Photoelectric sensor

Abstract

The invention relates to the technical field of photoelectric sensors, and provides a photoelectric sensor which comprises a light emitting device and a light receiving device, the light emitting device is used for emitting light, and the light receiving device is opposite to the light emitting device and receives the light emitted by the light emitting device. Each of the light emitting device and the light receiving device comprises a shell, a light-transmitting piece and a connecting piece, an opening is formed in one side of the shell, the connecting pieces are arranged at the two ends of the light-transmitting piece in the first direction, and at least part of the peripheral side walls of the light-transmitting piece and the connecting pieces are attached to the shell, so that the opening of the shell is closed, and a sealed environment is formed in the shell; the sealing performance of the photoelectric sensor is improved, dust, water vapor, cuttings and the like outside the shell are prevented from entering the shell through the light-transmitting part and the opening of the shell, the environment of the shell is further ensured to be clean and dry, the photoelectric sensor works stably and reliably, and the connecting cost and the sealing cost of the photoelectric sensor are reduced through the arrangement of the connecting part.

Description

Technical Field

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

[0002] The photoelectric sensor has an optical channel. When an object or a person enters the optical channel, the photoelectric sensor quickly outputs an electrical signal so that the detection results of the photoelectric sensor in different scenarios can be obtained through the electrical signal.

[0003] Photoelectric sensors are commonly used in mechanical processing equipment, automated welding production lines, automated assembly production lines, etc. to protect the personal safety of operators. In these scenarios, chips, dust, water vapor, etc. can easily enter the photoelectric sensor, which can easily cause the photoelectric sensor to fail.

[0004] Therefore, there is an urgent need for a photoelectric sensor that can improve the sealing performance so that the photoelectric sensor can work stably and reliably. Summary of the invention

[0005] The present application provides a photoelectric sensor with good sealing performance, so that the photoelectric sensor can work stably and reliably.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] The present application provides a photoelectric sensor, comprising:

[0008] Light emitting device;

[0009] A light receiving device, the light receiving device and the light emitting device are arranged opposite to each other, and the light receiving device is used to receive the light emitted by the light emitting device;

[0010] The light emitting device and the light receiving device each include a housing, a light-transmitting member and a connecting member, one side of the housing has an opening; the connecting members are respectively arranged at two ends of the light-transmitting member along a first direction, at least part of the peripheral side walls of the light-transmitting member and the connecting member are both in contact with the housing and close the opening;

[0011] The first direction is along the length direction of the photosensor.

[0012] As an optional implementation, the side wall of the light-transmitting member extending along the first direction is glued to the housing; the side wall of the light-transmitting member extending along the second direction is abutted to the housing;

[0013] The second direction intersects the first direction.

[0014] As an optional implementation, the side wall of the connecting member extending along the first direction is in contact with the shell, and the side wall of the connecting member extending along the second direction is in sealing contact with the shell.

[0015] As an optional implementation, along the third direction, the light-transmitting member and the connecting member are stacked and glued;

[0016] The first direction, the second direction and the third direction are perpendicular to each other.

[0017] As an optional embodiment, the shell includes a shell body and an end cover, the shell body extends along a first direction, and the end cover is respectively connected to two ends of the shell body along the first direction; the opening extends along the first direction and passes through the shell body;

[0018] At least part of the peripheral side wall of the light-transmitting member is attached to the housing body and the end cover;

[0019] At least part of the peripheral side wall of the connecting member is in contact with the shell body and the end cover.

[0020] As an optional implementation, the end cover includes a sealing member, and the sealing member is located on a side of the end cover facing the housing body;

[0021] Along the first direction, the end of the connecting member abuts against the sealing member.

[0022] As an optional implementation, the light emitting device and the light receiving device further include a connecting terminal; an end portion of the housing along the first direction has a connecting hole, and the connecting terminal is located in the connecting hole.

[0023] As an optional implementation, the peripheral side wall of the connecting terminal and the hole wall of the connecting hole are glued together.

[0024] As an optional implementation, the housing has a receiving cavity, and the opening is connected to the receiving cavity;

[0025] The light emitting device further comprises a light emitting component, the light emitting component is located in the corresponding accommodating cavity, and the emitting end of the light emitting component faces the light-transmitting member of the light emitting device;

[0026] The light receiving device also includes a light emitting component, which is located in the corresponding accommodating cavity. The receiving end of the light receiving component faces the light-transmitting member of the light receiving device and receives the light emitted by the light emitting component.

[0027] As an optional implementation, the light emitting assembly includes a first bracket and a light emitting element; the light emitting element is connected to the first bracket in a snap-fit ​​manner;

[0028] The light receiving component comprises a second bracket and a light receiving element, and the light receiving element is connected to the second bracket in a snap-fit ​​manner; the light receiving element and the light emitting element are arranged correspondingly.

[0029] As an optional implementation, the light emitting element has a first buckle, and the light emitting element is connected to the first bracket via the first buckle;

[0030] The light receiving element has a second buckle, and the light receiving element is connected to the second bracket via the second buckle.

[0031] As an optional implementation, the first bracket is connected to the housing of the light emitting device by means of a snap connection;

[0032] The second bracket is connected to the housing of the light receiving device by means of a snap connection.

[0033] As an optional implementation, the inner wall of the housing has a slot;

[0034] In the light emitting device, the first bracket is connected to the housing through the slot;

[0035] In the optical receiving device, the second bracket is connected to the housing through the card slot.

[0036] As an optional implementation, the first bracket has a first elastic portion, and one end of the first elastic portion facing away from the first bracket abuts against the corresponding card slot;

[0037] The second bracket has a second elastic portion, and one end of the second elastic portion facing away from the second bracket abuts against the corresponding card slot.

[0038] As an optional implementation, there are multiple light emitting components, and the multiple light emitting components are arranged in sequence along the first direction, and the first brackets of adjacent light emitting components are connected in a snap-fit ​​manner;

[0039] There are a plurality of light receiving components, and the plurality of light receiving components are arranged in sequence along the first direction, and the second brackets of adjacent light receiving components are connected in a snap-fit ​​manner.

[0040] As an optional implementation, each of the optical emission components further comprises a first circuit board, which is arranged on a side of the first bracket away from the optical emission element; in each of the optical emission components, the optical emission element and the first circuit board are electrically connected; the first circuit boards of adjacent optical emission components are electrically connected;

[0041] Each of the optical receiving components also includes a second circuit board, which is arranged on a side of the second bracket away from the optical receiving element; in each of the optical receiving components, the optical receiving element and the second circuit board are electrically connected; the second circuit boards of adjacent optical receiving components are electrically connected.

[0042] As an optional implementation, the light emitting device and the light receiving device both include a flexible circuit board;

[0043] The adjacent first circuit boards are electrically connected via the flexible circuit board of the light emitting device;

[0044] The adjacent second circuit boards are electrically connected via the flexible circuit board of the light receiving device.

[0045] As an optional implementation, the light emitting device and the light receiving device each further include a first buffer, and the first buffer of the light emitting device is disposed between adjacent first brackets;

[0046] The first buffer of the light receiving device is disposed between adjacent second brackets.

