A three-dimensional safety sensor

Abstract

A three-dimensional safety sensor belonging to the technical field of sensors and comprising a housing, a lens assembly, a light emitting assembly, and a main control board, wherein an accommodation chamber is provided in a middle portion of the housing; the lens assembly is disposed in the accommodation chamber and comprises a lens mounting member and a lens body disposed on the lens mounting member; the light emitting assembly is disposed in the accommodation chamber, and the light emitting assembly comprises a light emitting lamp board on which a light emitting element is disposed; the main control board is disposed in the accommodation chamber and is used for controlling the light emitting assembly to emit light signals and for processing light signals received by the lens assembly; by providing the accommodation chamber in the housing and disposing the lens assembly, the light emitting assembly, and the main control board in the accommodation chamber, the structure of the three-dimensional safety sensor is made simpler, and the lens assembly, the light emitting assembly, and the main control board can be protected, thereby preventing external objects from coming into contact with the lens assembly, the light emitting assembly, and the main control board.

Description

A three-dimensional safety sensor Technical Field

[0001] This utility model relates to the field of sensor technology, and more specifically, to a three-dimensional safety sensor. Background Technology

[0002] The Time-of-Flight (TOF) method measures the three-dimensional structure or contour of an object by measuring the time interval between the transmission and reception of a pulse signal emitted by the instrument, or the phase generated by a laser making one round trip to the object. TOF measuring instruments can simultaneously acquire grayscale and distance images and are widely used in many fields such as motion control, behavior analysis, monitoring, autonomous driving, artificial intelligence, machine vision, and automated 3D modeling.

[0003] A typical 3D safety sensor includes a light source module and a photosensitive module. The light source module emits pulsed detection light of a specific wavelength and frequency. The detection light is reflected on the surface of the object being measured, and the reflected light is received by the photosensitive module. The photosensitive module calculates the distance information, structural information, and size information of the object being measured based on the time difference or phase difference between the emitted and received light waves.

[0004] Traditional 3D safety sensors have a relatively complex structure, which usually requires a lot of time from professionals for maintenance and repair. This increases maintenance costs and difficulty, and the complex structure also makes the repair process more complicated.

[0005] Utility Model Content

[0006] The technical problem to be solved by this utility model is that traditional three-dimensional safety sensors have a relatively complex structure, which usually requires professional personnel to spend a lot of time during maintenance and repair. This increases the maintenance cost and difficulty, and the complex structure also makes the repair process more cumbersome. In view of the above-mentioned defects of the prior art, a three-dimensional safety sensor is provided.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] Constructing a three-dimensional safety sensor includes:

[0009] A housing, wherein a receiving chamber is provided in the middle of the housing;

[0010] A lens assembly disposed within a receiving cavity and including a lens mount and a lens body disposed on the lens mount;

[0011] A light emitting assembly is disposed within the receiving cavity, the light emitting assembly including a light-emitting panel and a light-emitting element disposed on the light-emitting panel;

[0012] The main control board is disposed in the receiving cavity and is used to control the light emitting component to emit light signals and to process the light signals received by the lens component.

[0013] Optionally, the housing includes a middle shell and shell cover assemblies disposed at opposite ends of the middle shell, wherein the middle shell and the shell cover assemblies are detachably connected and enclose the receiving chamber.

[0014] Optionally, the housing assembly is provided with an assembly part, and the assembly part is equipped with a flat or arc-shaped filter.

[0015] Optionally, the housing assembly includes a front cover and a rear cover, the assembly part includes a through groove disposed in the middle of the front cover body and facing the light emitting element, and a stepped groove disposed in the through groove, the filter being installed in the stepped groove.

[0016] Optionally, the lens mounting component includes a lens plate, a lens body disposed on the lens plate, and a mounting bracket for assembling the lens plate. The mounting bracket includes a bracket body and mounting blocks disposed on opposite sides of the bracket body. The mounting blocks are provided with first connecting through holes penetrating their opposite ends. The front cover is provided with a first connecting post that cooperates with the first connecting through holes to detachably connect the mounting blocks to the front cover. A second connecting post is provided on the side of the bracket body near the lens plate. The lens plate is provided with a first connecting hole that cooperates with the second connecting post to connect the bracket body to the lens plate.

[0017] Optionally, it includes a main heat dissipation bracket and an extended heat dissipation bracket for heat dissipation treatment of the main control board. The main heat dissipation bracket includes a heat dissipation body and a heat dissipation guide disposed on one side of the heat dissipation body. One end of the heat dissipation body is provided with a heat-conducting component that contacts the main control board, and the heat dissipation guide is in close contact with the inner sidewall of the housing.

