TW201318014A - Conducting structure of micro switch - Google Patents

Abstract

Disclosed is a conducting structure of a micro switch and particularly a conducting structure which can let a user sense the reciprocating movement of the switch bottom and be waterproof. The structure comprises an electrode set installed in an accommodation chamber at the top of a base and a shaft barrel slidably installed in the accommodation chamber; a cone cover made of soft and high temperature resistant material is installed between the shaft barrel and the electrode seat. A metal conducting block installed at the top of the cone cover. The conducting block can be driven by the shaft barrel to compress and release the cone cover and form or break the connection between the conducting block and electrode set, and the shaft barrel can produce the press touch of the reciprocating movement to the user; a kit made of soft and high temperature resistant material is installed on the accommodation chamber which can block the fluid from penetrating into the accommodation chamber from the outside, thus prolonging the service life of the switch.

Description

Conductive structure of micro switch

The present invention provides a conductive structure of a micro switch, and particularly relates to a conductive structure that can be perceived by a switch to reciprocate and be waterproof, and relates to a receiving groove of the switch base, and an electrode set inside and outside the receiving groove. The shaft tube and the waterproof kit, in particular, the tapered sleeve and the conductive block in the receiving groove.

According to the electronic switch, the specifications and sizes are very wide, and the application range is quite wide. Generally, the electronic switches that are commonly used in precision equipment, small equipment or small appliances are mostly called smart switches, micro switches or light touches. Switches, because of their relatively short and light size, can be used in electronic equipment or instruments where space is limited or only small or micro switches can be installed, such as 3C electronics or microcomputers.

It is known that the conventional micro switch is mainly composed of a plastic base, a movable shaft and a button, and an electrode group and a conductive elastic piece are arranged in one of the receiving grooves of the base, and the action mode is a touch button. The movable shaft is pressed against the conductive elastic piece, so that the conductive elastic piece is twisted and contacts the positive and negative switching electrodes of the electrode group to achieve the purpose of turning on and off the power supply. The bottom of the base is generally provided with a plurality of conductive terminals of positive and negative switch electrodes. The base can be disposed on the circuit board of the electronic device or the instrument, and the conductive terminals and the circuit surface of the circuit board are soldered to each other by solder paste.

The above-mentioned conventional conductive elastic piece has a very short change distance of twisting and restoring, so that the switch can be opened and closed in a light touch manner; however, since the micro switch using the conductive elastic piece does not have an easily detectable opening and closing action, when the foregoing Microswitches using conductive shrapnel are often difficult to use when the buttons of an electronic device or instrument need to be designed to provide a human hand to sense their reciprocating motion.

In addition, since the receiving groove of the surface of the base of the conventional micro switch is open to the outside atmosphere, moisture or external liquid in the atmosphere easily enters the receiving groove along the movable axis, thereby affecting the movable shaft, the electrode group and the conductive The movement between the shrapnel is easy to cause the electrode group and the conductive elastic piece to rust, resulting in poor operation or damage of the tact switch.

Therefore, the above problems will be the difficulties that the technicians in this field want to solve.

The main object of the present invention is to provide a conductive structure for a person to perceive that the switch knob reciprocates and is waterproof, so as to overcome the above-mentioned prior art, the micro switch which conventionally uses the conductive elastic piece does not have an easily detectable opening and closing action. The problem is limited in its use, and overcomes the fact that the inside of the traditional micro-switch is directly open to the outside atmosphere, so that the water vapor or the external liquid in the atmosphere easily enters the inside of the switch, causing problems such as poor switching operation or damage, thereby raising the switch. Durable service life.

