Photoelectric sensor

Abstract

The utility model relates to the technical field of photoelectric sensors, and discloses a photoelectric sensor, which comprises a base, a fixed seat is fixedly arranged at the top of the base, lifting structures are arranged at two ends of the top of the fixed seat, fixed grooves are rotatably arranged in the lifting structures, an emitter is fixedly arranged in one fixed groove, and a photoelectric sensor is arranged in the emitter. And a receiver opposite to the emitter is fixedly installed in the other fixing groove, the fixing grooves are provided with inserting grooves located in the bottoms of the side faces, the middles of the bottoms of the fixing grooves are connected with fixing bolts in a penetrating and threaded mode, and stretching rods are inserted into the inserting grooves. According to the photoelectric sensor, the stretching rod enables the two fixing grooves to deflect, then the emitter and the receiver are kept right opposite, the abutting screw abuts against the abutting cylinder, and inaccurate measurement caused by height deviation of the receiver and the emitter is prevented.

Description

Technical Field

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

[0002] A photoelectric sensor is an instrument that emits light, such as visible or infrared light, from a transmitter and detects the light reflected from an object through a receiver, generating an output electrical signal. Its operating principle is based on the photoelectric effect. The photoelectric effect occurs when light strikes a substance and its electrons absorb the energy of photons, generating a corresponding electrical effect. Photoelectric effects are categorized into three types based on their behavior: external photoelectric effect, internal photoelectric effect, and photovoltaic effect. Photoelectric devices include phototubes, photomultiplier tubes, photoresistors, photodiodes, phototransistors, and photocells, and are widely used in laboratories. Through-beam sensors typically consist of separate transmitters and receivers, requiring them to be mounted in opposite positions during normal use. Diffuse reflection sensors are sensors that combine both transmission and reception. Photoelectric sensors commonly used in teaching experiments consist of a mounting base, sensor housing, circuit board, optical path, light source, and receiver. The sensor is secured to the laboratory bench via the mounting base.

[0003] During the experiment, due to the difference in height of the experimental objects, the position height of the photoelectric sensor transmitter and the facing position with the receiver need to be adjusted. During the traditional adjustment, it is necessary to tighten the bolts to adjust the installation height of the photoelectric sensor or use the hydraulic rod to perform telescopic adjustment to adjust the height of the photoelectric sensor. The adjustment operation is not flexible and simple, which affects the accuracy of the sensor. When the height of the transmitter and receiver are adjusted separately, there may be a height difference between the two, which makes it impossible to maintain the position height of the photoelectric sensor transmitter and the facing position with the receiver.

[0004] To this end, we propose a photoelectric sensor. Utility Model Content

[0005] In order to make up for the shortcomings of the existing technology, the present invention provides the following technical solutions: a photoelectric sensor, including a base, a fixing seat is fixedly installed on the top of the base, and lifting structures are provided at both ends of the top of the fixing seat. A fixing groove is provided for rotation inside the lifting structure, a transmitter is fixedly installed inside one of the fixing grooves, and a receiver opposite to the transmitter is fixedly installed inside the other fixing groove. The fixing groove is provided with a plug-in groove located at the bottom of the side, a fixing bolt is threaded through the middle of the bottom of the fixing groove, and a stretching rod is plugged into the plug-in groove.

[0006] Preferably, the lifting structure includes a lifting frame fixedly installed at both ends of the top of the fixed seat, the lifting frame is rotatably connected to a lifting threaded rod inside the lifting frame, the lifting threaded rod is threadedly connected to a threaded sleeve located inside the lifting frame, and a lifting bracket is fixedly installed on the outside of the threaded sleeve, and a tightening cylinder is integrally connected to the middle of the front and rear sides of the fixing groove, and the tightening cylinder is rotatably connected to the opposite surfaces of the two lifting brackets, the diameter of the tightening cylinder is smaller than the width of the side of the lifting bracket, and the end of the tightening cylinder is integrally provided with a rotating shaft, the diameter of the rotating shaft is smaller than the diameter of the tightening cylinder, the rotating shaft is rotatably connected to the side of the lifting bracket, and the tightening cylinder.