[0018] Optionally, the extended heat dissipation bracket includes a first heat dissipation plate and a second heat dissipation plate perpendicular to the first heat dissipation plate. One end of the heat dissipation main body is provided with a guide mounting groove, which is located on the same side as the heat conduction component. The first heat dissipation plate is detachably connected in the guide mounting groove, and the second heat dissipation plate is in close contact with the housing.

[0019] Optionally, the rear cover is provided with an aviation plug connecting its inner and outer sides, and the inner side of the rear cover is provided with an interface board electrically connected to the aviation plug. The interface board is electrically connected to a matching board, and the matching board is located between the main control board and the interface board.

[0020] Optionally, the main control board has multiple second connecting through holes on the side near the matching board, the matching board has a third connecting post on the side near the main control board, and a snap-fit ​​rod is provided at one end of the third connecting post near the main control board. The heat dissipation main body has a fourth connecting post on the side near the main control board, and a snap-fit ​​rod is provided on the fourth connecting post that can pass through the second connecting through holes and snap-fit ​​holes. The main control board is disposed between the third and fourth connecting posts. The matching board has positioning through holes, and the mounting bracket has positioning guide posts that are adapted to the positioning through holes.

[0021] Optionally, the inner wall of the middle shell is provided with a fixed assembly block, the front cover is provided with a first fixed assembly post, the fixed assembly block is provided with a first assembly through hole penetrating its opposite ends, the fixed assembly block is provided with a first positioning hole corresponding to the first fixed assembly post at one end near the front cover, and the first fixed assembly post is provided with a third connecting hole at one end near the first assembly block, so that the fixed assembly block and the first fixed assembly post can be connected by a connector passing through the first assembly through hole and cooperating with the third connecting hole.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. This utility model simplifies the structure by providing a receiving chamber within the housing, housing the lens assembly, light emitting assembly, and main control board within the receiving chamber, and protecting the lens assembly, light emitting assembly, and main control board from contact with external objects. The light emitting assembly can emit light pulses to the target object, which are then received by the lens assembly. The main control board calculates the distance between the target object and the 3D safety sensor based on the time difference of light flight from emission to reception. Furthermore, based on the time difference of light flight at each angle, the size and shape of the object can be measured, and it can be installed on robots for obstacle avoidance and recognition. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 is an overall isometric exploded view of this utility model.

[0026] Figure 2 is another overall isometric exploded view of this utility model.

[0027] Figure 3 is a side view of the entire utility model.

[0028] Figure 4 is a cross-sectional view of the present invention along line AA in Figure 3.

[0029] Figure 5 is an exploded side view of the present invention.

[0030] Figure 6 is an overall isometric schematic diagram of this utility model.

[0031] The reference numerals in the attached drawings are as follows: 100, housing; 110, receiving chamber; 120, front cover; 121, through groove; 122, stepped groove; 123, filter; 124, first fixed mounting post; 125, first sealing groove; 126, third connecting hole; 130, rear cover; 131, second sealing groove; 140, middle shell; 141, fixed mounting block; 141.1, first mounting through hole; 141.2, first positioning hole; 141.3, second mounting through hole; 141.4, third mounting through hole; 150, sealing assembly; 211, lens plate; 212, lens body; 213, mounting bracket; 213.1, bracket body; 213.2, Mounting block; 213.3, First connecting through hole; 213.4, Second connecting post; 213.5, Second fixed assembly post; 213.6, First connecting hole; 221, Second connecting hole; 230, Ribbon cable; 300, Light emitting component; 310, Light emitting board; 320, Light emitting element; 400, Main control board; 410, Second connecting through hole; 500, Aviation plug; 600, Interface board; 710, Heat dissipation main component; 711, Guide mounting groove; 712, Fourth connecting post; 713, Snap-fit ​​hole; 714, Third connecting through hole; 715, Guide slide groove; 720, Heat dissipation guide; 730, Heat conducting component; 800, Extended heat dissipation bracket; 810, First heat dissipation plate; 820, Second heat dissipation plate; 900, Matching plate; 910, Third connecting post; 911, Snap-fit ​​rod. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0034] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] As shown in Figures 1-6, this utility model relates to a three-dimensional safety sensor, including a housing 100, a lens assembly, a light emitting assembly 300, and a main control board 400. A receiving chamber 110 is provided in the middle of the housing 100. The lens assembly is disposed within the receiving chamber 110 and includes a lens mounting component and a lens body 212 disposed on the lens mounting component. The light emitting assembly 300 is disposed within the receiving chamber 110 and includes a light-emitting panel 310 with a light-emitting element 320 disposed on it. The main control board 400 is disposed within the receiving chamber 110 and is used to control the light emitting assembly 300 to emit light signals and to process the light signals received by the lens assembly. Furthermore, this utility model utilizes the receiving chamber 110 within the housing 100 to house the lens assembly, light emitting assembly 300, and main control board 400. The inclusion chamber 110 simplifies the structure of this invention and protects the lens assembly, light emitting assembly 300, and main control board 400, preventing external objects from contacting them. Specifically, the light emitting assembly 300 emits light pulses to the target object, which are then received by the lens assembly. The main control board 400 calculates the distance between the target object and the 3D safety sensor based on the time difference of light flight from emission to reception. It can also measure the object's size and shape based on the time difference of light flight at each angle, and can be used for obstacle avoidance and recognition on robots. In this embodiment, the middle shell 140 is square-shaped, and the front cover 120 and the rear cover 130 include a mounting plate. The mounting plate has an annular or square protrusion integrally formed on the side near the middle shell 140.