[0047] As an optional implementation, the light emitting device and the light receiving device both further include a second buffer;

[0048] In the light emitting device, along the first direction, the second buffer is arranged at an end opposite to the first bracket and the housing;

[0049] In the light receiving device, along the first direction, the second buffer is disposed at an end of the second bracket opposite to the housing.

[0050] As an optional implementation, the first bracket and the first circuit board both have a first guide portion, the first guide portion of the first bracket and the first guide portion of the first circuit board correspond one to one and are fastened by threads;

[0051] The second bracket and the second circuit board both have a second guide portion, and the second guide portion of the second bracket and the second guide portion of the second circuit board correspond to each other one by one and are fastened by screw threads.

[0052] As an optional implementation manner, at least one of the light emitting device and the light receiving device has a display unit, and the display unit is used to display the working status between the light emitting device and the light receiving device.

[0053] As an optional implementation, the display unit includes a plurality of light-emitting elements, and the plurality of light-emitting elements are arranged in an array.

[0054] As an optional implementation, the photoelectric sensor further includes a fixing member; a mounting groove is provided on the shell, and the mounting groove and the opening are located on different sides of the shell; and the fixing member is movably provided in the mounting groove.

[0055] The photoelectric sensor provided by the present application includes a light emitting device and a light receiving device, wherein the light emitting device is used to emit light, and the light receiving device is opposite to the light emitting device and receives the light emitted by the light emitting device. The light emitting device and the light receiving device both include a housing, a light-transmitting member and a connecting member, one side of the housing has an opening, and the connecting members are respectively arranged at both ends of the light-transmitting member along the first direction. At least part of the peripheral side walls of the light-transmitting member and the connecting member are fitted with the housing to close the opening. The present application closes the opening of the housing by fitting the peripheral side walls of the light-transmitting member and the connecting member with the housing, so that a sealed environment is formed inside the housing, the sealing of the photoelectric sensor is improved, and dust, water vapor and chips outside the housing are prevented from entering the housing through the openings of the light-transmitting member and the housing, further ensuring that the environment inside the housing is clean and dry, so that the operation of the photoelectric sensor is stable and reliable. The connecting member forms a connection compensation effect on the light-transmitting member, and can also reduce the processing difficulty of the light-transmitting member, thereby reducing the sealing difficulty of the light-transmitting member and the housing along the first direction, which helps to reduce the connection cost and sealing cost of the photoelectric sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0057] Figure 1 A schematic diagram of a photoelectric sensor provided in an embodiment of the present application;

[0058] Figure 2 An exploded view of a portion of the structure of the photoelectric sensor provided in an embodiment of the present application;

[0059] Figure 3 AA cross-sectional view of the photoelectric sensor provided in an embodiment of the present application;

[0060] Figure 4 for Figure 3 A partial enlarged view of Ⅰ in FIG.

[0061] Figure 5 for Figure 3 A partial enlarged view of Ⅱ in FIG.

[0062] Figure 6 A schematic diagram of a light emitting component or a light receiving component of a photoelectric sensor provided in an embodiment of the present application;

[0063] Figure 7 for Figure 6 A partial enlarged view of Ⅰ in FIG.

[0064] Figure 8 A schematic diagram of the end portion of the photoelectric sensor provided in an embodiment of the present application;

[0065] Fig. 9 for Figure 6 A partial enlarged view of Ⅱ in FIG.

[0066] Fig.10 for Figure 3 A partial enlarged view of Ⅲ in FIG.

[0067] Fig.11 An internal schematic diagram of a photoelectric sensor provided in an embodiment of the present application;

[0068] Fig.12 for Fig.11 A partial enlarged view of Ⅰ in FIG.

[0069] Fig.13 A schematic diagram of the connection of a flexible circuit board in a photoelectric sensor provided in an embodiment of the present application.

[0070] Description of reference numerals:

[0071] 100-light emitting device; 110-light emitting assembly; 111-first bracket; 112-light emitting element; 1121-first buckle; 1122-third buckle; 1123-first elastic part; 113-first circuit board; 114-first guide part;

[0072] 200-light receiving device; 210-light receiving assembly; 211-second bracket; 212-light receiving element; 2121-second buckle; 2122-fourth buckle; 2123-second elastic part; 213-second circuit board; 214-second guide part;

[0073] 300-housing; 301-opening; 302-connecting hole; 303-accommodating cavity; 304-card slot; 305-installation slot; 3051-fixing member; 310-housing body; 320-first end cover; 330-second end cover; 340-sealing member;

[0074] 400-light-transmitting parts;

[0075] 500-connection terminal;

[0076] 600-Flexible circuit board;

[0077] 700-first buffer;

[0078] 800-second buffer;

[0079] 900-display unit;

[0080] 1000-Connectors. DETAILED DESCRIPTION

[0081] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than 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 this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0082] First, see Figure 1 , define the first direction as the X direction, the first direction is along the length direction of the photoelectric sensor, the second direction is the Y direction, the second direction is the width direction of the photoelectric sensor, and the third direction is the Z direction, the third direction is along the height direction of the photoelectric sensor.

[0083] The present application provides a photoelectric sensor that is a multi-axis photoelectric sensor, which can be used in production, assembly or transportation automation equipment in manufacturing factories, and can also be used in assembly lines or sorting equipment in logistics warehousing. In addition, the specific functions of the photoelectric sensor provided in the embodiment of the present application can be to monitor whether there is an object passing through a specific area, detect the external dimensions of an object, etc., and the embodiment of the present application does not make specific limitations on this.

[0084] The photoelectric sensor includes a light emitting device 100 and a light receiving device 200. The light emitting device 100 is used to emit light, and the light receiving device 200 is opposite to the light emitting device 100 and receives the light emitted by the light emitting device 100. In this way, a light path is formed between the light emitting device 100 and the light receiving device 200.

[0085] When there is no object between the light emitting device 100 and the light receiving device 200, the light receiving device 200 can normally receive the light emitted by the light emitting device 100. When there is an object between the light emitting device 100 and the light receiving device 200, the light emitted by the light emitting device 100 is blocked by the object, and the light receiving device 200 cannot receive the light, causing the electrical signal output by the light receiving device 200 to change, thereby realizing functions such as monitoring or measuring the shape and size of the object.

[0086] When applying the photoelectric sensor, the light emitting device 100 and the light receiving device 200 need to be installed at intervals so that there is space between the light emitting device 100 and the light receiving device 200 to form a multi-axis light array. The relative positions of the light emitting device 100 and the light receiving device 200 that are arranged at intervals need to be adjusted during installation to ensure that the light receiving device 200 can receive the light emitted by the light emitting device 100, so that the photoelectric sensor can realize the monitoring or measurement function.

[0087] The light emitting device 100 and the light receiving device 200 each include a housing 300, a light-transmitting member 400 and a connecting member 1000, and one side of the housing 300 has an opening 301. The connecting member 1000 is disposed at both ends of the light-transmitting member 400 along the first direction, and at least part of the peripheral sidewalls of the light-transmitting member 400 and the connecting member 1000 are attached to the housing 300 to close the opening 301.

