TW201340152A - Power saving actuation switch - Google Patents

Abstract

A power saving actuation switch includes a shell, a pressing element disposed on the shell, an actuation element disposed inside the shell and a linking element arranged between the pressing element and the actuation element. The pressing element comprises a displacement process moving reciprocally inside the shell upon pressed. The linking element comprises a shaft part pivotally disposed on the shell, a force receiving part disposed in the displacement process and corresponding to one end of the shaft rotation part and a force providing part linked to the force receiving part and pivoted based on the shaft part to press the actuation element. The linking element drives the actuation element to switch between the first conductive status and the second conductive status by the principle of leverage. The actuation switch achieves the purpose of high sensitive and low manufacturing costs.

Description

Labor-saving micro switch

The invention relates to a micro switch, in particular to a labor-saving micro switch which uses a lever principle to switch.

The micro switch is widely used in 3C electronic products, household appliances, and automobiles because of its small size and ability to withstand thousands of presses. Briefly, a micro-switching relationship is a control element for turning on or off a circuit, and the structure generally includes a body and a switching component and an operating component disposed in the body, the switching component having a common a terminal, a normally closed terminal, a normally open terminal, and the operating component has a movable member and a button, wherein one end of the movable member is connected to the common terminal, and the up and down displacement of the button can make the other end of the movable member The closed terminal and the normally open terminal are swung to switch between different communication states.

For a conventional micro switch, please refer to the Patent No. 592380 of the Republic of China, which is composed of an upper cover and a base. The micro switch includes a button, a first pin, a second pin and a fixed In the conductive elastic piece of the first pin, the button presses down one end of the conductive elastic piece, and the other end of the conductive elastic piece swings downward to turn on the first pin and the second pin to generate a switching signal. Although the above patent can achieve the function of the switching circuit, the conductive elastic piece only receives the downward pressure and provides the elastic force. Therefore, when the micro switch is used for a long time, the elastic piece is easily broken due to the fatigue of the upper and lower bending, and the circuit or the output signal cannot be switched.

In order to improve the lack of the aforementioned patents, there is a Chinese patent application No. CN202110987, as shown in FIG. 1 , which mainly comprises a casing 1 , a plurality of conductive terminals 2 disposed on the casing 1 , and an elastic member. 3. A conductive elastic piece 4 and a button 5, wherein the conductive elastic piece 4 is provided with a pressure receiving portion 41 pressed by the button 5, a contact portion 42 interposed between the plurality of conductive terminals 2, and the pressure receiving portion 41. Two connecting ribs 43 with the contact portion 42. The elastic member 3 is connected to the conductive elastic piece 4 and the conductive terminal 2, so that the conductive elastic piece 4 is normally supported by the elastic member 3. The elastic member 3 provides the supporting force of the conductive elastic piece 4, so that the conductive elastic piece 4 can be prevented from being broken due to fatigue caused by the upper and lower bending, thereby increasing the life of the conductive elastic piece 4 to increase the number of pressing. Although the prior case solves the problem that the conductive elastic piece is prone to fatigue and breakage, it still has the following disadvantages to be improved.

First, the micro-opening relationship of the previous case utilizes the reciprocation of the contact portion to move between a normal position and a trigger position to achieve the purpose of switching different communication states. Therefore, the conductive elastic piece needs to have at least a length that can respectively connect the button and the conductive terminal. In today's technology industry with extremely low gross profit margin, if the metal materials for conductive shrapnel can be reduced, the production cost will be reduced and the gross profit margin of the product will be increased. Furthermore, during the operation of the micro switch, the button presses the pressure receiving portion to cause the contact portion to swing downward. Since the conductive elastic piece has a certain length, the button must be applied with a sufficient pressing pressure path. The contact portion swings by a sufficient amplitude to reciprocally switch between different communication states. In addition, when the contact portion is in contact with the conductive terminal, a high current is always applied, and the high current generates high heat at the contact surface of the contact portion and the conductive terminal, and the partial contact portion is melted and adhered to the conductive terminal, and the contact is to be made. Switching off the conductive terminals and switching different communication states will require a larger pressure rail, which will result in insufficient sensitivity of the micro switch. Therefore, in order to reduce the production cost and achieve the purpose of switching different connected states with a relatively weak force, the conventional micro switch structure still needs further improvement.

