Photoelectric sensor

Abstract

The utility model provides a photoelectric sensor, which comprises a bottom plate on which a light emitter, a light receiver and a circuit are arranged; an avoiding groove is formed in the positioning plate; the positioning plate is arranged on the upper side surface of the bottom plate, so that the avoiding groove is arranged corresponding to the light emitter, the light receiver and the circuit; the panel comprises a first panel or a second panel, a light-transmitting groove is formed in the first panel, and two light-transmitting holes are formed in the second panel; the first panel or the second panel is arranged on the upper side surface of the positioning plate according to functional requirements; according to the photoelectric sensor, the bottom plate, the positioning plate, the light emitter, the light receiver and the circuit are designed into a universal structure, and the photoelectric sensor can detect whether an object approaches or not or detect the liquid level by matching with the first panel or the second panel; according to the design of the general structure, parts can be shared, the production cost is reduced, the production efficiency is improved, the thickness of the photoelectric sensor manufactured by the three-plate structure is reduced, and the photoelectric sensor is suitable for being used in different scenes.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and in particular relates to a photoelectric sensor. Background Art

[0002] In the prior art, the proximity sensor for detecting whether an object is approaching and the photoelectric sensor for liquid level detection are two separate sensors, and their structures are completely different and not universal, which makes it impossible to share components. The components need to be designed and produced separately during the manufacturing process, which increases production costs and fails to make rational use of production resources. Utility Model Content

[0003] In order to overcome the above technical defects, the utility model provides a photoelectric sensor, which can solve the technical problem that the structures of the above two types of photoelectric sensors in the prior art are not universal.

[0004] The utility model is implemented according to the following technical solutions:

[0005] The utility model provides a photoelectric sensor, which includes:

[0006] a base plate on which a light transmitter, a light receiver and a circuit are arranged;

[0007] A positioning plate having an avoidance groove; the positioning plate is arranged on the upper side of the bottom plate so that the avoidance groove corresponds to the optical transmitter, the optical receiver and the circuit arrangement;

[0008] The panel comprises a first panel or a second panel, wherein the first panel is provided with a light-transmitting groove, and the second panel is provided with two light-transmitting holes; the first panel or the second panel is arranged on the upper side of the positioning plate according to functional requirements;

[0009] When the first panel is arranged on the upper side of the positioning plate, the light-transmitting groove is arranged corresponding to the light emitter and the light receiver;

[0010] When the second panel is arranged on the upper side of the positioning plate, one of the two light-transmitting holes is arranged corresponding to the light transmitter, and the other one is arranged corresponding to the light receiver.

[0011] Compared with the prior art, the present application designs the base plate, positioning plate, light transmitter, light receiver and circuit into a universal structure. By matching the first panel or the second panel, the photoelectric sensor of the present application can detect whether an object is approaching, or detect the liquid level. The design of the universal structure of the present application can share components, reduce production costs and improve production efficiency. Moreover, the photoelectric sensor manufactured by the above three-plate structure is thinner and suitable for use in different scenarios.

[0012] The utility model also provides a photoelectric sensor, which includes:

[0013] a base plate on which a light transmitter, a light receiver and a circuit are arranged;

[0014] A positioning plate having an avoidance groove; the positioning plate is arranged on the upper side of the bottom plate so that the avoidance groove corresponds to the optical transmitter, the optical receiver and the circuit arrangement;

[0015] The first panel is provided with a light-transmitting groove; the first panel is arranged on the upper side of the positioning plate so that the light-transmitting groove is arranged corresponding to the light emitter and the light receiver.

[0016] The utility model also provides a photoelectric sensor, which includes:

[0017] a base plate on which a light transmitter, a light receiver and a circuit are arranged;

[0018] A positioning plate having an avoidance groove; the positioning plate is arranged on the upper side of the bottom plate so that the avoidance groove corresponds to the optical transmitter, the optical receiver and the circuit arrangement;

[0019] The second panel has two light-transmitting holes. The second panel is arranged on the upper side of the positioning plate so that one of the two light-transmitting holes is arranged corresponding to the light transmitter and the other one is arranged corresponding to the light receiver.