[0088] When describing the specific assembly relationship between the housing 300 and the light-transmitting member 400 below, if the structures of the light-emitting device 100 and the light-receiving device 200 are not described separately, it means that the structures adopted by the light-emitting device 100 and the light-receiving device 200 are the same and will not be described in detail.

[0089] See also Figure 1-Figure 3 The shell 300 extends along the first direction (X), and the cross-section of the shell 300 can be circular, square, or a combination of circular and directional shapes. The embodiment of the present application does not make specific requirements for this.

[0090] Exemplarily, the cross section of the housing 300 is square, one side of the housing 300 has an opening 301, the light-transmitting member 400 and the opening 301 are adapted to each other in size and shape, and the light-transmitting member 400 is connected to the housing 300 to cover the opening 301. It can be understood that the light-transmitting member 400 of the light-emitting device 100 can transmit light out, and the light-transmitting member 400 of the light-receiving device 200 can allow light to enter.

[0091] Photoelectric sensors are often used in mechanical processing equipment, automated welding production lines, automated assembly production lines, and other scenarios to protect the personal safety of operators. In these scenarios, chips, dust, water vapor, etc. can easily enter the photoelectric sensor, which can easily cause the photoelectric sensor to fail. Therefore, there is an urgent need for a photoelectric sensor that can improve sealing so that the photoelectric sensor can work stably and reliably.

[0092] To this end, the peripheral side wall of the light-transmitting member 400 in the embodiment of the present application is fitted with the shell 300, thereby closing the opening 301 of the shell 300, so that a sealed environment is formed inside the shell 300, thereby improving the sealing of the photoelectric sensor, and preventing dust, water vapor, and chips outside the shell 300 from entering the shell 300 through the light-transmitting member 400 and the opening 301 of the shell 300, further ensuring that the environment of the shell 300 is clean and dry, so that the photoelectric sensor can operate stably and reliably.

[0093] However, the openings of the light emitting device 100 and the light receiving device 200 are used for light to pass through, and the light-transmitting member 400 only needs to block the light-transmitting portion of the opening. It is not difficult to understand that the longer the light-transmitting member 400 extends along the first direction, the greater the manufacturing cost of the light-transmitting member 400. In order to reduce the cost of the photoelectric sensor, connectors 1000 can be respectively provided at both ends of the light-transmitting member 400 along the first direction, and the length compensation of the light-transmitting member 400 is formed by the connectors 1000, so as to reduce the cost of the photoelectric sensor while meeting the light transmission requirements of the photoelectric sensor.

[0094] In some embodiments, the side wall of the light-transmitting member 400 extending in the first direction and the housing 300 can be connected by a sealant. Specifically, the side wall of the light-transmitting member 400 extending in the first direction is provided with a sealant by a dispensing device, and then the light-transmitting member 400 and the housing 300 are connected. After the sealant is cured, the side wall of the light-transmitting member 400 extending in the first direction and the housing 300 are glued together to close a portion of the opening 301.

[0095] Furthermore, the side wall of the connector 1000 extending along the first direction is bonded to the shell 300. Specifically, sealant is applied to the side wall of the connector 1000 extending along the first direction by a glue dispensing device, and then the connector 1000 and the shell 300 are connected. After the sealant is cured, the side wall of the connector 1000 extending along the first direction and the shell 300 are glued together to close the opening 301 along the first direction through the connector 1000 and the light-transmitting member 400.

[0096] In the embodiment of the present application, the side wall of the connector 1000 extending in the second direction is sealed against the housing 300. In this way, the opening 301 can be closed along the second direction by the cooperation of the connector 1000 and the housing 300, thereby improving the sealing of the photoelectric sensor. In addition, the light-transmitting member 400 and the connector 1000 and the housing 300 are all connected by sealing glue, and the glue dispensing process is easy and fast, which can improve the efficiency of installation and production of the photoelectric sensor.

[0097] It should be noted that, in the embodiment of the present application, the light-transmitting member 400 is glued to the connecting member 1000 and the housing 300 so that the protection level performance of the photoelectric sensor reaches IP67.

[0098] In some embodiments, see Figure 2 , along the third direction (Z), the light-transmitting member 400 and the connecting member 1000 are stacked and glued. In this way, the connecting member 1000 and the light-transmitting member 400 are stacked to increase the connection area between the light-transmitting member 400 and the connecting member 1000, so that the structure of the light-transmitting member 400 and the connecting member 1000 is stable. The light-transmitting member 400 and the connecting member 1000 are glued to improve the sealing of the photoelectric sensor.

[0099] In some optional embodiments, the housing 300 includes a housing body 310 and end covers, the housing body 310 extends along a first direction (X), and the end covers are respectively connected to both ends of the housing body 310 along the first direction (X).

[0100] See also Figure 1 and Figure 2 , the shell body 310 extends along the first direction (X), wherein the specific length of the shell body 310 extending along the first direction (X) is not specifically required in the embodiment of the present application. In this way, by changing the extension length of the shell body 310, the photoelectric sensor has different detection ranges. At the same time, the detection range of the photoelectric sensor is increased, and the detection of the photoelectric sensor is more accurate and stable.

[0101] Exemplarily, the opening 301 may extend along the first direction (X) and penetrate the two opposite sides of the housing body 310 along the first direction (X). There are two end caps, namely the first end cap 320 and the second end cap 330. The first end cap 320 and the second end cap 330 are spaced and opposite to each other along the first direction (X) and are located on the two opposite sides of the housing body 310 along the first direction (X). The first end cap 320 and the housing body 310 may be connected by a threaded fastener to ensure a stable connection between the first end cap 320 and the housing body 310. The second end cap 330 may also be connected to the housing body 310 by a threaded fastener to ensure a stable connection between the second end cap 330 and the housing body 310.

[0102] In the embodiment of the present application, the shapes and sizes of the light-transmitting member 400, the connecting member 1000 and the opening 301 are adapted to each other, wherein the side wall of the light-transmitting member 400 extending along the first direction (X) is glued to the shell body 310, so that the light-transmitting member 400 and the shell body 310 form a sealed connection at the mutual connection, so as to reduce the entry of external water vapor, chips, dust, etc. into the interior of the shell 300.

[0103] See also Figure 1-Figure 4 , along the first direction (X), the end surface of the left connecting member 1000 abuts against the first end cover 320 , and the end surface of the right connecting member 1000 abuts against the second end cover 330 .

[0104] In combination with the aforementioned embodiment, the first end cover 320 and the shell body 310 are connected by threaded fasteners, and the second end cover 330 and the shell body 310 are connected by threaded fasteners. It can be understood that the first end cover 320, the second end cover 330 and the shell body 310 adopt a split structure setting, which can reduce the production difficulty of the shell 300 and improve the production efficiency of the photoelectric sensor.

[0105] However, the shell 300 adopts a split design, which has certain processing errors. After the first end cover 320, the second end cover 330 and the shell body 310 are connected, a gap may be formed between the two side walls of the light-transmitting member 400 extending along the second direction (Y) and the corresponding first end cover 320 and second end cover 330, resulting in reduced sealing of the photoelectric sensor.