The main object of the present invention is to overcome the lack of sensitivity of the micro switch and to reduce the lack of production cost.

In order to achieve the above object, the present invention provides a labor-saving micro switch including a housing, a pressing member disposed on the housing, and a linking member. The housing has an accommodating space therein, the housing includes a conductive terminal and a common terminal extending from the accommodating space, and an actuating member connected to the common terminal, the actuating member is at the common terminal One side of the common terminal is provided with a pressing portion, and a guiding portion is disposed on the other side of the common terminal, the guiding portion includes a first conductive state connected to the conductive terminal and is not connected to the conductive terminal a second conductive state. The pressing member includes a displacement stroke that is pressed to move between a home position and a pressure position relative to the interior of the housing. The linking member is disposed between the pressing member and the actuating member, and the linking member includes a pivoting portion rotatably pivotally mounted to the housing, a pivoting portion disposed in the displacement stroke and opposite to the end of the pivoting portion a force receiving portion, and a biasing portion that is connected to the force receiving portion and has the shaft rotating portion as a fulcrum, and the force receiving portion is pressed by the pressing member to interlock the pressing portion to press the pressing portion, so that the pressure contact The portion is linked to switch between the first conductive state and the second conductive state.

In an embodiment, the linking member includes a rocking arm that respectively connects the shaft rotating portion, the force receiving portion and the biasing portion.

In one embodiment, the housing includes a positioning shaft disposed in the housing, and the shaft rotating portion is rotatably sleeved on the sleeve of the positioning shaft.

In one embodiment, the housing includes a positioning hole disposed in the housing, and the shaft rotating portion is rotatably pivoted to the rotating shaft of the positioning hole.

In an embodiment, a distance between the force receiving portion and the shaft rotating portion is greater than a distance between the force applying portion and the shaft rotating portion.

In one embodiment, the housing is provided with another conductive terminal under the corresponding conductive terminal in the accommodating space, and the guiding portion is in contact with the other conductive terminal in the second conductive state.

In one embodiment, the pressing member includes a pressing portion and a resilient member that normally supports the pressing portion, and the housing includes a passage for the pressing portion to reciprocate, and the bottom portion of the pressing portion is provided with at least one outer portion. The diameter is greater than the limit of the aperture of the channel.

In one embodiment, the actuating member includes a support portion that is pushed away from the conductive terminal by the common terminal as a fulcrum.

In one embodiment, the housing includes a base body for fixing the common terminal and the conductive terminal, and a cover body covering the base body.

Through the above technical solution, the labor-saving micro switch of the present invention is characterized by the prior art in that:

1. Improve switching sensitivity. In the present invention, a linking member is disposed between the pressing member and the actuating member, and the linking member includes a shaft rotating portion rotatably pivotally mounted to the housing, and is disposed in the displacement stroke and opposite to one end of the shaft rotating portion. a force receiving portion, and a biasing portion that is coupled to the force receiving portion and has the pivot portion as a fulcrum, wherein the pressing portion uses the force receiving portion and the shaft rotating portion as a force applying point and a fulcrum, and the receiving portion The distance between the force portion and the shaft rotating portion is greater than the distance between the biasing portion and the shaft rotating portion, and the force receiving portion is pressed. Therefore, the weak force applied to the force receiving portion is generated by the force applying portion. The effect is that the user only needs to apply a weak force to the pressing portion to switch the micro switch, and from another point of view, the sensitivity of the present invention is improved.
2. Save production costs. The pressing portion of the present invention uses the interlocking member to connect the actuating member, and the pressing portion can achieve the switching effect without contacting the actuating member. Therefore, the actuating member is no longer required to have a length that can respectively connect the pressing portion and the common terminal. In this way, the design of the actuating member can be made lighter, thinner and less, and the metal material can be saved, thereby achieving the purpose of saving production cost.

