KR200208883Y1 - Selector switch - Google Patents

Abstract

The selection switch has a switch housing 20 and a button cap 30 having two opposing side portions 31, 32. The contact assembly has a first conductive member 22, a second conductive member 23 and a third conductive member 24 all secured within the switch housing 20. The helical spring 42 is mounted in the switch housing 20 and has an outer end 421 supporting the button cap 30 thereon and an inner end 422 adjacent to the contact assembly. The flexible mandrel 41 has an inner end 412 and an outer end 411 integrally formed with the outer end 421 of the helical spring 42. The helical spring 42 extends around the flexible mandrel 41. The movable contact member 50 is in electrical contact with the inner end of the flexible mandrel 41 and supported thereon to move between the first and second positions, in which the contact member 50 is moved. The subsidence of one of the side portions 31, 32 of the button cap 30 is in electrical contact with the first and second conductive members 22, 23, and in the second position the contact member 50 is in the button cap 30. Electrical contact with the second and third conductive members 23, 24 by settlement of the other of the side portions 31, 32 of the < RTI ID = 0.0 >

Description

Selector switch

The present invention relates to a selector switch, and more particularly to a selector switch having a single spring member for quickly converting two different connection states.

Selection switches are typically used in electrical appliances to control the operation of these electrical appliances in two different operating states. Referring to FIG. 1, a conventional selector switch has a button cap 10, which is mounted on a switch housing and has an annular flange forming an accommodation space 16. The rigid rod 11 is received in this receiving space 16 and extends downward to engage the contact plate 12. The contact plate 12 is driven by the rod 11 to move between the first position and the second position, in which the contact plate 12 is first moved by subsidence of one side of the button cap 10. In contact with the conductive member 13 and the second conductive member 14, in the second position the contact plate 12 is caused by the settlement of the other side of the button cap 10 by the first conductive member 13 and the third conductive member. In contact with the member 15. The spring 17 tightly surrounds the rigid rod 11 and is inclined to contact the contact plate 12 with a suitable one of the conductive members 13, 14, 15. The drawbacks of the conventional selector switch are as follows.

1. Since the rigid rod 11 is used to move the contact plate 12, an external force must be exerted on the button cap 10 when the switch is in the switched state. Moreover, the switching action is relatively slow.

2. A gap is formed between the contact plate 14 and the conductive members 14 and 15 while the contact plate 12 is moved between the first position and the second position, so that the selector switch can be burned and destroyed. An arc is created.

3. The size of the selector switch cannot be reduced by the existence of the rigid rod 11.

The main object of the present invention is to provide a selector switch having a single spring member suitable for manipulating the movable contact member to contact an appropriate conductive member when it is switched between two different connection states.

According to the present invention, the selector switch has a switch housing and a button cap having two opposing side parts. The contact assembly has a first conductive member, a second conductive member and a third conductive member all fixed within the switch housing. The single spring member has a helical spring and a flexible mandrel. The helical spring is mounted in the switch housing and has an outer end supporting the button cap thereon and an inner end adjacent the contact assembly. The flexible mandrel has an inner end and an outer end integrally formed at the outer end of the helical spring. The helical spring extends around the flexible mandrel. The movable contact member is in electrical contact with and supported thereon on the inner end of the flexible mandrel, moving between a first position and a second position, wherein the contact member is positioned at one of the side portions of the button cap. The first conductive member and the second conductive member are in electrical contact by settlement, and in the second position the contact member is in electrical contact with the second conductive member and the third conductive member by settlement of the other of the side portions of the button cap. do. As such, the flexible mandrel can move quickly to transition between the first and second switching states. The operation of the button cap is less stiff by the single spring member.

1 is a cross-sectional view of a conventional selector switch,

2 is a cross-sectional view showing a preferred embodiment of the selection switch of the present invention in a first state,

3 is a perspective view showing the spring member of the embodiment of FIG. 2 in a steady state;

4 is a side view showing the spring of FIG. 3 in a compressed state;

5 is an exploded view of a portion of the selector switch of FIG. 2;

6 is a sectional view showing a select switch in a second state;

Explanation of symbols for main parts of the drawings

20: switch housing 30: button cap

31, 32: side part 40: flexible mandrel

42: spiral spring 50: movable contact member

201: upper end 202: lower end

Other features and advantages of the present invention will become apparent from the following detailed description of preferred embodiments of the invention, with reference to the accompanying drawings.

2, a preferred embodiment of the selector switch according to the present invention includes a switch housing 20, a button cap 30, a single spring member 40 and a movable contact member 50.

The switch housing 20 has a cavity 21, an upper end 201 and a lower end 202. The contact assembly has a first conductive member 22, a second conductive member 23 and a third conductive member 24, all of which are fixed in the switch housing 20 at the lower end 202, and the switch housing ( 20) to the outside. As shown in FIG. 5, the second conductive member 23 has a cavity, which has a wide portion 230 and a narrow portion 231 connecting with the wide portion 230.

The button cap 30 is mounted to the switch housing 20 at the upper end 201 and has two opposing side portions 31, which are generally located above the first conductive member 22 and the third conductive member 24, respectively. 32). The button cap 30 has an inner surface 36 formed in the annular flange 33 between the side portions 31, 32. The annular flange 33 extends downward to define an elongated receiving space 34 therein. The receiving space 34 has a first end adjacent the inner surface 36 and a second end opposite the first end. The receiving space 34 has an annular cross section of which diameter increases from the first end to the second end.