[0007] Preferably, a locking hole is provided in the middle of the clamping cylinder, a fixing plate is fixedly installed in the middle of one side of the lifting bracket, one end of the fixing plate is threadedly connected with a clamping screw, the end of the clamping screw is in tight contact with the outer circumferential surface of the clamping cylinder, and one side of the lifting bracket is in sliding contact with the inner wall of the lifting frame.

[0008] Preferably, both ends of the fixed seat are rotatably connected with a rotating rod, one end of the rotating rod is fixedly installed with a first bevel gear located inside the fixed seat, and the other end of the rotating rod is fixedly installed with a crank located outside the fixed seat, and the bottom of the lifting threaded rod is fixedly installed with a second bevel gear located inside the fixed seat, the second bevel gear is meshed with the first bevel gear, and drives the other rotating rod to rotate synchronously through the synchronous wheel, and then drives the lifting threaded rod to rotate through the first bevel gear and the second bevel gear, the bottom of the two lifting threaded rods are rotatably connected with the top of the fixed seat, the top of the two lifting threaded rods are rotatably connected with the top of the lifting frame, and the two lifting threaded rods are arranged parallel to the inside of the lifting frame.

[0009] Preferably, a synchronous wheel located on one side of the first bevel gear is fixedly installed in the middle of the rotating rod, and the two synchronous wheels are connected by a synchronous belt transmission. The diameters of the two synchronous wheels are exactly the same, and the thickness of the synchronous wheel is not greater than the distance between the first bevel gear and the inner wall of the fixed seat.

[0010] Preferably, the stretching rod is located in the telescopic sleeve between the two fixed grooves, and the two ends of the telescopic sleeve are slidably connected with the telescopic rod. One end of the telescopic rod is fixedly plugged into the plug-in slot at the bottom of the fixed groove, and the other end of the telescopic rod is located inside the telescopic sleeve.

[0011] Preferably, the two ends of the interior of the telescopic sleeve are integrally connected with fixed blocks, and a sliding groove is provided in the middle of the telescopic rod. The fixed block is slidably connected to the inside of the sliding groove. When there is a height difference between the two fixed grooves, the straight-line distance between the two fixed grooves is increased. When the stretching rod is deflected as a whole, the telescopic rod extends from the two ends of the telescopic sleeve, increasing the overall length of the stretching rod.

[0012] Preferably, a contraction spring is provided inside the sliding groove, one end of the contraction spring is tightly arranged against the fixed block, and the other end of the contraction spring is in tight contact with one end of the sliding groove located inside the telescopic sleeve.

[0013] Preferably, the central axis of the tightening cylinder and the central axis of the tightening screw are located in the same horizontal plane, and the central axis of the locking hole is arranged parallel to the bottom of the fixing groove.

[0014] Preferably, a deflection groove is provided in the middle of the top of the fixing seat, and the width of the deflection groove is greater than the width of the fixing groove. When the fixing groove is located at the bottom, when deflection occurs under the action of the stretching rod, the bottom of the deflected fixing groove is located inside the deflection groove, preventing the fixing groove from being unable to deflect due to being too low.

[0015] Beneficial effects

[0016] Compared with the prior art, the present invention provides a photoelectric sensor with the following beneficial effects:

[0017] 1. This photoelectric sensor is equipped with a fixed slot and a stretching rod. Before adjusting the height, the telescopic rods at both ends of the stretching rod are inserted into the plug-in slots at the bottom of the two fixed slots and fixed by fixing bolts. Then, the tightening screws are loosened and the height of the fixed slots is adjusted by the lifting structure. When the heights of the two fixed slots are different, the two telescopic rods in the stretching rod automatically extend and retract, and the stretching rod causes the two fixed slots to deflect, thereby keeping the transmitter and the receiver facing each other. Then, the tightening screw is used to tighten the tightening cylinder to prevent the receiver and the transmitter from making inaccurate measurements due to height deviation.

[0018] 2. This photoelectric sensor is equipped with a lifting structure. When adjusting the height of the fixed slot, the crank is turned to rotate the rotating rod, and at the same time, the synchronous wheel drives another rotating rod to rotate synchronously, and then the first bevel gear and the second bevel gear drive the lifting threaded rod to rotate, so that the threaded sleeve and the lifting bracket are adjusted in height, thereby driving the fixed slot to be raised and lowered.

