Photoelectric switch

Abstract

The utility model relates to a photoelectric switch, which comprises a shell provided with a containing cavity, an isolation part is arranged in the containing cavity, and the containing cavity is divided into a first cavity body and a second cavity body by the isolation part; the shell comprises a first shell and a second shell which are detachably connected, the first shell and the second shell are symmetrical to each other, and the first shell and the second shell are buckled to form the containing cavity; the lens unit comprises a lens, and the lens is connected with the shell in an embedded mode so as to seal the first cavity; and the circuit board unit comprises a circuit board, and the circuit board is arranged in the second cavity. According to the utility model, assembling is carried out in a bilaterally symmetrical disassembling mode, so that the complexity of a shell mold can be reduced, and the mold cost is reduced; the combined lens is easy to disassemble and assemble and cannot be damaged, and the risk of product damage is reduced.

Description

Technical Field

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

[0002] Reflective photoelectric sensors are primarily used to trigger sensors within a certain distance to provide feedback on changes in spatial conditions, whether an object has reached a count, or other purposes. Photoelectric switches have a wide range of applications, including industrial control, automated inspection, security monitoring, medical diagnosis, and wireless communications. In industrial control, photoelectric switches can accurately locate objects and measure their speed, improving production efficiency and quality. In automated inspection, photoelectric switches can detect proximity, rotational motion, and shape. In security monitoring, photoelectric switches can detect intruders and provide alerts. In medical diagnosis, photoelectric switches can detect and diagnose biological organisms. In wireless communications, photoelectric switches can transmit and receive optical signals, improving communication speed and bandwidth. Published Chinese patent CN220323557U discloses a toroidal lens reflective photoelectric sensor comprising a housing with a composite lens detachably connected to one end. A PCB is fixedly attached to the housing. A receiving element, wiring terminals, and a transmitting element are soldered to the side of the PCB near the composite lens. A plastic cover is detachably attached to the end of the housing away from the composite lens.

[0003] The shortcomings of the existing technology are that, in the actual production process, the existing solution: 1. Due to the complex shape of the shell, many core-pulling sliders are required, which increases the cost of the mold; 2. The combination lens plus the buckle form, since the combination lens can only be made of PMMA, brings the risk that the combination lens will be damaged as long as it is repaired. Utility Model Content

[0004] To this end, the technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a photoelectric switch that adopts a left-right symmetrical disassembly method to reduce mold complexity, improve mold utilization, and increase product profits. It adopts a snap-on clamping form to avoid hot welding, reduce operating steps, improve yield and reduce costs.

[0005] In order to solve the above technical problems, the utility model provides a photoelectric switch, comprising:

[0006] A housing having a housing cavity, wherein an isolating portion is provided in the housing cavity, and the housing cavity is divided by the isolating portion into a first cavity and a second cavity; the housing comprises a first outer shell and a second outer shell that are detachably connected, the first outer shell and the second outer shell being symmetrical to each other, and the housing cavity is formed when the first outer shell and the second outer shell are buckled together;

[0007] a lens unit, comprising a lens, wherein the lens is embeddedly connected to the housing to enclose the first cavity;

[0008] The circuit board unit includes a circuit board, and the circuit board is arranged in the second cavity.

[0009] In one embodiment of the present invention, the isolation portion includes an isolation body and a first reinforcement structure connected to the isolation body, and the first reinforcement structure is arranged in the middle of the isolation body.

[0010] In one embodiment of the present invention, the isolation body includes a first isolation plate horizontally arranged on the first shell, and a second isolation plate horizontally arranged on the second shell, the first isolation plate and the second isolation plate are arranged opposite to each other, and the edge of the first isolation plate fits with the edge of the second isolation plate.

[0011] In one embodiment of the present invention, the circuit board unit further includes a connection terminal, a transmitting element and a receiving element arranged on the circuit board, the transmitting element and the receiving element are respectively located on both sides of the connection terminal, wherein the first reinforcement structure can accommodate the connection terminal.

[0012] In one embodiment of the present invention, a plug hole and a light-transmitting hole are provided on the first shell or the second shell, the plug hole is opposite to the connection terminal, and the light-transmitting hole is connected to the second cavity.