[0106] Therefore, in some optional embodiments, the end cap includes a sealing member 340, which is located on the side of the end cap facing the housing body 310; along the first direction (X), the end of the light-transmitting member 400 abuts against the sealing member 340. In this way, the peripheral side wall of the light-transmitting member 400 and the housing 300 maintain a fitting relationship, reducing the gap between the light-transmitting member 400 and the housing 300, thereby improving the sealing performance of the photoelectric sensor.

[0107] See also Figure 4 , a sealing member 340 is provided on the first end cap 320, and the sealing member 340 is provided on the side of the first end cap 320 facing the shell body 310, and the end of the connector 1000 along the first direction (X) abuts against the sealing member 340, thereby reducing the gap between the connector 1000 and the first end cap 320 and improving the sealing of the photoelectric sensor. Furthermore, the first end cap 320 and the shell body 310 are connected by threaded fasteners, and the sealing member 340 is sandwiched between the connector 1000 and the side of the first end cap 320 facing the shell body 310. Under the action of the external pressing force, the abutment between the connector 1000 and the sealing member 340 is reliable and stable, further improving the stability of the photoelectric sensor.

[0108] Similarly, a seal 340 is provided on the second end cap 330, and the seal 340 is provided on the side of the second end cap 330 facing the shell body 310. The end of the connector 1000 along the first direction (X) abuts against the seal 340, reducing the gap between the connector 1000 and the second end cap 330, thereby improving the sealing of the photoelectric sensor. Furthermore, the second end cap 330 and the shell body 310 are connected by threaded fasteners, and the seal 340 is sandwiched between the connector 1000 and the side of the second end cap 330 facing the shell body 310. Under the action of the external clamping force, the abutment between the connector 1000 and the seal 340 is reliable and stable, further improving the stability of the photoelectric sensor.

[0109] It is not difficult to understand that the seal 340 can be an annular member, part of the seal 340 abuts between the connector 1000 and the corresponding end cover, and part of the seal 340 abuts between the end cover and the shell body 310 to prevent external water vapor, dust, chips, etc. from entering the shell 300 at the connection between the end cover and the shell body 310, thereby further improving the sealing of the photoelectric sensor.

[0110] See also Figure 8 The housing body 310 has a connection groove, and the two side walls of the light-transmitting member 400 opposite to each other along the second direction (Y) are located in the connection groove. The two side walls of the light-transmitting member 400 are respectively glued to the corresponding connection grooves, so that the two side walls of the light-transmitting member 400 and the housing body 310 are kept in a sealed connection. The two side walls of the connecting member 1000 opposite to each other along the second direction (Y) are located in the connection groove, and the two side walls of the connecting member 1000 are respectively glued to the corresponding connection grooves, so that the two side walls of the connecting member 1000 and the housing body 310 are kept in a sealed connection.

[0111] Combination Figure 1 , Figure 3 and Figure 5 In some embodiments, at least one of the light emitting device 100 and the light receiving device 200 further includes a connection terminal 500. Exemplarily, the connection terminal 500 of the light emitting device 100 can be used to supply power to the light emitting device 100 or input / output a signal, and similarly, the connection terminal 500 of the light receiving device 200 can be used to supply power to the light receiving device 200 or input / output a signal, etc.

[0112] In some embodiments, the connection terminal 500 may be an aviation connector. When the aviation connector is used, after the two aviation connectors are plugged in, the connection between the two aviation connectors needs to be fixed by nuts. This results in many steps for connecting the aviation connectors, and after the two connection terminals 500 are fixed by nuts, the overall structure of the photoelectric sensor is enlarged, and the space occupied is increased.

[0113] In the embodiment of the present application, the end of the housing 300 along the first direction (X) has a connection hole 302, and the connection terminal 500 is located in the connection hole 302. In this way, the connection terminal 500 is placed in the connection hole 302, and the connection terminal 500 only needs to be plugged in to achieve a stable connection, so that the connection terminal 500 no longer needs to be fixed with a nut, thereby reducing the space occupied by the photoelectric sensor, helping to achieve the miniaturization of the photoelectric sensor, and at the same time reducing the cost of the photoelectric sensor.

[0114] It is not difficult to understand that the connection terminal 500 is located in the connection hole 302, and the connection terminal 500 is used to complete the electrical connection and signal transmission. Therefore, in order to prevent water vapor, chips, dust, etc. from entering the shell 300 at the connection between the connection terminal 500 and the shell 300, the peripheral side wall of the connection terminal 500 in the embodiment of the present application is glued to the hole wall of the connection hole 302. In this way, the connection terminal 500 and the hole wall of the connection hole 302 are glued to seal the connection terminal 500 and the hole wall of the connection hole 302 through the colloid, further improving the sealing performance of the photoelectric sensor.

[0115] In some embodiments, the connection hole 302 can be set on the first end cover 320 and / or the second end cover 330, and the embodiments of the present application are not limited to this. At the same time, the connection terminal 500 and the first end cover 320 and / or the second end cover 330 can be integrally formed by injection molding, which can also improve the sealing of the photoelectric sensor.

[0116] Various assembly structures of the light emitting device 100 and the light receiving device 200 are described below.

[0117] In some embodiments, the housing 300 has a receiving cavity 303, and the opening 301 is connected to the receiving cavity 303. The light emitting device 100 further includes a light emitting assembly 110, which is located in the housing 300 of the light emitting device 100 and connected to the inner wall of the receiving cavity 303 of the light emitting device 100, so as to support the light emitting assembly 110 through the inner wall of the receiving cavity 303. The light emitting assembly 110 maintains a stable connection in the housing 300 of the light emitting device 100, further making the detection result of the photoelectric sensor more accurate. In the embodiment of the present application, the emitting end of the light emitting assembly 110 faces the light-transmitting member 400 on the housing 300 of the light emitting device 100, so as to transmit the light emitted by the emitting end through the light-transmitting member 400.

[0118] The optical receiving device 200 also includes an optical receiving component 210, which is located in the housing 300 of the optical receiving device 200 and connected to the inner wall of the accommodating cavity 303 of the optical receiving device 200, so as to support the optical receiving component 210 through the inner wall of the accommodating cavity 303. The optical receiving component 210 maintains a stable connection in the housing 300 of the optical receiving device 200, further making the detection result of the photoelectric sensor more accurate. In the embodiment of the present application, the receiving end of the optical receiving component 210 faces the light-transmitting member 400 on the housing 300 of the optical receiving device 200, so as to receive the light emitted by the optical transmitting component 110 through the light-transmitting member 400.

