Enhanced background suppression type photoelectric sensor

Abstract

The utility model discloses a reinforced background suppression type photoelectric sensor, which relates to the field of photoelectric sensors and comprises a lens support, the lens support is provided with two independent cavities, the two independent cavities are respectively a transmitting cavity and a receiving cavity, a transmitting lens C1 is mounted in the transmitting cavity, and a receiving lens C1 is mounted in the receiving cavity. And a receiving lens C2 is connected in the receiving cavity in a sliding manner. The beneficial effects of the utility model are that: through the lens support, the emission lens, the reception lens, the plastic adjusting screw and the reception optical filter, small objects, thin objects and objects of different colors can be detected, the detection performance is excellent, through the lens support, the reception lens and the plastic adjusting screw, the distance of the reception lens can be adjusted, and the detection precision is high. Therefore, different detection distances can be obtained, the adaptive range is large, the structure is simple, the cost is low, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of photoelectric sensors, in particular to an enhanced background suppression type photoelectric sensor. Background Art

[0002] Photoelectric sensors convert light signals into electrical signals. They are widely used in industrial automation and logistics. Background suppression photoelectric sensors are immune to background interference. They are unaffected by object color, gloss, and other factors, and can detect objects at essentially equal distances. Background suppression shields the sensor from the background, preventing it from affecting detection.

[0003] As the demand for photoelectric sensors grows, the types of objects that need to be detected are also increasing, such as tiny objects, ultra-thin objects, and objects of different colors. Currently, existing sensors usually require more complex debugging and settings before use to ensure that they can accurately detect target objects and suppress background interference. This process may require professional technicians to operate and takes a long time to adjust sensor parameters such as detection distance and sensitivity, which increases the difficulty and cost of use. Utility Model Content

[0004] The purpose of the present invention is to provide an enhanced background suppression photoelectric sensor in order to solve the above problems, as described below.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model provides an enhanced background suppression photoelectric sensor, comprising a lens holder, wherein the lens holder has two independent cavities, the lens holder being provided with two independent cavities, namely a transmitting cavity and a receiving cavity, wherein a transmitting lens C1 is installed in the transmitting cavity, and a receiving lens C2 is slidably connected in the receiving cavity;

[0007] The receiving lens C2 has a bent and drooping part, and a tooth shape ST-1 is provided on the bent and drooping part. A plastic adjustment screw is threadedly connected to the lens bracket, and the plastic adjustment screw is plugged into the tooth shape ST-1. The bottom of the emitting cavity and the bottom of the receiving cavity of the lens bracket are respectively fixedly connected with an emitting shielding plate and a receiving filter.

[0008] Preferably, circular through holes B1-2 are provided on opposite sides of the inner wall of the lens holder emission cavity, and cylindrical protrusions B1-1 are fixedly connected to both sides of the emission lens C1, and the two cylindrical protrusions B1-1 are respectively plugged into the two circular through holes B1-2.

[0009] Preferably, sliding guide grooves B2-2 are provided on both sides of the inner wall of the lens holder receiving cavity, and cylindrical sliders B2-1 are fixedly connected on both sides of the receiving lens C2, and the two cylindrical sliders B2-1 slide in the two sliding guide grooves B2-2 respectively.

[0010] Preferably, a second card slot E1 is provided on the lens bracket, and a first hook E2 and a second hook P are fixedly connected to the upper and lower sides of the lens bracket respectively.

[0011] Preferably, wing protrusions D2-2 are fixedly connected to both sides of the emission shielding plate, a card slot D2-1 is provided on the lens bracket, and the wing protrusion D2-2 can be snapped into the card slot D2-1.

[0012] Preferably, a buckle F for snapping in the receiving filter is fixedly connected to the bottom of the receiving cavity of the lens holder.

[0013] The beneficial effects are:

[0014] The lens holder, transmitting lens, receiving lens, plastic adjusting screw and receiving filter are used to detect smaller objects, thinner objects and objects of different colors, and have excellent detection performance. At the same time, the distance of the receiving lens can be adjusted by the lens holder, receiving lens and plastic adjusting screw, so that different detection distances can be obtained. It has a large adaptation range, simple structure and low cost, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the first explosion structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the second explosion structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the front cross-sectional structure of the lens bracket of the present invention.

[0020] The following are the descriptions of the reference numerals:

[0021] 1. Lens bracket; 2. Transmitter shield; 3. Receiving filter; 4. Plastic adjustment screw; C1. Transmitter lens; C2. Receiving lens; B1-1. Cylindrical protrusion; B1-2. Circular through hole; B2-1. Cylindrical slider; B2-2. Sliding guide groove; D2-1. Slot 1; D2-2. Wing protrusion; ST-1. Tooth shape; E1. Slot 2; E2. Hook 1; P. Hook 2; F. Buckle. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1-4 As shown, the utility model provides an enhanced background suppression photoelectric sensor, including a lens holder 1, the lens holder 1 having two independent cavities, the lens holder 1 is provided with two independent cavities, namely a transmitting cavity and a receiving cavity, and a transmitting lens C1 is installed in the transmitting cavity, and a receiving lens C2 is slidably connected in the receiving cavity;

[0024] The receiving lens C2 has a bent and drooping part, and a tooth shape ST-1 is provided on the bent and drooping part. A plastic adjustment screw 4 is threadedly connected to the lens bracket 1, and the plastic adjustment screw 4 is plugged into the tooth shape ST-1. The bottom of the emitting cavity and the bottom of the receiving cavity of the lens bracket 1 are respectively fixedly connected with an emitting shielding plate 2 and a receiving filter 3.

