CN209929181U

CN209929181U - Light-touch switch for preventing soldering flux

Info

Publication number: CN209929181U
Application number: CN201921140972.5U
Authority: CN
Inventors: 孙传松
Original assignee: Dongguan Yijia Electronic Technology Co Ltd
Current assignee: Dongguan Yijia Electronic Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-01-10
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a prevent dabbing switch of scaling powder, it moulds the five gold sheets of dabbing switch in dabbing switch base including dabbing switch base and package, dabbing switch five gold sheets includes terminal part, contact portion, bearing portion and choked flow portion, terminal part, contact portion, bearing portion and choked flow portion integrated into one piece, a thimble hole that accesss to bearing portion is seted up to the bottom of dabbing switch base, the terminal part is located one side of contact portion, bearing portion sets up in the lower extreme of contact portion, choked flow portion sets up around bearing portion, choked flow portion includes the choked flow recess of at least one concentric setting, be provided with on the dabbing switch base with choked flow recess assorted choked flow boss, the choked flow recess forms one with the choked flow boss and prevents that the scaling powder from stretching from thimble hole and get into the inside choked flow structure of dabbing switch base. The utility model discloses a choked flow recess has effectively blocked the scaling powder with the choked flow boss and has flowed in the inside of dabbing the switch, and the practicality is strong.

Description

Light-touch switch for preventing soldering flux

Technical Field

The utility model relates to an electronic components technical field, in particular to prevent dabbing switch of scaling powder.

Background

With the continuous development of society and the continuous development of scientific level, electronic components have become one of the indispensable things in our daily life, and the light touch switch is an important component part thereof, so that the light touch switch can be widely used in the market. At present, the tact switch has the advantages of convenient use, low cost and the like, and has wide application in electronic chips, industrial equipment and domestic electric appliances. The touch switch is characterized in that the elastic sheet is arranged on the base, the elastic sheet is deformed under stress or elastically restored to be in contact with the contact, so that the switch is communicated, when an operator applies pressure to the elastic sheet through the button, the switch is closed and communicated, and when the pressure is removed, the switch is disconnected.

At present, the waterproof type of current most dabs the switch base all takes the hardware and the plastic inserts form of moulding plastics the combination to prepare, but because the structural problem of plastic mould, must hold the hardware by holding in the palm the needle, in order to prevent off normal and running glue, hold in the palm the needle and hold the hardware and accomplish base injection moulding back, can leave over the support pinhole on the base, because dabbing the switch and need adopting welded manufacturing procedure, can use the scaling powder to assist man-hour adding, consequently, after welding process accomplishes, dabbing the bottom of switch base can produce a large amount of scaling powder, and then lead to the scaling powder to get into the inside of dabbing the switch through holding in the palm the pinhole, thereby the performance of switch is dabbed in the influence.

Therefore, the utility model provides an effectively block scaling powder inflow and dabble the switch inside, solve above problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to the defect that exists among the above-mentioned prior art, provide a prevent dabbing switch of scaling powder, form the choked flow structure through the cooperation of choked flow recess and choked flow boss, effectively blocked the inside that the scaling powder flows in dabbing switch to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model discloses the technical scheme who takes as follows:

the utility model provides a prevent dabbing switch of scaling powder, its includes dabs the switch base and moulds the switch five gold sheets of dabbing in dabbing the switch base with the package, dabbing switch five gold sheets includes terminal part, contact portion, bearing portion and choked flow portion, terminal part, contact portion, bearing portion and choked flow portion integrated into one piece, a thimble hole that leads to the bearing portion is seted up to the bottom of dabbing the switch base, the terminal part is located one side of contact portion, bearing portion sets up in the lower extreme of contact portion, the choked flow portion sets up around the bearing portion, the choked flow portion includes the choked flow recess of at least one concentric setting, be provided with on the dabbing switch base with choked flow recess assorted choked flow boss, the choked flow recess forms one with the choked flow boss and prevents that the scaling powder from stretching from the thimble hole and getting into the inside choked flow structure of dabbing the switch base.

As a further elaboration of the above technical solution:

in the above technical solution, the terminal portion is provided with a bending portion, the bending portion divides the terminal portion into a first terminal portion and a second terminal portion, one side of the tact switch base is provided with a terminal portion fixing hole matched with the terminal portion, the first terminal portion is horizontally fixed inside the terminal portion fixing hole, the bending portion is obliquely fixed inside the terminal portion fixing hole, and the second terminal portion is exposed at the bottom of the tact switch base and connected with the terminal portion.

In the above technical scheme, the light touch switch base is internally provided with an accommodating groove for installing the metal elastic sheet, the bottom of the accommodating groove is provided with a mounting groove and is located at the upper end of the thimble hole, the second terminal part and the contact part are clamped in the mounting groove, the upper end surface of the second terminal part is parallel to the bottom plane of the accommodating groove, and the upper end surface of the contact part is higher than the bottom plane of the accommodating groove.

In the above technical scheme, the cross section of the flow blocking boss is in an arc structure.