In order to achieve the above object, the conductive structure of the microswitch of the present invention comprises: a pedestal, the top portion forming a receiving groove; and an electrode group disposed at a bottom of the accommodating groove, having a plurality of extensions to the bottom of the pedestal a conductive terminal; a shaft sleeve, the bottom end is slidably disposed in the accommodating groove, and is guided by the inner wall of the accommodating groove to approach and disengage the electrode group, the top end of the shaft barrel is exposed on the top of the pedestal; a downwardly expanding tapered sleeve made of a soft high temperature resistant material and disposed in the receiving groove between the shaft barrel and the electrode group; and a conductive block made of a metal material and disposed on the The top of the tapered sleeve is driven by the barrel to compress and release the tapered sleeve, so that the conductive block contacts and disengages from the electrode set, and the electrode set is turned on and off, and the conductive block and the bottom of the tapered sleeve There is a traveler that senses the travel distance of the reciprocating movement of the barrel.

By the above, the barrel can generate a reciprocating movement that can be perceived by the taper sleeve via the tapered sleeve, and the reciprocating movement provides a pressing feel perceived by the human hand, thereby providing an alternative to the use of the microswitch.

In addition, the present invention also includes: a top surface of the pedestal forming a ring surface at the periphery of the accommodating groove, and a sleeve made of a soft refractory material is disposed above the accommodating groove, the kit covers the shaft barrel, and the outer periphery of the sleeve Extending to form a ring rib attached to the torus, and blocking external liquid from penetrating into the receiving groove; thus, the kit covers the receiving groove via the ring rib to block external moisture or liquid from penetrating into the receiving groove, The electrode group and the conductive block in the accommodating groove are prevented from being rusted.

The kit is capable of transmitting light, and a light-transmitting button is arranged on the top of the kit; a pair of grooves are formed in the bottom of the sleeve, and a top end of the sleeve is embedded in the groove; a bottom of the ring rib is formed in the receiving groove a peripheral ring groove, and a convex ring embedded in the ring groove is formed on the ring surface.

The outer peripheral wall of the base is formed with two symmetrical outer hook portions, and a ring member is sleeved around the outer sleeve, and the ring rib is clamped between the ring member and the annular surface, and the ring member is oriented toward the outer hook portion. Extending to form a symmetrical first frame piece, the first frame piece is formed with a groove portion buckled on the outer hook portion; the ring member extends toward the base to form two symmetrical second frame pieces, and The pedestal is positioned between the first frame piece and the second frame piece.

The inner wall of the accommodating groove forms two symmetrical inner hook portions, and the outer peripheral wall of the yoke tube forms two symmetrical convex portions, respectively receiving the inner hook portion stops.

a cylindrical groove is formed in the top of the shaft tube, a light emitting diode is disposed in the cylindrical groove, and the light emitting diode has two pins extending to the bottom of the base; the outer peripheral wall of the cylindrical tube forms two symmetry and communicates with the tube a guiding groove of the slot, wherein the pins of the LED extend respectively to the bottom of the base via the guiding slot.

However, in order to clearly and fully disclose the present invention, the preferred embodiments are illustrated, and the detailed description of the embodiments will be described as follows:

Referring to the first drawing, a perspective view of a preferred embodiment of the present invention is disclosed, and the conductive structure of the microswitch of the present invention is described with reference to the second to seventh embodiments, including a rectangular base 10, an electrode group 20, and an axis. a sleeve 30, a tapered sleeve 40 which is expanded from the top to the bottom, and a conductive block 50. The top of the base 10 defines a receiving groove 11 and a ring surface 12 at the periphery of the receiving groove 11; The group 20 is disposed at a bottom 111 of the bottom of the accommodating groove 11, and the electrode group 20 includes a positive electrode 21 and a negative electrode 22, and the positive and negative electrodes 21 and 22 each have a conductive terminal extending to the bottom of the susceptor 10. 25; In fact, the conductive terminals 25 may extend to both sides of the bottom of the base 10.

The bottom end of the shaft barrel 30 is slidably disposed in the accommodating groove 11 and can be guided by the inner wall of the accommodating groove 11 to approach and disengage the electrode group 20 of the groove bottom 111 of the accommodating groove 11. The top end of the shaft barrel 30 is exposed. The outside of the slot 11 is located at the top of the base 10, and the top of the barrel 30 forms an open-opening slot 31. The top end of the barrel 30 can receive an external force to push the shaft 30 toward the slot bottom 111. .