[0025] Specifically, the emitting lens C1 is installed in the emitting cavity of the lens holder 1 through the cylindrical protrusion B1-1. By rotating the plastic adjusting screw 4, the receiving lens C2 can be moved using the plastic adjusting screw 4 to adjust the distance of the receiving lens C2, thereby obtaining different detection distances. Through the lens holder 1, the emitting lens C1, the receiving lens C2, the plastic adjusting screw 4 and the receiving filter 3, smaller objects, thinner objects and objects of different colors can be detected, highlighting the excellent detection performance.

[0026] As an optional embodiment, circular through holes B1-2 are provided on opposite sides of the inner wall of the emitting cavity of the lens holder 1, cylindrical protrusions B1-1 are fixedly connected to both sides of the emitting lens C1, and the two cylindrical protrusions B1-1 are respectively plugged into the two circular through holes B1-2.

[0027] Specifically, the cylindrical protrusion B1-1 is provided to facilitate direct insertion into the receiving cavity of the lens holder 1, and the receiving filter 3 is clamped by the buckle F, and no other means of fixing are required, and the receiving filter 3 can also be easily installed and disassembled.

[0028] Sliding guide grooves B2-2 are provided on both sides of the inner wall of the receiving cavity of the lens holder 1. Cylindrical sliders B2-1 are fixedly connected to both sides of the receiving lens C2. The two cylindrical sliders B2-1 slide in the two sliding guide grooves B2-2 respectively.

[0029] A second card slot E1 is provided on the lens bracket 1 , and a first hook E2 and a second hook P are fixedly connected to the upper and lower sides of the lens bracket 1 respectively.

[0030] Both sides of the emission shielding plate 2 are fixedly connected with wing protrusions D2-2, a card slot D2-1 is opened on the lens bracket 1, and the wing protrusion D2-2 can be snapped into the card slot D2-1, and the bottom of the receiving cavity of the lens bracket 1 is fixedly connected with a buckle F for snapping the receiving filter 3.

[0031] Specifically, the lens bracket 1 has a slot D2-1 and a hook E2 that can be fixed on the outer shell of the device through their own elastic deformation, without the need for other fixing methods, and the assembly is simple and convenient. The lens bracket 1 has two symmetrical hooks P that can fix the circuit board, and the buckle F on the lens bracket 1 can clamp the receiving filter 3.

[0032] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An enhanced background suppression photoelectric sensor, characterized in that : comprising a lens holder (1), the lens holder (1) having two independent cavities, the lens holder (1) being provided with two independent cavities, namely a transmitting cavity and a receiving cavity, wherein a transmitting lens (C1) is installed in the transmitting cavity, and a receiving lens (C2) is slidably connected in the receiving cavity; The receiving lens (C2) has a bent and drooping portion, and a tooth shape (ST-1) is provided on the bent and drooping portion. A plastic adjusting screw (4) is threadedly connected to the lens bracket (1), and the plastic adjusting screw (4) is plugged into the tooth shape (ST-1). The bottom of the emitting cavity and the bottom of the receiving cavity of the lens bracket (1) are respectively fixedly connected with an emitting shielding plate (2) and a receiving filter (3).

2. The enhanced background suppression photoelectric sensor according to claim 1, characterized in that Circular through holes (B1-2) are provided on opposite sides of the inner wall of the emission cavity of the lens holder (1), cylindrical protrusions (B1-1) are fixedly connected to both sides of the emission lens (C1), and the two cylindrical protrusions (B1-1) are respectively plugged into the two circular through holes (B1-2).

3. The enhanced background suppression photoelectric sensor according to claim 1, characterized in that Sliding guide grooves (B2-2) are provided on both sides of the inner wall of the receiving cavity of the lens holder (1), and cylindrical sliders (B2-1) are fixedly connected on both sides of the receiving lens (C2), and the two cylindrical sliders (B2-1) slide in the two sliding guide grooves (B2-2) respectively.

4. The enhanced background suppression photoelectric sensor according to claim 1, characterized in that The lens bracket (1) is provided with a second card slot (E1), and the upper and lower sides of the lens bracket (1) are respectively fixedly connected with a hook 1 (E2) and a hook 2 (P).

5. The enhanced background suppression photoelectric sensor according to claim 1, characterized in that Both sides of the emission shielding plate (2) are fixedly connected with wing protrusions (D2-2), and a card slot (D2-1) is provided on the lens bracket (1), and the wing protrusion (D2-2) can be carded into the card slot (D2-1).

6. The enhanced background suppression photoelectric sensor according to claim 1, characterized in that A buckle (F) for clamping the receiving filter (3) is fixedly connected to the bottom of the receiving cavity of the lens holder (1).

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