Photoelectric switch

Abstract

The utility model discloses a photoelectric switch, which comprises a shell with a mounting channel, a circuit board arranged in the mounting channel, two signal lamps arranged on the circuit board, a lens arranged at one end of the mounting channel, a tail end arranged at the other end of the mounting channel, two lenses formed on the lens, and a mounting frame, a first fixing assembly is arranged between the mounting rack and the circuit board, the first fixing assembly is matched with the mounting rack and has a fixed state and a non-fixed state for fixing the mounting rack and the circuit board, and a second fixing assembly is arranged between the mounting rack and the lens; the second fixing assembly is matched with the mounting frame and has a fixed state and a non-fixed state for fixing the mounting frame and the lens, and when the second fixing assembly is in the fixed state, the first fixing assembly is limited to be in the fixed state, and meanwhile the lens and the signal lamp correspond to each other. The utility model has the following advantages and effects: the mounting is convenient and fast, so that the production efficiency of products is greatly improved.

Description

Technical Field

[0001] The utility model relates to a sensor, in particular to a photoelectric switch. Background Art

[0002] A photoelectric switch, short for photoelectric proximity switch, detects the presence of an object by blocking or reflecting a light beam. This is accomplished by connecting a synchronous circuit to the circuit. This allows detection of any object that reflects (or blocks) light, regardless of metal. The photoelectric switch converts input current into a light signal at the transmitter, which is then emitted. The receiver then detects the target object based on the intensity or presence of the received light.

[0003] The photoelectric switch includes a housing, a circuit board installed in the housing, two signal lights installed on the circuit board, a lens arranged at one end of the housing, a lens formed on the lens and corresponding to the two signal lights respectively, an axial positioning assembly formed between the housing and the circuit board, and a radial positioning assembly formed between the lens and the circuit board, wherein the axial positioning assembly positions the radial positioning assembly in a positioning state; the position between the two lenses and the two signal lights is fixed by the cooperation between the axial positioning assembly and the radial positioning assembly. This installation method, after achieving a non-fixed positioning between the lens and the circuit board, installs the two into the housing and relies on the axial positioning assembly to fix the two. This installation method, since the lens and the circuit board are not in a fixed state during the installation process into the housing, and the inner cavity of the housing itself is narrow, if the axial positioning assembly is misaligned during the alignment installation process, it is very easy to affect the positioning and matching relationship of the radial positioning assembly, resulting in misalignment. Therefore, this installation method is cumbersome to operate and inefficient. Utility Model Content

[0004] The purpose of the utility model is to provide a photoelectric switch, which is easy to install and thus greatly improves the production efficiency of the product.

[0005] The above technical purpose of the present utility model is achieved through the following technical solutions: a photoelectric switch, comprising a shell with a mounting channel, a circuit board arranged in the mounting channel, two signal lights mounted on the circuit board, a lens arranged at one end of the mounting channel, a tail end arranged at the other end of the mounting channel and two lenses formed on the lens, and also comprising a mounting frame, a first fixing component is provided between the mounting frame and the circuit board, the first fixing component cooperates with the mounting frame to have a fixed state and a non-fixed state for fixing the mounting frame and the circuit board, a second fixing component is provided between the mounting frame and the lens, the second fixing component cooperates with the mounting frame to have a fixed state and a non-fixed state for fixing the mounting frame and the lens, when the second fixing component is in the fixed state, it limits the first fixing component to be in the fixed state while forming a positive correspondence between the lenses and the signal lights.

[0006] By adopting the above technical solution, the circuit board is fixed to the mounting frame using a first fixing assembly. After the two are fixed, the mounting frame is fixed to the lens using a second fixing assembly. This completes the fixing of the two and simultaneously achieves the correct alignment between the lens and the signal light. The circuit board, mounting frame, and lens can then be assembled to the housing as a whole, thereby avoiding the occurrence of assembly misalignment caused by interference between positioning structures during the assembly process. This improves installation convenience and significantly increases product production efficiency.

[0007] It is further configured as follows: an installation area for installing a circuit board is formed on the installation frame and the installation frame has elastic deformation, and the installation area has a normal state of cooperating with the first fixing component and the second fixing component and a deformation state of realizing separation of the installation frame and the circuit board.