[0119] In some embodiments, in combination Figure 6 and Figure 7 , the light emitting assembly 110 includes a first bracket 111 and a light emitting element 112, and the light emitting element 112 is connected to the first bracket 111 in a snap-fit ​​manner. It can be understood that the first bracket 111 and the light emitting element 112 are both located in the corresponding accommodation cavity 303 of the shell 300 of the light emitting device 100, so as to form a connection and support function for the first bracket 111 through the shell 300, so that the first bracket 111 maintains a stable connection in the shell 300 of the light emitting device 100. The shell 300 of the light emitting device 100 and the peripheral side wall of the light-transmitting element 400 are fitted to ensure the sealing of the light emitting device 100, forming a protective effect on the light emitting assembly 110, preventing external substances from entering the shell 300 to adversely affect the operation of the light emitting assembly 110, and further improving the working stability and reliability of the photoelectric sensor. Furthermore, the light emitting element 112 is connected to the first bracket 111 by means of a snap connection, which facilitates the connection between the light emitting element 112 and the first bracket 111 and improves the assembly efficiency of the light emitting device 100 .

[0120] The optical receiving assembly 210 includes a second bracket 211 and an optical receiving element 212, and the optical receiving element 212 is connected to the second bracket 211 in a snap-fit ​​manner. It can be understood that the second bracket 211 and the optical receiving element 212 are both located in the corresponding accommodation cavity 303 of the housing 300 of the optical receiving device 200, so as to form a connection and support function for the second bracket 211 through the housing 300, so that the second bracket 211 maintains a stable connection in the housing 300 of the optical receiving device 200. The housing 300 of the optical receiving device 200 and the peripheral side wall of the light-transmitting element 400 are fitted to ensure the sealing of the optical receiving device 200, form a protective effect on the optical receiving assembly 210, prevent external substances from entering the housing 300 to adversely affect the operation of the optical receiving assembly 210, and further improve the working stability and reliability of the photoelectric sensor. Furthermore, the optical receiving element 212 is connected to the first bracket 111 in a snap-fit ​​manner, which facilitates the connection between the optical receiving element 212 and the first bracket 111 and improves the assembly efficiency of the optical receiving device 200.

[0121] It should be noted that the light receiving elements 212 and the light emitting elements 112 in the embodiment of the present application are opposite to each other along the first direction (X), and the number and positions of the light receiving elements 212 and the light emitting elements 112 correspond one to one.

[0122] Exemplarily, the number of light emitting elements 112 is three or more, the number of light receiving elements 212 is also three or more, and the position of the light emitting element 112 on the first bracket 111 corresponds to the position of the light receiving element 212 on the second bracket 211, so that the light emitted by the light emitting element 112 is received by the corresponding light receiving element 212. The provision of multiple light receiving elements 212 and multiple light emitting elements 112 can increase the detection and measurement range of the photoelectric sensor and improve the detection and measurement effect of the photoelectric sensor.

[0123] Optionally, the light emitting element 112 has a first buckle 1121, and the light emitting element 112 is connected to the first bracket 111 through the first buckle 1121. In this way, the light emitting element 112 and the first bracket 111 can be quickly and conveniently connected through the first buckle 1121 to improve the installation efficiency of the light emitting element 112 and the first bracket 111. In addition, the connection between the first buckle of the light emitting element 112 and the first bracket 111 is a detachable connection, which is convenient for the maintenance and replacement of the light emitting element 112.

[0124] It should be noted that there may be two first clips 1121, and the two first clips 1121 are respectively arranged on opposite sides of the light emitting element 112 along the second direction (Y). In this way, the light emitting element 112 is connected to the first bracket 111 through the two first clips 1121, so that the connection between the light emitting element 112 and the first bracket 111 is more stable.

[0125] In the embodiment of the present application, the light receiving element 212 has a second buckle 2121, and the light receiving element 212 is connected to the second bracket 211 via the second buckle 2121. It should be noted that the second buckle 2121 of the light receiving element 212 has the same structure and function as the first buckle 1121 of the light emitting element 112, which will not be described in detail.

[0126] Combination Figure 1 , Figure 2 and Figure 8 In an optional embodiment, the first bracket 111 is connected to the housing 300 of the light emitting device 100 by a snap-fitting manner. The second bracket 211 is connected to the housing 300 of the light receiving device 200 by a snap-fitting manner.

[0127] In the embodiment of the present application, the housing 300 of the light emitting device 100 supports and fixes the installation of the first bracket 111, so that the connection between the first bracket 111 and the housing 300 of the light emitting device 100 is stable, further ensuring the position of the light emitting element 112 is accurate, and improving the detection accuracy and effect of the photoelectric sensor. It is not difficult to understand that the housing 300 of the light receiving device 200 supports and fixes the installation of the second bracket 211, so that the connection between the second bracket 211 and the housing 300 of the light receiving device 200 is stable, further ensuring the position of the light receiving element 212 is accurate, so that the light receiving element 212 can accurately receive the light emitted by the light emitting element 112, thereby improving the detection accuracy and effect of the photoelectric sensor.

[0128] For example, see Figure 8 , the inner wall of the housing 300 has a slot 304; the slot 304 extends along the first direction (X) to accommodate part of the first bracket 111. In the light emitting device 100, the first bracket 111 is connected to the housing 300 through the slot 304. In this way, the movement of the first bracket 111 along the second direction (Y) is limited by the provision of the slot 304, and the positional displacement of the first bracket 111 relative to the housing 300 of the light emitting device 100 can be avoided during the use of the photoelectric sensor, so as to ensure the working reliability of the photoelectric sensor. At the same time, during the installation process, the first bracket 111 can slide relative to the housing 300 along the first direction (X) through the slot 304, which facilitates the installation and removal of the first bracket 111.

[0129] It should be noted that the second bracket 211 is connected to the housing 300 through the card slot 304. In this way, the movement of the second bracket 211 along the second direction (Y) is limited by the provision of the card slot 304, and the positional displacement of the second bracket 211 relative to the housing 300 of the light receiving device 200 can be avoided during the use of the photoelectric sensor, so as to ensure the working reliability of the photoelectric sensor. At the same time, during the installation process, the second bracket 211 can slide relative to the housing 300 along the first direction (X) through the card slot 304, which facilitates the installation and removal of the second bracket 211.

[0130] During the installation of the first bracket 111, in order to stabilize the sliding process of the first bracket 111 relative to the slot 304 along the first direction (X) and reduce the shaking caused by the fitting gap between the first bracket 111 and the slot 304, the first bracket 111 in the embodiment of the present application has a first elastic portion 1123, and the end of the first elastic portion 1123 facing away from the first bracket 111 abuts against the corresponding slot 304.

[0131] Specific, combined Figure 6-Figure 8The first elastic part 1123 is disposed on the first bracket 111, protruding relative to a part of the wall surface of the first bracket 111, and the side of the first elastic part 1123 facing away from the first bracket 111 elastically abuts against the wall of the slot 304. In this way, when the first bracket 111 slides relative to the slot 304 along the first direction (X), the first elastic part 1123 will form a damping effect on the sliding of the first bracket 111 along the first direction (X) when entering the slot 304, so that the sliding of the first bracket 111 relative to the slot 304 is stable. In addition, through the provision of the first elastic part 1123, the first bracket 111 and the slot 304 form an interference fit, reducing the gap between the first bracket 111 and the slot 304, so that the connection between the first bracket 111 and the housing 300 is stable and reliable.

[0132] It should be noted that the first elastic portion 1123 may be located on a side wall of the first bracket 111 extending along the first direction (X), or on at least one of two opposite side walls of the first bracket 111 along the third direction (Z), which is not required in the embodiment of the present application.

