Miniature triangular laser displacement sensor

Abstract

A miniature triangular laser displacement sensor comprises an outer shell, and a laser emitting assembly, an optical receiving assembly, a display screen assembly, a key module, an auxiliary circuit board and a main control circuit board are arranged in the outer shell. The laser emitting assembly comprises a laser tube and a focusing lens, and the focusing lens is located on the front side of the laser tube; the optical receiving assembly comprises a light receiving chip and a light receiving lens, and the light receiving lens is located on the front side of the light receiving chip; in conclusion, the laser tube, the light receiving chip, the auxiliary circuit board and the main control circuit board are integrated in the integrated shell, the overall structure is compact, and the size of the sensor is effectively reduced; the porous design of the outer shell improves the heat leading-out efficiency, and is beneficial to improving the stability and the service life of the equipment; the high-protection-level high-interference-resistance power distribution cabinet is compact in structural design, high in integration level, good in anti-interference performance and heat dissipation performance and high in protection level, and is suitable for the fields of industrial automation, precise positioning, robots and the like.

Description

Technical Field

[0001] This utility model belongs to the field of displacement sensor technology, specifically relating to a miniature triangular laser displacement sensor. Background Technology

[0002] Existing laser displacement sensors are widely used in industrial inspection and precision measurement. However, most products are large and complex in structure, making them difficult to install in compact or integrated equipment. Furthermore, they are susceptible to damage in harsh environments such as high temperature, high dust, and high interference, exhibiting insufficient stability and durability. Additionally, the laser emitting and receiving modules are typically separated in existing technologies, leading to complex wiring, poor heat dissipation, and hindering overall miniaturization design. To address these issues, there is an urgent need for a miniature triangular laser displacement sensor that is smaller, simpler in structure, possesses good heat dissipation and anti-interference capabilities, and can maintain high measurement accuracy and a large measurement range while being suitable for complex industrial environments. Utility Model Content

[0003] The present invention aims to provide a miniature triangular laser displacement sensor to solve the technical problems of existing laser displacement sensors, such as large size, complex structure, poor heat dissipation, and low measurement accuracy.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A miniature triangular laser displacement sensor includes a housing, within which are disposed a laser emitting component, an optical receiving component, a display screen component, a button module, an auxiliary circuit board, and a main control circuit board;

[0006] A laser emitting assembly includes a laser tube and a focusing lens, with the focusing lens located in front of the laser tube;

[0007] An optical receiving assembly includes a light-receiving chip and a light-receiving lens, wherein the light-receiving lens is located in front of the light-receiving chip and is arranged side by side with the focusing lens;

[0008] The display screen assembly is connected to the main control circuit board via a flexible circuit board, and the button module is connected to the auxiliary circuit board.

[0009] The laser tube, light-collecting chip, and auxiliary circuit board are all connected to the main control circuit board; the auxiliary circuit board and the main control circuit board are also connected to power lines.

[0010] The outer casing is also provided with a window slot, in which two windows are opened. The two windows correspond to the light-collecting lens and the focusing lens, respectively. A light-emitting window piece is attached to the window slot with double-sided adhesive tape to the first window piece. The light-emitting window piece is provided with a light-emitting port corresponding to the focusing lens.

[0011] Furthermore, the outer casing includes a middle frame, an upper side cover, and a lower side cover, with the upper and lower side covers respectively encapsulated on the top and bottom of the middle frame; a window slot is provided on the middle frame.

[0012] Furthermore, a display lens frame is fixed inside the outer casing, and a lens groove is provided on the display lens frame. A light-emitting lens frame is installed in the lens groove, and the laser emitting component and the optical receiving component are both set on the light-emitting lens frame.

[0013] Furthermore, the middle frame is provided with a display screen mounting port, the display screen assembly is disposed in the display screen mounting port, and a display window sheet is attached to the outside of the display screen mounting port by means of double-sided adhesive tape.

[0014] Furthermore, the middle frame is provided with button holes, and the button module includes a button board and a button bracket. The button bracket is installed inside the middle frame, and the button board is set on the button bracket. The buttons on the button board correspond to the button holes; the button board is connected to the auxiliary circuit board.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model integrates a laser tube, a light-collecting chip, an auxiliary circuit board, and a main control circuit board inside an integrated housing, resulting in a compact overall structure and effectively reducing the sensor size; the porous design of the housing improves heat dissipation efficiency, which helps to improve equipment stability and service life; this utility model has a compact structure and high integration, with good anti-interference performance, heat dissipation performance, and high protection level, making it suitable for industrial automation, precision positioning, robotics, and other fields. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is an isometric view of a miniature triangular laser displacement sensor according to the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of a miniature triangular laser displacement sensor after removing the outer shell.

[0019] Figure 3 An exploded view of a miniature triangular laser displacement sensor;

[0020] Figure 4 An exploded view of a miniature triangular laser displacement sensor after removing the outer casing and the light-emitting lens mount. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The present invention will be further described in detail below with reference to the embodiments.

[0023] like Figure 1-4 As shown, a specific embodiment of the miniature triangular laser displacement sensor provided by this utility model is as follows:

[0024] A miniature triangular laser displacement sensor includes a housing 1, within which are disposed a laser emitting component, an optical receiving component, a display screen component, a button module, an auxiliary circuit board 2, and a main control circuit board 3.