[0013] In one embodiment of the present invention, the first reinforcement structure includes a first reinforcement rib provided on the first shell, and a second reinforcement rib provided on the second shell, the first reinforcement rib is U-shaped and has an opening facing the circuit board, and the second reinforcement rib is U-shaped and has an opening facing the circuit board.

[0014] In one embodiment of the present invention, the second cavity is further provided with an elastic clamping portion for mounting the circuit board, the elastic clamping portion includes a first elastic clamping groove provided on the first shell, and a second elastic clamping groove provided on the second shell, the first elastic clamping groove and the second elastic clamping groove cooperate with each other to form an elastic space, and the edge of the circuit board is clamped in the first elastic clamping groove and the second elastic clamping groove.

[0015] In one embodiment of the present invention, the lens unit also includes a lens clipping portion arranged at the edge of the lens; the first shell is provided with a first lens clipping slot, the second shell is provided with a second lens clipping slot, and the lens clipping portion is embedded in the first lens clipping slot and the second lens clipping slot; the lens clipping portion is arranged along the circumference of the lens.

[0016] In one embodiment of the present invention, a card hole is provided on at least one side of the first shell, and a matching card buckle is provided on the same side of the second shell; or / and a card buckle is provided on at least one side of the first shell, and a matching card hole is provided on the same side of the second shell.

[0017] In one embodiment of the present invention, a positioning column is provided on at least one side of the first shell, and a matching positioning hole is provided on the same side of the second shell; or / and a positioning hole is provided on at least one side of the first shell, and a matching positioning column is provided on the same side of the second shell.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The utility model discloses a photoelectric switch, which is provided with a shell, an accommodating cavity inside the shell, an isolating portion inside the accommodating cavity, and the accommodating cavity is divided by the isolating portion to form a first cavity and a second cavity. At the same time, the shell includes a first outer shell and a second outer shell that are detachably connected, the first outer shell and the second outer shell are symmetrical to each other, and the accommodating cavity can be formed when the first outer shell and the second outer shell are buckled together; the photoelectric switch also includes a lens unit, the lens unit includes a lens, and the lens is embedded in the shell to enclose the first cavity; the photoelectric switch also includes a circuit board unit, the circuit board unit includes a circuit board, and the circuit board is arranged inside the second cavity.

[0020] The photoelectric switch of the present invention is assembled in a bilaterally symmetrical disassembly manner, thereby reducing the complexity of the housing mold and the mold cost; the combined lens is easy to disassemble and assemble and will not be damaged, reducing the risk of product damage and the complexity of assembly, improving the product yield and reducing product maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model in conjunction with the accompanying drawings, wherein:

[0022] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present utility model.

[0023] Figure 2 It is an exploded view of the overall structure of a preferred embodiment of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the first shell of a preferred embodiment of the present utility model.

[0025] Figure 4 It is a structural schematic diagram of the second shell of a preferred embodiment of the present utility model.

[0026] Figure 5It is a structural schematic diagram of a circuit board unit in a preferred embodiment of the present utility model.

[0027] Figure 6 It is a structural schematic diagram of a lens unit according to a preferred embodiment of the present invention.

[0028] Explanation of the reference numerals in the specification: 1. Shell; 11. First outer shell; 12. Second outer shell; 110. First lens slot; 111. Second lens slot; 112. Clamping hole; 113. Buckle; 116. First positioning post; 117. First positioning hole; 118. Second positioning hole; 119. Second positioning post; 120. Connecting hole; 121. Light-transmitting hole; 2. Isolation part; 21. First isolation plate; 22. Second isolation plate; 23. First reinforcing rib; 24. Second reinforcing rib; 30. PCBA; 31. Terminal block; 32. Transmitting element; 33. Receiving element; 34. First elastic slot; 35. Second elastic slot; 40. Lens; 41. Lens clamping part. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0030] Reference Figures 1 to 6 As shown, the present invention discloses a photoelectric switch, comprising a housing 1, wherein the housing 1 has a receiving cavity, wherein an isolating portion 2 is provided in the receiving cavity, and the receiving cavity is divided by the isolating portion 2 to form a first cavity and a second cavity. In detail, the first cavity and the second cavity are formed in sequence along the height direction of the housing 1. The height direction here is only based on Figure 1 The height direction here should not be interpreted in a narrow sense. Similarly, for the embodiments of the present invention, the description of the direction should be combined with the corresponding drawings.

