Integrated prism for dust sensor and prism mounting structure thereof

Abstract

The utility model relates to an integrated prism for a dust sensor and a prism mounting structure of the integrated prism. The main body of the integrated prism for the dust sensor is a right-angle triangular prism, and comprises a reflecting surface positioned on a bevel edge, and a light-in surface and a light-out surface positioned on a right-angle edge; convex lenses with integrated structures are arranged at the central positions of the light-in surface and the light-out surface; the prism is made of a transparent material. The prism is simple in structure, low in manufacturing cost and convenient to install. The prism mounting structure comprises a cylindrical upper bin body and a cylindrical lower bin body, the lower part of the upper bin body is open; the upper part of the lower bin is open; the upper bin body and the lower bin body are sleeved with each other, and the same side is provided with a light-passing opening, and the light-emitting face faces the light-passing opening. The top faces of the lug plates abut against the upper bin body, and the bottom faces abut against the lower bin body. The utility model provides a prism installation structure suitable for an integrated prism for a dust sensor. The prism mounting structure is simple in structure and easy to operate, the prism is fully limited, and the mounting efficiency can be improved while the mounting quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of dust sensors, in particular to an integrated prism for a dust sensor and a prism mounting structure thereof. Background Art

[0002] A dust sensor is a device that can sense and measure the concentration of particulate matter in the air. Its working principle is based on mechanisms such as optical scattering, resistance change or gravity sedimentation. Common dust sensors include optical scattering sensors, resistive sensors, and gravity sedimentation sensors. Among them, the optical scattering sensor uses an optical path formed by a light guide to connect the light-emitting element and the light-receiving element. The commonly used light guide structure and its installation structure are very complex and very troublesome to install; therefore, the manufacturing cost of the light guide and its installation structure is high; the operation of installing the light guide is complicated and the labor cost is high; the light guide performance after installation is unstable, and the installation quality is difficult to guarantee. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide an integrated prism for a dust sensor and a prism mounting structure thereof.

[0004] The technical scheme of the utility model is: an integrated prism for a dust sensor, the main body of which is a right-angled triangular block, comprising a reflecting surface located at the hypotenuse, a light-entering surface and a light-emitting surface located at the right-angled side; the light-entering surface and the light-emitting surface are respectively used for light to enter and exit the prism main body; the reflecting surface is used to reflect the light incident on the inside of the prism main body; both the light-entering surface and the light-emitting surface are provided with a convex lens of an integrated structure at the center position to suppress the scattering of light, increase the amount of detected light and suppress the intrusion of interference light; the prism is made of transparent material.

[0005] Preferably, the angle between the light incident surface and the reflective surface is 45°; the light incident surface and the light emitting surface can be switched with each other, which can reduce the manufacturing cost and installation cost of the prism.

[0006] Furthermore, the convex lens is a spherical convex lens or an aspherical convex lens, which is used to organize the light entering the prism body and emitting the prism body so that the organized light is close to parallel light, thereby improving the detection efficiency.

[0007] Furthermore, rectangular plate-shaped ear plates are symmetrically provided on both sides of the main body, which facilitates the installation of the prism and maximizes the utilization rate of the light-transmitting part of the prism.

[0008] Furthermore, the ear plate is aligned with the light entrance surface and the light exit surface of the prism body; adjusting the ear plate is equivalent to adjusting the prism body, which is convenient for adjustment during installation.

[0009] Furthermore, two end points of the reflective surface are aligned with the end surfaces of the ear plate.

[0010] Furthermore, the outer edge of the ear plate is provided with a notch running through the outer edge, which can avoid installation errors and improve installation efficiency and quality.

[0011] A prism mounting structure of an integrated prism for a dust sensor as described above includes a cylindrical upper bin body and a lower bin body; the upper bin body has an opening at the bottom; the lower bin body has an opening at the top; the upper bin body and the lower bin body are fitted onto each other, and a light opening is provided on the same side for an optical path to pass through; the light emitting surface faces the light opening; the top surface of the ear plate abuts against the upper bin body, and the bottom surface abuts against the lower bin body; the upper bin body and the lower bin body are interlocked to limit the prism and ensure that the prism is installed stably.

[0012] Preferably, a lower pressure plate is fixedly connected to the interior of the upper storage body; the lower pressure plate abuts against the top surface of the ear plate to vertically limit the prism body.

[0013] Furthermore, the lower pressure plates are symmetrically arranged on both sides of the upper storage body to fully limit the vertical position of the prism body.

[0014] Furthermore, a card groove matching the notch is provided at one end of the lower pressing plate; the card groove is inserted into the notch; the card groove cooperates with the notch to prevent incorrect installation and also horizontally limit the prism body.

[0015] Preferably, a U-shaped pad is fixedly connected to the interior of the lower storage body; the pad abuts against the bottom surface of the ear plate to fully limit the vertical position of the prism body.

