CN220020928U - Dustproof magnetic attraction micro-switch - Google Patents

Abstract

The utility model relates to a dustproof magnetic micro switch which is characterized by comprising an insulating shell, wherein a movable button is arranged at the end part of the insulating shell, the movable button moves along the height direction of the insulating shell and is movably connected with a movable rod, an overload protection spring is arranged in the movable button, one end of the overload protection spring is abutted against the end surface of the movable rod, and a movable dust ring is arranged at the part of the movable button, which is positioned outside the insulating shell. The dust-proof ring is arranged, so that the dust-proof ring can move downwards along with the movable button and seal the gap when the movable button is pressed, and dust is prevented from entering the inside of the micro switch; secondly, an overload protection spring is also arranged for realizing overload protection; in addition, an arc-absorbing magnet is arranged on the insulating shell, so that when the contact points are contacted with the silver contact points, generated electric arcs can be absorbed.

Description

Dustproof magnetic attraction micro-switch

Technical Field

The utility model relates to the technical field of micro-switches, in particular to a dustproof magnetic micro-switch.

Background

Chinese patent CN200820183103.6, publication No. is a micro switch, comprising a base, a moving contact fixing seat, a push rod and a return spring, wherein the base has a groove, and a left fixed contact, a left two fixed contacts, a right fixed contact and a right two fixed contacts are respectively and oppositely embedded and fixed on the left and right sides of the groove; the fixed base of the movable contact is provided with a first movable contact metal plate and a second movable contact metal plate which are parallel to each other at intervals, a left first movable contact, a left second movable contact, a right first movable contact and a right second movable contact are respectively arranged at the left end and the right end of the first movable contact metal plate and the right end of the second movable contact metal plate in a corresponding manner, the left movable contact, the left second movable contact, the right movable contact and the right movable contact are respectively arranged in a corresponding manner, the fixed base of the movable contact is arranged in a groove on the base in a sliding manner, and the left end and the right end of the first movable contact metal plate and the right end of the second movable contact metal plate are respectively fixedly provided with a fixed spring; the ejector rod is fixed on the moving contact fixing seat and extends out of the rear side wall of the base shell: the reset spring is arranged between the rear end face of the movable contact fixing seat and the rear side wall of the base. However, when the ejector rod moves, a gap exists between the inside and the outside of the switch, so that external dust can enter the inside to influence the use.

Disclosure of Invention

The utility model aims to provide a dustproof magnetic micro switch so as to solve the technical problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a micro-gap switch is inhaled to dustproof magnetism, its characterized in that includes insulating housing, insulating housing's tip is provided with the activity and presses the son, the activity is pressed the son and is followed insulating housing's direction of height removal and swing joint have movable rod, the activity is pressed the intraductal overload protection spring that is provided with, overload protection spring's one end offsets with the terminal surface of movable rod, the activity is pressed the portion that the son is located insulating housing outward and is provided with movable dust ring.

The utility model further provides that two groups of pin groups are arranged in the insulating shell, each pin group comprises a long pin and a short pin, corresponding contacts are formed on the long pin and the short pin, spring sleeved columns are formed on two sides of the movable rod, a jumping spring is arranged on each spring sleeved column, the other end of each jumping spring is connected with a jumping contact piece, silver contacts are arranged on two sides of each jumping contact piece, and the movable rod moves under the action of the movable button and drives the corresponding jumping springs to enable the silver contacts to be in contact with or separated from the contacts.

The utility model further provides that the insulating shell is provided with the arc-absorbing magnet, and the arrangement position of the arc-absorbing magnet corresponds to the contact position of the contact and the silver contact.

The utility model further provides that a spring support is arranged outside the movable rod, and a reversing spring is arranged between the spring support and the bottom of the insulating shell.

The utility model further provides that the arc-absorbing magnets are positioned on two sides of the insulating shell.

The utility model has the beneficial effects that: the dust-proof ring is arranged, so that the dust-proof ring can move downwards along with the movable button and seal the gap when the movable button is pressed, and dust is prevented from entering the inside of the micro switch; secondly, an overload protection spring is also arranged for realizing overload protection; in addition, an arc-absorbing magnet is arranged on the insulating shell, so that the generated arc can be absorbed when the contact and the silver contact touch.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic diagram of an internal structure of an embodiment of the present utility model.