Referring to FIG. 3, a single spring member 40 is mounted in the cavity 21 of the switch housing 20 and has a helical spring 42 and a flexible mandrel 41. The helical spring 42 has an outer end received in the receiving space 34 of the button cap 30 and an inner end 422 adjacent to the contact assembly. The flexible mandrel 41 is generally L-shaped and has a straight body with an outer end 411. This outer end is integrally formed with the outer end 421 and the inner end 412 of the helical spring 42. The inner end 412 is generally straight and has a bend 410 orthogonal to the straight body.

Referring to FIG. 5, the movable contact member 50 is an elongated plate having through holes 51 formed therethrough. The bend 410 of the flexible mandrel 41 extends through the through hole 51 such that the movable contact member 50 is secured between the helical spring 42 and the inner end 412 of the flexible mandrel 41. As a result, the spring member 40 is retained on the movable contact member 50. In addition, the contact member 50 is slidably mounted in the wide portion 230 of the cavity of the second conductive member 23.

FIG. 2 shows the selector switch in the first connected state, wherein when the side portion 31 of the button cap 30 is settled, the two ends 500, 501 of the contact member 50 are respectively connected to a third conductive member ( 24) and the second conductive member 23. When the other side portion 32 is settled, the button cap 30 acts as a lever having a point on the annular flange 33. As shown in FIG. 4, the helical spring 42 and the mandrel 41 are bent and accumulate elastic force to enable rapid movement of the helical spring 42 and the mandrel 41 toward the side portion 31 to make contact. The member 50 is operated to slide in the same direction. As shown in FIG. 6, the bent portion 410 of the mandrel 41 passes through the narrow portion 231, and the end 501 of the contact member 50 contacts the first conductive member 22 to switch. Will operate in the second connected state.

Advantages of the selector switch of the present invention are as follows.

1. The mandrel 41 moves to quickly switch between the first and second switching states, thereby avoiding the risk of forming a play between the conductive members 22 and 24 and the contact member 50 and the generation of electrical arcs. Minimized to prevent breakage of the switch.

2. The single spring member 40 makes it less stiff when acting on the button cap 30.

3. Since the helical spring 42 of the spring member 40 can be formed with a different diameter, the size of the selector switch can be reduced to suit the intended application.

While the present invention is described in connection with the most practical and preferred embodiments, the present invention is not limited to the disclosed embodiments but is intended to cover various modifications and equivalent arrangements included within the spirit and perspective of the broad description.

The selector switch of the present invention moves quickly between the first switching state and the second switching state, thereby minimizing the risk of forming a gap between the conductive member and the contact member and the occurrence of an electric arc, thereby preventing breakage of the switch, and The action of the button cap is smoothed by the spring member, and the size of the selection switch can be reduced to suit the intended application since the helical spring of the spring member can be formed with different diameters.

Claims (5)

In the selector switch: (1) a switch housing (20) having a cavity (21); (2) a button cap (30) having two opposing side portions (31, 32); A contact assembly having a first conductive member 22, a second conductive member 23, and a third conductive member 24, all fixed within the switch housing 20; ④ as a single spring member 40, An outer end 421 mounted thereon and supporting the button cap 30 thereon at a position disposed between the opposing side portions 31, 32, and an inner end adjacent to the contact assembly ( A helical spring 42 having 422; An inner end 412 and an outer end 411 integrally formed with the outer end 421 of the helical spring 42, wherein the helical spring 42 has a perimeter around the flexible mandrel 41. A single spring member (40) having a flexible mandrel (41) extending therethrough; ⑤ the movable contact member 50, which is electrically contacted and supported on the inner end 412 of the flexible mandrel 41, thereby moving between a first position and a second position, wherein the contact at the first position. The member 50 is in electrical contact with the first conductive member 22 and the second conductive member 23 by settlement of one of the side portions 31, 32 of the button cap 30, and the second In position the contact member 50 is in electrical contact with the second conductive member 23 and the third conductive member 24 by settlement of the other of the side portions 31, 32 of the button cap 30. And a selection switch comprising the movable contact member. The method of claim 1, The movable contact member 50 has a through hole 51 formed therethrough, and the flexible mandrel 41 is generally L-shaped and extends through the through hole 51 of the movable contact member 50. And the inner end 412 of the flexible mandrel 41 is generally straight and orthogonal to the straight body, such that the movable contact member 50 is connected with the helical spring 42 and the flexible body. A selector switch for retaining the spring member (40) on the movable contact member (50) by securing between the inner ends (412) of the mandrel (41). The method of claim 2, The second conductive member 23 has a cavity having a wide portion 230 and a narrow portion 231 in communication with the wide portion 230, the movable contact member 50 having the cavity of the cavity. Slidably mounted in the wide portion 230, the inner end 412 of the flexible mandrel 41 is moved between the cavity of the cavity when the movable contact member 50 moves between the first and second positions. Selector switch sized and positioned to pass through narrow portion 231. The method of claim 1, The button cap 30 has an inner surface 36 formed in the annular flange 33, the annular flange extending inwardly to define an elongated receiving space 34 therein, the article adjacent to the inner surface. And a second end opposite the first end, wherein the outer end (421) of the helical spring (42) is received within the receiving space (34). The method of claim 4, wherein The receiving space 34 has a circular cross section with a diameter increasing from the first end to the second end, whereby when the button cap 30 is settled on either of the side portions 31, 32, the spiral Selector switch wherein the outer end (422) of a spring (42) can be compressed inside the annular flange (33).