model Content

[0003] This invention addresses existing needs by providing a small-sized, highly waterproof TOF sensor product.

[0004] The technical solution of this utility model is as follows: This utility model provides a small-sized, highly waterproof TOF sensor product, including: a front shell, a module board, a PCBA assembly, a battery, battery pre-compression foam, a waterproof ring, a bottom shell, and product adhesive foam. The front shell and the bottom shell are assembled by screw fastening to form a receiving space. The module board, PCBA assembly, battery, and battery pre-compression foam are all disposed within the receiving space. A groove is formed around the edge of the front shell, and the waterproof ring is disposed in the groove. The bottom shell has a mounting protrusion corresponding to the groove. The mounting protrusion is embedded in the groove and presses the waterproof ring. An infrared TOF sensor assembly is provided on the module board. The module board is electrically connected to the PCBA assembly through a board-to-board connector. A matching waterproof working window is provided on the front shell corresponding to the infrared TOF sensor assembly on the module board. The battery is electrically connected to the PCBA assembly, and the battery is positioned by the battery pre-compression foam pasted on the inner side of the bottom shell. The product adhesive foam is pasted on the outer side of the bottom shell.

[0005] Furthermore, the product's protection level is no lower than IP67.

[0006] Furthermore, a hanging ring is formed on the outer shell, and the bottom shell is open to the hanging ring.

[0007] The advantages of this utility model by adopting the above solution are: the overall structure is simplified, the product size is small, it meets the corresponding size and waterproof requirements, and it is detachable, which makes it convenient to disassemble and replace the battery. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0009] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0010] Figure 3 This is an exploded view of the present invention.

[0011] Figure 4 This is a schematic diagram of the front cover of this utility model. Detailed Implementation

[0012] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] Please refer to the following: Figures 1 to 4 In this embodiment, the present invention provides a small-sized, highly waterproof TOF sensor product, comprising: a front shell 1, a module board 2, a PCBA assembly 3, a battery 5, battery pre-compression foam 6, a waterproof ring 7, a bottom shell 8, and product adhesive foam 9. The front shell 7 and the bottom shell 8 are assembled by self-tapping screws 4 and form a receiving space. The module board 2, PCBA assembly 3, battery 5, and battery pre-compression foam 6 are all disposed within the receiving space. A groove 11 is formed around the edge of the front shell 1, and the waterproof ring 7 is disposed in the groove 11. The bottom shell 8 has a mounting protrusion corresponding to the groove 11, and the mounting protrusion is embedded in the groove 11. The waterproof ring 7 is pressed tightly to achieve waterproof sealing. An infrared TOF sensor assembly is mounted on the module board 2, which is electrically connected to the PCBA assembly 3 via a board-to-board connector. The PCBA assembly 3 also has buttons for easy control. A matching waterproof working window 11 is provided on the front shell 1 corresponding to the infrared TOF sensor assembly on the module board 2, ensuring the normal operation of the infrared TOF sensor assembly. The battery 5 is electrically connected to the PCBA assembly 3, and the battery 5 is positioned by being compressed by the battery pre-compression foam 6 attached to the inside of the bottom shell 8. The product adhesive foam 9 is attached to the outer surface of the bottom shell 8. This design has a simplified structure, allowing the product size to be no larger than 43*43*16.5mm.

[0014] Furthermore, the product's protection rating is no lower than IP67, which can well meet the waterproof requirements.

[0015] Furthermore, a hanging ring 13 is formed on the outer shell 1, and the bottom shell 9 is open to the hanging ring 13. By setting the hanging ring 13, the product can be hung on the trash can and fixed by screws.

[0016] In summary, the advantages of this solution are: a simplified overall structure, a smaller product size, meeting the corresponding size and waterproof requirements, and a detachable design for easy battery replacement.

[0017] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small-sized, highly waterproof TOF sensor product, characterized in that, include: The device comprises a front shell, a module board, a PCBA assembly, a battery, battery pre-compression foam, a waterproof ring, a bottom shell, and product adhesive foam. The front shell and the bottom shell are assembled and formed into a receiving space by screw fastening. The module board, PCBA assembly, battery, and battery pre-compression foam are all disposed within the receiving space. A groove is formed around the edge of the front shell, and the waterproof ring is disposed in the groove. The bottom shell has a mounting protrusion corresponding to the groove, which is embedded in the groove and presses the waterproof ring. An infrared TOF sensor assembly is provided on the module board, and the module board is electrically connected to the PCBA assembly through a board-to-board connector. A matching waterproof working window is provided on the front shell corresponding to the infrared TOF sensor assembly of the module board. The battery is electrically connected to the PCBA assembly, and the battery is positioned by the battery pre-compression foam attached to the inside of the bottom shell. The product adhesive foam is attached to the outer surface of the bottom shell.

2. The small-sized, highly waterproof TOF sensor product according to claim 1, characterized in that, The protection level is not lower than IP67.

3. The small-sized, highly waterproof TOF sensor product according to claim 1 or 2, characterized in that, A hanging ring is formed on the outer shell, and the bottom shell is open to the hanging ring.