[0037] In this embodiment, the housing 100 includes a middle shell and cover assemblies disposed at opposite ends of the middle shell. The middle shell and the cover assemblies are detachably connected and enclose the receiving chamber 110. Further, the cover assembly is provided with an assembly portion, and a planar or arc-shaped filter 123 is installed within the assembly portion. Further, the cover assembly includes a front cover 120 and a rear cover. The assembly portion includes a through groove 121 disposed in the middle of the front cover 120 and facing the light emitting element 320, and a stepped groove disposed within the through groove. 122, the filter 123 is disposed in the stepped groove 122. Since the middle shell 140 is detachably connected to the shell cover assembly and forms the receiving chamber 110, and the shell cover assembly includes a front cover 120 and a rear cover 130, the user can easily separate the middle shell 140 from the front cover 120 and / or the rear cover 130 to inspect the components in the receiving chamber 110. The user can use a planar square or arc-shaped filter 123 according to their own needs. The filter 123 is bonded to the stepped groove 122 by an adhesive, such as glue.

[0038] Referring to Figures 1-5, in this embodiment, the lens mounting component includes a lens plate 211, a lens body 212 disposed on the lens plate 211, and a mounting bracket 213 for assembling the lens plate 211. The mounting bracket 213 includes a bracket body 213.1 and mounting blocks 213.2 disposed on opposite sides of the bracket body 213.1. The mounting blocks 213.2 are provided with first connecting through holes 213.3 penetrating their opposite ends. The front cover 120 is provided with a connecting through hole 213.3. A first connecting post mates with hole 213.3 to detachably connect the mounting block 213.2 to the front cover 120. A second connecting post 213.4 is provided on the side of the bracket body 213.1 near the lens plate 211. The lens plate 211 is provided with a first connecting hole 213.6 that mates with the second connecting post 213.4 to connect the bracket body 213.1 to the lens plate 211. Furthermore, by assembling the lens plate 211 onto the mounting bracket 213, it is easier to inspect and maintain the lens plate 211. When needed, the lens plate 211 can be directly removed from the mounting bracket 213 for inspection. During assembly, simply assemble the lens plate 211 onto the mounting bracket 213, and then connect the mounting bracket 213 to the front cover 120 through the first connecting through hole 213.3 on the mounting block 213.2 and the first connecting post. The first connecting through hole 213.3 is a plug-in hole, and the first connecting post is a plug-in post. The lens plate 211 can be connected to the bracket through the cooperation of the first connecting hole 213.6 and the second connecting post 213.4. The body 213.1 is connected, the first connecting hole 213.6 is a plug-in hole, the second connecting post 213.4 is a plug-in post, and multiple first connecting through holes 213.3, first connecting holes 213.6, first connecting posts and second connecting posts 213.4 are provided. The presence of plug-in holes and plug-in posts allows the lens plate 211 and the mounting bracket 213 to be quickly disassembled and assembled. Optionally, the matching plate 900 is provided with positioning through holes, and the mounting bracket 213 is provided with positioning guide posts that are adapted to the positioning through holes.