[0008] By adopting the above technical solution, force is applied to the mounting frame to switch the mounting area to a deformed state, thereby realizing the installation of the circuit board in the mounting area. By restoring the mounting area to a normal state, the first fixing component and the second fixing component are coordinated to form a fixed fit to realize the assembly between the components.

[0009] It is further configured that: the first fixing component includes a plurality of fixing pins fixedly arranged in the installation area and a plurality of fixing holes formed on the circuit board and for the fixing pins to be inserted into. When the installation area is in a normal state, the fixing pins are inserted into the fixing holes to fix the circuit board in the installation area.

[0010] By adopting the above technical solution, the mounting frame undergoes elastic deformation, thereby expanding the installation space of the mounting area, allowing the circuit board to be installed in the mounting area. When the mounting frame returns to its normal state, the fixing pin is inserted into the fixing hole, thereby fixing the circuit board in the mounting area.

[0011] It is further configured as follows: the second fixing component includes a fixing slot arranged on the lens and an elastic claw formed on the mounting frame and engaged with the fixing slot; when the mounting area is in a normal state, the elastic claw is engaged with the fixing slot.

[0012] By adopting the above technical solution, the elastic claw is engaged with the fixed slot to achieve fixation between the mounting frame and the lens. This matching method has a simple structure and is easy to operate.

[0013] It is further configured that: the outer peripheral wall of the fixing pin is tapered and extends outwardly along the free end direction and is gradually narrowed, and the shape of the fixing socket is adapted to the shape of the fixing pin.

[0014] By adopting the above technical solution, this setting structure can well compensate for the assembly tolerance formed by assembling between components, so as to achieve more precise assembly and fixation of the circuit board.

[0015] It is further configured as follows: the lens is threadedly connected to the housing.

[0016] By adopting the above technical solution, the threaded structure can realize a convenient connection between the lens and the housing.

[0017] It is further configured as follows: the tail end is threadedly connected to the shell, and an elastic member is provided between the tail end and the mounting frame to drive the mounting frame to press against the lens.

[0018] By adopting the above technical solution, the elastic member is provided to further press the mounting frame to prevent the second fixing component from separating. At the same time, the formed pressing force can further prevent the loosening problem of the tail end threaded connection, thereby improving the tightness of the assembly.

[0019] In summary, the present invention has the following beneficial effects: the present invention is easy to install, thereby greatly improving the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an embodiment;

[0021] Figure 2 Partial explosion for example Figure 1 ;

[0022] Figure 3 Partial explosion for example Figure 2 ;

[0023] Figure 4 Partial explosion for example Figure 3 ;

[0024] Figure 5 A partial cross-sectional view of an embodiment;

[0025] Figure 6 It is another partial cross-sectional view of the embodiment.

[0026] In the figure: 1. Installation channel; 2. Housing; 3. Circuit board; 4. Signal light; 5. Lens; 6. Tail end; 7. Lens; 8. Mounting frame; 9. Installation area; 101. Fixing pin; 102. Fixing socket; 111. Fixing slot; 112. Elastic claw; 12. Elastic member. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] refer to Figures 1 to 6 A photoelectric switch includes a housing 2 having a mounting channel 1, a circuit board 3 disposed within the mounting channel 1, two signal lights 4 fixedly mounted on the circuit board 3, a lens 5 disposed at one end of the mounting channel 1, a tail 6 disposed at the other end of the mounting channel 1, and two lenses 7 formed on the lens 5. The switch also includes a mounting frame 8, a first fixing component disposed between the mounting frame 8 and the circuit board 3, the first fixing component cooperating with the mounting frame 8 to enable a fixed state and a non-fixed state for fixing the mounting frame 8 to the circuit board 3; and a second fixing component disposed between the mounting frame 8 and the lens 5, the second fixing component cooperating with the mounting frame 8 to enable a fixed state and a non-fixed state for fixing the mounting frame 8 to the lens 5. When the second fixing component is in the fixed state, it restricts the first fixing component from being in the fixed state, while simultaneously establishing a positive correspondence between the lenses 7 and the signal lights 4.

