Photoelectric switch

Abstract

The utility model discloses a photoelectric switch, and relates to the technical field of photoelectric switches. The device comprises a U-shaped shell, wherein one surface of the U-shaped shell is fixedly connected with an end cover; a transmitter and a receiver are respectively arranged at two end parts of the U-shaped shell; a conical barrel cover is clamped on the opposite surfaces of the two ends of the U-shaped shell and between the opposite end parts of the transmitter and the receiver; one end of the U-shaped shell far away from the transmitter and the receiver is shielded; aluminum foil sheets are adhered to the peripheral inner walls of the shielding cavity and one surface of the end cover; an integrated circuit board is fixedly arranged at the bottom in the shielding cavity. According to the utility model, under the action of the conical cylinder cover, external strong light is eliminated, the aluminum foil sheet adhered to the inner wall of the shielding cavity isolates each module in the shielding cavity from external electromagnetic signals, interference caused by the external electromagnetic signals is reduced, and meanwhile, the filtering module effectively filters frequencies except specific frequencies in the power line, so that the power line is more stable and reliable. Influence caused by redundant external frequency is avoided, and normal use of the photoelectric switch is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of photoelectric switches, in particular to a photoelectric switch. Background Art

[0002] The photoelectric switch uses the obstruction or reflection of the light beam by the object being detected to convert the input current into a light signal on the transmitter. The receiver then detects the target object based on the intensity or presence of the received light, and the circuit is connected by the synchronous loop to detect the presence or absence of the object.

[0003] Existing photoelectric switches may be misoperated or fail when exposed to interference from light in an environment with strong illumination, or when multiple photoelectric switches are installed close to each other or are interfered with by other electromagnetic radiation. The anti-interference effect is poor and cannot meet the needs of actual use. Utility Model Content

[0004] The purpose of the utility model is to provide a photoelectric switch, which effectively eliminates external strong light under the action of a conical tube cover, and the aluminum foil pasted on the inner wall of the shielding cavity effectively isolates the internal modules from external electromagnetic signals, reduces the interference caused by external electromagnetic signals, and solves the above-mentioned problems.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model discloses a photoelectric switch, comprising a U-shaped shell, one surface of the U-shaped shell is fixedly connected with an end cover by bolts; two ends of the U-shaped shell are respectively provided with a transmitter and a receiver; conical cylinder covers are clamped between the opposite surfaces of the two ends of the U-shaped shell and the opposite ends of the transmitter and the receiver; a shielding cavity is provided at one end of the U-shaped shell away from the transmitter and the receiver; aluminum foil is pasted on the inner walls around the shielding cavity and one surface of the end cover; an integrated circuit board is fixedly provided at the bottom of the shielding cavity.

[0007] As a preferred technical solution of the utility model, U-shaped slots are provided on opposite surfaces of both ends of the U-shaped housing.

[0008] As a preferred technical solution of the utility model, a filter is provided at one end of the conical tube cover; the inner wall of the conical tube cover is a matte surface; and a U-shaped socket matching with the U-shaped slot is provided on the outer peripheral side of the conical tube cover.

[0009] As a preferred technical solution of the utility model, the four corners inside the U-shaped housing are all provided with threaded end sleeves matched with bolts; and one end of the U-shaped housing is provided with an inlet terminal seat.

[0010] As a preferred technical solution of the utility model, the surface of the integrated circuit board is respectively provided with a power module, an amplification module, a processing chip, a potential module and a feedback module; the input end of the power module is connected to a filter module.

[0011] The utility model has the following beneficial effects:

[0012] The utility model effectively excludes external strong light under the action of the conical tube cover, and the aluminum foil pasted on the inner wall of the shielding cavity effectively isolates the internal modules from the external electromagnetic signals, reducing the interference caused by the external electromagnetic signals. At the same time, the filter module effectively filters out the frequencies other than the specific frequency in the power line, avoiding the influence of unnecessary external frequencies, and ensuring the normal use of the photoelectric switch.

[0013] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 The utility model is a schematic diagram of the structure of a photoelectric switch.

[0016] Figure 2 A schematic diagram of the internal structure of a photoelectric switch.

[0017] Figure 3 Schematic diagram of the internal structure of the U-shaped shell.

[0018] Figure 4 It is a schematic diagram of the structure of the conical cylinder cover.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1-U-shaped housing, 2-end cover, 3-transmitter, 4-receiver, 5-conical tube cover, 6-aluminum foil, 7-bolt, 101-shielding cavity, 102-integrated circuit board, 103-U-shaped card slot, 104-power module, 105-amplification module, 106-processing chip, 107-potential module, 108-feedback module, 109-filter module, 1010-threaded end sleeve, 1011-inlet terminal seat, 501-filter, 502-U-shaped card seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment:

[0023] See also Figure 1-4 As shown, the utility model is a photoelectric switch, comprising a U-shaped shell 1, one surface of the U-shaped shell 1 is fixedly connected with an end cover 2 by bolts 7; a transmitter 3 and a receiver 4 are respectively provided at both ends of the U-shaped shell 1; a conical tube cover 5 is clamped on the opposite surfaces of the two ends of the U-shaped shell 1 and located between the opposite ends of the transmitter 3 and the receiver 4; a filter 501 is provided at one end of the conical tube cover 5; the inner wall of the conical tube cover 5 is a matte surface; a U-shaped card seat 502 matching the U-shaped card slot 103 is provided on the outer peripheral side of the conical tube cover 5; a shielding cavity 101 at one end of the U-shaped shell 1 away from the transmitter 3 and the receiver 4; aluminum foil sheets 6 are pasted on the inner walls of the shielding cavity 101 and on the surface of one of the end covers 2. In short, the aluminum foil sheets 6 pasted on the inner wall of the shielding cavity 101 effectively isolate the internal modules and external electromagnetic signals, reduce the interference caused by external electromagnetic signals, and ensure the normal use of the photoelectric switch.