[0039] Referring to Figures 1-6, in this embodiment, the rear cover 130 is provided with an aviation plug 500 connecting its inner and outer sides. The inner side of the rear cover 130 is provided with an interface board 600 electrically connected to the aviation plug 500. The interface board 600 is electrically connected to a matching board 900. The matching board 900 is located between the main control board 400 and the interface board 600. The electrical connection between the interface board 600 and the matching board 900 ensures efficient and stable signal transmission inside the device. Optionally, the interface board 600 and the matching board 900 achieve electrical connection through the mating of a male and female connector.

[0040] Referring to Figures 1-5, this embodiment includes a main heat dissipation bracket and an extended heat dissipation bracket 800 for heat dissipation of the main control board 400. The main heat dissipation bracket includes a heat dissipation body 710 and a heat dissipation guide 720 disposed on one side of the heat dissipation body 710. One end of the heat dissipation body 710 is provided with a heat-conducting element 730 in contact with the main control board 400. The heat dissipation guide 720 is in close contact with the inner wall of the housing 100. Further, the extended heat dissipation bracket 800 includes a first heat dissipation plate 810 and a second heat dissipation plate 820 perpendicular to the first heat dissipation plate 810. One end of the heat dissipation body 710 is provided with a guide mounting groove 711. The guide mounting groove 711 and the heat-conducting element 730 are located on the same side. The first heat dissipation plate 810 is detachably connected to the guide mounting groove 711. The second heat dissipation plate 820 is in close contact with the housing 100. Specifically, the heat from the motherboard can be conducted to the heat dissipation bracket through the heat-conducting element 730. The heat from the heat dissipation main body 710 is then conducted to the heat dissipation conductor 720 and the first heat dissipation plate 810. The heat from the heat dissipation conductor 720 is conducted to the middle shell 140, the heat from the first heat dissipation plate 810 is conducted to the second heat dissipation plate 820, and the heat from the second heat dissipation plate 820 is conducted to the middle shell 140. In this embodiment, the heat conduction component 730 is square-shaped. A first heat dissipation patch is provided on the side of the heat conduction component 730 that contacts the main control board 400. A second heat dissipation patch is provided on the end of the heat dissipation conductor 720 that contacts the middle shell 140. A third heat dissipation patch is provided on the end of the second heat dissipation plate 820 that contacts the middle shell 140. A threaded hole is provided at the bottom of the guide mounting groove 711. A connecting through hole is provided on the first heat dissipation plate 810 that penetrates its opposite ends. By passing a bolt through the connecting through hole and connecting it to the first threaded hole, the first heat dissipation plate 810 is installed in the guide mounting groove 711.

[0041] Referring to Figures 1-5, in this embodiment, the main control board 400 has a plurality of second connecting through holes 410 on the side near the matching board 900, the matching board 900 has a third connecting post 910 on the side near the main control board 400, and a snap-fit ​​rod 911 is provided at one end of the third connecting post 910 near the main control board 400. The heat dissipation main body 710 has a fourth connecting post 712 on the side near the main control board 400, and the fourth connecting post 712 has a snap-fit ​​hole 713 that can snap into the snap-fit ​​rod 911. The control board 400 is positioned between the third connecting post 910 and the fourth connecting post 712. Further, during assembly, the main control board 400 is placed between the third connecting post 910 and the fourth connecting post 712. Then, the locking rod 911 passes through the second connecting through hole 410 and engages with the locking hole 713. At this time, the first connecting post and the fourth connecting post 712 clamp the main control board 400, thereby fixing it in place. Through the clamping action of the third connecting post 910 and the fourth connecting post 712, the main control board 400 receives more even support and fixation. This design effectively prevents the main control board 400 from loosening or being damaged under vibration or impact, improving the reliability and durability of the equipment. The third connecting post 910 is a copper post.

