CN217849407U - Contactless underwater travel switch - Google Patents

Abstract

The utility model provides a contactless underwater travel switch, which comprises a shell; one end of the shell is connected with a connector socket, a PCB connected with the connector socket is arranged in the shell, and a switch type Hall sensor is arranged on the PCB; the other end of the shell is connected with a pressing handle through a shaft sleeve, and a magnetic core is arranged on the pressing handle; the pressing handle is connected with the connector socket through a pressure spring. The utility model has the advantages of firm structure, full sealing, reliable conversion, strong corrosion resistance and long service life times; the problems that the traditional travel switch is poor in sealing performance when working underwater, a contact is easy to wear, an arc is drawn and ablated, the service life is low, the contact is easy to bond foreign matters and the like are solved.

Description

Contactless underwater travel switch

Technical Field

The utility model relates to a contactless travel switch under water.

Background

The contactless underwater travel switch is composed of a switch type Hall sensor A3144E, a connector socket, a nut, a shell, a pressure spring, a shaft sleeve, a press handle and a magnetic core, wherein the switch type Hall sensor is mainly used as a core sensing device, the magnetic core is close to or far away from the switch type Hall sensor, the magnetic induction intensity penetrating through the switch type Hall sensor is changed, when the magnetic induction intensity reaches an output point of the switch type Hall sensor, the output end of the switch type Hall sensor outputs high level, an application circuit diagram is shown in figure 8, therefore, the contactless underwater travel switch is an active device, and when the contactless underwater travel switch works normally, the switch type Hall sensor is in a power-on state.

A contactless underwater travel switch is mainly used for equipment to play a role of a conversion circuit, a proximity switch designed based on a Hall sensor is widely applied to the fields of aviation, electronics and ships, compared with a traditional contact travel switch, the phenomena that contact arc erosion and contact abrasion during switch conversion do not exist, insulating substances are easy to bond to influence conversion reliability do not exist, a dynamic sealing mechanism adopts rubber during the traditional travel switch underwater application, the phenomena that the rubber is fatigue, ageing and deformation are caused after long-term use, the sealing performance is influenced, if the dynamic sealing is realized by welding metal corrugated pipes, the problems that a precise welding process is difficult to realize, the product percent of pass is low and the like exist.

There is a contactless inductive switch in the market, such as a deepwater contactless trigger switch disclosed in chinese patent with publication number CN204013466U, but no specific inductive magnetic core structure is provided, and a structural scheme of what motion mode is adopted by the magnetic core to trigger induction is provided, but the present application: a mechanical structure and a motion mode of the trigger magnetic core are provided, and the integral structure design of the underwater contactless switch is provided; the mode has the same trigger effect as a travel switch, and the trigger is triggered by pressing a certain travel by a pressing handle, and the trigger travel is adjustable within a certain range; the magnetic sealing and fixing mode is provided, the handle is triggered and reset, the switch integrated shell is suitable for underwater structural design, and an alternative solution applied to underwater travel switches is provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a contactless travel switch under water, this contactless travel switch under water with on-off hall sensor, connector socket, inductive element integrated as an organic whole, possess anti environmental disturbance ability reinforce, longe-lived characteristics.

The utility model discloses a following technical scheme can realize.

The utility model provides a contactless underwater travel switch, which comprises a shell; one end of the shell is connected with a connector socket, a PCB connected with the connector socket is arranged in the shell, and a switch type Hall sensor is arranged on the PCB; the other end of the shell is connected with a pressing handle through a shaft sleeve, and a magnetic core is arranged on the pressing handle; the pressing handle is connected with the connector socket through a pressure spring.

The shaft sleeve and the connector socket are both connected with the shell through threads.

A plurality of nuts are fitted between the housing and the connector receptacle.

Be equipped with many contact pins that are used for fixed PCB board in the connector socket, the rear end of connector socket is connected with the socket back lid through rubber seal.

The magnetic core and the pressing handle are fixed through potting epoxy resin glue.

The shell is movably connected with the press handle.

The vertical axial of shell is equipped with a plurality of through-holes.

Epoxy resin glue is encapsulated in the cavity of the connector socket.