Fig. 2 is a front view of an embodiment of the present utility model.

The reference numerals are given to the figures,

10. an insulating housing; 20. a movable button; 30. a movable rod; 40. an overload protection spring; 50. a movable dust ring; 60. a long pin; 70. a short pin; 80. a contact; 90. the spring is sleeved with a column; 100. a jumping spring; 110. jumping contact pieces; 120. a silver contact; 130. an arc-absorbing magnet; 140. a spring bracket; 150. a reversing spring;

Detailed Description

The following detailed description of embodiments of the present utility model will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present utility model can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

As shown in fig. 1-2, the utility model relates to a dustproof magnetic micro switch, which comprises an insulating shell 10, wherein a movable button 20 is arranged at the end part of the insulating shell 10, the movable button 20 moves along the height direction of the insulating shell 10 and is movably connected with a movable rod 30, an overload protection spring 40 is arranged in the movable button 20, one end of the overload protection spring 40 is abutted against the end surface of the movable rod 30, and a movable dust ring 50 is arranged at the part of the movable button 20 positioned outside the insulating shell 10.

Two groups of pin groups are arranged in the insulating housing 10, each pin group comprises a long pin 60 and a short pin 70, corresponding contacts 80 are formed on the long pin 60 and the short pin 70, spring sleeved posts 90 are formed on two sides of the movable rod 30, a jumping spring 100 is arranged on each spring sleeved post 90, the other end of each jumping spring 100 is connected with a jumping contact 110, silver contacts 120 are arranged on two sides of each jumping contact 110, and the movable rod 30 moves under the action of the movable press 20 and drives the corresponding jumping springs 100 to enable the silver contacts 120 to be in contact with the contacts 80 or be separated from each other.

The insulating housing 10 is provided with an arc-absorbing magnet 130, and the installation position of the arc-absorbing magnet 130 corresponds to the contact position of the contact 80 and the silver contact 120.

The movable rod 30 is further provided with a spring bracket 140, and a reversing spring 150 is disposed between the spring bracket 140 and the bottom of the insulating housing 10. The arc-absorbing magnets 130 are located at both sides of the insulating housing 10.

The utility model is provided with the dustproof ring, and can move downwards along with the movable button 20 and seal the gap when the movable button 20 is pressed, so as to prevent dust from entering the inside of the micro switch: an overload protection spring 40 is further arranged for overload protection; further, an arc-absorbing magnet 130 is provided on the insulating housing 10, and can absorb an arc generated when the contact 80 and the silver contact 120 come into contact with each other.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as disclosed herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (5)

1. The utility model provides a micro-gap switch is inhaled to dustproof magnetism, its characterized in that includes insulating housing, insulating housing's tip is provided with the activity and presses the son, the activity is pressed the son and is followed insulating housing's direction of height removal and swing joint have movable rod, the activity is pressed the intraductal overload protection spring that is provided with, overload protection spring's one end offsets with the terminal surface of movable rod, the activity is pressed the portion that the son is located insulating housing outward and is provided with movable dust ring.

2. The dustproof magnetic micro switch according to claim 1, wherein two groups of pin groups are arranged in the insulating shell, each pin group comprises a long pin and a short pin, corresponding contacts are formed on the long pin and the short pin, spring sleeved posts are formed on two sides of the movable rod, a jumping spring is arranged on the spring sleeved posts, the other end of the jumping spring is connected with a jumping contact piece, silver contacts are arranged on two sides of the jumping contact piece, and the movable rod moves under the action of the movable button and drives the jumping spring to enable the silver contacts to be in contact with the contacts or separated from the contacts.

3. The dustproof magnetic micro switch as set forth in claim 2, wherein the insulating housing is provided with an arc-attracting magnet, and the arc-attracting magnet is disposed at a position corresponding to a contact position between the contact and the silver contact.

4. A dust-proof magnetic micro-switch as claimed in claim 1, 2 or 3, wherein a spring support is further provided outside the movable rod, and a reversing spring is provided between the spring support and the bottom of the insulating housing.

5. A dust-proof magnetically attractable microswitch as claimed in claim 3 wherein said arc-attractable magnets are located on either side of said insulated housing.