Modularized inductance type proximity switch

Abstract

The utility model relates to the technical field of electric induction proximity switches, in particular to a modularized inductance type proximity switch. The device comprises a base, a shielding cover is arranged below the base, an on-site indicator is arranged below the shielding cover, and a transmission shaft is vertically installed in the on-site indicator; an upper cover connected with the base is arranged on the base, an induction disc assembly connected with the transmission shaft is arranged in the upper cover, and an inductance type proximity switch module group is arranged in the base; the device adopts a modularized functional component structure and is provided with a field indicator and signal output, so that the opening and closing states of the valve are conveniently observed on site or remotely; according to the device, the position of a target inductor can be manually adjusted, and on-off state monitoring at any angle is facilitated; due to the design of the shaft sleeve and the sealing ring, the sealing performance of the shaft is kept after the shaft is used for a long time, and it is guaranteed that the shaft is not greatly abraded after long-time work; according to the device, different types of inductance type proximity switches can be used according to field requirements, and the requirements of various automatic control systems are met.

Description

Technical Field

[0001] The utility model relates to the technical field of electric inductive proximity switches, in particular to a modular inductive proximity switch. Background Art

[0002] With the rapid development of industrial automation technology, automation instruments have become an indispensable part of industrial automation systems. In industrial equipment systems, there are a large number of pipelines and valves involved. How to quickly and accurately obtain the opening and closing status of each valve or pipeline is crucial to ensure the normal operation of the production system. However, monitoring by manual on-site observation is obviously not a method that can meet the needs, and its efficiency and accuracy are difficult to guarantee. Utility Model Content

[0003] The purpose of the utility model is to provide a modular inductive proximity switch with a reasonable design to solve the defects and shortcomings of the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it comprises a base, a shielding cover is provided under the base, a field indicator is provided under the shielding cover, and a transmission shaft is vertically installed in the field indicator; an upper cover connected to the base is provided, an induction disk assembly connected to the transmission shaft is provided in the upper cover, and an inductive proximity switch module group is provided in the base.

[0005] Preferably, the inductive proximity switch module group includes a bottom plate installed in the base, a plurality of brackets are provided on the bottom plate, and a plurality of inductive proximity switches are inserted in the brackets; a plurality of wiring terminals connected to the plurality of inductive proximity switches are installed on the bottom plate on one side of the bracket.

[0006] Preferably, the induction disc assembly includes a top retaining spring arranged on the top of the transmission shaft, an induction sector disc is installed below the top retaining spring, and the induction sector disc is installed on the transmission shaft through a positioning pin at the bottom; a plurality of staggered target sensors are arranged on the induction sector disc.

[0007] Preferably, a wave spring is sleeved on the transmission shaft between the top retaining spring and the induction sector disk.

[0008] Preferably, a shaft sleeve is provided in the base, the transmission shaft is movably inserted in the shaft sleeve, an upper retaining spring is provided on the transmission shaft above the shaft sleeve, and a middle retaining spring is provided on the transmission shaft below the shaft sleeve.

[0009] Preferably, a plurality of retaining ring sealing rings are provided at the mounting positions of the upper retaining ring, the middle retaining ring and the shaft sleeve.

[0010] Preferably, the on-site indicator is clamped at the bottom end of the transmission shaft through a lower retaining spring.

[0011] Preferably, the upper cover is provided with an internal thread, the base is provided with an external thread, and the base and the upper cover are mounted via the threads.

[0012] Preferably, a sealing ring is provided at the connection between the base and the upper cover.

[0013] After adopting the above structure, the beneficial effects of the utility model are:

[0014] The device adopts a modular functional component structure, which is convenient for installation, maintenance and debugging, and is equipped with an on-site indicator and signal output, which facilitates on-site or remote observation of the opening and closing status of the valve.

[0015] The device can manually adjust the position of the target sensing object to provide opening and closing status monitoring at any angle for special working conditions.

[0016] The design of several shaft sleeves and sealing rings in the device enables the shaft to maintain sealing performance during long-term use, ensuring that no significant wear is caused to the shaft during long-term work.

[0017] This device can use different types of inductive proximity switches according to site requirements, such as output switch signals, Namur signals, 4-10mA signals, PNP, NPN, etc., to meet the requirements of various automation control systems.

[0018] The entire switch module in this device is encapsulated in a solid metal shell, which fully protects the switch module and increases the product's applicability and life. It can be used in various harsh working conditions such as hazardous gas, dusty environment, humid, polluted medium environment, corrosive environment, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded view of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the induction disc assembly in the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the inductive proximity switch module group in the utility model;

[0022] Figure 4 It is a structural diagram of the on-site indicator in the utility model.

[0023] Description of reference numerals:

[0024] 01, upper cover; 02, induction disc assembly; 201, transmission shaft; 202, induction sector disc; 203, positioning pin; 204, retaining ring sealing ring; 205, middle retaining ring; 206, target sensing object; 207, upper retaining ring; 208, wave spring; 209, top retaining ring; 03, inductive proximity switch module group; 301, inductive proximity switch; 302, wiring terminal; 303, bottom plate; 304, bracket; 04, shaft sleeve; 05, sealing ring; 06, base; 07, shielding cover; 08, field indicator; 09, lower retaining ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 As shown, it includes a base 06, a shielding cover 07 is provided below the base 06, a field indicator 08 is provided below the shielding cover 07, indication signals of different colors are drawn on the field indicator 08, and a transmission shaft 201 is vertically installed in the field indicator 08; the base 06 is provided with an upper cover 01 connected thereto, the upper cover 01 is provided with an induction disk assembly 02 connected to the transmission shaft 201, and the base 06 is provided with an inductive proximity switch module group 03.