[0016] The beneficial effects of the utility model are as follows: the integrated prism for the dust sensor of the utility model has the following advantages:

[0017] (1) The prism of the utility model has a simple structure, low manufacturing cost and is easy to install;

[0018] (2) The ear plate provided in the utility model facilitates the installation of the prism and maximizes the utilization rate of the light-transmitting part of the prism;

[0019] (3) The aspheric convex lens of the utility model is used to organize the light entering and exiting the prism body so that the light can be close to parallel light, thereby improving the detection efficiency.

[0020] The prism mounting structure of the integrated prism provides a prism mounting structure suitable for an integrated prism for a dust sensor; the prism mounting structure has a simple structure, is easy to operate, and fully limits the position of the prism, thereby ensuring installation quality while improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a three-dimensional integrated prism for dust sensor Figure 1 ;

[0022] Figure 2The utility model is a three-dimensional integrated prism for dust sensor Figure 2 ;

[0023] Figure 3 It is a schematic diagram of the installation of the prism installation structure of the integrated prism for the dust sensor of the utility model; Figure 3 The dashed arrows in the figure indicate the direction of the light path;

[0024] Figure 4 It is a schematic diagram of the upper bin structure of the prism installation structure of the integrated prism for the dust sensor of the utility model;

[0025] Figure 5 yes Figure 4 Bottom view of

[0026] Figure 6 yes Figure 5 AA section view;

[0027] Figure 7 It is a schematic diagram of the lower bin structure of the prism installation structure of the integrated prism for the dust sensor of the utility model;

[0028] Figure 8 yes Figure 7 A top view of

[0029] In the figure: 11. reflecting surface, 12. light incident surface, 13. light emitting surface, 14. aspherical convex lens, 15. ear plate, 151. notch, 21. upper bin body, 211. lower pressure plate, 212. card flute, 22. lower bin body, 221. cushion block, 23. light opening. DETAILED DESCRIPTION

[0030] Example 1: See Figure 1-2 An integrated prism for a dust sensor, the main body of which is a right-angled triangular block, including a reflecting surface 11 located on the hypotenuse, a light incident surface 12 and a light emitting surface 13 located on the right-angled side; the light incident surface 12 and the light emitting surface 13 are respectively used for light to enter and exit the prism body; the reflecting surface 11 is used to reflect the light incident on the inside of the prism body; both the light incident surface 12 and the light emitting surface 13 are provided with an integrated convex lens at the center position to suppress the scattering of light, increase the amount of detected light and suppress the intrusion of interference light; the prism is made of transparent material.

[0031] Compared with the prior art, the prism of the utility model has a simple structure, low manufacturing cost and is easy to install.

[0032] The angle between the light incident surface 12 and the reflecting surface 11 is 45°; the light incident surface 12 and the light emitting surface 13 can be switched with each other, which can reduce the manufacturing cost and installation cost of the prism.

[0033] The convex lens is a spherical convex lens or an aspherical convex lens 14, which is used to organize the light entering and exiting the prism body so that the organized light is close to parallel light, thereby improving the detection efficiency. The convex lens in this embodiment is an aspherical convex lens 14.

[0034] Rectangular plate-shaped ear plates 15 are symmetrically arranged on both sides of the main body to facilitate the installation of the prism and maximize the utilization rate of the light-transmitting part of the prism.

[0035] The ear plate 15 is aligned with the light incident surface 12 and the light emitting surface 13 of the prism body; adjusting the ear plate 15 is equivalent to adjusting the prism body, which is convenient for adjustment during installation.

[0036] The two end points of the reflective surface are aligned with the end surfaces of the ear plate 15 .

[0037] The outer edge of the ear plate 15 is provided with a notch 151 that runs through the outer edge, which can avoid installation errors and improve installation efficiency and quality.

[0038] Working principle of this embodiment: The convex lens suppresses the scattering of light, increases the amount of detection light, and suppresses the intrusion of interfering light. The light-entering surface 12 and the light-exiting surface 13 can be switched with each other, which can reduce the manufacturing cost and installation cost of the prism. The aspheric convex lens 14 organizes the light entering and exiting the prism body so that the light is close to parallel light, thereby improving the detection efficiency. The ear plate 15 facilitates the installation of the prism and maximizes the utilization rate of the light-transmitting part of the prism. The notch 151 can avoid installation errors and improve installation efficiency and quality.

[0039] Example 2: See Figure 3-8 A prism mounting structure of an integrated prism for a dust sensor described in Example 1 includes a cylindrical upper bin body 21 and a lower bin body 22; the upper bin body 21 has an opening at the bottom; the lower bin body 22 has an opening at the top; the upper bin body 21 and the lower bin body 22 are fitted together, and a light opening 23 is provided on the same side for an optical path to pass through a light emitting surface 13 toward the light opening 23; the top surface of the ear plate 15 abuts against the upper bin body 21, and the bottom surface abuts against the lower bin body 22; the upper bin body 21 and the lower bin body 22 are interlocked to limit the prism and ensure that the prism is installed stably.