In the above technical scheme, the tact switch base is a tact switch plastic base.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses novel structure, reasonable in design forms the choked flow structure through adopting the choked flow recess and choked flow boss, can prevent effectively that the scaling powder from stretching from the thimble hole and getting into the inside of dabbing the switch base, has protected the inner structure of dabbing the switch not receive the destruction and the erosion of scaling powder, has improved the wholeness ability and the precision of dabbing the switch and has improved the quality and the life of dabbing the switch, and the practicality is strong.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be described in further detail with reference to fig. 1.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in figure 1, the light-touch switch for preventing soldering flux comprises a light-touch switch base 1 and a light-touch switch hardware 2 coated and molded in the light-touch switch base 1, the light touch switch hardware 2 comprises a terminal part 21, a contact part 22, a supporting part 23 and a choke part 24, the terminal part 21, the contact part 22, the bearing part 23 and the choke part 24 are integrally formed, the bottom of the light-touch switch base 1 is provided with a thimble hole 11 leading to the bearing part 23, the terminal portion 21 is located at one side of the contact portion 22, the support portion 23 is located at the lower end of the contact portion 22, the choke portion 24 is disposed around the support portion 23, the choke portion 24 includes at least one concentrically disposed choke groove, the light touch switch base 1 is provided with a flow blocking boss 12 matched with the flow blocking groove, and the flow blocking groove and the flow blocking boss 12 form a flow blocking structure for preventing soldering flux from spreading from a top pinhole to enter the light touch switch base 1.

In this embodiment, the light touch switch base 1 is injection-molded and coated outside the light touch switch base 2 through a mold, the light touch switch base 2 is held by a needle holder in the injection molding process to prevent deviation and glue leakage, after the light touch switch base 1 is injection-molded by holding the light touch switch base 2 by the needle holder, a needle holding hole 11 is left on the light touch switch base 1, and since the light touch switch needs to adopt a welding processing procedure, a soldering flux is used for assistance in processing, after the welding procedure is completed, a large amount of soldering flux is generated at the bottom of the light touch switch base 1, and then the soldering flux enters the inside of the light touch switch through the needle holding hole 11, and the present invention performs laser firing on the light touch switch base 2 and around the needle holding hole 11 to form at least one flow holding groove by adding the structural design of the flow holding groove and the flow holding boss 12, when the light-touch switch base 1 is subjected to injection molding, plastic can fill the flow-resisting grooves, the plastic filled with the flow-resisting grooves forms the flow-resisting bosses 12, after the flow-resisting grooves are filled with the plastic, soldering flux enters from the pin supporting holes 11, and the flow-resisting grooves are formed in the periphery and filled with the plastic, so that the soldering flux is blocked when flowing and cannot enter the light-touch switch.

As a further improvement of this embodiment, a bending portion is disposed on the terminal portion 21, the bending portion divides the terminal portion 21 into a first terminal portion and a second terminal portion, a terminal portion fixing hole matched with the terminal portion is formed on one side of the base of the tact switch, the first terminal portion is horizontally fixed inside the terminal portion fixing hole, the bending portion is obliquely fixed inside the terminal portion fixing hole, and the second terminal portion is exposed at the bottom of the base of the tact switch and connected with the terminal portion.

As a further improvement in this embodiment, an accommodating groove 13 for mounting a metal elastic sheet is disposed inside the tact switch base 1, a mounting groove 14 is disposed at the bottom of the accommodating groove 13 and located at the upper end of the thimble hole 11, the second terminal portion and the contact portion 21 are clamped inside the mounting groove 14, the upper end surface of the second terminal portion is parallel to the bottom plane of the accommodating groove 13, and the upper end surface of the contact portion 21 is higher than the bottom plane of the accommodating groove 13.

As a further improvement in this embodiment, the cross section of the flow blocking boss 12 is in an arc structure.

As a further improvement in this embodiment, the tact switch base 1 is a tact switch plastic base.

In this embodiment, the tact switch base 1 is made of plastic material, so as to complete the processing and injection molding, thereby reducing the production cost, improving the working efficiency and improving the product competitiveness.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a prevent dabbing switch of scaling powder, its characterized in that, it includes dabs the switch base and moulds the switch five gold sheets of dabbing in dabbing the switch base with the package, dabbing the switch five gold sheets and including terminal part, contact portion, bearing portion and choked flow portion, terminal part, contact portion, bearing portion and choked flow portion integrated into one piece, a thimble hole that leads to the bearing portion is seted up to the bottom of dabbing the switch base, the terminal part is located one side of contact portion, bearing portion sets up in the lower extreme of contact portion, the choked flow portion sets up around the bearing portion, the choked flow portion includes the choked flow recess of at least one concentric setting, be provided with on the dabbing switch base with choked flow recess assorted choked flow boss, the choked flow recess forms one with the choked flow boss and prevents that the scaling powder from stretching from the thimble hole and getting into the choked flow structure of dabbing the.

2. The light-touch switch of claim 1, wherein the terminal portion is provided with a bending portion, the bending portion divides the terminal portion into a first terminal portion and a second terminal portion, one side of the light-touch switch base is provided with a terminal portion fixing hole matching with the terminal portion, the first terminal portion is horizontally fixed inside the terminal portion fixing hole, the bending portion is obliquely fixed inside the terminal portion fixing hole, and the second terminal portion is exposed at the bottom of the light-touch switch base and connected with the terminal portion.

3. The light-touch switch capable of preventing the scaling powder according to claim 2, wherein a containing groove for installing a metal elastic sheet is arranged inside the light-touch switch base, a placing groove is formed in the bottom of the containing groove and located at the upper end of the thimble hole, the second terminal portion and the contact portion are clamped inside the placing groove, the upper end face of the second terminal portion is parallel to the bottom plane of the containing groove, and the upper end face of the contact portion is higher than the bottom plane of the containing groove.

4. The light-touch switch of flux-preventing agent of claim 1, wherein the cross section of the flow-blocking boss is in a circular arc structure.

5. The light-touch switch of claim 1, wherein the light-touch switch base is a plastic light-touch switch base.