JP3182958U - switch - Google Patents

Abstract

Provided is a switch having a dustproof piece that can be firmly fixed to an insulating main body and has a good effect of preventing dust from passing therethrough.
An insulating main body in which a storage space is formed, a fixed terminal attached to the insulating main body, a movable terminal, and a dust-proof member stored in the storage space of the insulating main body. The insulating body has a front surface and a plurality of side walls. The fixed terminal includes the central terminal 21 provided with the central contact portion 211 and the peripheral terminal 22 provided with the fixed contact portion 221. The movable terminal includes a peripheral contact portion 32 that is held in contact with the fixed contact portion of the peripheral terminal, and a movable contact portion 31 that is away from the central contact portion of the central terminal and can contact the central contact portion. The dust-proof member has an insertion part 41 located on the movable terminal and a peripheral part 43 attached to the front surface of the insulating main body.
[Selection] Figure 2

Description

  The present invention relates to a switch, and more particularly to a depressible dustproof switch used in an electronic device.

  The prior art switch has an open box-shaped insulating body, a central fixed terminal and a peripheral fixed terminal fixed to the insulating main body, a movable terminal, and a cover for covering the insulating main body to prevent dust from passing therethrough. A dustproof piece, a metal lid attached to the insulating main body, and a pressing body protruding from the metal lid. When the pressing body is pressed, the movable terminal comes into contact with the center fixed terminal. The dust-proof piece is provided with an engaging member. An engagement groove that engages with the engagement member is formed in the opening of the insulating body. The dust-proof piece is positioned on the insulating main body by the engagement between the engagement member and the engagement groove.

  Since the dust-proof piece is thin, the dust-proof piece cannot be firmly fixed to the insulating main body due to the engagement between the engagement member and the engagement groove. For this reason, the favorable effect which does not let dust pass is not acquired.

  SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, an object of the present invention is to provide a switch having a dustproof piece that can be firmly fixed to an insulating main body and has a good effect of preventing dust from passing through.

  To achieve the above object, the switch of the present invention is housed in an insulating body in which a housing space is formed, a fixed terminal attached to the insulating body, a movable terminal, and a housing space in the insulating body. A dustproof member. The insulating body has a front surface and a plurality of side walls. The fixed terminal includes a central terminal provided with a central contact portion and a peripheral terminal provided with a fixed contact portion. The movable terminal includes a peripheral contact portion that is held in contact with the fixed contact portion of the peripheral terminal, and a movable contact portion that is separated from the central contact portion of the central terminal and can contact the central contact portion. The dust-proof member has an insertion part located on the movable terminal and a peripheral part attached to the front surface of the insulating main body. A positioning groove is formed on one of the inner surface of at least one of the plurality of side walls of the insulating main body and the insertion portion of the dustproof member, and the other protrudes toward the positioning groove and moves to the positioning groove. A positioning portion that engages with the groove is provided.

  Compared with the prior art, the present invention has the following advantages. The positioning groove and the positioning portion of the present invention are provided on the inner surface of the side wall of the insulating main body and the insertion portion of the dustproof member. Thereby, the dustproof member can be firmly fixed to the insulating main body.

It is an assembly perspective view of the switch of the present invention. It is a disassembled perspective view of the switch shown in FIG. It is the disassembled perspective view which looked at the switch shown in FIG. 2 from another angle. It is a perspective view by which the fixed terminal shown in FIG. 2 is attached to an insulating main body. It is sectional drawing when the switch shown in FIG. 1 is cut along line AA. It is a perspective view when the cover body shown in FIG. 1 leaves | separates from an insulating main body.

  1 to 6, a switch 100 of the present invention is attached to a circuit board (not shown), and includes an insulating main body 1, a fixed terminal 2 attached to the insulating main body 1, and a movable terminal 3. The dustproof member 4, the operation body 5, and the lid body 6 are provided.