[0031] Specifically, the housing 1 includes a first shell 11 and a second shell 12 that are detachably connected. The first shell 11 and the second shell 12 are symmetrically arranged, and the first shell 11 and the second shell 12 are able to form the aforementioned accommodating cavity when the first shell 12 and the second shell 12 are buckled together.

[0032] The photoelectric switch further includes a circuit board unit, which includes a circuit board. In this embodiment, the circuit board is a PCBA 30, which is disposed in the second cavity. Specifically, the circuit board PCBA 30 is detachably disposed in the second cavity of the housing 1.

[0033] In detail, the isolation portion 2 is disposed within the housing 1. The isolation portion 2 and the housing 1 can be integrally formed or separated. Furthermore, the isolation portion 2 includes an isolation body and a first reinforcement structure connected to the isolation body, the first reinforcement structure being disposed in the middle of the isolation body.

[0034] In a preferred embodiment, the isolation body includes a first isolation plate 21 horizontally disposed on the first housing 11, and a second isolation plate 22 horizontally disposed on the second housing 12. The first isolation plate 21 and the second isolation plate 22 are horizontally disposed opposite each other, with the edges of the first isolation plate 21 aligned with the edges of the second isolation plate 22. This arrangement ensures a relatively tight connection between the first and second housings 11, 12 when they are engaged, ensuring that the first and second cavities do not interfere with each other.

[0035] Specifically, the edge of the first isolation plate 21 is provided with a raised structure, and the edge of the second isolation plate 22 is provided with a recessed structure that matches the raised structure, thereby facilitating a tight fit between the first isolation plate 21 and the second isolation plate 22. Alternatively, the edge of the first isolation plate 21 is provided with a recessed structure, and the edge of the second isolation plate 22 is provided with a raised structure that matches the recessed structure, thereby also facilitating a tight fit between the first isolation plate 21 and the second isolation plate 22.

[0036] The circuit board unit also includes a terminal block 31, a transmitter element 32, and a receiver element 33, disposed on a circuit board PCBA 30. The transmitter element 32 and the receiver element 33 are located on either side of the terminal block 31. In a preferred embodiment, the terminal block 31 is located in the middle of one side edge of the PCBA 30, which corresponds to one of the long sides of the PCBA 30. The first and second isolation plates 21 and 22 have openings at locations corresponding to the transmitter element 32 and the receiver element 33, thereby connecting the first and second cavities.

[0037] It should be noted that the first reinforcement structure is configured to accommodate the connection terminal 31 .

[0038] As a preferred embodiment, to better avoid the connection terminals 31 and enhance the structural strength of the housing 1, the first reinforcement structure includes a first reinforcing rib 23 provided on the first housing 11 and a second reinforcing rib 24 provided on the second housing 12. The first reinforcing rib 23 is U-shaped and has an opening facing the PCBA 30. The second reinforcing rib 24 is U-shaped and has an opening facing the PCBA 30. The first and second reinforcing ribs 23 and 24 are arranged opposite each other. In this way, when the PCBA 30 is assembled into the second cavity, the connection terminals 31 can be placed in the receiving groove formed by the first and second reinforcing ribs 23 and 24, thereby ensuring better stability.

[0039] Specifically, the first or second housing 11, 12 is provided with a socket 120 and a light-transmitting hole 121. The socket 120 faces the terminal block 31, while the light-transmitting hole 121 communicates with the second cavity. This arrangement allows the socket 120 to provide a safe passage for external device leads extending from the terminal block 31 and connecting to other devices. The light-transmitting hole 121 facilitates the entry of light into the second cavity. In this embodiment, the socket 120 corresponding to the terminal block 31 is provided on one side of the second housing 12.

