CN110912547A - Plug-in assembled magnetic induction switch - Google Patents

Abstract

The invention aims to provide a plug-in type assembled magnetic induction switch which is very convenient to assemble and has higher reliability. The plug-in type assembled magnetic induction switch comprises a shell and a sensor, wherein a sensor accommodating cavity is arranged in the shell, one end of the sensor accommodating cavity is opened, the sensor is positioned in the sensor accommodating cavity, and a lead of the sensor is led out from the opening end of the sensor accommodating cavity; the lateral wall of sensor is equipped with the spacing sand grip of second that is equipped with first spacing sand grip, sensor holding chamber on the open end inner wall mutually wrong with first spacing sand grip position, install Z shape elastic frame between the inner wall in sensor and sensor holding chamber, the both ends tip of Z shape elastic frame offsets with first spacing sand grip, the spacing sand grip of second respectively, and the elasticity that Z shape elastic frame itself had makes self to the radial direction extension in sensor holding chamber to make the sensor be difficult to remove to the opening direction in sensor holding chamber, realized the mesh of anticreep.

Description

Plug-in assembled magnetic induction switch

Technical Field

The invention belongs to the technical field of electronics, and particularly relates to a magnetic induction switch.

Background

The magnetic induction switch belongs to a proximity switch, and can convert non-electric quantity or electromagnetic quantity into a desired electric signal by utilizing the electromagnetic working principle and changing the position relation between a sensor and an object, thereby achieving the purpose of control or measurement. The magnetic induction switch has strong anti-interference capability, good waterproof performance, long action distance and high temperature resistance, and can be used in a plurality of electric appliances such as electric cookers and the like. The conventional magnetic induction switch has the following structure: the sensor comprises a shell and a sensor, wherein the shell is provided with a groove with an opening at one side, the sensor is placed in the groove, and the opening of the groove is encapsulated by epoxy resin; the lead of the sensor is led out from one end of the shell. When the magnetic induction switch is manufactured, firstly, a lead of the sensor penetrates through a guide hole in the end face of the shell from outside to inside, then the lead is welded with the sensor, and finally, the sensor is packaged in the groove by using epoxy resin. In the manufacturing process, the mode of welding after threading is adopted, so that the operation is very difficult, and poor welding points are easily caused; furthermore, the epoxy resin has a long hardening time, which slows down the manufacturing rhythm. In addition, the epoxy resin is easy to fall off after long-term use, so that the reliability of the magnetic induction switch is poor.

Disclosure of Invention

The invention aims to provide a plug-in type assembled magnetic induction switch which is very convenient to assemble and has higher reliability.

The plug-in type assembled magnetic induction switch comprises a shell and a sensor, and is characterized in that a sensor accommodating cavity is arranged in the shell, one end of the sensor accommodating cavity is open, the sensor is positioned in the sensor accommodating cavity, and a lead of the sensor is led out from the open end of the sensor accommodating cavity; the outer side wall of the sensor is provided with a first limit convex strip, a second limit convex strip staggered with the first limit convex strip is arranged on the inner wall of the opening end of the sensor accommodating cavity, a Z-shaped elastic frame is installed between the inner wall of the sensor and the inner wall of the sensor accommodating cavity, and the end parts of the two ends of the Z-shaped elastic frame are respectively abutted against the first limit convex strip and the second limit convex strip.

When assembling the magnetic induction switch, at first with sensor and wire welding, put into the sensor holding intracavity of casing with the sensor again, and make the wire draw forth by the open end in sensor holding chamber, insert the space department between sensor and the sensor holding intracavity wall with Z shape elastic frame at last, the both ends tip of Z shape elastic frame respectively with first spacing sand grip, the spacing sand grip of second offsets, the elasticity that Z shape elastic frame itself has makes self to the radial direction extension in sensor holding chamber, thereby make the sensor be difficult to remove to the opening direction in sensor holding chamber, the mesh of anticreep has been realized.