[0133] The second bracket 211 in the embodiment of the present application also has a second elastic portion 2123, and one end of the second elastic portion 2123 away from the second bracket 211 abuts against the corresponding slot 304. It should be noted that the second elastic portion 2123 has the same structure and function as the first elastic portion 1123, which will not be described in detail.

[0134] In some embodiments, the profile of the end of the first elastic portion 1123 away from the first bracket 111 may be an arc surface to reduce the friction of the first bracket 111 sliding relative to the slot 304 along the first direction (X), so as to facilitate the installation and removal of the first bracket 111 and the housing 300. Correspondingly, the profile of the end of the second elastic portion 2123 away from the second bracket 211 may be an arc surface to reduce the friction of the second bracket 211 sliding relative to the slot 304 along the first direction (X), so as to facilitate the installation and removal of the second bracket 211 and the housing 300.

[0135] A single light emitting assembly 110 and a light receiving device 200 may not meet the detection width requirements of the photoelectric sensor. Therefore, in some embodiments, there are multiple light emitting assemblies 110, and the multiple light emitting assemblies 110 are arranged in sequence along the first direction (X), and the first brackets 111 of adjacent light emitting assemblies 110 are connected in a snap-fit ​​manner. There are multiple light receiving assemblies 210, and the multiple light receiving assemblies 210 are arranged in sequence along the first direction (X), and the second brackets 211 of adjacent light receiving assemblies 210 are connected in a snap-fit ​​manner.

[0136] The embodiment of the present application extends the extension length of the photoelectric sensor along the first direction (X) by disposing multiple light emitting components 110 and multiple light receiving components 210, that is, increases the detection range of the photoelectric sensor in the first direction (X), and improves the detection efficiency and detection effect of the photoelectric sensor.

[0137] It should be noted that the housing 300 of the light emitting device 100 and the housing 300 of the light receiving device 200 in the embodiment of the present application are profiles, which can be applied to photoelectric sensors with different lengths along the first direction (X). In this way, the number of photoelectric sensors used in the same detection scene can be reduced through flexible assembly and splicing of multiple light emitting components 110 and multiple light receiving components 210, thereby reducing the use cost of photoelectric sensors. As the number of photoelectric sensors is reduced, the material cost of the photoelectric sensors can be reduced while meeting the detection width requirements of the photoelectric sensors.

[0138] Exemplary, combined Figure 6 and Figure 7 , adjacent first brackets 111 are connected by a third buckle 1122, there may be two third buckles 1122, and the two third buckles 1122 are located on opposite sides of the first bracket 111 along the second direction (Y), so that the adjacent first brackets 111 are connected by the two third buckles 1122, so that the connection structure between the adjacent first brackets 111 is stable. Similarly, the second bracket 211 is provided with a fourth buckle 2122, and the structure and function of the fourth buckle 2122 are the same as those of the third buckle 1122, which will not be described in detail.

[0139] In some embodiments, each optical emission assembly 110 further includes a first circuit board 113, which is disposed on a side of the first bracket 111 away from the optical emission element 112, so that the first circuit board 113 is installed and supported by the first bracket 111, so that the first circuit board 113 and the first are stably and reliably connected. In each optical emission assembly 110, the optical emission element 112 and the first circuit board 113 are electrically connected, and the first circuit board 113 and the optical emission element 112 are electrically connected and can transmit signals. The first circuit boards 113 of adjacent optical emission assemblies 110 are electrically connected, that is, the adjacent first circuit boards 113 are electrically connected and can transmit signals.

[0140] It is not difficult to understand that, compared with the photoelectric sensor that sets up multiple independent light emitting components 110 along the first direction (X), the embodiment of the present application has different detection lengths by splicing multiple light emitting components 110 in an independent light emitting device 100 along the first direction (X), thereby improving the detection range of the photoelectric sensor. Multiple light emitting components 110 can transmit signals, and the output and / or input of signals can be completed through a connecting terminal 500, so that the number of connecting terminals 500 can be reduced, thereby reducing the material cost.

[0141] In the embodiment of the present application, each optical receiving component 210 also includes a second circuit board 213, which is arranged on the side of the second bracket 211 away from the optical receiving element 212; in each optical receiving component 210, the optical receiving element 212 and the second circuit board 213 are electrically connected; the second circuit boards 213 of adjacent optical receiving components 210 are electrically connected.

[0142] Compared with the photoelectric sensor that sets multiple independent light receiving components 210 along the first direction (X), the embodiment of the present application has different detection lengths by splicing multiple light receiving components 210 in an independent light receiving device 200 along the first direction (X), thereby improving the detection range of the photoelectric sensor. Multiple light receiving components 210 can transmit signals, and the output and / or input of signals can be completed through a connecting terminal 500, so that the number of connecting terminals 500 can be reduced, thereby reducing the material cost.

[0143] See also Fig.13 In some embodiments, the light emitting device 100 and the light receiving device 200 both include a flexible circuit board 600; adjacent first circuit boards 113 are electrically connected through the flexible circuit board 600 of the light emitting device 100; and adjacent second circuit boards 213 are electrically connected through the flexible circuit board 600 of the light receiving device 200.

[0144] It is not difficult to understand that the multiple first circuit boards 113 corresponding to the multiple light emitting devices 100 are arranged in sequence along the first direction (X), and position deviations will inevitably occur between the multiple first circuit boards 113. The embodiment of the present application connects the adjacent first circuit boards 113 through a flexible circuit board 600, which can effectively absorb the position deviations between the circuit boards while ensuring the electrical conduction of the adjacent first circuit boards 113, and ensure the stability of signal transmission. Furthermore, the thickness of the flexible circuit board 600 is small. The embodiment of the present application adopts the flexible circuit board 600. Due to its small thickness and high integration, it can reduce the space occupied by the photoelectric sensor compared to the printed circuit board, which is conducive to the miniaturization and lightweight of the photoelectric sensor.

[0145] In some embodiments, the thickness of the flexible circuit board 600 may be 0.15 mm.

[0146] It should be noted that the connection structure and function of the flexible circuit board 600 in the optical receiving device 200 are the same as those in the optical transmitting device 100 , and will not be described in detail.

[0147] Optionally, the light emitting device 100 and the light receiving device 200 both further include a first buffer 700 , and the first buffer 700 of the light emitting device 100 is disposed between adjacent first brackets 111 . The first buffer 700 of the light receiving device 200 is disposed between adjacent second brackets 211 .

[0148] Combination Figure 3 , Figure 6 , Figure 7 , Fig.10 In the light emitting device 100, adjacent first brackets 111 are connected by the third buckle 1122. However, there is inevitably a gap between two adjacent first brackets 111, which causes the first bracket 111 to be easily disconnected when the first bracket 111 slides into the housing 300 along the first direction (X). Therefore, the first buffer 700 is arranged between the adjacent first brackets 111, and the first buffer 700 is respectively abutted against the corresponding first bracket 111 on the opposite sides along the first direction (X). By setting the first buffer 700 and filling the gap between the adjacent first brackets 111, the adjacent first brackets 111 are kept stably connected during the installation process, thereby improving the structural stability of the light emitting device 100, facilitating the installation of the light emitting device 100, and improving the installation efficiency.