[0027] See also Figure 1-Figure 4 As shown, the inductive proximity switch module group 03 includes a base plate 303 installed in the base 06, and a plurality of brackets 304 are provided on the base plate 303, and a plurality of inductive proximity switches 301 are inserted in the brackets 304; a plurality of wiring terminals 302 connected to the plurality of inductive proximity switches 301 are installed on the base plate 303 on one side of the brackets 304, and according to the site requirements, the inductive proximity switch 301 uses different switch types, such as output switch signal, Namur signal, 4-10mA signal, PNP, NPN, etc.

[0028] See also Figure 1-Figure 4 As shown, the induction disc assembly 02 includes a top retaining spring 209 arranged on the top of the transmission shaft 201, and an induction sector disc 202 is installed below the top retaining spring 209. The induction sector disc 202 is installed on the transmission shaft 201 through a positioning pin 203 at the bottom; a plurality of staggered target sensing objects 206 are arranged on the induction sector disc 202; a wave spring 208 is sleeved on the transmission shaft 201 between the top retaining spring 209 and the induction sector disc 202.

[0029] See also Figure 1-Figure 4As shown, a shaft sleeve 04 is provided in the base 06, a transmission shaft 201 is movably inserted in the shaft sleeve 04, and an upper retaining spring 207 is provided on the transmission shaft 201 above the shaft sleeve 04, and a middle retaining spring 205 is provided on the transmission shaft 201 below the shaft sleeve 04; several retaining spring sealing rings 204 are provided at the installation positions of the upper retaining spring 207 and the middle retaining spring 205 and the shaft sleeve 04.

[0030] See also Figure 1-Figure 4 As shown, the on-site indicator 08 is clamped at the bottom end of the transmission shaft 201 through the lower retaining spring 09.

[0031] See also Figure 1-Figure 4 As shown, the upper cover 01 is provided with an internal thread, the base 06 is provided with an external thread, and the base 06 and the upper cover 01 are installed through threads; a sealing ring 05 is provided at the connection between the base 06 and the upper cover 01.

[0032] The structural principle and use process of this utility model:

[0033] During installation, firstly, manually lift up the sensing sector disk 202 to compress the wave spring 208, and at the same time, the sensing sector disk 202 leaves the positioning pin 203, and the user can rotate the sensing sector disk 202 to fine-tune the angle of the sensing sector disk 202, and then fasten the upper cover 01 and the base 06 with threads, install the device to the specified position, and connect the transmission shaft 201 to the required equipment by mechanical connection, and then use it;

[0034] During use, when the external device rotates, it will drive the transmission shaft 201 to rotate, and then drive the sensing sector disk 202 and the field indicator 08 to rotate. The sensing sector disk 202 drives the target sensing object 206 to rotate. When the target sensing object 206 rotates to the top of the inductive proximity switch 301, the magnet at the sensing end of the switch will trigger the corresponding action, thereby realizing the electrical signal conversion. The field indicator 08 can also facilitate the user to observe the device status on site according to the rotation to different indication areas.

[0035] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or within the equivalent forms of such scope and boundaries.

Claims

1. A modular inductive proximity switch, comprising a base (06), characterized in that: A shielding cover (07) is provided below the base (06), a field indicator (08) is provided below the shielding cover (07), and a transmission shaft (201) is vertically installed in the field indicator (08); an upper cover (01) connected to the base (06) is provided, a sensing disc assembly (02) connected to the transmission shaft (201) is provided in the upper cover (01), and an inductive proximity switch module group (03) is provided in the base (06).

2. A modular inductive proximity switch according to claim 1, characterized in that: The inductive proximity switch module group (03) comprises a bottom plate (303) installed in a base (06), a plurality of brackets (304) being provided on the bottom plate (303), a plurality of inductive proximity switches (301) being inserted in the brackets (304); a plurality of connection terminals (302) connected to the plurality of inductive proximity switches (301) being installed on the bottom plate (303) on one side of the brackets (304).

3. A modular inductive proximity switch according to claim 2, characterized in that: The induction disc assembly (02) comprises a top retaining spring (209) arranged at the top of the transmission shaft (201), an induction sector disc (202) is installed below the top retaining spring (209), and the induction sector disc (202) is installed on the transmission shaft (201) via a positioning pin (203) at the bottom; and a plurality of staggered target sensing objects (206) are arranged on the induction sector disc (202).

4. A modular inductive proximity switch according to claim 3, characterized in that: A wave spring (208) is sleeved on the transmission shaft (201) between the top clamping spring (209) and the induction sector disk (202).

5. A modular inductive proximity switch according to claim 4, characterized in that: A shaft sleeve (04) is provided in the base (06), the transmission shaft (201) is movably inserted in the shaft sleeve (04), an upper retaining spring (207) is provided on the transmission shaft (201) above the shaft sleeve (04), and a middle retaining spring (205) is provided on the transmission shaft (201) below the shaft sleeve (04).

6. A modular inductive proximity switch according to claim 5, characterized in that: A plurality of retaining ring sealing rings (204) are provided at the mounting locations of the upper retaining ring (207) and the middle retaining ring (205) and the shaft sleeve (04).

7. A modular inductive proximity switch according to claim 6, characterized in that: The on-site indicator (08) is clamped on the bottom end of the transmission shaft (201) via a lower clamping spring (09).

8. The modular inductive proximity switch according to claim 7, characterized in that: The upper cover (01) is provided with an internal thread, the base (06) is provided with an external thread, and the base (06) and the upper cover (01) are mounted via the threads.

9. The modular inductive proximity switch according to claim 8, characterized in that: A sealing ring (05) is provided at the connection between the base (06) and the upper cover (01).

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