[0040] As a preferred embodiment, the second cavity further comprises an elastic snap-fit portion for mounting the circuit board PCBA 30. The elastic snap-fit portion includes a first elastic snap-fit groove 34 provided in the first housing 11 and a second elastic snap-fit groove 35 provided in the second housing 12. The first and second elastic snap-fit grooves 34, 35 cooperate to form an elastic space. When the first and second housings 11, 12 are fastened together, the edges of the PCBA 30 snap into the first and second elastic snap-fit grooves 34, 35, thereby connecting the PCBA 30 to the housing 1. This connection is also a detachable one. This arrangement effectively prevents scratches on the surface of the PCBA 30 during assembly to the housing 1. It also facilitates assembly and disassembly, avoiding the need to secure the PCBA to the housing by hot-melt bonding, as is common in the prior art. This significantly reduces the risk of product damage and improves the yield rate of the photoelectric switch. It also reduces the complexity of assembly and disassembly.

[0041] Furthermore, the photoelectric switch further includes a lens unit, which includes a lens 40 . The lens 40 is embedded in the housing 1 to enclose the first cavity.

[0042] As a preferred embodiment, the lens unit further includes a lens engaging portion 41 disposed on the edge of the lens 40. To facilitate installation, the first housing 11 is provided with a first lens engaging slot 110, and the second housing 12 is provided with a second lens engaging slot 111. The lens engaging portion 41 can be inserted into the first lens engaging slot 110 and the second lens engaging slot 111.

[0043] As a preferred embodiment, the shapes of the first lens slot 110 and the second lens slot 111 match those of the lens clamping portion 41 , so that the lens clamping portion 41 can be clamped in the first lens slot 110 and the second lens slot 111 .

[0044] Preferably, the lens clamping portion 41 is provided to be integrally formed along the circumference of the lens 40 , thereby ensuring the sealing performance of the photoelectric switch housing 1 .

[0045] As a preferred embodiment, the thickness of the lens clamping portion 41 is less than the thickness of the lens 40 , so that the lens clamping portion 41 cooperates with the lens 40 to form a stepped structure, so that the lens clamping portion 41 can be embedded in the first lens clamping slot 110 and the second lens clamping slot 111 .

[0046] To further strengthen the snap-fit connection between the first housing 11 and the second housing 12, a snap hole 112 is provided on at least one side of the first housing 11, and a matching snap 113 is provided on the same side of the second housing 12; or / and a snap 113 is provided on at least one side of the first housing 11, and a matching snap hole 112 is provided on the same side of the second housing 12. In this embodiment, a first snap hole is provided on one side of the first housing 11, and a matching first snap is provided on the same side of the second housing 12; a second snap is provided on the other side of the first housing 11, and a matching second snap hole is provided on the same side of the second housing 12.

[0047] In some other embodiments, the first housing is provided with a latch hole on both sides along its length. The second housing is provided with a latch corresponding to the latch hole of the first housing on both sides along its length. Alternatively, the first housing is provided with a latch on both sides along its length. The second housing is provided with a latch hole on both sides along its length corresponding to the latch of the first housing. Of course, to ensure that the latch and the latch are compatible, the latch hole is provided on a latch tongue extending from the first housing to the second housing, or from the second housing to the first housing.

[0048] Furthermore, to facilitate the mating and fastening of the first housing 11 and the second housing 12, a positioning post is provided on at least one side of the first housing, and a matching positioning hole is provided on the same side of the second housing; or / and a positioning hole is provided on at least one side of the first housing, and a matching positioning post is provided on the same side of the second housing. In this embodiment, a first positioning post 116 is provided on one side of the first housing 11, and a matching first positioning hole 117 is provided on the same side of the second housing 12; a second positioning hole 118 is provided on the other side of the first housing 11, and a matching second positioning post 119 is provided on the same side of the second housing 12.

[0049] Of course, in other embodiments, positioning posts or holes may be provided on both sides of the length of the first housing 11, and correspondingly, matching positioning holes or posts may be provided on both sides of the length of the second housing 12. This arrangement allows for positioning during assembly of the first and second housings 11, 12, facilitating installation.

