Groove type photoelectric switch

Abstract

The utility model provides a groove type photoelectric switch. The groove type photoelectric switch comprises a shell, a transmitting tube, a receiving tube, a pin sleeve, a circuit module, a rear cover and a wire, the utility model is characterized in that the transmitting tube and the receiving tube are respectively arranged on the left side and the right side of the shell, the pin sleeve is fixed below the transmitting tube and the receiving tube, the circuit module is arranged below the pin sleeve, pins of the transmitting tube and the receiving tube pass through pin holes of the pin sleeve and are connected with the circuit module, and one end of a lead is welded with the circuit module and is led out through a lead lead-out hole of the rear cover; the shell is in a U shape, and a single-side open empty groove is formed in the shell. The transmitting tube and the receiving tube are respectively fixed on left and right feet of the empty slot; a luminous source of the transmitting tube directly faces a light receptor of the receiving tube; the pin sleeve is U-shaped and is used for reinforcing internal fixation; epoxy resin glue is further poured between the circuit module and the rear cover in the empty groove of the shell. According to the utility model, internal devices are stably fixed, the product is fully sealed, and the housing has strong light transmission.

Description

Technical Field

[0001] The utility model belongs to the field of optoelectronic devices, and in particular relates to a slot-type photoelectric switch. Background Art

[0002] A slot-type photoelectric switch, also known as a U-shaped photoelectric switch, is a switch implemented using photoelectric conversion technology. It operates without mechanical contact with moving parts and offers outstanding advantages such as reliable operation, stable performance, high repeatability, no mechanical wear, long service life, no sparks, no noise, strong anti-interference capabilities, and strong environmental adaptability. A key feature of this switch is that when installed in an operating mechanism, the photosensitive receiving tube will display high and low level fluctuations when light is blocked or allowed to pass through an opaque object. A detection circuit compares these changing signals, prompting the output terminal to output different signals, thereby switching the photoelectric switch on and off.

[0003] Chinese patent application number CN221127268U discloses a slot-type photoelectric switch assembly structure. The photoelectric switch is equipped with an L-shaped infrared transmitter and infrared receiver on both sides of the top of the open slot. This eliminates the need for fixing and connecting processes such as threading or soldering during production. At the same time, the overall structure has fewer parts, effectively improving production efficiency and reducing production costs.

[0004] However, the photoelectric switch has the following problems:

[0005] 1) The internal components are not firmly fixed and are prone to shaking;

[0006] 2) Lack of high sealing performance; Utility Model Content

[0007] To solve the above problems, the utility model provides a slot-type photoelectric switch, comprising a housing, a transmitting tube, a receiving tube, a pin sleeve, a circuit module, a back cover, and a wire; the characteristics are: the transmitting tube and the receiving tube are respectively installed in the left and right sides of the housing, the pin sleeve is fixed below the transmitting tube and the receiving tube, and the circuit module is arranged below the pin sleeve, the pins of the transmitting tube and the receiving tube pass through the pin holes of the pin sleeve and are connected to the circuit module, one end of the wire is welded to the circuit module and is led out through the wire lead-out hole of the back cover.

[0008] The outer shell is U-shaped, with a single-side open slot inside.

[0009] The transmitting tube and the receiving tube are fixed on the left and right feet of the empty slot respectively, and the light source of the transmitting tube is facing the light receiver of the receiving tube.

[0010] The pin sleeve is U-shaped, and its length and cross-sectional shape match the depth and cross-sectional shape of the two pins in the housing slot to strengthen the internal fixation and prevent the device from shaking.

[0011] The size and shape of the lower section of the pin sleeve match the cross-section of the housing slot to prevent the product's potting epoxy resin from overflowing onto the transmitting and receiving tube lamp beads.

[0012] An empty slot is provided below the pin sleeve for accommodating components on the circuit module.

[0013] The back cover is fixed to the outer shell through a snap-fit ​​structure to prevent it from loosening before the glue dries.

[0014] The housing slots are filled with epoxy resin glue between the circuit module and the back cover to further seal it.

[0015] There are mounting ears on the left and right sides of the housing, with mounting holes punched on the ears for mounting and fixing during use.

[0016] The housing is made of all-black, light-transmitting material to increase the transmittance of light signals.

[0017] The utility model has the following beneficial effects:

[0018] 1) The hollow slots of the outer shell and the internal components are fixed together to prevent the internal components from shaking;

[0019] 2) The shell adopts a single opening structure, and the single opening side is filled with epoxy resin glue and then the cover is inserted into the back cover to achieve full sealing of the product;

[0020] 3) The shell is made of translucent black material, which has a stronger transmittance to the light emitted by the transmitting tube than conventional black materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] In the figure: 1-housing; 2-transmitting tube; 3-receiving tube; 4-pin cover; 5-circuit module; 6-epoxy resin glue; 7-back cover; 8-wire. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figure 1The utility model provides a technical solution: a slot-type photoelectric switch, comprising a housing 1, a transmitting tube 2, a receiving tube 3, a pin sleeve 4, a circuit module 5, a back cover 7 and a wire 8; characterized in that: the transmitting tube 2 and the receiving tube 3 are respectively installed in the left and right sides of the housing 1, the pin sleeve 4 is fixed below the transmitting tube 2 and the receiving tube 3, and the circuit module 5 is arranged below the pin sleeve 4, the pins of the transmitting tube 2 and the receiving tube 3 pass through the pin holes of the pin sleeve 4 and are connected to the circuit module 5, one end of the wire 8 is welded to the circuit module 5 and is led out through the wire lead-out hole of the back cover 7.