[0040] Compared with the prior art, the utility model provides a prism mounting structure suitable for an integrated prism for a dust sensor; the prism mounting structure has a simple structure, is easy to operate, and can fully limit the position of the prism, thereby ensuring installation quality while improving installation efficiency.

[0041] Figure 4 There are two upper storage bodies 21, one of which has the integrated prism described in the first embodiment installed therein, and the other upper storage body 21 has no integrated prism installed therein.

[0042] A lower pressing plate 211 is fixedly connected to the interior of the upper storage body 21 ; the lower pressing plate 211 abuts against the top surface of the ear plate 15 to limit the vertical position of the prism body.

[0043] The lower pressing plates 211 are symmetrically arranged on both sides of the upper storage body 21 to fully limit the vertical position of the prism body.

[0044] One end of the lower pressing plate 211 is provided with a collar 212 matching the notch 151 ; the collar is inserted into the notch 151 ; the collar cooperates with the notch 151 to prevent incorrect installation and also to limit the horizontal position of the prism body.

[0045] A U-shaped cushion block 221 is fixedly connected inside the lower housing 22 ; the cushion block 221 abuts against the bottom surface of the ear plate 15 to fully limit the vertical position of the prism body.

[0046] The working principle of this embodiment is as follows: the upper storage body 21 and the lower storage body 22 are interlocked to limit the prism and ensure the stable installation of the prism. The card fluting cooperates with the notch 151 to prevent incorrect installation and also limit the horizontal position of the prism body. The lower pressure plate 211 cooperates with the cushion block 221 to fully limit the vertical position of the prism body.

[0047] The installation process of this embodiment is as follows: the upper warehouse body 21 is turned upside down on the table; the integrated prism is placed inside the upper warehouse body 21; the light-entering surface 12 of the integrated prism faces downward, and the light-emitting surface 13 faces the direction of the light-through port 23; when the integrated prism just enters the upper warehouse body 21, the notch 151 on the ear plate 15 is engaged with the corrugation 212, so that the integrated prism can move down along the corrugation 212; if the notch 151 cannot be engaged with the corrugation 212, the integrated prism is taken out of the upper warehouse body 21 and readjusted; the downwardly moving integrated prism makes the ear plate 15 fall onto the lower pressing plate 211 and stops moving down; the lower warehouse body 22 is turned upside down on the upper warehouse body 21; the lower warehouse body 22 is sleeved outside the upper warehouse body 21, and then slowly falls until the pad 221 abuts against the ear plate 15. The integrated prism is well limited. Press the upper storage body 21 and the lower storage body 22 with both hands at the same time, and then turn it over so that the upper storage body 21 is on the top and the lower storage body 22 is on the bottom.

Claims

1. An integrated prism for a dust sensor, characterized in that: The main body is a right-angled triangular prism, including a reflective surface located on the hypotenuse, and a light-incident surface and a light-emitting surface located on the right-angled side; both the light-incident surface and the light-emitting surface are provided with an integral convex lens at the center, and the prism is made of transparent material.

2. The integrated prism for dust sensor according to claim 1, characterized in that: The angle between the light incident surface and the reflection surface is 45°.

3. The integrated prism for dust sensor according to claim 1 or 2, characterized in that: The convex lens is a spherical convex lens or an aspherical convex lens.

4. The integrated prism for a dust sensor according to claim 1 or 2, characterized in that: Rectangular plate-shaped ear plates are symmetrically arranged on both sides of the main body.

5. The integrated prism for dust sensor according to claim 4, characterized in that: The outer edge of the ear plate is provided with a notch which runs through the outer edge.

6. A prism mounting structure of an integrated prism for a dust sensor according to claim 5, characterized in that: It includes a cylindrical upper bin body and a lower bin body; the upper bin body has an opening at the bottom; the lower bin body has an opening at the top; the upper bin body and the lower bin body are fitted together, and a light outlet is provided on the same side with a light outlet facing the light outlet; the top surface of the ear plate abuts against the upper bin body, and the bottom surface abuts against the lower bin body.

7. The prism mounting structure according to claim 6, characterized in that: A lower pressing plate is fixedly connected inside the upper bin body; the lower pressing plate abuts against the top surface of the ear plate.

8. The prism mounting structure according to claim 7, characterized in that: The lower pressing plates are symmetrically arranged on both sides of the upper bin body.

9. The prism mounting structure according to claim 8, characterized in that: One end of the lower pressing plate is provided with a corrugation matching the notch; the corrugation is inserted into the notch.

10. The prism mounting structure according to claim 6 or 9, characterized in that: A U-shaped cushion block is fixedly connected inside the lower bin body; the cushion block abuts against the bottom surface of the ear plate.

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