[0042] Referring to Figures 1-6, in this embodiment, a fixing assembly block 141 is provided on the inner wall of the middle shell 140, and a first fixing assembly post 124 is provided on the front cover 120. The fixing assembly block 141 has first assembly through holes 141.1 penetrating its opposite ends. A first positioning hole 141.2 corresponding to the first fixing assembly post 124 is provided at the end of the fixing assembly block 141 near the front cover 120. A third connecting hole 126 is provided at the end of the first fixing assembly post near the first assembly block. A connector can pass through the first assembly through hole 141.1 and engage with the third connecting hole 126 to connect the fixing assembly block 141 and the first fixing assembly post 124. Furthermore, the first fixing assembly post 124 can be positioned by inserting it into the first positioning hole 141.2. Subsequently, the connector can be connected to the third connecting hole 126 by passing through the first assembly through hole 141.1. The hole 126 is used to connect the fixed assembly block 141 and the first fixed assembly post 124, thereby connecting the middle shell 140 and the front cover 120. In this embodiment, the connector can be a bolt, and the third connecting hole 126 can be a threaded hole. In some embodiments, the connector can also be a plug-in rod, and the third connecting hole 126 can be a plug-in hole. The middle shell 140 is provided with a second assembly through hole 141.3 on the side near the rear cover 130. The rear cover 130 is provided with a third assembly through hole 141.4 that is adapted to the second assembly through hole 141.3. The second assembly through hole 141.3 can be a threaded hole. The bolt passes through the third assembly through hole 141.4 and connects with the second assembly through hole 141.3 to connect the rear cover 130 and the middle shell 140. In some embodiments, the second assembly through hole 141.3 can also be a plug-in hole. The plug-in post passes through the third assembly through hole 141.4 and plugs into the plug-in hole.

[0043] Referring to Figures 1-5, in this embodiment, a first sealing groove 125 is provided on the side of the front cover 120 near the middle shell 140, and a second sealing groove 131 is provided on the side of the rear cover 130 near the middle shell 140. A sealing component 150 is provided in the first sealing groove and the second sealing groove. Furthermore, the cooperation of the first sealing groove 125 and the sealing component 150 can prevent water from entering the front cover 120 and the middle shell 140 from the front cover 120. The cooperation of the second sealing groove 131 and the sealing component 150 can prevent water from entering the rear cover 130 from the front cover 120 and the middle shell 140 from the rear cover 130, ensuring the normal operation of the system. Optionally, the first sealing groove 125 and the second sealing groove 131 are annular or square.

[0044] Referring to Figures 1 and 2, in this embodiment, the lens board 211 and the matching board 900 are electrically connected by a ribbon cable 230. The ribbon cable 230 can efficiently transmit electrical signals. Connecting the lens board 211 and the matching board 900 with a ribbon cable 230 can ensure the fast and accurate transmission of key information such as video signals and control signals.

[0045] Referring to Figures 1 and 2, in this embodiment, the heat dissipation main body 710 is provided with a third connecting through hole 714 penetrating its opposite ends. A guide groove 715 is provided on the side of the heat dissipation main body 710 near the lens assembly, and the guide groove 715 communicates with the third connecting through hole 714. A second fixing mounting post 213.5 is provided on the side of the bracket body 213.1 near the heat dissipation main body 710. A second connecting hole 221 is provided at one end of the second fixing mounting post 213.5 near the heat dissipation main body 710. Furthermore, the guide groove 715 is U-shaped. When assembling the main heat dissipation bracket, the guide groove 715 on the heat dissipation main body 710 is first brought into contact with the second fixing mounting post 213.5. At this time, the main heat dissipation bracket can be moved along the guide groove 715 towards the middle shell 140, thereby improving heat dissipation. The first heat dissipation patch on the guide 720 is in close contact with the middle shell 140, preventing the first heat dissipation patch from rubbing against the middle shell 140. Then, the connector passes through the third connecting through hole 714 and connects to the second connecting hole 221. The first heat dissipation plate 810 of the extended heat dissipation bracket 800 is placed in the guide mounting groove 711. The first heat dissipation plate 810 can be moved along the guide mounting groove 711 toward the middle shell 140, so that the second heat dissipation patch on the second heat dissipation plate 820 is in close contact with the middle shell 140, preventing the second heat dissipation patch from rubbing against the middle shell 140. The groove of the guide mounting groove 711 is provided with a threaded hole. The first heat dissipation plate 810 is provided with a through hole that matches the threaded hole. The first heat dissipation plate 810 can be installed by bolts passing through the through holes and threadedly connecting to the threaded holes. The connector can be a bolt, and the second connecting hole 221 can be a threaded hole.

[0046] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A three-dimensional safety sensor, characterized by include: A housing (100), wherein a receiving chamber (110) is provided in the middle of the housing (100); A lens assembly disposed within a receiving chamber (110) and including a lens mount and a lens body (212) disposed on the lens mount; A light emitting assembly (300) is disposed within the receiving chamber (110). The light emitting assembly (300) includes a light-emitting panel (310) and a light emitting element (320) disposed on the light-emitting panel (310). The main control board (400) is disposed in the receiving chamber (110) and is used to control the light emitting assembly (300) to emit light signals and to process the light signals received by the lens assembly.