[0026] The outer shell 1 is U-shaped, and the interior is a hollow slot with a single-side opening.

[0027] The transmitting tube 2 and the receiving tube 3 are fixed at the left and right feet of the empty slot respectively, and the light source of the transmitting tube 2 is facing the light receiver of the receiving tube 3.

[0028] The pin sleeve 4 is U-shaped. Its length and cross-sectional shape match the depth and cross-sectional shape of the two pins in the housing 1, and it is used to strengthen the internal fixation and prevent the device from shaking.

[0029] The size and shape of the lower portion of the pin sleeve 4 matches the cross-section of the hollow slot of the housing 1, thereby preventing the product encapsulation epoxy resin glue 6 from overflowing onto the transmitting tube 2 and the receiving tube 3 lamp beads.

[0030] An empty slot is provided below the pin sleeve 4 for accommodating components on the circuit module 5 .

[0031] The back cover 7 is fixed to the hollow slot of the housing 1 by means of a snap-fit ​​structure to prevent it from loosening before the glue dries.

[0032] The hollow groove of the housing 1 is also filled with epoxy resin glue 6 between the circuit module 5 and the back cover 7, which further plays a sealing role.

[0033] The left and right sides of the housing 1 are provided with mounting ears, each with mounting holes for mounting and fixing during use.

[0034] The housing 1 is made of completely black, light-transmitting material to increase the transmittance of the light signal.

[0035] Working Principle: This photoelectric switch is U-shaped, with a transmitter tube 2 and a receiver tube 3 located on either side of a U-shaped groove. When in use, the transmitter tube 2 emits a light signal, which is received by the receiver tube 3. An optical axis is formed between the transmitter tubes 2 and 3. When an object passes through the U-shaped groove and blocks the optical axis, the circuit module 5 detects the target object based on the intensity or presence of light received by the receiver tube 3. Wire 8 powers the photoelectric switch and transmits a return signal.

[0036] Through the utility model, the hollow grooves of the shell and the internal components are matched and fixed to prevent the components from shaking; the shell adopts a single-opening structure, and the single-opening side is filled with epoxy resin glue and then covered with a back cover to achieve full sealing of the product; the shell adopts a translucent black shell material, which has a stronger transmittance to the light emitted by the transmitting tube than conventional black materials.

[0037] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A slot-type photoelectric switch, comprising a housing (1), a transmitting tube (2), a receiving tube (3), a pin sleeve (4), a circuit module (5), a rear cover (7) and a wire (8); characterized in that: The transmitting tube (2) and the receiving tube (3) are respectively installed in the left and right sides of the housing (1); the pin sleeve (4) is fixed below the transmitting tube (2) and the receiving tube (3); a circuit module (5) is arranged below the pin sleeve (4); the pins of the transmitting tube (2) and the receiving tube (3) pass through the pin holes of the pin sleeve (4) and are connected to the circuit module (5); one end of the wire (8) is welded to the circuit module (5) and is led out through the wire lead-out hole of the rear cover (7).

2. The slot-type photoelectric switch according to claim 1, wherein: The outer shell (1) is U-shaped, and the interior is a hollow slot with a single-side opening.

3. The slot-type photoelectric switch according to claim 2, wherein: The transmitting tube (2) and the receiving tube (3) are respectively fixed to the left and right legs of the empty slot, and the light source of the transmitting tube (2) faces the light receiver of the receiving tube (3).

4. The slot-type photoelectric switch according to claim 2, wherein: The pin sleeve (4) is U-shaped, and the length and cross-sectional shape of the pin sleeve (4) matched with the fixed transmitting tube (2) and the receiving tube (3) match the depth and cross-sectional shape of the two pins of the empty slot of the housing (1).

5. The slot-type photoelectric switch according to claim 2, wherein: The size and shape of the lower section of the pin sleeve (4) match the cross section of the hollow slot of the housing (1).

6. The slot-type photoelectric switch according to claim 1, wherein: An empty slot is provided below the pin sleeve (4) for accommodating components on the circuit module (5).

7. The slot-type photoelectric switch according to claim 2, wherein: The rear cover (7) is fixed in place by cooperating with the hollow slot of the outer shell (1) via a snap-fit ​​structure.

8. The slot-type photoelectric switch according to claim 1, wherein: The hollow groove of the housing (1) is also filled with epoxy resin glue (6) between the circuit module (5) and the back cover (7).

9. The slot-type photoelectric switch according to claim 1, wherein: The housing (1) is provided with mounting ears on the left and right sides, and mounting holes are punched on the mounting ears.

10. The slot-type photoelectric switch according to claim 1, wherein: The housing (1) is made of completely black light-transmitting material.

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