  As shown in FIGS. 2-6, the insulating main body 1 is manufactured in the box shape in which the opening part 114 is formed. The insulating body 1 has a front surface 11, a rear wall 12, and a plurality of side walls 13 that extend forward from the rear wall 12 and are coupled to the front surface 11. A storage space 16 communicating with the opening 114 is formed by the rear wall 12 and the plurality of side walls 13. A plurality of engaging portions 111 are provided on the front surface 11 of the insulating main body 1. Each engaging portion 111 is provided with a locking portion 112 protruding in a direction away from the rear wall 12. A positioning groove 113 is formed on the inner surface of the pair of opposing side walls 13 among the plurality of side walls 13. A plurality of protrusions 131 are provided on the outer surfaces of the pair of opposing side walls 13. As shown in FIG. 3, a stepped portion 17 adjacent to the rear wall 12 is provided at the rear portion of the insulating main body 1.

  The fixed terminal 2 includes a center terminal 21 and a peripheral terminal 22. The center terminal 21 includes a center contact portion 211 and a solder connection portion 212 that is bent at a right angle from the center contact portion 211. The peripheral terminal 22 includes a pair of fixed contact portions 221 and a pair of solder connection pieces 222 located on a plane orthogonal to the plane on which the pair of fixed contact portions 221 are located.

  The movable terminal 3 is formed in a dome shape, and has a movable contact portion 31 and a peripheral contact portion 32.

  The dust-proof member 4 includes an insertion portion 41 including an elastic base portion 48 and a peripheral portion 43 formed so as to protrude radially outward from the rear end of the base portion 48 and attached to the front surface 11 of the insulating body 1. And a drive part 42 projecting forward from the base part 48, and a storage groove 47 formed between the insertion part 41 and the drive part 42. The insertion portion 41 is provided with a pressing portion 44 that protrudes backward from the base portion 48 and a plurality of positioning portions 45 that protrude outward. A positioning groove 113 may be formed in the insertion portion 41, and a positioning portion 45 may be provided in the pair of side walls 13. The dustproof member 4 is provided with a square portion 46 for engaging with the engaging portion 111.

  The operation body 5 includes an operation part 51 and a mounting part 52 to be inserted into the storage groove 47.

  The lid body 6 includes a main plate 61 that covers the dust-proof member 4 and a pair of side plates 62 that are bent from the main plate 61. A through-hole 611 through which the operation part 51 of the operation body 5 is passed is formed in the main plate 61 of the lid body 6. A plurality of locking grooves 612 that engage with the plurality of locking portions 112 are formed in the main plate 61 of the lid body 6. In another embodiment, a plurality of locking grooves 612 may be formed on the front surface 11 of the insulating main body 1, and a plurality of locking portions 112 may be provided on the main plate 61 of the lid body 6. Each side plate 62 is provided with a recess 621 and a solder connection leg 622.

  When the switch 100 is assembled, the fixed terminal 2 is fixed to the rear wall 12 of the insulating main body 1. A center contact portion 211 of the center terminal 21 is disposed between the pair of fixed contact portions 221. The solder connection portion 212 and the solder connection piece 222 of the fixed terminal 2 are exposed to the outside through a through hole provided in the stepped portion 17 of the insulating main body 1. The movable terminal 3 is attached in front of the fixed terminal 2. The peripheral contact portion 32 of the movable terminal 3 is held in contact with the fixed contact portion 221 of the fixed terminal 2. The movable contact portion 31 of the movable terminal 3 is held away from the central contact portion 211 of the fixed terminal 2.

  The dustproof member 4 is attached to the insulating main body 1. The pressing portion 44 of the dustproof member 4 is positioned in front of the movable contact portion 31 of the movable terminal 3, the plurality of positioning portions 45 are engaged with the positioning grooves 113 of the insulating body 1, and the peripheral portion 43 adheres to the front surface 11 of the insulating main body 1, and the plurality of angular portions 46 engage with the plurality of engaging portions 111. The peripheral portion 43 does not come into contact with the circuit board due to the front surface 11 and the engagement of the positioning portion 45 and the positioning groove 113. Due to the engagement between the positioning portion 45 and the positioning groove 113, the dustproof member 4 cannot rotate with respect to the insulating main body 1. The mounting portion 52 of the operating body 5 is inserted into the storage groove 47 of the dustproof member 4, and the driving portion 42 is inserted into the operating portion 51. The main plate 61 of the lid 6 is attached to the peripheral portion 43 of the dust-proof member 4, and the operation portion 51 protrudes forward from the through hole 611. The recess 621 of the side plate 62 engages with the protrusion 131 of the insulating main body 1. In another embodiment, the recess 621 may be formed in the insulating main body 1, and the protrusion 131 may be provided in the lid body 6.