[0025] The outer casing 1 includes a middle frame 4, an upper side cover 5, and a lower side cover 6. The upper side cover 5 and the lower side cover 6 are respectively encapsulated on the top and bottom of the middle frame 4. The outer casing 1 provides mechanical support and external protection for the internal structure and has good heat dissipation performance.

[0026] A display lens frame 7 is fixed inside the outer casing 1. The display lens frame 7 is provided with a lens groove, and a light-emitting lens frame 8 is installed in the lens groove. The laser emitting component and the optical receiving component are both set on the light-emitting lens frame 8.

[0027] A laser emitting assembly includes a laser tube 9 and a focusing lens 10, with the focusing lens 10 located in front of the laser tube 9; the laser tube 9 is used to emit a laser beam, and the focusing lens 10 is used to adjust the divergence angle of the laser beam.

[0028] The optical receiving component includes a light-receiving chip 11 and a light-receiving lens 12. The light-receiving lens 12 is located in front of the light-receiving chip 11 and is arranged side by side with the focusing lens 10. The light-receiving chip 11 is used to receive the laser spot reflected back from the target object.

[0029] A window slot is also provided on the middle frame 4. Two windows 13 are opened in the window slot. The two windows 13 correspond to the light-collecting lens 12 and the focusing lens 10, respectively. A light-emitting window piece 25 is attached to the window slot by the first window piece double-sided adhesive 14. A light-emitting port 15 corresponding to the focusing lens 10 is provided on the light-emitting window piece 25.

[0030] The display assembly 16 is connected to the main control circuit board 3 via a flexible circuit board 17 (FPC), and the button module is connected to the auxiliary circuit board 2. The middle frame 4 is provided with a display mounting port 18, the display assembly 16 is disposed in the display mounting port 18, and a display window 20 is attached to the outside of the display mounting port 18 via a second window double-sided adhesive 19.

[0031] The laser tube 9, the light-collecting chip 11, and the auxiliary circuit board 2 are all connected to the main control circuit board 3; the auxiliary circuit board 2 and the main control circuit board 3 are also connected to a power line 21.

[0032] The specific installation method of the button module is as follows: the middle frame 4 is provided with button holes 22, the button module includes a button plate 23 and a button bracket 24, the button bracket 24 is installed inside the middle frame 4, the button plate 23 is set on the button bracket 24, and the buttons on the button plate 23 correspond to the button holes 22; the button plate 23 is connected to the auxiliary circuit board 2.

[0033] In operation, the laser tube 9 emits a laser beam, which shines onto the surface of the object being measured through the light outlet 15. The reflected light is received by the light receiving chip 11, which converts the received light signal into an electrical signal. By calculating the point where the reflected light falls, the relative distance change of the object being measured can be determined. This displacement sensor can achieve a maximum range of 200mm and an accuracy of millimeters. Its compact size makes it suitable for installation and use in space-constrained environments.

[0034] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A miniature triangular laser displacement sensor, characterized in that, It includes an outer casing, within which are housed a laser emitting assembly, an optical receiving assembly, a display screen assembly, a button module, an auxiliary circuit board, and a main control circuit board; A laser emitting assembly includes a laser tube and a focusing lens, with the focusing lens located in front of the laser tube; An optical receiving assembly includes a light-receiving chip and a light-receiving lens, wherein the light-receiving lens is located in front of the light-receiving chip and is arranged side by side with the focusing lens; The display screen assembly is connected to the main control circuit board via a flexible circuit board, and the button module is connected to the auxiliary circuit board. The laser tube, light-collecting chip, and auxiliary circuit board are all connected to the main control circuit board; the auxiliary circuit board and the main control circuit board are also connected to power lines. The outer casing is also provided with a window slot, in which two windows are opened. The two windows correspond to the light-collecting lens and the focusing lens, respectively. A light-emitting window piece is attached to the window slot with double-sided adhesive tape to the first window piece. The light-emitting window piece is provided with a light-emitting port corresponding to the focusing lens.

2. The miniature triangular laser displacement sensor according to claim 1, characterized in that: The outer casing includes a middle frame, an upper side cover, and a lower side cover, with the upper and lower side covers respectively encapsulated on the top and bottom of the middle frame; a window slot is provided on the middle frame.

3. The miniature triangular laser displacement sensor according to claim 1, characterized in that: A display lens frame is fixed inside the outer casing. The display lens frame has a lens groove, and a light-emitting lens frame is installed in the lens groove. The laser emitting component and the optical receiving component are both set on the light-emitting lens frame.

4. A miniature triangular laser displacement sensor according to claim 2, characterized in that: The middle frame is provided with a display screen mounting port, the display screen assembly is set in the display screen mounting port, and a display window sheet is attached to the outside of the display screen mounting port by double-sided adhesive tape.

5. A miniature triangular laser displacement sensor according to claim 2, characterized in that: The middle frame has button holes. The button module includes a button board and a button bracket. The button bracket is installed inside the middle frame, and the button board is set on the button bracket. The buttons on the button board correspond to the button holes. The button board is connected to the auxiliary circuit board.

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