[0020] In one embodiment, the circuit is etched on the upper side of the base plate.

[0021] In one embodiment, the photoelectric sensor further includes a shielding member, and the shielding member is disposed between the light emitter and the light receiver.

[0022] In one embodiment, an adhesive layer is provided on the lower side of the base plate.

[0023] In one embodiment, the photoelectric sensor further includes an indicator light, which is electrically connected to the circuit and is used to display the detection status of the photoelectric sensor.

[0024] In one embodiment, the indicator light is arranged on the lower side of the base plate.

[0025] In one embodiment, the positioning plate is provided with a wire passing groove;

[0026] The photoelectric sensor also includes a wire, and the wire is connected to the circuit through the wire groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0028] Figure 1 Schematic diagram of a photoelectric sensor according to Embodiment 1 of the present utility model;

[0029] Figure 2 A three-dimensional diagram of a photoelectric sensor according to Embodiment 2 of the present utility model;

[0030] Figure 3 It is an exploded view of the photoelectric sensor of Embodiment 1 and Embodiment 2 of the present utility model;

[0031] Figure 4 It is a front view of the photoelectric sensor of Example 2 of the utility model;

[0032] Figure 5 A side view of a photoelectric sensor according to Embodiment 2 of the present utility model;

[0033] Figure 6 It is a rear view of the photoelectric sensor of Example 2 of the utility model;

[0034] Figure 7 This is one of the principle schematic diagrams of the photoelectric sensor of Example 2 of the utility model;

[0035] Figure 8 This is the second schematic diagram of the principle of the photoelectric sensor of Example 2 of the utility model;

[0036] Fig. 9 It is a front view of the photoelectric sensor of Example 2 of the utility model;

[0037] Fig.10 This is one of the principle schematic diagrams of the photoelectric sensor of Example 3 of the utility model;

[0038] Fig.11 This is the second principle schematic diagram of the photoelectric sensor of Example 3 of the utility model.

[0039] Description of reference numerals:

[0040] 10 bottom plate, 110 light transmitter, 120 light receiver, 130 shielding member, 140 indicator light, 20 positioning plate, 210 avoidance groove, 220 wire groove, 30 first panel, 310 light transmission groove, 40 second panel, 410 light transmission hole DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0042] In order to better illustrate the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0043] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0044] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0045] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0047] Example 1

[0048] Combination Figure 1 and Figure 3As shown, this embodiment provides a photoelectric sensor, which includes: a base plate 10, on which a light emitter 110, a light receiver 120 and a circuit are provided; a positioning plate 20, on which a avoidance groove 210 is provided; the positioning plate 20 is arranged on the upper side of the base plate 10 so that the avoidance groove 210 corresponds to the light emitter 110, the light receiver 120 and the circuit arrangement; a panel, which includes a first panel 30 or a second panel 40, the first panel 30 is provided with a light-transmitting groove 310, and the second panel 40 is provided with two light-transmitting holes 410; the first panel 30 or the second panel 40 is arranged on the upper side of the positioning plate 20 according to functional requirements; when the first panel 30 is arranged on the upper side of the positioning plate 20, the light-transmitting groove 310 is arranged corresponding to the light emitter 110 and the light receiver 120; when the second panel 40 is arranged on the upper side of the positioning plate 20, one of the two light-transmitting holes 410 is arranged corresponding to the light emitter 110, and the other is arranged corresponding to the light receiver 120.

[0049] Compared with the prior art, the present application designs the base plate 10, positioning plate 20, light emitter 110, light receiver 120 and circuit into a universal structure. By matching the first panel 30 or the second panel 40, the photoelectric sensor of the present application can detect whether an object is approaching, or detect the liquid level; the design of the universal structure of the present application can share parts, reduce production costs and improve production efficiency, and the photoelectric sensor manufactured by the above three-plate structure is thinner and suitable for use in different scenarios (such as narrow spaces).