  When the operation part 51 and the drive part 42 are pressed backward, the elastic base 48 moves the pressing part 44 backward to press the movable contact part 31 of the movable terminal 3. The movable contact portion 31 to be pressed comes into contact with the central contact portion 211 of the fixed terminal 2. When the force that presses the operation unit 51 and the driving unit 42 backward is removed, the pressing unit 44 and the movable terminal 3 are returned to the original state by the elastic base 48.

  As mentioned above, although this invention was demonstrated in detail with reference to preferable embodiment, embodiment is an illustration to the last and is not limited to these. In the above description, any modification or change of details that can be made based on the present invention belongs to the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 100 Switch 1 Insulating main body 11 Front surface 111 Engagement part 112 Locking part 113 Positioning groove 114 Opening part 12 Rear wall 13 Side wall 131 Projection part 16 Storage space 17 Staircase part
2 fixed terminal 21 central terminal 211 central contact part 212 solder connection part 22 peripheral terminal 221 fixed contact part 222 solder connection piece 3 movable terminal 31 movable contact part 32 peripheral contact part 4 dustproof member 41 insertion part 42 drive part 43 peripheral part 44 pressing Part 45 Positioning part 46 Square part 47 Storage groove 48 Base part 5 Operating body 51 Operating part 52 Mounting part 6 Cover body 61 Main plate 611 Through hole 612 Locking groove 62 Side plate 621 Recess 622 Solder connection leg

Claims (6)

An insulating body in which a storage space is formed and having a front surface and a plurality of side walls;
A fixed terminal attached to the insulating body and having a central terminal provided with a central contact portion and a peripheral terminal provided with a fixed contact portion;
A peripheral contact portion attached to the insulating body and held in contact with the fixed contact portion of the peripheral terminal, a movable contact portion that is away from the central contact portion of the central terminal and is capable of contacting the central contact portion, A movable terminal having
A dust-proof member that is housed in the housing space of the insulating body and has an insertion portion located on the movable terminal, and a peripheral portion that is attached to the front surface of the insulating body;
With
A positioning groove is formed on one of the inner surface of at least one of the plurality of side walls of the insulating main body and the insertion portion of the dustproof member, and the other protrudes toward the positioning groove and moves to the positioning groove. A switch comprising a positioning portion that engages with a groove.   The positioning groove is formed on the inner surface of a pair of corresponding side walls of the plurality of side walls of the insulating body, the positioning portion is provided in the insertion portion of the dustproof member, and the insertion portion is elastic. And a pressing portion that protrudes backward from the base portion, and the dustproof member has a driving portion that protrudes forward from the base portion, and when the driving portion is pressed backward, the elastic member 2. The switch according to claim 1, wherein the pressing portion moves backward by the base and presses the movable contact portion of the movable terminal.   A plurality of engaging portions are provided on the front surface of the insulating main body, and the dustproof member has a peripheral portion protruding from the insertion portion to the outer periphery, and the peripheral portion includes the insulating main body. The switch according to claim 2, wherein a plurality of square portions corresponding to the engaging portions are provided.   4. The storage groove is formed between the insertion portion and the drive portion, and the switch includes an operation body provided with an operation portion and a mounting portion to be inserted into the storage groove. The listed switch.   The switch according to claim 4, wherein the switch has a cover attached to the insulating main body, and the cover is formed with a through hole through which an operation portion of the operation body is passed.   The lid includes a main plate that covers the dust-proof member, and a pair of side plates that are bent from the main plate, and one of the engaging portion of the insulating main body and the main plate of the lid is connected to the main plate. The switch according to claim 5, wherein a stop portion is provided, and a locking groove that engages with the locking portion is formed on the other side.