[0019] 3. This photoelectric sensor is provided with a locking hole. When the transmitter or receiver needs to be kept horizontal, the tightening screw is aligned with the locking hole, and the tightening screw is rotated so that the tightening screw is plugged into the locking hole, thereby keeping the fixing groove horizontal. The two fixing grooves are kept aligned with each other by the stretching rod and fixed by the tightening screw. After completion, the fixing bolt can be loosened and the stretching rod can be taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a structural diagram of the fixing seat of the utility model;

[0022] Figure 3 This is a schematic structural diagram of a stretching rod of the present utility model;

[0023] Figure 4 This is a structural diagram of the lifting structure of the utility model;

[0024] Figure 5 For the utility model Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 For the utility model Figure 4 Enlarged view of point B in the middle;

[0026] Figure 7 For the utility model Figure 4 Enlarged view of point C in the middle;

[0027] Figure 8 This is a schematic structural diagram of the fixing groove of the present utility model.

[0028] In the figure: 1. Base; 2. Fixed seat; 3. Lifting structure; 301. Lifting frame; 302. Lifting threaded rod; 303. Threaded sleeve; 304. Lifting bracket; 305. Rotating rod; 306. Synchronous wheel; 307. Synchronous belt; 308. First bevel gear; 309. Second bevel gear; 310. Crank; 4. Fixing slot; 5. Transmitter; 6. Receiver; 7. Plug slot; 8. Fixing bolt; 9. Tensile rod; 901. Telescopic sleeve; 902. Fixed block; 903. Telescopic rod; 904. Sliding slot; 905. Contraction spring; 10. Deflection slot; 11. Tightening cylinder; 12. Fixing plate; 13. Tightening screw; 14. Locking hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1 to 8A photoelectric sensor includes a base 1, a fixing base 2 is fixedly installed on the top of the base 1, lifting structures 3 are provided at both ends of the top of the fixing base 2, a fixing slot 4 is provided for rotation inside the lifting structure 3, a transmitter 5 is fixedly installed inside one of the fixing slots 4, a receiver 6 opposite to the transmitter 5 is fixedly installed inside the other fixing slot 4, the fixing slot 4 is provided with a plug-in slot 7 located at the bottom of the side, a fixing bolt 8 is threadedly connected through the middle of the bottom of the fixing slot 4, and a stretching rod 9 is inserted into the plug-in slot 7.

[0031] As an embodiment of the present invention, the lifting structure 3 includes a lifting frame 301 fixedly installed on the top two ends of the fixed seat 2, the lifting frame 301 is internally rotatably connected with a lifting threaded rod 302, the lifting threaded rod 302 is threadedly connected with a threaded sleeve 303 located inside the lifting frame 301, and the outside of the threaded sleeve 303 is fixedly installed with a lifting bracket 304, and the middle part of the front and rear sides of the fixing groove 4 is integrally connected with a tightening cylinder 11, and the tightening cylinder 11 is rotatably connected to the opposite surfaces of the two lifting brackets 304, and the diameter of the tightening cylinder 11 is smaller than the width of the side of the lifting bracket 304. The end of the tightening cylinder 11 is integrally provided with a rotating shaft, and the diameter of the rotating shaft is smaller than the diameter of the tightening cylinder 11. The rotating shaft is rotatably connected to the side of the lifting bracket 304, and the tightening cylinder 11.

[0032] As an embodiment of the present invention, a locking hole 14 is provided in the middle of the tightening cylinder 11, and a fixing plate 12 is fixedly installed in the middle of one side of the lifting bracket 304. One end of the fixing plate 12 is threadedly connected with a tightening screw 13, and the end of the tightening screw 13 is in tight contact with the outer circumference of the tightening cylinder 11. One side of the lifting bracket 304 is in sliding contact with the inner wall of the lifting frame 301. By setting a fixing slot 4 and a stretching rod 9, before adjusting the height, the telescopic rods 903 at both ends of the stretching rod 9 are inserted into the plug-in slot 7 at the bottom of the two fixing slots 4, fixed by the fixing bolt 8, and then loosened the tightening screw 13, and the height of the fixing slot 4 is adjusted by the lifting structure 3. When the heights of the two fixing slots 4 are different, the two telescopic rods 903 in the stretching rod 9 are automatically extended and retracted, and the stretching rod 9 causes the two fixing slots 4 to deflect, thereby making the transmitter 5 and the receiver 6 remain aligned, and then tightened with the tightening cylinder 11 through the tightening screw 13 to prevent the receiver 6 and the transmitter 5 from being inaccurately measured due to height deviation.