The tapered sleeve 40 is made of a soft refractory material and is disposed in the accommodating groove 11 between the barrel 30 and the electrode group 20; the conductive block 50 is made of a metal material and is disposed on the cone The top of the sleeve 40 can move up from the bottom to the upper elastic driving conductive block 50, and the conductive block 50 is pushed against the bottom of the barrel 30 to move toward the slot 112 of the top of the receiving slot 11, and is electrically conductive. The block 50 can be driven by the bottom of the barrel 30 to compress and release the tapered sleeve 40, and the conductive block 50 is brought into contact with and detached from the electrode assembly 20 to turn on and off the electrode assembly 20. The bottom of the conductive block 50 and the tapered sleeve 40 There is a stroke distance h1 between the bottoms of the donor sensing barrel 30, and the soft refractory material can be silicone.

A light-emitting diode 60 is fixed in the cavity 31, and the light-emitting diode 60 has two positive pins 61 and a negative pin 62 extending to the bottom of the base 10, and the positive and negative pins 61 62 extends to the two sides of the light-emitting diode 60 and straddles the symmetrical position on the annular surface 12.

A sleeve 70 made of a soft high-temperature resistant light-transmitting material is disposed above the accommodating groove 11, and the sleeve 70 is covered over the barrel 30, the slot 31 and the LED body 60, and the periphery of the sleeve 70 extends adjacent to the bottom. A ring rib 71 is formed to be attached to the annular surface 12 to block the penetration of external liquid into the interior of the receiving groove 11, and a plurality of annular grooves 72 are formed in the periphery of the sleeve 70, and the annular groove 72 can be used to compress the kit 70 up and down. The soft high temperature resistant light transmissive material can be silicone.

A recess 73 corresponding to the accommodating groove 11 is formed in the bottom of the sleeve 70. The top end of the sleeve 30 is embedded in the recess 73, and the top of the sleeve 70 is sleeved with a light-transmissive button 80 having a square, polygonal or circular outline. The bottom of the button 80 forms a positioning groove 81 that is fitted to the top of the supply kit 70.

With the above structural composition, the susceptor 10 can be placed on the surface of the circuit board, and the conductive terminals 25 and the positive and negative pins 61, 62 respectively contact the metal lines on the surface of the circuit board; subsequently, the circuit can be The board is transferred to a tin furnace for surface mount (SMT) operation, and the conductive terminals 25 and the positive and negative pins 61, 62 are respectively soldered to the metal lines on the surface of the board.

In general use, since the sleeve 70 and the tapered sleeve 40 are both flexible, when the top of the button 80 receives an external force to press downward (as shown in FIG. 8), the sleeve 70 can be compressed and deformed downward. The driving shaft barrel 30 is moved downward, so that the bottom of the shaft barrel 30 is pushed downward by the upper and lower conductive blocks 50 to contact the positive and negative electrodes 21 and 22, so that the positive and negative electrodes 21 and 22 are mutually connected. The conduction is such that the metal line is electrically connected to the positive and negative electrodes 21 and 22 via the conductive terminal 25.

When the force of the pressure button 80 and the barrel 30 disappears, the elastic force of the cone 40 drives the conductive block 50, the barrel 30 and the button 80 to move up by the stroke distance h1, and the positive and negative are cut off. The electrodes 21, 22 cause the metal line to be in an open state.

During the period of time, the LEDs 60 can be powered by the metal lines through the positive and negative pins 61 and 62, and the light of the LEDs 60 can be sent to the outside through the kit 70 and the button 80. The user is prompted to know the position and use status of the switch.

It is worth mentioning that the kit 70 can cover the accommodating groove 11 via the ring rib 71 to block the outside water or liquid from penetrating into the accommodating groove 11, and prevent the electrode group 20 in the accommodating groove 11 from emitting light. The diode 60 and the conductive block 50 are rusted.