Furthermore, in order to ensure that the stress of the sensor is uniform and the reliability is improved, two U-shaped elastic frames are arranged and are respectively positioned at two opposite sides of the sensor.

Further, in order to avoid the sensor accommodating cavity from entering sundries and avoid the sensor from shaking in the sensor accommodating cavity to generate noise, the opening end of the sensor accommodating cavity is sealed by glue, and the glue can also play a role in preventing the sensor from being separated.

The magnetic induction switch of the plug-in type assembly utilizes the Z-shaped elastic frame to fix the sensor, is convenient to assemble, and has good reliability because the sensor is not easy to fall out of the shell.

Drawings

Fig. 1 is a schematic structural view (cross-sectional view) of a plug-in mounted magnetic induction switch of the present invention.

The figures are numbered: 1. a housing; 2. a sensor; 3. a sensor accommodating cavity; 4. a first limit convex strip; 5. a second limit convex strip; 6. a Z-shaped elastic frame; 7. and (4) glue.

Detailed Description

The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.

Example 1:

the embodiment provides a magnetic induction switch with plug-in assembly, which is very convenient to assemble and has higher reliability.

As shown in fig. 1, the plug-in type assembled magnetic induction switch of the present embodiment includes a housing 1 and a sensor 2, a sensor accommodating cavity 3 is provided in the housing 1, one end of the sensor accommodating cavity 3 is open, the sensor 2 is located in the sensor accommodating cavity 3, and a lead of the sensor 2 is led out from the open end of the sensor accommodating cavity 3; the lateral wall of 2 tip both sides of sensor is equipped with the spacing sand grip 5 of second that is equipped with on the open end inner wall of first spacing sand grip 4, sensor holding chamber 3 mutually in phase with first spacing sand grip 4 position, install Z shape elastic frame 6 between the inner wall of sensor 2 and sensor holding chamber 3, the both ends tip of Z shape elastic frame 6 offsets with first spacing sand grip 4, the spacing sand grip 5 of second respectively.

When assembling the magnetic induction switch, at first with sensor 2 and wire welding, put into sensor holding chamber 3 of casing 1 with sensor 2 again, and make the wire draw forth by the open end in sensor holding chamber 3, insert the space department between sensor 2 and the 3 inner walls in sensor holding chamber with Z shape elastic frame 6 at last, the both ends tip of Z shape elastic frame 6 respectively with first spacing sand grip 4, the spacing sand grip 5 of second offsets, the elasticity that Z shape elastic frame 6 itself has makes self to the radial direction extension in sensor holding chamber 3, thereby make sensor 2 be difficult to remove to the opening direction in sensor holding chamber 3, the mesh of anticreep has been realized.

For avoiding getting into debris in the sensor holding chamber 3 to and avoid sensor 2 to rock and produce the noise in sensor holding chamber 3, the open end in sensor holding chamber 3 utilizes glue 7 to seal, and above-mentioned glue 7 also can play the effect that prevents sensor 2 and break away from.

The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description, as long as the invention is capable of being practiced without modification in any way whatsoever, and is capable of other applications without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. A magnetic induction switch assembled in a plug-in mode comprises a shell and a sensor, and is characterized in that a sensor accommodating cavity is formed in the shell, one end of the sensor accommodating cavity is open, the sensor is located in the sensor accommodating cavity, and a lead of the sensor is led out from the open end of the sensor accommodating cavity; the outer side wall of the sensor is provided with a first limit convex strip, a second limit convex strip staggered with the first limit convex strip is arranged on the inner wall of the opening end of the sensor accommodating cavity, a Z-shaped elastic frame is installed between the inner wall of the sensor and the inner wall of the sensor accommodating cavity, and the end parts of the two ends of the Z-shaped elastic frame are respectively abutted against the first limit convex strip and the second limit convex strip.

2. A plug-in mounted magnetic induction switch according to claim 1, wherein said Z-shaped spring mounts are two and located on opposite sides of the sensor.

3. The plug-in mounted magnetic induction switch according to claim 1 or 2, characterized in that the open end of the sensor receiving chamber is closed with glue.

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