[0033] As an embodiment of the present utility model, the two ends of the fixed seat 2 are rotatably connected with a rotating rod 305, one end of the rotating rod 305 is fixedly installed with a first bevel gear 308 located inside the fixed seat 2, and the other end of a rotating rod 305 is fixedly installed with a crank 310 located outside the fixed seat 2, and the bottom of the lifting threaded rod 302 is fixedly installed with a second bevel gear 309 located inside the fixed seat 2, the second bevel gear 309 is engaged with the first bevel gear 308, and drives the other rotating rod 305 to rotate synchronously through the synchronous wheel 306, and then drives the lifting threaded rod 302 to rotate through the first bevel gear 308 and the second bevel gear 309, the bottom of the two lifting threaded rods 302 are rotatably connected with the top of the fixed seat 2, the top of the two lifting threaded rods 302 are rotatably connected with the top of the lifting frame 301, and the two lifting threaded rods 302 are arranged parallel to the inside of the lifting frame 301.

[0034] As an embodiment of the present invention, a synchronous wheel 306 located on one side of the first bevel gear 308 is fixedly installed in the middle of the rotating rod 305. The two synchronous wheels 306 are connected by a synchronous belt 307. The diameters of the two synchronous wheels 306 are exactly the same. The thickness of the synchronous wheel 306 is not greater than the distance between the first bevel gear 308 and the inner wall of the fixed seat 2. By setting a lifting structure 3, when adjusting the height of the fixed groove 4, the crank 310 is turned to rotate the rotating rod 305, and at the same time, the synchronous wheel 306 drives the other rotating rod 305 to rotate synchronously, and then the first bevel gear 308 and the second bevel gear 309 drive the lifting threaded rod 302 to rotate, so that the threaded sleeve 303 and the lifting bracket 304 are adjusted in height, thereby driving the fixed groove 4 to be lifted and lowered.

[0035] As an embodiment of the present invention, the stretching rod 9 is located in the telescopic sleeve 901 between the two fixed grooves 4, and the two ends of the telescopic sleeve 901 are slidably connected with the telescopic rod 903. One end of the telescopic rod 903 is fixedly plugged into the plug-in slot 7 at the bottom of the fixed groove 4, and the other end of the telescopic rod 903 is located inside the telescopic sleeve 901.

[0036] As an embodiment of the present invention, the two ends of the interior of the telescopic sleeve 901 are integrally connected with fixed blocks 902, and a sliding groove 904 is opened in the middle of the telescopic rod 903. The fixed block 902 is slidably connected to the interior of the sliding groove 904. When there is a height difference between the two fixed grooves 4, the straight-line distance between the two fixed grooves 4 is increased. When the stretching rod 9 is deflected as a whole, the telescopic rod 903 extends from the two ends of the telescopic sleeve 901, increasing the overall length of the stretching rod 9.

[0037] As an embodiment of the present invention, a contraction spring 905 is provided inside the sliding groove 904, one end of the contraction spring 905 is tightly set against the fixed block 902, and the other end of the contraction spring 905 is in tight contact with one end of the sliding groove 904 located inside the telescopic sleeve 901.

[0038] As an embodiment of the present invention, the central axis of the clamping cylinder 11 and the central axis of the clamping screw 13 are located in the same horizontal plane, and the central axis of the locking hole 14 is arranged parallel to the bottom of the fixing groove 4. By setting the locking hole 14, when the transmitter 5 or the receiver 6 needs to remain horizontal, the clamping screw 13 is aligned with the locking hole 14, and the clamping screw 13 is rotated so that the clamping screw 13 is plugged into the locking hole 14, thereby keeping the fixing groove 4 horizontal. After the two fixing grooves 4 are kept facing each other by the stretching rod 9 and fixed by the clamping screw 13, the fixing bolt 8 can be loosened and the stretching rod 9 can be taken out.