Accordingly, the present invention can generate a light source by the light emitting diode 60, and the barrel 30 can generate a reciprocating movement that can be perceived by the tapered sleeve 40 by the stroke distance h1, and the reciprocating movement supplies a pressing feeling perceived by the human hand. In order to overcome the above prior art, the micro switch which conventionally adopts the conductive elastic piece does not have an easily detectable opening and closing action, which causes a limitation in its use, thereby providing another option for the use of the micro switch; The accommodating groove 11 is covered by the kit 70 to overcome the above-mentioned prior art, the inside of the conventional tact switch is directly open to the outside atmosphere, and the moisture or the external liquid in the atmosphere is easily entered into the switch, resulting in poor operation or damage of the switch. Wait for the problem, which in turn increases the durable life of the switch.

The other embodiments of the present invention are further described. The outer peripheral wall of the base 10 is formed with two symmetrical hook portions 13. The outer peripheral wall of the sleeve 70 is sleeved with a metal ring member 90, and the ring rib 71 of the outer peripheral wall of the sleeve 70 is clamped to Between the ring member 90 and the annular surface 12, and the periphery of the ring member 90 extends toward the hook portion 13 to form a symmetrical first frame piece 91. The first frame piece 91 is formed with a hook portion 13 The groove portion 911; thus, the ring member 90 can be held by the ring member 90 on the top of the base 10 and tightly clamped between the ring member 90 and the annulus 12 to make the ring member 90 The ring rib 71 and the annular surface 12 are watertight.

A ring opening 93 is formed in the center of the ring member 90, and a periphery of the ring member 90 extends toward the base 10 to form a second symmetrical frame member 92. The peripheral wall of the base member 10 is positioned at the center of the ring member 90. Between the first frame piece 91 and the second frame piece 92.

A ring groove 711 is formed on the bottom of the ring rib 71 at the periphery of the receiving groove 11, and a ring 121 is formed on the ring surface 12 to be inserted into the ring groove 711. Thus, the ring rib 71 and the ring surface 12 can be further enhanced. Water tightness.

The outer peripheral wall of the barrel 30 forms two guiding grooves 32 which are symmetrical and communicate with the cylindrical groove 31, and the guiding groove 32 extends to communicate with one of the slots 311 at the top of the cylindrical groove 31, and the positive electrode of the light emitting diode 60 The negative electrode pins 61 and 62 respectively extend to the bottom of the base 10 via the guiding groove 32. Thus, during the reciprocating movement of the barrel 30 by the external force, the positive and negative pins 61 and 62 can be evaded via the guiding groove 32. .

The inner wall of the accommodating groove 11 is formed with two symmetrical inner hook portions 113. The outer peripheral wall of the shaft cylinder 30 forms two symmetrical convex portions 33, respectively receiving the inner hook portion 113 and restraining the inner hook portion 113. The shaft cylinder 30 moves in the accommodating groove 11.

In addition, since the tapered sleeve 40 and the sleeve 70 made of silicone have high temperature resistance, the tapered sleeve 40 and the sleeve 70 can enter the tin furnace along with the barrel 30 and the base 10, thereby further saving Process.

Moreover, the tapered sleeve 40 and the sleeve 70 are provided with soft elasticity, which can effectively mitigate the impact force of the conflict, so as to improve the durable service life of the switch receiving the pressing.

The invention is not intended to limit the invention, and other equivalent modifications or substitutions that are not departing from the spirit of the invention are intended to be included in the appended claims. Within the scope.

10. . . Pedestal

11. . . Locating slot

111. . . Slot bottom

112. . . notch

113. . . Inner hook

12. . . Torus

121. . . Convex ring

13. . . Hook

20. . . Electrode group

twenty one. . . Positive electrode

twenty two. . . Negative electrode

25. . . Conductive terminal

30. . . Bobbin

31. . . Tube slot

311. . . notch

32. . . Guide slot

33. . . Convex

40. . . Cone sleeve

50. . . Conductive block

60. . . Light-emitting diode

61. . . Positive pin

62. . . Negative pin

70. . . Kit

71. . . Ring rib

711. . . Ring groove

72. . . Ring groove

73. . . Groove

80. . . Button

81. . . Positioning slot

90. . . Ring

91. . . First frame

911. . . Groove

92. . . Second frame

93. . . Port

The first figure is a perspective view of a preferred embodiment of the present invention;

The second figure is a front view of the first figure;

The third figure is the left side view of the second figure;

The fourth figure is a cross-sectional view of A-A of the second figure;

Figure 5 is a cross-sectional view taken along line B-B of the third figure;

The sixth figure is an exploded perspective view of the first figure;

The seventh figure is a bottom perspective view of the first figure;

The eighth figure is a cross-sectional view showing the state of use of one of the fourth figures.