2. A volumetric safety sensor according to claim 1, wherein, The housing includes a middle shell (140) and shell cover assemblies disposed at opposite ends of the middle shell (140), the middle shell (140) and the shell cover assemblies being detachably connected and enclosing to form the receiving chamber (110).

3. A volumetric safety sensor according to claim 2, wherein, The housing assembly is provided with an assembly part, and a flat or arc-shaped filter (123) is installed inside the assembly part.

4. A volumetric safety sensor according to claim 3, wherein, The housing assembly includes a front cover (120) and a rear cover (130). The assembly includes a through groove (121) disposed in the middle of the front cover (120) and facing the light emitter (320), and a stepped groove (122) disposed in the through groove (121). The filter (123) is installed in the stepped groove (122).

5. A volumetric safety sensor according to claim 4, wherein, The lens mounting component includes a lens plate (211), a lens body (212) disposed on the lens plate (211), and a mounting bracket (213) for assembling the lens plate (211). The mounting bracket (213) includes a bracket body (213.1) and mounting blocks (213.2) disposed on opposite sides of the bracket body (213.1). The mounting blocks (213.2) are provided with first connecting through holes (213.3) penetrating their opposite ends. The front cover (120) The mounting block (213.2) is provided with a first connecting post that cooperates with the first connecting through hole (213.3) to detachably connect the mounting block (213.2) and the front cover (120). A second connecting post (213.4) is provided on the side of the bracket body (213.1) near the lens plate (211). The lens plate (211) is provided with a first connecting hole (213.6) that cooperates with the second connecting post (213.4) to connect the bracket body (213.1) and the lens plate (211).

6. A volumetric safety sensor according to claim 5, wherein, The device includes a main heat dissipation bracket and an extended heat dissipation bracket (800) for heat dissipation of the main control board (400). The main heat dissipation bracket includes a heat dissipation body (710) and a heat dissipation guide (720) disposed on one side of the heat dissipation body (710). One end of the heat dissipation body (710) is provided with a heat-conducting component (730) that contacts the main control board (400). The heat dissipation guide (720) is in close contact with the inner wall of the housing (100).

7. A volumetric safety sensor according to claim 6, wherein, The extended heat dissipation bracket (800) includes a first heat dissipation plate (810) and a second heat dissipation plate (820) perpendicular to the first heat dissipation plate (810). One end of the heat dissipation main body (710) is provided with a guide mounting groove (711). The guide mounting groove (711) and the heat conduction component (730) are located on the same side. The first heat dissipation plate (810) is detachably connected in the guide mounting groove (711), and the second heat dissipation plate (820) is in close contact with the housing (100).

8. A volumetric safety sensor according to claim 7, wherein, The rear cover (130) is provided with an aviation plug (500) connecting its inner and outer sides. The inner side of the rear cover (130) is provided with an interface board (600) electrically connected to the aviation plug (500). The interface board (600) is electrically connected to a matching board (900). The matching board (900) is located between the main control board (400) and the interface board (600).

9. A volumetric safety sensor according to claim 8, wherein, The main control board (400) has multiple second connection through holes (410) on the side near the matching board (900). The matching board (900) has a third connecting post (910) on the side near the main control board (400). The third connecting post (910) has a snap-fit ​​rod (911) at one end near the main control board (400). The heat dissipation body (710) has a fourth connecting post (712) on the side near the main control board (400). The fourth connecting post (712) has a snap-fit ​​rod (911) that can pass through the second connection through holes (410) and snap-fit ​​hole (713). The main control board (400) is located between the third connecting post (910) and the fourth connecting post (712). The matching board (900) has a positioning through hole. The mounting bracket (213) has a positioning guide post that matches the positioning through hole.

10. A volumetric safety sensor according to claim 4, wherein, The inner wall of the middle shell (140) is provided with a fixed assembly block (141), and the front cover (120) is provided with a first fixed assembly post (124). The fixed assembly block (141) is provided with a first assembly through hole (141.1) penetrating its opposite ends. The fixed assembly block (141) near the front cover (120) is provided with a first positioning hole (141.2) corresponding to the first fixed assembly post (124). The first fixed assembly post (124) near the first assembly block is provided with a third connecting hole (126). A connector can pass through the first assembly through hole (141.1) and cooperate with the third connecting hole (126) to connect the fixed assembly block (141) and the first fixed assembly post (124).

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