[0149] It should be noted that the structure and function of the first buffer member 700 in the optical receiving device 200 are the same as those of the first buffer member 700 in the optical transmitting device 100 , and thus will not be described in detail.

[0150] Combination Figure 3 , Figure 4 In some embodiments, the light emitting device 100 and the light receiving device 200 both further include a second buffer 800 ; in the light emitting device 100 , along the first direction (X), the second buffer 800 is disposed at an end opposite to the first bracket 111 and the housing 300 .

[0151] It is not difficult to understand that in the embodiment of the present application, the first bracket 111 slides into the housing 300 along the first direction (X). And along the first direction (X), one end of the first bracket 111 abuts against the first end cover 320, and the second buffer 800 is arranged between the other end of the first bracket 111 and the second end cover 330. The second buffer 800 can adjust the distance between the first bracket 111 and the housing 300 and ensure the correct installation of the first bracket 111 under the joint action of the second end cover 330 and the second buffer 800, thereby improving the positioning accuracy of the photoelectric sensor and the detection effect of the photoelectric sensor.

[0152] It should be noted that in the optical receiving device 200, along the first direction (X), the second buffer 800 is disposed at an end opposite to the second bracket 211 and the housing 300. The structure and function of the second buffer 800 in the optical receiving device 200 are the same as those of the second buffer 800 in the optical emitting device 100, and will not be described in detail.

[0153] In some embodiments, the first buffer member 700 and the second buffer member 800 may both be made of silicone or the like.

[0154] Combination Figure 6 , Figure 8 , Fig. 9 , a light emitting element 112 is arranged on one side of the first bracket 111 along the third direction (Z), and a first circuit board 113 is arranged on the other side. The first bracket 111 and the first circuit board both have a first guide portion 114, and the first guide portion 114 of the first bracket 111 corresponds to the first guide portion 114 of the first circuit board 113 one by one, and are fastened by screws. The first bracket 111 and the first circuit board 113 form a guiding and positioning function through the installation of the first guide portion 114, so that the first circuit board 113 is correctly installed on the first bracket 111, reducing installation errors.

[0155] Among them, the first guide portion 114 on the first circuit board 113 can be a protrusion or a groove, and the first guide on the first bracket 111 can be a corresponding groove or a protrusion. In this way, the first guide portion 114 and the second guide portion 214 on the first circuit board 113 can be connected by plugging to achieve the installation and positioning of the first circuit board 113 and the first bracket 111.

[0156] In some embodiments, the first guide portion 114 may also be provided with a threaded hole, and the first guide portion 114 of the first bracket 111 and the first guide portion 114 of the first circuit board 113 are relatively fixedly connected through threaded fasteners and threaded holes, thereby improving the reliability of the connection between the first circuit board 113 and the first bracket 111.

[0157] In the embodiment of the present application, the second bracket 211 and the second circuit board 213 both have a second guide portion 214 , and the second guide portion 214 of the second bracket 211 and the second guide portion 214 of the second circuit board 213 correspond one to one and are fastened by threads.

[0158] It should be noted that the structure and function of the second guide portion 214 are the same as those of the first guide portion 114 , which will not be described in detail.

[0159] Combination Figure 1-Figure 3 , Fig. 9 , Figure 10-12 In some embodiments, at least one of the light emitting device 100 and the light receiving device 200 has a display unit 900 , and the display unit 900 is used to display the working status between the light emitting device 100 and the light receiving device 200 .

[0160] The working state in the embodiment of the present application includes at least one of an alignment state and a working state between the light emitting device 100 and the light receiving device 200 .

[0161] It should be noted that the display unit 900 may be provided only on the light emitting device 100 or the light receiving device 200, or the display unit 900 may be provided on both the light emitting device 100 and the light receiving device 200, and the embodiment of the present application does not make specific requirements for this. In addition, the display unit 900 may display the working status of at least one of the light emitting device 100 and the light receiving device 200 through characters, colors, etc.

[0162] Exemplarily, the display unit 900 may display a single character or multiple characters, wherein a single character may be, for example, 1, 2, etc., and multiple characters may be, for example, E1, E2, etc., and the embodiment of the present application does not make specific requirements for this.

[0163] In some embodiments, the display unit 900 includes a plurality of light-emitting elements, and the plurality of light-emitting elements are arranged in an array, for example, the plurality of light-emitting elements are arranged in an "8" shape.

[0164] Optionally, the light-emitting element may be a digital tube or a digital lamp. Compared with the digital tube, the digital lamp has a smaller structure size, which helps to reduce the space occupied by the photoelectric sensor and also reduces the cost of the photoelectric sensor.

[0165] Combination Figure 3 and Figure 8 In some embodiments, a mounting groove 305 is provided on the housing 300 , and the mounting groove 305 and the opening 301 are located on different sides of the housing 300 ; the photoelectric sensor further includes a fixing member 3051 , and the fixing member 3051 is movably provided in the mounting groove 305 .

[0166] In the embodiment of the present application, the mounting groove 305 and the opening 301 are located on different side walls of the housing 300 to prevent the photoelectric sensor from affecting the normal operation of the photoelectric sensor during installation. The fixing member 3051 is movably arranged in the mounting groove 305 to facilitate the installation and fixing of the photoelectric sensor by moving the position of the fixing member 3051.

[0167] Optionally, the fixing member 3051 may be a threaded fixing member such as a T-shaped stud.

[0168] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0169] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0170] It should be easily understood that the terms “on,” “above,” and “over” in this application should be interpreted in the broadest manner, so that “on” means not only “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above something” or “over,” but also may include the meaning of “above something” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0171] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90° or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0172] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A photoelectric sensor, characterized in that: include: A light emitting device (100); a light receiving device (200), the light receiving device (200) and the light emitting device (100) being arranged opposite to each other, the light receiving device (200) being used to receive light emitted by the light emitting device (100); The light emitting device (100) and the light receiving device (200) both comprise a housing (300), a light-transmitting member (400) and a connecting member (1000); one side of the housing (300) has an opening (301); the connecting member (1000) is respectively arranged at two ends of the light-transmitting member (400) along a first direction; at least part of the peripheral side walls of the light-transmitting member (400) and the connecting member (1000) are both in contact with the housing (300) and close the opening (301); The first direction is along the length direction of the photosensor.

2. The photoelectric sensor according to claim 1, characterized in that: The side wall of the light-transmitting member (400) extending along the first direction is glued to the housing (300); the side wall of the light-transmitting member (400) extending along the second direction is abutted to the housing (300); The second direction intersects the first direction.

3. The photoelectric sensor according to claim 1, characterized in that: The side wall of the connecting piece (1000) extending along the first direction is in contact with the shell (300), and the side wall of the connecting piece (1000) extending along the second direction is in sealing contact with the shell (300).

4. The photoelectric sensor according to claim 3, characterized in that: Along the third direction, the light-transmitting member (400) and the connecting member (1000) are stacked and glued; The first direction, the second direction and the third direction are perpendicular to each other.