10. . . Pedestal

12. . . Torus

13. . . Hook

25. . . Conductive terminal

62. . . Negative pin

70. . . Kit

71. . . Ring rib

72. . . Ring groove

80. . . Button

90. . . Ring

91. . . First frame

911. . . Groove

92. . . Second frame

93. . . Port

Claims (10)

The conductive structure of the micro switch comprises: a base, the top portion forming a receiving groove; an electrode group disposed at a bottom of the receiving groove, having a plurality of conductive terminals extending to the bottom of the base; a shaft barrel, The bottom end is slidably disposed in the accommodating groove, and is guided by the inner wall of the accommodating groove to approach and disengage the electrode group, and the top end of the shaft barrel is exposed on the top of the pedestal; a tapered sleeve which is expanded from top to bottom , is made of a soft high temperature resistant material, and is disposed in the receiving groove between the shaft barrel and the electrode group; and a conductive block is made of a metal material and is disposed on the top of the tapered sleeve to receive The barrel is driven to compress and release the tapered sleeve, so that the conductive block contacts and disengages from the electrode set, and the electrode set is turned on and off, and the conductive block and the bottom of the tapered sleeve have a donor perception The travel distance of the reciprocating movement of the barrel. The conductive structure of the micro switch according to the first aspect of the invention, wherein the top of the pedestal forms a toroid on the periphery of the accommodating groove, and a sleeve made of a soft refractory material is disposed above the accommodating groove. The sleeve covers the shaft barrel, and the periphery of the sleeve extends to form a ring rib attached to the annular surface to block external liquid from penetrating into the receiving groove. The conductive structure of the micro switch according to claim 2, wherein the kit is capable of transmitting light, and a light-transmitting button is arranged on the top of the kit. The conductive structure of the microswitch according to claim 2, wherein the bottom of the sleeve forms a pair of grooves that should accommodate the grooves, and the top end of the barrel is embedded in the groove. The conductive structure of the micro switch according to claim 2, wherein the bottom of the ring rib forms a ring groove at the periphery of the receiving groove, and a convex ring embedded in the ring groove is formed on the ring surface. The conductive structure of the micro switch according to the second aspect of the invention, wherein the outer peripheral wall of the base forms a symmetrical outer hook portion, and the outer sleeve of the sleeve is sleeved with a ring member, and the ring rib is clamped to the ring member. Between the ring and the ring surface, the ring member extends in the direction of the outer hook portion to form a symmetrical first frame piece, and the first frame piece defines a groove portion that is fastened to the outer hook portion. The conductive structure of the micro switch according to claim 6, wherein the ring member extends toward the base to form two symmetrical second frame pieces, and the base is positioned on the first frame piece and the second frame. Between the frames. The conductive structure of the micro switch according to the first aspect of the invention, wherein the inner wall of the accommodating groove forms two symmetrical inner hook portions, and the outer peripheral wall of the shaft cylinder forms two symmetrical convex portions, respectively receiving the inner hook Stop. The conductive structure of the micro switch according to the first aspect of the invention, wherein a top of the shaft is formed with a cylindrical groove, wherein the cylindrical cavity is provided with a light emitting diode, and the light emitting diode has two extending to the bottom of the base. Pin. The conductive structure of the micro switch according to claim 9, wherein the outer peripheral wall of the barrel forms two guiding grooves that are symmetrical and communicate with the cylindrical groove, and the pins of the light emitting diode respectively pass through the guiding groove Extend to the bottom of the base.