The beneficial effects of the utility model reside in that: the structure is firm, the whole seal, the conversion is reliable, the corrosion resistance is strong, the life time is long; the problems that the traditional travel switch is poor in sealing performance when working underwater, a contact is easy to wear, an arc is drawn and ablated, the service life is low, the contact is easy to bond foreign matters and the like are solved.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the assembly of the press handle and the magnetic core of FIG. 1;

FIG. 3 is an assembly schematic diagram of the connector socket, nut, PCB board, and switch type Hall sensor of FIG. 1;

FIG. 4 is a schematic structural view of the housing of FIG. 1;

FIG. 5 is a schematic diagram of the PCB and the switch type Hall sensor of FIG. 1 being soldered together;

FIG. 6 is a schematic view of the connector receptacle of FIG. 1;

FIG. 7 is a schematic view of the connector receptacle of FIG. 1 from another perspective;

fig. 8 is a schematic diagram of a switch application circuit.

In the figure: the method comprises the following steps of 1-switch type Hall sensor, 2-shell, 3-press handle, 4-pressure spring, 5-shaft sleeve, 6-nut, 7-connector socket, 8-magnetic core, 9-PCB, 10-epoxy resin glue and 11-socket rear cover.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

Example 1

As shown in fig. 1 to 7, a contactless underwater travel switch comprises a housing 2; one end of the shell 2 is connected with a connector socket 7, a PCB 9 connected with the connector socket 7 is arranged in the shell 2, and a switch type Hall sensor 1 is arranged on the PCB 9; the other end of the shell 2 is connected with a press handle 3 through a shaft sleeve 5, and a magnetic core 8 is arranged on the press handle 3; the press handle 3 is connected with the connector socket 7 through a pressure spring 4.

The sleeve 5 and the connector socket 7 are both connected to the housing 2 by means of a screw thread.

A plurality of nuts 6 are fitted between the housing 2 and the connector receptacle 7.

A plurality of contact pins for fixing the PCB 9 are arranged in the connector socket 7, and the rear end of the connector socket 7 is connected with a socket rear cover 11 through a rubber sealing ring.

The magnetic core 8 and the press handle 3 are fixed through potting epoxy resin glue.

The shell 2 is movably connected with the press handle 3.

The vertical axial of shell 2 is equipped with 12 through-holes, puts into under water during operation, and the switch internal pressure is balanced rapidly, presses the handle compression pressure spring and resets freely, does not receive the pressure differential interference, guarantees that the switch internal and external water pressure is balanced.

Epoxy resin glue is encapsulated in the cavity of the connector socket 7.

Preferably, the through holes between the PCB and the connector socket are welded and fixed, and the welding position of the PCB on the contact pins can be adjusted through adjusting, so that the initial conversion stroke of the pressing handle is adjusted, the stroke is adjustable, the design requirement is met, and the positioning of the switch type Hall sensor is realized.

Furthermore, the PCB can move on the contact pins, welding is carried out after the detection conversion stroke meets the requirement, and the application range of products can be expanded.

Preferably, lubricating oil is uniformly coated on the contact parts of the press handle and the pressure spring and the shell, so that the press handle is ensured to be smoother in the pressing process.

The switch type Hall sensor is used as a core reversing element, the induction magnetic core is fixed in the press handle, the two modules are arranged in the same shell, the two modules are integrated into a product with a conversion function, and the traditional travel switch can be effectively replaced.

Example 2

Based on the technical solution of embodiment 1, and:

press 3 fixed magnetic cores 8 of handle, press 3 in the shell 2 with pressure spring 4 impresses of handle, press 3 direction spacing parts of handle to be axle sleeve 5, axle sleeve 5 leans on the external screw thread to revolve fixedly with 2 internal threads of shell, the pressure spring 4 other end leans on connector socket 7 fixed, connector socket 7 external screw thread closes fixedly with 2 internal threads of shell soon, 4 nuts 6 of assembly between shell 2 and the connector socket 7, 6 quantity control pressure spring 4 initial compression volume of accessible control assembly nut, thereby control switch conversion stroke.

There are 3 contact pins in connector socket 7 for welded fastening PCB board 9 (insert PCB board 9 through-hole welded fastening), the on-off hall sensor 1 that the welding tripod draws forth the end on PCB board 9, and the three-way contact pin of connector socket 7 other end is drawn forth, and connector socket 7 area assembles the sealing washer ring channel, reaches sealed requirement when making the plug insert the connector socket.

The magnetic core 8 is fixed with the press handle 3 by encapsulating epoxy resin glue, the shaft sleeve 8 is fixed with the shell 2 by screw thread, the press handle 3 can move in the shell 2, the reset force is generated by the pressure spring 4, and the guide and the limit are realized by the shaft sleeve 5.

