Limited reflection type photoelectric sensor

Abstract

The utility model discloses and provides a limited reflection type photoelectric sensor, which comprises a shell, one end of the shell is provided with a light hole, a support is embedded in the shell, a PCBA board is embedded on the surface of the support, one end of the PCBA board close to the light hole is electrically connected with a transmitting element and a receiving element, and the other end of the PCBA board close to the light hole is electrically connected with the transmitting element and the receiving element. A plurality of metal terminals are embedded in one end, far away from the light hole, of the support, and the metal terminals are electrically connected with the PCBA board. After the PCBA board, the transmitting element and the receiving element are installed on the support, the support is integrally inserted into the shell to achieve installation, the installation structure is simple, the integration level is high, the overall size is small, the adjustable lens is arranged, the detection range and precision are adjusted, and the overall integration level is high.

Description

Technical Field

[0001] The present disclosure relates to the technical field of sensors, and particularly to a defined reflection type photoelectric sensor. Background Art

[0002] A defined reflection type sensor is a non-contact measuring device that uses the principle of the photoelectric effect to detect the position and state of an object by emitting light and receiving the light reflected by the object to be detected. Different from traditional reflection type sensors, the defined reflection type sensor adopts a technology of narrowing the light beam to reduce problems such as environmental interference and light leakage, thereby improving the accuracy and stability of measurement.

[0003] Currently, the integration level of the defined reflection type sensor is not high enough, the volume is relatively large, and the installation structure is relatively complex. Utility Model Content

[0004] The present disclosure provides a defined reflection type photoelectric sensor to solve one of the technical problems recognized by the inventor.

[0005] The present disclosure provides a defined reflection type photoelectric sensor, including a housing. One end of the housing is provided with a light-transmitting hole. A bracket is embedded inside the housing. A PCBA board is embedded on the surface of the bracket. One end of the PCBA board close to the light-transmitting hole is electrically connected to a transmitting element and a receiving element. A plurality of metal terminals are embedded at one end of the bracket away from the light-transmitting hole, and the metal terminals are electrically connected to the PCBA board.

[0006] Preferably, a light-shielding plate is fixedly connected to the position of the bracket between the transmitting element and the receiving element.

[0007] Preferably, a transmitting lens is arranged between the transmitting element and the light-transmitting hole, and a receiving lens is arranged between the receiving element and the light-transmitting hole. The transmitting lens and the receiving lens are respectively arranged on both sides of the light-shielding plate, and the bottoms of the transmitting lens and the receiving lens are connected by a connecting member.

[0008] Preferably, a rack is fixedly connected to the bottom of the receiving lens. A gear is rotatably connected to the bottom of the bracket. The rack is engaged with the gear. An adjustment hole is opened at the position of the housing bottom corresponding to the gear, and a screwdriver slot is opened at the top of the gear.

[0009] Preferably, a guiding strip is fixedly connected to the bottom of the transmitting lens, and a guiding frame is fixedly connected to the bottom of the bracket. The guiding strip penetrates through the guiding frame and is in clearance fit with the guiding frame.

[0010] Preferably, positioning strips are respectively arranged on both sides of the light-shielding plate. Positioning grooves are opened on the sides of the transmitting lens and the receiving lens. The positioning grooves are movably connected to the positioning strips.

[0011] Preferably, a window lens is fixedly connected inside the light-transmitting hole.

[0012] Preferably, clamping grooves are respectively formed on both sides of the outer shell, and clamping blocks are arranged at positions of the bracket corresponding to the clamping grooves, and the clamping blocks are embedded in the clamping grooves.

[0013] Preferably, fixed mounting blocks are fixedly connected to both sides of the outer shell, and a plurality of fixed mounting holes are formed in the fixed mounting blocks.

[0014] The beneficial effects of the present disclosure mainly lie in that: after the PCBA board, the transmitting element and the receiving element are installed on the bracket in the present utility model, the whole bracket is inserted into the outer shell for installation. The installation structure is simple, the integration degree is high, the overall volume is small, and an adjustable lens is provided to adjust the detection range and accuracy, and the overall integration degree is high.

