Remote proximity switch

Abstract

The utility model provides a remote proximity switch, which relates to the proximity switch field and comprises a shell, an induction rod and an induction head, the induction rod is arranged in the shell, a shielding sleeve is arranged on the outer side of the induction rod, the induction head is arranged on the top of the induction rod, a protective cover is arranged on the outer side of the induction head in a surrounding mode, and a refraction plate is arranged on the inner wall of the protective cover. According to the utility model, ultrasonic waves or infrared rays can be refracted and gathered to a certain extent through the refraction plate in the protective cover, energy can be more concentrated by refracting and gathering the ultrasonic waves or the infrared rays, the signal intensity is enhanced, the ultrasonic waves or the infrared rays are prevented from being excessively diffused in the propagation process, and the loss of signals is reduced; the detection accuracy and precision are improved, and the detection range of the switch is increased.

Description

Technical Field

[0001] The utility model relates to the field of proximity switches, and particularly to a long-distance proximity switch. Background Art

[0002] A proximity switch is a sensor that uses various principles for induction to detect the distance between an object or a target object and the sensor. It can monitor the presence or departure of an object from a certain position and control a device or perform corresponding operations by outputting a signal. Most of the existing proximity switches are Figure 1 As shown, after being connected to an external power supply structure through a circuit base, power is supplied to an internal induction rod. After the induction rod is powered on, it uses ultrasonic waves to sense an object. The problems existing in the above technical solutions are that the proximity switch will be interfered by external signals during use, and at the same time, its ultrasonic waves or infrared rays will be affected by the external environment and spread, resulting in the loss of its signals, reducing the detection accuracy and precision, and narrowing the detection range of the switch. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the following problems existing in the prior art: the proximity switch will be interfered by external signals during use, and at the same time, its ultrasonic waves or infrared rays will be affected by the external environment and spread, resulting in the loss of its signals, reducing the detection accuracy and precision, and narrowing the detection range of the switch.

[0004] To solve the problems existing in the prior art, the utility model provides a long-distance proximity switch, which includes a housing, an induction rod, and an induction head. An induction rod is arranged inside the housing, a shielding sleeve is arranged outside the induction rod, an induction head is arranged at the top of the induction rod, a protective cover is arranged around the outside of the induction head, a refraction plate is arranged on the inner wall of the protective cover, and a power cord is arranged at the bottom of the housing.

[0005] Further, a threaded structure is arranged on the outside of the housing, and the threaded structure can facilitate the staff to fix the device with a fixing sleeve.

[0006] Further, the bottom of the induction rod is connected to the power cord through a connection structure, and the power can be transmitted to the induction rod through the power cord. After the induction rod is powered on, it can work.

[0007] Further, the shielding sleeve is made of copper foil material, and a plurality of groups of through holes are equidistantly arranged on the surface of the shielding sleeve. The depth of the through holes is 5 mm, and the copper foil material can effectively isolate external signal interference.

[0008] Further, the inner side of the protective cover is made of glass material, and the inner side of the protective cover made of glass material is applicable to a proximity switch for infrared induction.

[0009] Furthermore, the inner side of the refraction plate is made of glass material, and the glass material on the inner side of the refraction plate is applicable to the proximity switch with infrared induction.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] Through the refraction plate inside the protective cover, the present utility model can refract and converge ultrasonic waves or infrared rays to a certain extent. Refracting and converging ultrasonic waves or infrared rays can make the energy more concentrated, enhance the signal intensity, prevent the excessive diffusion of ultrasonic waves or infrared rays during the propagation process, reduce the signal loss, improve the detection accuracy and precision, and increase the detection range of the switch.

[0012] Through the shielding sleeve, the present utility model can effectively block the interference of external electromagnetic signals to the induction rod, make the signal received by the induction rod more stable, thereby improving the working stability and precision of the switch. At the same time, it can ensure that the induction rod can accurately detect the target object and improve the reliability of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the three-dimensional exploded structure of the prior art;

[0014] Figure 2 is a schematic diagram of the three-dimensional exploded structure of the present utility model;

[0015] Figure 3 is a schematic diagram of the three-dimensional sectional structure of the protective cover of the present utility model;

[0016] Reference numerals: 1, housing; 2, induction rod; 3, induction head; 4, power cord; 5, shielding sleeve; 6, protective cover; 7, refraction plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the following combines specific embodiments and drawings to further elaborate the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present invention.