The cavity of the connector socket 7 is sealed and fixed by epoxy resin glue, and the leading-out end is sealed and fixed by a sealing rubber ring, so that the underwater use requirement is met.

Switch type hall sensor welds on the PCB board earlier, paints sealedly through 703 glue, and the contact pin welding of rethread PCB board through-hole and connector socket to fill epoxy glue in inside and seal, realize switch type hall sensor location, the PCB board can remove on the contact pin, welds after detecting the conversion stroke and meeting the requirements again, can extend the range of application of product.

Specifically, 703 glue has better flexibility but not enough intensity, and then the encapsulation epoxy glue in the intracavity, epoxy has better intensity, realizes the combination of rigidity and flexibility, prevents to adopt only epoxy glue encapsulation, and stress release causes the solder joint to drop under high low temperature.

Preferably, the magnetic core 8 is made of samarium cobalt magnet materials and meets the requirement of 0-55 ℃ working temperature, the pressure spring 4 is made of stainless springs, the steel wire brand is SUS 304-WPB, the requirement of fatigue life is met, the service life reaches 50000 times, the press handle 3 is made of 316L materials, the press handle is guaranteed to be wear-resistant and corrosion-resistant, the service life reaches 50000 times, the magnetic core 8 and the PCB plate 9 are made of epoxy resin materials and meet the requirement of 0-55 ℃ temperature use, water resistance and corrosion resistance are achieved, the switch type Hall sensor 1 is A3144E, the action stroke is 11-13 mm, the working voltage is 24V, the voltage drop is not more than 2V, and the output form is NPN normally open type.

Furthermore, the connector socket 7 is provided with a positioning nail, and the switch is more conveniently arranged on the panel.

Example 3

Based on the technical scheme of the embodiment 1, and the method comprises the following steps:

the utility model discloses mainly include connector socket response module part and press handle actuating mechanism part.

Connector receptacle sensing module portion: constitute by connector socket, nut, PCB board, switch type hall sensor, shell etc, nut and connector socket thread tightening, switch type hall sensor and PCB board welded fastening, PCB board and connector socket welded fastening, connector socket and shell thread tightening.

A handle actuator part: the pressing handle is fixed with the magnetic core through epoxy resin glue, and the shaft sleeve is fixed with the shell through threads.

In summary, the utility model adopts the switch type Hall sensor as the core reversing device, and the electric signal is triggered by the movement induction of the magnetic core fixed in the press handle, the structure is characterized in that the device can adapt to the underwater 300 m environment and work normally; the pressing conversion stroke of the pressing handle can be changed by changing the number of the mounting nuts, and the application range can be expanded; the device has the characteristics of reliable conversion, long service life, sealing, environmental corrosion resistance and convenience in installation.

Claims (8)

1. A contactless underwater travel switch comprises a shell (2), and is characterized in that: one end of the shell (2) is connected with a connector socket (7), a PCB (9) connected with the connector socket (7) is arranged in the shell (2), and a switch-type Hall sensor (1) is arranged on the PCB (9); the other end of the shell (2) is connected with a press handle (3) through a shaft sleeve (5), and a magnetic core (8) is arranged on the press handle (3); the press handle (3) is connected with the connector socket (7) through a pressure spring (4).

2. The contactless underwater travel switch of claim 1, characterized in that: the shaft sleeve (5) and the connector socket (7) are connected with the shell (2) through threads.

3. The contactless underwater travel switch of claim 1, characterized in that: a plurality of nuts (6) are assembled between the housing (2) and the connector socket (7).

4. The contactless underwater travel switch of claim 1, characterized in that: the connector socket (7) is internally provided with a plurality of contact pins for fixing the PCB (9), and the rear end of the connector socket (7) is connected with a socket rear cover (11) through a rubber sealing ring.

5. The contactless underwater travel switch of claim 1, characterized in that: the magnetic core (8) and the press handle (3) are fixed through potting epoxy resin glue.

6. The contactless underwater travel switch of claim 1, characterized in that: the shell (2) is movably connected with the press handle (3).

7. The contactless underwater travel switch of claim 1, characterized in that: the vertical axial direction of shell (2) is equipped with a plurality of through-holes.

8. The contactless underwater travel switch of claim 1, characterized in that: epoxy resin glue is encapsulated in the cavity of the connector socket (7).

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