[0050] During the manufacturing process, the manufacturer can install and combine the base plate 10, the positioning plate 20, the light emitter 110, the light receiver 120 and the circuit into a common structure, and then select the first panel 30 or the second panel 40 for combined installation according to production requirements; for example, when there is a need to produce a photoelectric sensor (proximity sensor) for detecting whether an object is approaching, the worker only needs to install the first panel 30 on the upper side of the positioning plate 20, and set the light-transmitting groove 310 corresponding to the light emitter 110 and the light receiver 120; and when there is a need to produce a photoelectric sensor (liquid level sensor) for detecting the liquid level, the worker only needs to install the second panel 40 on the upper side of the positioning plate 20, and set one of the two light-transmitting holes 410 corresponding to the light emitter 110, and the other corresponding to the light receiver 120.

[0051] The principle of the photoelectric sensor detecting whether an object is approaching is as follows:

[0052] Combination Figure 7 and Figure 8As shown, the user installs the photoelectric sensor at a designated location. When there is no object in front of the photoelectric sensor, the light emitted by the light emitter 110 will not be reflected in the light receiver 120, and the light receiver 120 will not generate a signal, so it is judged that no object is approaching; when there is an object in front of the photoelectric sensor, the light emitted by the light emitter 110 is emitted to the surface of the object, and the surface of the object diffusely reflects the light, and the light is reflected in the light receiver 120, and the light receiver 120 generates a signal, so it is judged that an object is approaching.

[0053] It should be noted that, since the light-transmitting groove 310 is arranged corresponding to the light emitter 110 and the light receiver 120, the light emitted by the light emitter 110 is divergent, so as to increase the light directed toward the object, thereby increasing the diffusely reflected light; at the same time, the design of the light-transmitting groove 310 with the above-mentioned large-size opening can allow the light receiver 120 to receive more diffusely reflected light, so as to increase the detection accuracy.

[0054] The principle of the photoelectric sensor detecting the liquid level is as follows:

[0055] Combination Fig.10 and Fig.11 As shown, the user installs the photoelectric sensor at a designated position, and the designated position needs to be set corresponding to the isosceles triangular prism on the inner wall of the water tank; when the liquid in the water tank does not reach the designated liquid level, the light emitted by the light emitter 110 will be reflected to the light receiver 120 via the triangular prism, and the light receiver 120 generates a signal, thereby judging that the liquid in the water tank has not reached the designated liquid level; and when the liquid in the water tank reaches the designated liquid level, the light emitted by the light emitter 110 enters the liquid via the triangular prism, and the light will not be reflected to the light receiver 120, and the light receiver 120 will not generate a signal, thereby judging that the liquid in the water tank has reached the designated liquid level.

[0056] It should be noted that, since one of the two light-transmitting holes 410 is arranged corresponding to the light emitter 110, the light emitted by the light emitter 110 is directed straight toward the water tank, reducing scattered light; at the same time, the other one is arranged corresponding to the light receiver 120, so that the light receiver 120 only receives reflected light from the water tank, thereby increasing detection accuracy.

[0057] In another embodiment, the manufacturer may also provide the user with a common structure (base plate 10, positioning plate 20, light emitter 110, light receiver 120 and circuit) and an unassembled first panel 30 and second panel 40 in the product so that the user can assemble and use them according to their needs.

[0058] In one embodiment, the circuit is etched on the upper side of the base plate 10 to rationally utilize the space on the upper side of the base plate 10 and avoid adding an additional circuit board, thereby better achieving a thin design for the photoelectric sensor of this embodiment.

[0059] In one embodiment, the photoelectric sensor further includes a shielding member 130 , which is disposed between the light emitter 110 and the light receiver 120 to prevent light from the light emitter 110 from being scattered into the light receiver 120 , thereby improving detection accuracy.

[0060] In one embodiment, an adhesive layer is provided on the lower side of the base plate 10 so that the photoelectric sensor of this embodiment can be adhered to a designated position by using the adhesive layer.

[0061] In one embodiment, the photoelectric sensor also includes an indicator light 140, which is electrically connected to the circuit and is used to display the detection status of the photoelectric sensor, so that the user can confirm whether an object is detected approaching or confirm that the liquid in the water tank has reached a specified liquid level based on the lighting indication of the indicator light 140.