[0018] The following describes the specific embodiments of the present utility model with reference to the drawings.

[0019] Embodiment 1

[0020] As Figures 1-3As shown in the figure, a long-distance proximity switch includes a housing 1, an induction rod 2, and an induction head 3. The induction rod 2 is arranged inside the housing 1, a shielding sleeve 5 is arranged outside the induction rod 2, the induction head 3 is arranged at the top of the induction rod 2, a protective cover 6 is arranged around the outside of the induction head 3, a refraction plate 7 is arranged on the inner wall of the protective cover 6, and a power cord 4 is arranged at the bottom of the housing 1.

[0021] Principle description: The staff connects the power cord 4 to an external power supply, and transmits the external power supply to the induction rod 2 through the power cord 4. After the induction rod 2 is powered on, it can sense external objects through ultrasonic waves or infrared rays. When the ultrasonic waves and infrared rays sense outward, the refraction plate 7 inside the protective cover 6 can refract and gather the ultrasonic waves or infrared rays to a certain extent. Refracting and gathering the ultrasonic waves or infrared rays can make the energy more concentrated, enhance the signal intensity, and at the same time prevent the ultrasonic waves or infrared rays from spreading excessively during the propagation process, reduce the loss of signals, improve the accuracy and precision of detection, increase the detection range of the switch. When an external object touches the ultrasonic waves or infrared rays, it will refract them, so that the induction rod 2 transmits a signal to the controller, and the controller controls the external processing device to work. The shielding sleeve 5 can effectively block the interference of external electromagnetic signals to the induction rod 2, make the signal received by the induction rod 2 more stable, thereby improving the working stability and precision of the switch, and at the same time ensuring that the induction rod 2 can accurately detect the target object and improving the reliability of the switch.

[0022] The housing 1 is mainly used to protect the internal structure. When selected, a threaded structure is arranged on the outside of the housing 1.

[0023] The induction rod 2 is mainly used to sense the distance of an object by using ultrasonic waves or infrared rays after being powered on. When selected, the bottom of the induction rod 2 is connected to the power cord 4 through a connection structure.

[0024] The induction head 3 is mainly used to sense external objects. When selected, it can be conventionally selected from the existing technologies according to needs.

[0025] The power cord 4 is mainly used to transmit power. When selected, it can be conventionally selected from the existing technologies according to needs.

[0026] The shielding sleeve 5 is mainly used to shield external signals. When selected, the shielding sleeve 5 is made of copper foil material, and a plurality of groups of through holes are equidistantly arranged on the surface of the shielding sleeve 5, and the depth of the through holes is 5 mm.

[0027] The protective cover 6 is mainly used to protect the induction head 3. When selected, the inner side of the protective cover 6 is made of glass material.

[0028] The refraction plate 7 is mainly used to refract and gather ultrasonic waves or infrared rays. When selected, the inner side of the refraction plate 7 is made of glass material.

[0029] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A long-distance proximity switch, comprising a housing (1), a sensing rod (2) and a sensing head (3), characterized in that: A sensing rod (2) is provided inside the shell (1), a shielding sleeve (5) is provided outside the sensing rod (2), a sensing head (3) is provided on the top of the sensing rod (2), a protective cover (6) is provided around the outside of the sensing head (3), a refraction plate (7) is provided on the inner wall of the protective cover (6), and a power cord (4) is provided at the bottom of the shell (1).

2. A long-distance proximity switch according to claim 1, characterized in that: The outer side of the shell (1) is provided with a thread structure.

3. A long-distance proximity switch according to claim 1, characterized in that: The bottom of the sensing rod (2) is connected to the power line (4) via a connecting structure.

4. The long-distance proximity switch according to claim 1, characterized in that: The shielding sleeve (5) is made of copper foil material, and a plurality of groups of through holes are equidistantly arranged on the surface of the shielding sleeve (5), wherein the depth of the through holes is 5 mm.

5. The long-distance proximity switch according to claim 1, characterized in that: The inner side of the protective cover (6) is made of glass.

6. The long-distance proximity switch according to claim 1, characterized in that: The inner side of the refraction plate (7) is made of glass.

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