The detailed description and technical contents of the present invention will now be described as follows:

Referring to FIG. 2 and FIG. 3, FIG. 2 is a schematic structural view and a structural exploded view of an embodiment of the present invention. As shown in the figure, the present invention discloses a labor-saving micro switch, which mainly includes a housing 10 and a housing 20 disposed on the housing 10, the housing 10 includes a body 11 and a cover 12 that covers the base 11. The housing 11 has an accommodation space 111 therein. A common terminal 13 and a conductive terminal 14 are protruded from the accommodating space 111, and another conductive terminal 15 is disposed in the accommodating space 111 corresponding to the conductive terminal 14 in the accommodating space 111. In addition to the above components, an actuating member 16 connected to the common terminal 13 and a linking member 30 disposed between the pressing member 20 and the actuating member 16 are further included. The pressing member 20 includes a pressing portion 21 and a resilient member 22 for supporting the pressing portion 21, and the housing 10 includes a passage 17 for reciprocating movement of the pressing member 20, so that the pressing member 20 has a pressure relative A displacement stroke that moves between the original position and a pressed position inside the housing 10. In order to prevent the pressing member 20 from being detached from the inside of the casing 10, the bottom of the pressing portion 21 is provided with at least one restricting section 211 having an outer diameter larger than the diameter of the passage 17. In this embodiment, the conductive terminal 14 is a normally closed terminal, and the other conductive terminal 15 is a normally open terminal, but is not intended to limit the present invention.

As shown in FIG. 4, a structural view of an embodiment of the present invention is shown. As shown, the housing 10 has a positioning shaft 18 disposed in the housing 10, and the linkage 30 is provided. a shaft rotating portion 31 rotatably pivotally mounted on the positioning shaft 18, a force receiving portion 32 disposed in the displacement stroke and opposite to one end of the shaft rotating portion 31, coupled to the force receiving portion 32 The shaft rotating portion 31 is a urging portion 33 of a fulcrum, and a rocking arm 34 that connects the shaft rotating portion 31, the force receiving portion 32, and the urging portion 33, respectively. Preferably, the urging portion 33 is disposed between the force receiving portion 32 and the shaft rotating portion 31, but is not intended to limit the present invention. Further, in the embodiment, the actuating member 16 is provided with a pressure contact portion 161 on one side of the common terminal 13 and a guiding portion 162 on the other side of the common terminal 13, and the actuating member 16 is further provided. A support portion 163 that normally connects the conductive terminal 14 to the guiding portion 162 with the common terminal 13 as a fulcrum is included. It should be noted that, in the embodiment of the present invention, the housing 10 is provided with a positioning shaft 18, and the shaft rotating portion 31 is rotatably sleeved on the sleeve of the positioning shaft 18. In other alternative embodiments, please refer to FIG. 6 , which is a schematic exploded view of another embodiment of the present invention. As shown, the housing 10 includes a positioning hole disposed in the housing 10 . 18a, the shaft rotating portion 31a is rotatably pivoted to the rotating shaft of the positioning hole 18a. Accordingly, the linking member 30a includes a receiving portion disposed in the displacement stroke and opposite to the end of the shaft rotating portion 31a. a force portion 32a and a biasing portion 33a linked to the force receiving portion 32a and having the shaft rotating portion 31a as a fulcrum, and a rocking arm respectively connecting the shaft rotating portion 31a, the force receiving portion 32a and the biasing portion 33a 34a, and a distance between the force receiving portion 32a and the shaft rotating portion 31a is larger than a distance between the biasing portion 33a and the shaft rotating portion 31a. The configuration of the remaining components is the same as that of the previous embodiment, and therefore will not be described in detail.