[0015] It should be understood that both the foregoing general description and the following detailed description are for the purpose of illustration and example only and are not necessarily restrictive of the present disclosure. The accompanying drawings incorporated in and constituting a part of this specification illustrate the subject matter of the present disclosure. At the same time, the specification and the drawings are used to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the sensor according to an embodiment of the present disclosure;

[0018] Figure 2 It is a bottom structural schematic diagram of the sensor according to an embodiment of the present disclosure;

[0019] Figure 3 It is an internal structural schematic diagram of the sensor according to an embodiment of the present disclosure;

[0020] Figure 4 It is a bottom structural schematic diagram of the interior of the sensor according to an embodiment of the present disclosure;

[0021] Icon: 1 - housing; 11 - light-transmitting hole; 111 - window lens; 12 - card slot; 13 - adjustment hole; 14 - fixed mounting block; 141 - fixed mounting hole; 2 - bracket; 21 - card block; 3 - PCBA board; 41 - transmitting element; 42 - receiving element; 5 - metal terminal; 6 - light-shielding plate; 61 - positioning strip; 71 - transmitting lens; 72 - receiving lens; 73 - connecting piece; 74 - rack; 75 - gear; 76 - guiding strip; 77 - guiding frame; 78 - positioning groove. Detailed implementation manner

[0022] The technical solutions of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments.

[0023] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0024] In the description of the present disclosure, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present disclosure, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0026] Embodiment

[0027] As Figures 1-4As shown in the figure, this embodiment provides a limited reflection type photoelectric sensor, including a housing 1, where the housing 1 is a plastic housing 1. One end of the housing 1 is provided with a light-transmitting hole 11 allowing light to pass through, and the other end of the housing 1 is provided with an opening allowing a bracket 2 to be inserted and installed. A bracket 2 is embedded inside the housing 1, and a PCBA board 3 is embedded on the bracket 2. One end of the PCBA board 3 close to the light-transmitting hole 11 is electrically connected to a transmitting element 41 and a receiving element 42 through a terminal block. A plurality of metal terminals 5 are embedded at one end of the bracket 2 far from the light-transmitting hole 11, and the metal terminals 5 are electrically connected to the PCBA board 3. The metal terminals 5 are used to connect external plugs for power supply and data transmission. During use, the transmitting element 41 emits light that passes through the light-transmitting hole 11 and is reflected back through the light-transmitting hole 11 after contacting the object to be measured. The receiving element 42 receives the reflected light and converts the optical signal into an electrical signal to complete the detection of the object to be measured.

[0028] Wherein, a light-shielding plate 6 is integrally formed at a position between the transmitting element 41 and the receiving element 42 on the bracket 2. The transmitting element 41 and the receiving element 42 are separated by the light-shielding plate 6 to avoid mutual influence.

[0029] In one embodiment, a transmitting lens 71 is provided between the transmitting element 41 and the light-transmitting hole 11, and a receiving lens 72 is provided between the receiving element 42 and the light-transmitting hole 11. The transmitting lens 71 and the receiving lens 72 are respectively arranged on both sides of the light-shielding plate 6, and the bottoms of the transmitting lens 71 and the receiving lens 72 are connected by a connecting member 73. The transmitting lens 71 and the receiving lens 72 are connected by the bottom connecting member 73 to form a combined lens, improving the detection accuracy of the sensor.

[0030] Furthermore, a rack 74 is fixedly connected to the bottom of the receiving lens 72, a gear 75 is rotatably connected to the bottom of the bracket 2, the rack 74 is meshed with the gear 75, an adjustment hole 13 is opened at a position corresponding to the gear 75 at the bottom of the housing 1, and a screwdriver slot is opened at the top of the gear 75. A screwdriver is inserted through the adjustment hole 13 and aligned with the screwdriver slot to rotate, driving the gear 75 to rotate. The rotation of the gear 75 drives the rack 74 to move, so that the transmitting lens 71 and the receiving lens 72 approach or move away from the transmitting element 41 and the receiving element 42, thereby adjusting the detection range and accuracy and improving the detection effect.

[0031] Furthermore, a guiding strip 76 is fixedly connected to the bottom of the emitting lens 71, and a guiding frame 77 is fixedly connected to the bottom of the bracket 2. The guiding strip 76 penetrates through the guiding frame 77 and is in clearance fit with the guiding frame 77. The guiding strip 76 and the rack 74 are arranged in parallel. The guiding strip 76 moves along with the emitting lens 71 and is limited by the guiding frame 77 to play a guiding role, making the moving positions of the emitting lens 71 and the receiving lens 72 more accurate and avoiding deviation.