5. The photoelectric sensor according to any one of claims 1 to 4, characterized in that: The housing (300) comprises a housing body (310) and an end cover, the housing body (310) extending along a first direction, the end covers being respectively connected to two ends of the housing body (310) along the first direction; the opening extending along the first direction and penetrating the housing body (310); At least part of the peripheral side wall of the light-transmitting member (400) is attached to the housing body (310) and the end cover; At least part of the peripheral side wall of the connecting member (1000) is fitted to the shell body (310) and the end cover.

6. The photoelectric sensor according to claim 5, characterized in that: The end cover comprises a sealing member (340), and the sealing member (340) is located on a side of the end cover facing the housing body (310); Along the first direction, an end of the connecting member (1000) abuts against the sealing member (340).

7. The photoelectric sensor according to any one of claims 1 to 4, characterized in that: The light emitting device (100) and the light receiving device (200) further comprise a connection terminal (500); an end portion of the housing (300) along the first direction has a connection hole (302), and the connection terminal (500) is located in the connection hole (302).

8. The photoelectric sensor according to claim 6, characterized in that: The peripheral side wall of the connection terminal (500) and the hole wall of the connection hole (302) are glued together.

9. The photoelectric sensor according to any one of claims 1 to 4, characterized in that: The housing (300) has a containing cavity (303), and the opening (301) is in communication with the containing cavity (303); The light emitting device (100) further comprises a light emitting component (110), the light emitting component (110) being located in the corresponding accommodating cavity (303), and the emitting end of the light emitting component (110) facing the light-transmitting member (400) of the light emitting device (100); The light receiving device (200) further comprises a light emitting component (110), wherein the light receiving component (210) is located in the corresponding accommodating cavity (303), and a receiving end of the light receiving component (210) faces the light-transmitting member (400) of the light receiving device (200) and receives light emitted by the light emitting component (110).

10. The photoelectric sensor according to claim 9, characterized in that: The light emitting assembly (110) comprises a first bracket (111) and a light emitting element (112); the light emitting element (112) is connected to the first bracket (111) in a snap-fit ​​manner; The light receiving component (210) comprises a second bracket (211) and a light receiving element (212); the light receiving element (212) is connected to the second bracket (211) in a snap-fit ​​manner; the light receiving element (212) and the light emitting element (112) are arranged correspondingly.

11. The photoelectric sensor according to claim 10, characterized in that: The light emitting element (112) has a first buckle (1121), and the light emitting element (112) is connected to the first bracket (111) via the first buckle (1121); The light receiving element (212) has a second buckle (2121), and the light receiving element (212) is connected to the second bracket (211) via the second buckle (2121).

12. The photoelectric sensor according to claim 10, characterized in that: The first bracket (111) is connected to the housing (300) of the light emitting device (100) by means of a snap connection; The second bracket (211) is connected to the housing (300) of the light receiving device (200) by means of a snap connection.

13. The photoelectric sensor according to claim 12, characterized in that: The inner wall of the housing (300) has a slot (304); In the light emitting device (100), the first bracket (111) is connected to the housing (300) via the card slot (304); In the light receiving device (200), the second bracket (211) is connected to the housing (300) via the card slot (304).

14. The photoelectric sensor according to claim 13, characterized in that: The first bracket (111) has a first elastic portion (1123), and one end of the first elastic portion (1123) facing away from the first bracket (111) abuts against the corresponding card slot (304); The second bracket (211) has a second elastic portion (2123), and one end of the second elastic portion (2123) facing away from the second bracket (211) is in abutment with the corresponding clamping groove (304).

15. The photoelectric sensor according to claim 10, characterized in that: There are a plurality of light emitting components (110), the plurality of light emitting components (110) are arranged in sequence along a first direction, and the first brackets (111) of adjacent light emitting components (110) are connected in a snap-fit ​​manner; There are a plurality of light receiving assemblies (210), and the plurality of light receiving assemblies (210) are arranged in sequence along the first direction, and the second brackets (211) of adjacent light receiving assemblies (210) are connected in a snap-fit ​​manner.

16. The photoelectric sensor according to claim 15, characterized in that: Each of the light emitting components (110) further comprises a first circuit board (113), the first circuit board (113) being arranged on a side of the first bracket (111) facing away from the light emitting element (112); in each of the light emitting components (110), the light emitting element (112) and the first circuit board (113) are electrically connected; and the first circuit boards (113) of adjacent light emitting components (110) are electrically connected; Each of the light receiving components (210) further comprises a second circuit board (213), the second circuit board (213) being arranged on a side of the second bracket (211) facing away from the light receiving element (212); in each of the light receiving components (210), the light receiving element (212) and the second circuit board (213) are electrically connected; and the second circuit boards (213) of adjacent light receiving components (210) are electrically connected.

17. The photoelectric sensor according to claim 16, characterized in that: The light emitting device (100) and the light receiving device (200) both comprise a flexible circuit board (600); Adjacent first circuit boards (113) are electrically connected via the flexible circuit board (600) of the light emitting device (100); Adjacent second circuit boards (213) are electrically connected via the flexible circuit board (600) of the light receiving device (200).

18. The photoelectric sensor according to claim 15, characterized in that: The light emitting device (100) and the light receiving device (200) both further include a first buffer (700), and the first buffer (700) of the light emitting device (100) is arranged between adjacent first brackets (111); The first buffer member (700) of the light receiving device (200) is arranged between adjacent second brackets (211).

19. The photoelectric sensor according to claim 18, characterized in that: The light emitting device (100) and the light receiving device (200) both further include a second buffer (800); In the light emitting device (100), along a first direction, the second buffer member (800) is arranged at an end opposite to the first bracket (111) and the housing (300); In the light receiving device (200), along the first direction, the second buffer member (800) is arranged at an end opposite to the second bracket (211) and the housing (300).

20. The photoelectric sensor according to claim 16, characterized in that: The first bracket (111) and the first circuit board (113) both have a first guide portion (114); the first guide portion (114) of the first bracket (111) and the first guide portion (114) of the first circuit board (113) correspond one to one and are fastened together by means of threads; The second bracket (211) and the second circuit board (213) both have a second guide portion (214); the second guide portion (214) of the second bracket (211) and the second guide portion (214) of the second circuit board (213) correspond one to one and are fastened by threads.

21. The photoelectric sensor according to any one of claims 1 to 4, characterized in that: At least one of the light emitting device (100) and the light receiving device (200) has a display unit (900), and the display unit (900) is used to display the working status between the light emitting device (100) and the light receiving device (200).

22. The photoelectric sensor according to claim 21, characterized in that The display unit (900) comprises a plurality of light-emitting elements, and the plurality of light-emitting elements are arranged in an array.

23. The photoelectric sensor according to any one of claims 1 to 4, characterized in that: It also includes a fixing member (3051); a mounting groove (305) is provided on the shell (300), and the mounting groove (305) and the opening (301) are located on different sides of the shell (300); and the fixing member (3051) is movably arranged in the mounting groove (305).

Images