[0050] It can be seen from this that the photoelectric switch to be protected by the present invention is provided with a shell, a housing having a housing cavity inside, an isolation portion provided inside the housing cavity, the housing cavity being divided by the isolation portion into a first cavity and a second cavity, and at the same time, the shell includes a first shell and a second shell that are detachably connected, the first shell and the second shell being symmetrical to each other, and the housing cavity can be formed when the first shell and the second shell are buckled together; the photoelectric switch also includes a lens unit, the lens unit includes a lens, and the lens is embedded in the shell to close the first cavity; the photoelectric switch also includes a circuit board unit, the circuit board unit includes a circuit board, and the circuit board is detachably arranged inside the second cavity. The photoelectric switch of the present invention is assembled in a bilaterally symmetrical disassembly method, thereby reducing the complexity of the shell mold and eliminating the need for a large number of core-pulling sliders, thereby effectively reducing the mold cost; the combined lens is easy to disassemble and assemble and will not be damaged; the circuit board is detachably arranged inside the shell, thereby avoiding thermal welding, reducing the risk of product damage and the complexity of assembly, improving the product yield and reducing the product maintenance cost.

[0051] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0052] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0053] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0054] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A photoelectric switch, characterized in that: include, A housing having a housing cavity, wherein an isolating portion is provided in the housing cavity, and the housing cavity is divided by the isolating portion into a first cavity and a second cavity; the housing comprises a first outer shell and a second outer shell that are detachably connected, the first outer shell and the second outer shell being symmetrical to each other, and the housing cavity is formed when the first outer shell and the second outer shell are buckled together; a lens unit, comprising a lens, wherein the lens is embeddedly connected to the housing to enclose the first cavity; The circuit board unit includes a circuit board, and the circuit board is arranged in the second cavity.

2. A photoelectric switch according to claim 1, characterized in that: The isolation part includes an isolation body and a first reinforcement structure connected to the isolation body, wherein the first reinforcement structure is arranged in the middle of the isolation body.

3. A photoelectric switch according to claim 2, characterized in that: The isolation body includes a first isolation plate provided on the first shell, and a second isolation plate provided on the second shell. The first isolation plate and the second isolation plate are arranged opposite to each other, and an edge of the first isolation plate is matched with an edge of the second isolation plate.

4. A photoelectric switch according to claim 2 or 3, characterized in that: The circuit board unit further includes a connection terminal, a transmitting element, and a receiving element provided on the circuit board. The transmitting element and the receiving element are respectively located on both sides of the connection terminal, wherein the first reinforcement structure can accommodate the connection terminal.

5. A photoelectric switch according to claim 4, characterized in that: The first shell or the second shell is provided with a plug hole and a light-transmitting hole, the plug hole is opposite to the connection terminal, and the light-transmitting hole is communicated with the second cavity.

6. The photoelectric switch according to claim 4, characterized in that: The first reinforcement structure includes a first reinforcement rib arranged on the first shell, and a second reinforcement rib arranged on the second shell, the first reinforcement rib is "U-shaped" and has an opening facing the circuit board, and the second reinforcement rib is "U-shaped" and has an opening facing the circuit board.

7. The photoelectric switch according to claim 1, characterized in that: The second cavity is also provided with an elastic clamping portion for mounting the circuit board, and the elastic clamping portion includes a first elastic clamping groove provided on the first shell, and a second elastic clamping groove provided on the second shell. The first elastic clamping groove and the second elastic clamping groove cooperate with each other to form an elastic space, and the edge of the circuit board is clamped in the first elastic clamping groove and the second elastic clamping groove.

8. The photoelectric switch according to claim 1, characterized in that: The lens unit also includes a lens clamping portion arranged at the edge of the lens; the first shell is provided with a first lens clamping slot, the second shell is provided with a second lens clamping slot, and the lens clamping portion is embedded in the first lens clamping slot and the second lens clamping slot; the lens clamping portion is arranged along the circumference of the lens.

9. The photoelectric switch according to claim 1, characterized in that: At least one side of the first shell is provided with a card hole, and the same side of the second shell is provided with a matching card buckle; or / and at least one side of the first shell is provided with a card buckle, and the same side of the second shell is provided with a matching card hole.

10. The photoelectric switch according to claim 1, characterized in that: At least one side of the first shell is provided with a positioning column, and the same side of the second shell is provided with a matching positioning hole; or / and at least one side of the first shell is provided with a positioning hole, and the same side of the second shell is provided with a matching positioning column.

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