[0032] Moreover, positioning strips 61 are respectively arranged on both sides of the light shielding plate 6, and positioning grooves 78 are formed on the sides of the emitting lens 71 and the receiving lens 72. The positioning grooves 78 are movably connected to the positioning strips 61. The emitting lens 71 and the receiving lens 72 are positioned by the positioning strips 61 and the positioning grooves 78, making the installation position more accurate and also playing a guiding role during the moving process to further improve the accuracy.

[0033] In one embodiment, a window lens 111 is fixedly connected inside the light-transmitting hole 11. The window lens 111 prevents external dust from entering the housing 1. The window lens 111 is made of a transparent material and does not affect the passage of light.

[0034] In one embodiment, clamping grooves 12 are respectively formed on both sides of the housing 1, and clamping blocks 21 are arranged at positions of the bracket 2 corresponding to the clamping grooves 12. The clamping blocks 21 are embedded in the clamping grooves 12. Through the clamping structure of the clamping grooves 12 and the clamping blocks 21, during installation, only need to insert the bracket 2 into the housing 1 to combine the clamping blocks 21 and the clamping grooves 12 to complete the assembly, without bolt fixation.

[0035] Furthermore, fixedly mounted blocks 14 are integrally formed and connected to both sides of the housing 1, and a plurality of fixed mounting holes 141 are formed in the fixedly mounted blocks 14. By screwing bolts into the fixed mounting holes 141, the sensor can be fixed at a specified position for operation.

[0036] The working principle of the present utility model: The metal terminal 5 is used to connect an external plug for power supply and data transmission. During use, turn the gear 75 with a screwdriver to adjust the positions of the emitting lens 71 and the receiving lens 72. During detection, the light emitted by the emitting element 41 passes through the light-transmitting hole 11 and is emitted, reflects back after contacting the object to be measured, enters through the light-transmitting hole 11, and the receiving element 42 receives the reflected light and converts the optical signal into an electrical signal to complete the detection of the object to be measured.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A limited reflection type photoelectric sensor, characterized in that: include: A shell, one end of which is provided with a light-transmitting hole, a bracket is embedded in the interior of the shell, a PCBA board is embedded on the surface of the bracket, an end of the PCBA board close to the light-transmitting hole is electrically connected to a transmitting element and a receiving element, and an end of the bracket away from the light-transmitting hole is embedded with a plurality of metal terminals, and the metal terminals are electrically connected to the PCBA board.

2. A limited reflection type photoelectric sensor according to claim 1, characterized in that: A light blocking plate is fixedly connected to a position of the bracket between the emitting element and the receiving element.

3. A limited reflection type photoelectric sensor according to claim 2, characterized in that: An emitting lens is arranged between the emitting element and the light-transmitting hole, a receiving lens is arranged between the receiving element and the light-transmitting hole, the emitting lens and the receiving lens are arranged on both sides of the light-blocking plate respectively, and the bottoms of the emitting lens and the receiving lens are connected by a connecting piece.

4. A limited reflection type photoelectric sensor according to claim 3, characterized in that: A rack is fixedly connected to the bottom of the receiving lens, a gear is rotatably connected to the bottom of the bracket, the rack is meshed with the gear, an adjustment hole is provided at the bottom of the housing corresponding to the gear, and a screwdriver slot is provided at the top of the gear.

5. The limited reflection type photoelectric sensor according to claim 4, characterized in that: A guide bar is fixedly connected to the bottom of the emitting lens, a guide frame is fixedly connected to the bottom of the bracket, and the guide bar penetrates through the guide frame and is gap-matched with the guide frame.

6. A limited reflection type photoelectric sensor according to claim 5, characterized in that: Positioning strips are respectively arranged on both sides of the light blocking plate, and positioning grooves are opened on the sides of the emitting lens and the receiving lens, and the positioning grooves are movably connected to the positioning strips.

7. The limited reflection type photoelectric sensor according to claim 1, characterized in that: A window lens is fixedly connected in the light transmission hole.

8. The limited reflection type photoelectric sensor according to claim 1, characterized in that: Card slots are respectively provided on both sides of the shell, and card blocks are arranged at positions of the bracket corresponding to the card slots, and the card blocks are embedded in the card slots.

9. The limited reflection type photoelectric sensor according to claim 1, characterized in that: The two sides of the shell are fixedly connected with fixed installation blocks, and the fixed installation blocks are provided with a plurality of fixed installation holes.

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