[0062] Furthermore, the indicator light 140 is disposed on the lower side of the bottom plate 10 so that the user can observe whether the indicator light 140 is on from the lower side of the photoelectric sensor. Moreover, the indicator light 140 and the light emitter 110 are respectively located on two sides of the photoelectric sensor to prevent the light of the indicator light 140 from affecting the detection process.

[0063] Furthermore, there are two indicator lights 140, namely a first indicator light 140 and a second indicator light 140, wherein the first indicator light 140 is set corresponding to the optical transmitter 110, and the second indicator light 140 is set corresponding to the optical receiver 120, and the detection status can be understood by observing the lighting status of the two indicator lights 140.

[0064] For example, in the process of the photoelectric sensor detecting whether an object is approaching:

[0065] The user installs the photoelectric sensor at a designated location. When there is no object in front of the photoelectric sensor, the light transmitter 110 can emit light normally, and the light receiver 120 does not generate a signal due to not receiving the light. Then, the first indicator light 140 is on and the second indicator light 140 is off, thereby determining that no object is approaching. When there is an object in front of the photoelectric sensor, the light receiver 120 generates a signal after receiving the light. Then, the first indicator light 140 is on and the second indicator light 140 is off, thereby determining that an object is approaching.

[0066] In one embodiment, the positioning plate 20 is provided with a wire groove 220; the photoelectric sensor also includes a wire, and the wire is connected to the circuit through the wire groove 220, so that the signal can be sent to the corresponding control circuit board by using the wire, so as to cooperate with other functional components (such as a water pump, etc.) to work.

[0067] It should be noted that the above-mentioned circuit design and the connection of various electrical components can use the technical means commonly used by technical personnel in this field, and this application does not limit this.

[0068] Furthermore, the bottom plate 10 , the positioning plate 20 , and the first panel 30 or the second panel 40 may be connected by glue.

[0069] Example 2

[0070] Combination Figures 2 to 8 As shown, this embodiment is basically the same as Embodiment 1, and the difference is that this embodiment provides a photoelectric sensor, which can detect whether an object is approaching; specifically, the photoelectric sensor includes: a base plate 10, on which a light emitter 110, a light receiver 120 and a circuit are provided; a positioning plate 20, on which a avoidance groove 210 is opened; the positioning plate 20 is arranged on the upper side of the base plate 10 so that the avoidance groove 210 corresponds to the light emitter 110, the light receiver 120 and the circuit arrangement; a first panel 30, on which a light-transmitting groove 310 is opened; the first panel 30 is arranged on the upper side of the positioning plate 20, so that the light-transmitting groove 310 corresponds to the light emitter 110 and the light receiver 120.

[0071] The principle of the photoelectric sensor detecting whether an object is approaching is as follows:

[0072] The user installs the photoelectric sensor at a designated location. When there is no object in front of the photoelectric sensor, the light emitted by the light transmitter 110 will not be reflected in the light receiver 120, and the light receiver 120 will not generate a signal, so it is judged that no object is approaching. When there is an object in front of the photoelectric sensor, the light emitted by the light transmitter 110 is emitted to the surface of the object, and the surface of the object diffusely reflects the light, and the light is reflected in the light receiver 120, and the light receiver 120 generates a signal, so it is judged that an object is approaching.

[0073] It should be noted that, since the light-transmitting groove 310 is arranged corresponding to the light emitter 110 and the light receiver 120, the light emitted by the light emitter 110 is divergent, so as to increase the light directed toward the object, thereby increasing the diffusely reflected light; at the same time, the design of the light-transmitting groove 310 with the above-mentioned large-size opening can allow the light receiver 120 to receive more diffusely reflected light, so as to increase the detection accuracy.

[0074] Example 3

[0075] Combination Figures 9 to 11 As shown, this embodiment is basically the same as Embodiment 1, and the difference is that this embodiment provides a photoelectric sensor, which can detect the liquid level; specifically, the photoelectric sensor includes: a base plate 10, on which a light emitter 110, a light receiver 120 and a circuit are provided; a positioning plate 20, on which a avoidance groove 210 is provided; the positioning plate 20 is arranged on the upper side of the base plate 10 so that the avoidance groove 210 corresponds to the light emitter 110, the light receiver 120 and the circuit arrangement; a second panel 40, which has two light-transmitting holes 410; the second panel 40 is arranged on the upper side of the positioning plate 20, so that one of the two light-transmitting holes 410 is arranged corresponding to the light emitter 110, and the other is arranged corresponding to the light receiver 120.