[0024] An integrated circuit board 102 is fixedly provided at the bottom of the shielding cavity 101; a power supply module 104, an amplifier module 105, a processing chip 106, a potential module 107 and a feedback module 108 are respectively provided on the surface of the integrated circuit board 102; a filter module 109 is connected to the input end of the power supply module 104. In short, the source module 104 receives an electrical signal, and the filter module effectively filters out the frequencies other than the specific frequency in the power line to avoid the influence of the redundant external frequency, and adjusts under the action of the potential module 107 to obtain a stable electrical signal of a specific frequency, and the processing chip 106 converts the electrical signal into an optical signal and sends it out through the transmitter 3, and the receiver 4 receives the optical signal and converts it into an electrical signal, and the amplifier module 105 amplifies the received converted electrical signal, and the converted electrical signal is monitored under the action of the feedback module 108, and transmitted to the processing chip 106 to ensure the stability of the input electrical signal.

[0025] U-shaped slots 103 are provided on the opposite surfaces of both ends of the U-shaped shell 1; threaded end sleeves 1010 matching the bolts 7 are provided at the four corners inside the U-shaped shell 1; an inlet terminal seat 1011 is provided at one end of the U-shaped shell 1. In short, the conical tube cover 5 is plugged into the U-shaped slot 103 of the U-shaped shell through the U-shaped seat, and the end cover 2 is fixed to the U-shaped shell by the bolts 7 to fix the conical tube cover 5. The matte surface and filter 501 on the inner wall of the conical tube cover 5 effectively exclude external strong light to avoid erroneous operation of the photoelectric switch caused by external light.

[0026] A specific application of this embodiment is: the power supply module 104 receives the electrical signal, and the frequency other than the specific frequency in the power supply line is effectively filtered out through the filter module to avoid the influence of unnecessary external frequencies, and the electrical signal of a stable specific frequency is obtained by adjustment under the action of the potential module 107, and the electrical signal is converted into an optical signal through the processing chip 106 and sent out through the transmitter 3, the conical tube cover 5 is plugged into the U-shaped slot 103 of the U-shaped shell through the U-shaped card seat, and the end cover 2 is fixed to the U-shaped shell by bolts 7 to fix the conical tube cover 5, and the matte surface and the filter 501 on the inner wall of the conical tube cover 5 effectively resist the external strong Light is excluded to avoid misoperation of the photoelectric switch caused by external light. The infrared light emitted by the transmitter 3 is emitted through the filter, and the optical signal is received by the receiver 4 and converted into an electrical signal. The amplification module 105 amplifies the received converted electrical signal, and the converted electrical signal is monitored under the action of the feedback module 108 and transmitted to the processing chip 106 to ensure the stability of the input electrical signal. The aluminum foil 6 pasted on the inner wall of the shielding cavity 101 effectively isolates the internal modules and external electromagnetic signals, reduces the interference caused by external electromagnetic signals, ensures the normal use of the photoelectric switch, and has strong practicality.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A photoelectric switch, comprising a U-shaped housing (1), characterized in that: An end cover (2) is fixedly connected to one surface of the U-shaped housing (1) by means of bolts (7); a transmitter (3) and a receiver (4) are respectively provided at both ends of the U-shaped housing (1); and a conical barrel cover (5) is clamped between the opposite ends of the transmitter (3) and the receiver (4) on the opposite surfaces of the two ends of the U-shaped housing (1); The U-shaped housing (1) has a shielding cavity (101) at one end away from the transmitter (3) and the receiver (4); aluminum foil (6) is adhered to the inner walls of the shielding cavity (101) and one surface of the end cover (2); and an integrated circuit board (102) is fixedly provided at the bottom of the shielding cavity (101).

2. A photoelectric switch according to claim 1, characterized in that: U-shaped slots (103) are provided on opposite surfaces of both ends of the U-shaped housing (1).

3. A photoelectric switch according to claim 2, characterized in that: A filter (501) is provided at one end of the conical tube cover (5); the inner wall of the conical tube cover (5) is a matte surface; and a U-shaped card seat (502) matching with the U-shaped card slot (103) is provided on the outer peripheral side of the conical tube cover (5).

4. A photoelectric switch according to claim 1, characterized in that: The four corner ends inside the U-shaped housing (1) are all provided with threaded end sleeves (1010) that match the bolts (7); and one end of the U-shaped housing (1) is provided with an inlet terminal seat (1011).

5. A photoelectric switch according to claim 1, characterized in that: The surface of the integrated circuit board (102) is respectively provided with a power module (104), an amplification module (105), a processing chip (106), a potential module (107) and a feedback module (108); the input end of the power module (104) is connected to a filter module (109).

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