[0029] Mounting frame 8 is formed with an elastically deformable mounting area 9 for mounting circuit board 3. Mounting frame 8 is made of plastic. Mounting area 9 has a normal state where it engages with the first and second fixing assemblies, and a deformable state where it separates mounting frame 8 from circuit board 3. Two signal lights 4, one for transmitting and one for collecting, are used. The lens 5 and lens 7 are integrally formed.

[0030] The first fixing assembly includes a plurality of fixing pins 101 integrally mounted on the mounting frame 8 and a plurality of fixing holes 102 formed on the circuit board 3 and adapted to receive the fixing pins 101. When the mounting area 9 is in a normal state, the fixing pins 101 are inserted into the fixing holes 102 to secure the circuit board 3 within the mounting area 9.

[0031] The second fixing assembly includes a fixing slot 111 formed in the lens 5 and an elastic claw 112 integrally formed on the mounting frame 8 and engaging with the fixing slot 111. The elastic claw 112 is made of plastic. When the mounting area 9 is in a normal state, the elastic claw 112 is engaged with the fixing slot 111.

[0032] The outer wall of the fixing pin 101 is tapered, extending outward from the free end and gradually tapering. The shape of the fixing hole 102 matches that of the fixing pin 101. The lens 5 is threadedly connected to the housing 2, and the tail end 6 is threadedly connected to the housing 2. An elastic member 12 is provided between the tail end 6 and the mounting bracket 8, driving the mounting bracket 8 against the lens 5. The elastic member 12 is embedded and fixed to the tail end 6 and is made of rubber.

[0033] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A photoelectric switch comprising a housing (2) having a mounting channel (1), a circuit board (3) disposed in the mounting channel (1), two signal lights (4) mounted on the circuit board (3), a lens (5) disposed at one end of the mounting channel (1), a tail end (6) disposed at the other end of the mounting channel (1), and two lenses (7) formed on the lens (5), characterized in that: The invention also includes a mounting frame (8), wherein a first fixing component is provided between the mounting frame (8) and the circuit board (3), and the first fixing component cooperates with the mounting frame (8) to have a fixed state and a non-fixed state for fixing the mounting frame (8) and the circuit board (3); a second fixing component is provided between the mounting frame (8) and the lens (5), and the second fixing component cooperates with the mounting frame (8) to have a fixed state and a non-fixed state for fixing the mounting frame (8) and the lens (5); when the second fixing component is in the fixed state, it restricts the first fixing component to be in the fixed state, and simultaneously forms a positive correspondence between the lens (7) and the signal light (4).

2. The photoelectric switch according to claim 1, wherein: The mounting frame (8) is formed with a mounting area (9) for mounting the circuit board (3), and the mounting frame (8) has elastic deformation, and the mounting area (9) has a normal state for cooperating with the first fixing component and the second fixing component, and a deformed state for achieving separation of the mounting frame (8) and the circuit board (3).

3. The photoelectric switch according to claim 2, characterized in that: The first fixing assembly comprises a plurality of fixing pins (101) fixedly arranged in the installation area (9) and a plurality of fixing holes (102) formed on the circuit board (3) and for the fixing pins (101) to be inserted into. When the installation area (9) is in a normal state, the fixing pins (101) are inserted into the fixing holes (102) to fix the circuit board (3) in the installation area (9).

4. The photoelectric switch according to claim 2, wherein: The second fixing assembly comprises a fixing slot (111) provided on the lens (5) and an elastic claw (112) formed on the mounting frame (8) and engaged with the fixing slot (111); when the mounting area (9) is in a normal state, the elastic claw (112) is engaged with the fixing slot (111).

5. The photoelectric switch according to claim 3, characterized in that: The outer peripheral wall of the fixing pin (101) is tapered and extends outwardly in the direction of the free end and is gradually tapered, and the shape of the fixing insertion hole (102) is adapted to the shape of the fixing pin (101).

6. The photoelectric switch according to claim 1, wherein: The lens (5) is threadably connected to the housing (2).

7. The photoelectric switch according to claim 1, characterized in that: The tail end (6) is threadedly connected to the housing (2), and an elastic member (12) is provided between the tail end (6) and the mounting frame (8) for driving the mounting frame (8) to press against the lens (5).

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