[0076] The user installs the photoelectric sensor at a designated position, which needs to correspond to the isosceles triangular prism setting on the inner wall of the water tank; when the liquid in the water tank does not reach the designated liquid level, the light emitted by the light emitter 110 will be reflected to the light receiver 120 via the triangular prism, and the light receiver 120 generates a signal, thereby determining that the liquid in the water tank has not reached the designated liquid level; and when the liquid in the water tank reaches the designated liquid level, the light emitted by the light emitter 110 enters the liquid via the triangular prism, and the light will not be reflected to the light receiver 120, and the light receiver 120 will not generate a signal, thereby determining that the liquid in the water tank has reached the designated liquid level.

[0077] It should be noted that, since one of the two light-transmitting holes 410 is arranged corresponding to the light emitter 110, the light emitted by the light emitter 110 is directed straight toward the water tank, reducing scattered light; at the same time, the other one is arranged corresponding to the light receiver 120, so that the light receiver 120 only receives reflected light from the water tank, thereby increasing detection accuracy.

[0078] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A photoelectric sensor, characterized in that: include: a base plate on which a light transmitter, a light receiver and a circuit are arranged; A positioning plate having an avoidance groove; the positioning plate is arranged on the upper side of the bottom plate so that the avoidance groove corresponds to the optical transmitter, the optical receiver and the circuit arrangement; The panel comprises a first panel or a second panel, wherein the first panel is provided with a light-transmitting groove, and the second panel is provided with two light-transmitting holes; the first panel or the second panel is arranged on the upper side of the positioning plate according to functional requirements; When the first panel is arranged on the upper side of the positioning plate, the light-transmitting groove is arranged corresponding to the light emitter and the light receiver; When the second panel is arranged on the upper side of the positioning plate, one of the two light-transmitting holes is arranged corresponding to the light transmitter, and the other one is arranged corresponding to the light receiver.

2. A photoelectric sensor, characterized in that: include: a base plate on which a light transmitter, a light receiver and a circuit are arranged; A positioning plate having an avoidance groove; the positioning plate is arranged on the upper side of the bottom plate so that the avoidance groove corresponds to the optical transmitter, the optical receiver and the circuit arrangement; The first panel is provided with a light-transmitting groove; the first panel is arranged on the upper side of the positioning plate so that the light-transmitting groove is arranged corresponding to the light emitter and the light receiver.

3. A photoelectric sensor, characterized in that: include: a base plate on which a light transmitter, a light receiver and a circuit are arranged; A positioning plate having an avoidance groove; the positioning plate is arranged on the upper side of the bottom plate so that the avoidance groove corresponds to the optical transmitter, the optical receiver and the circuit arrangement; The second panel has two light-transmitting holes. The second panel is arranged on the upper side of the positioning plate so that one of the two light-transmitting holes is arranged corresponding to the light transmitter and the other one is arranged corresponding to the light receiver.

4. The photoelectric sensor according to any one of claims 1 to 3, characterized in that: The circuit is etched on the upper side of the base plate.

5. The photoelectric sensor according to any one of claims 1 to 3, characterized in that: The photoelectric sensor further includes a shielding member, which is disposed between the light emitter and the light receiver.

6. The photoelectric sensor according to any one of claims 1 to 3, characterized in that: The lower side of the bottom plate is provided with an adhesive layer.

7. The photoelectric sensor according to any one of claims 1 to 3, characterized in that: The photoelectric sensor also includes an indicator light, which is electrically connected to the circuit and is used to display the detection status of the photoelectric sensor.

8. The photoelectric sensor according to claim 7, characterized in that: The indicator light is arranged on the lower side of the bottom plate.

9. The photoelectric sensor according to any one of claims 1 to 3, characterized in that: The positioning plate is provided with a wire passing groove; The photoelectric sensor also includes a wire, and the wire is connected to the circuit through the wire groove.

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