[0039] As an embodiment of the present invention, a deflection groove 10 is provided in the middle of the top of the fixing seat 2. The width of the deflection groove 10 is greater than the width of the fixing groove 4. When the fixing groove 4 is at the bottom, when deflection occurs under the action of the stretching rod 9, the bottom of the deflected fixing groove 4 is located inside the deflection groove 10, preventing the fixing groove 4 from being unable to deflect due to being too low.

[0040] It should be noted that when in use, before adjusting the height, the telescopic rods 903 at both ends of the stretching rod 9 are inserted into the plug-in slots 7 at the bottom of the two fixed slots 4 and fixed by the fixing bolts 8, and then the tightening screw 13 is loosened, and the height of the fixed slot 4 is adjusted by the lifting structure 3, and the crank 310 is turned to rotate the rotating rod 305, and at the same time, the other rotating rod 305 is driven to rotate synchronously through the synchronous wheel 306, and then the lifting threaded rod 302 is driven to rotate through the first bevel gear 308 and the second bevel gear 309, so that the threaded sleeve 303 and the lifting bracket 304 are adjusted in height, and then the fixed slot 4 is driven to be raised and lowered. When the heights of the two fixed slots 4 are different, The two telescopic rods 903 in the stretching rod 9 automatically extend and retract, and the stretching rod 9 causes the two fixing grooves 4 to deflect, thereby keeping the transmitter 5 and the receiver 6 facing each other, and then tightening the tightening screw 13 with the tightening cylinder 11 to prevent the receiver 6 and the transmitter 5 from causing inaccurate measurement due to height deviation. After the two fixing grooves 4 are kept facing each other by the stretching rod 9 and fixed by the tightening screw 13, the fixing bolt 8 can be loosened and the stretching rod 9 can be taken out. When the transmitter 5 or the receiver 6 needs to be kept horizontal, the tightening screw 13 is aligned with the locking hole 14, and the tightening screw 13 is rotated so that the tightening screw 13 is plugged into the locking hole 14, thereby keeping the fixing groove 4 horizontal.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photoelectric sensor comprising a base (1), characterized in that: A fixing seat (2) is fixedly installed on the top of the base (1), and lifting structures (3) are provided at both ends of the top of the fixing seat (2). A fixing slot (4) is rotatably provided inside the lifting structure (3), a transmitter (5) is fixedly installed inside one of the fixing slots (4), and a receiver (6) opposite to the transmitter (5) is fixedly installed inside the other fixing slot (4). The fixing slot (4) is provided with a plug-in slot (7) located at the bottom of the side, a fixing bolt (8) is threadedly connected through the middle of the bottom of the fixing slot (4), and a stretching rod (9) is plugged into the plug-in slot (7).

2. The photoelectric sensor according to claim 1, wherein: The lifting structure (3) comprises a lifting frame (301) fixedly mounted on both ends of the top of the fixing seat (2); a lifting threaded rod (302) is rotatably connected to the interior of the lifting frame (301); the lifting threaded rod (302) is threadedly connected to a threaded sleeve (303) located inside the lifting frame (301); a lifting bracket (304) is fixedly mounted on the outside of the threaded sleeve (303); a tightening cylinder (11) is integrally connected to the middle of the front and rear sides of the fixing groove (4); and the tightening cylinder (11) is rotatably connected to the opposite surfaces of the two lifting brackets (304).

3. The photoelectric sensor according to claim 2, wherein: A locking hole (14) is provided in the middle of the pressing cylinder (11), a fixing plate (12) is fixedly installed in the middle of one side of the lifting bracket (304), one end of the fixing plate (12) is threadedly connected with a pressing screw (13), the end of the pressing screw (13) is in pressing contact with the outer peripheral surface of the pressing cylinder (11), and one side of the lifting bracket (304) is in sliding contact with the inner wall of the lifting frame (301).

4. The photoelectric sensor according to claim 2, wherein: The two ends of the fixed seat (2) are rotatably connected to a rotating rod (305), one end of the rotating rod (305) is fixedly mounted with a first bevel gear (308) located inside the fixed seat (2), and the other end of the rotating rod (305) is fixedly mounted with a crank (310) located outside the fixed seat (2), and the bottom of the lifting threaded rod (302) is fixedly mounted with a second bevel gear (309) located inside the fixed seat (2), and the second bevel gear (309) is meshed with the first bevel gear (308).

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