Referring to FIG. 4, the pressing portion 21 has a displacement stroke with respect to the inside of the housing 10 to reciprocate between the original position and a pressed position in the passage 17, so that the user can apply pressure. The pressing portion 21 moves the pressing portion 21 downward in the passage 17. When the pressing portion 21 is not forced downward, the elastic member 22 provides an elastic force to push the force receiving portion 32 upward, and the urging portion 33 of the linking member 30 touches the pressing portion 161 of the actuating member 16, at this time, The support portion 163 of the actuator 16 is provided with the elastic force of the common terminal 13 as a fulcrum, and the conductive terminal 14 is normally connected to the conductive terminal 14 to make the common terminal 13 and the conductive terminal 14 conductive to form a first Conductive state. In this embodiment, the conductive element 14 is the normally closed terminal. Therefore, in the first conductive state, the micro switch does not generate a load for switching the signal output to the back end.

Referring to FIG. 5, it is an operation diagram of an embodiment of the present invention. When the pressing portion 21 is moved downward from the original position to the pressed position, the force receiving portion 32 disposed in the displacement stroke is pressed. The pressing portion 21 presses and compresses the elastic member 22, and the urging portion 33 is rotated counterclockwise by the shaft receiving portion 31 as a fulcrum, thereby pressing the pressing portion 161 downward, because the pressing portion The force channel is greater than the upward elastic force provided by the support portion 163. Therefore, the guiding portion 162 is also moved downward with the pressure contact portion 161. At this time, the guiding portion 162 is separated from the conductive terminal 14 to connect the other conductive terminal 15 . The common terminal 13 is electrically connected to the other conductive terminal 15 to form a second conductive state. In this embodiment, the other conductive terminal 15 is the normally open terminal. Therefore, in the second conductive state, the micro switch will generate a load to output the switching signal to the back end.

The actuation mechanism described in the above "Fig. 4" and "Fig. 5" can be understood using the principle of leverage. The force receiving portion 32 and the rocking arm 34 of the linking member 30 are respectively a biasing point and a force arm. The pressing portion 21 presses the force receiving portion 32 with the shaft rotating portion 31 as a fulcrum to generate a linkage force applying portion 33. The torque. Since the distance between the force receiving portion 32 and the shaft rotating portion 31 is larger than the distance between the biasing portion 33 and the shaft rotating portion 31, the force applied to the force receiving portion 32 can be multiplied at the biasing portion 33. Effect. Therefore, the user only needs to apply a weak force to the pressing portion 31 to switch the micro switch of the present invention, that is, the micro switch of the present invention can achieve the effect of labor saving switching by the principle of the lever.

In summary, the labor-saving micro switch of the present invention is provided with a linking member between the actuating member and the pressing member, the linking member includes a shaft rotating portion rotatably pivoted to the housing, and is disposed in the displacement stroke. And a force receiving portion that is opposite to one end of the shaft rotating portion, and a biasing portion that is coupled to the force receiving portion and that rotates with the shaft rotating portion as a fulcrum. With the foregoing structure, the pressing member can use the linking member to drive the guiding portion to switch between a first conductive state and a second conductive state. What is more, the present invention uses the principle of leverage to design a linkage unit that can be labor-savingly switched. Compared with the actuation mechanism of the conventional micro-switch, the invention can achieve the purpose of switching by using weak force. Therefore, the labor-saving micro switch of the present invention is suitable for any electronic device having high sensitivity requirements. In addition, since the pressing member uses the linking member to interlock the actuating member, the actuating member no longer needs to directly contact the pressing member, and can be designed to be lighter, thinner and shorter, so that the purpose of reducing the metal material and reducing the production cost can be achieved. Therefore, the present invention is highly progressive and conforms to the requirements of the invention patent application, and the application is filed according to law, and the praying office grants the patent as soon as possible.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the present application should remain within the scope of the patent of the present invention.

1. . . shell

2. . . Conductive terminal

3. . . Elastic part

4. . . Conductive shrapnel

41. . . Pressure department

42. . . Contact

43. . . Connecting rib

5. . . Button

10. . . case

11. . . Seat

111. . . Housing space

12. . . Cover

13. . . Common terminal

14. . . Conductive terminal

15. . . Another conductive terminal

16. . . Actuator

161. . . Pressure contact

162. . . Guide

163. . . Support

17. . . aisle

18. . . Positioning axis

18a. . . Positioning hole

20. . . Pressing member

twenty one. . . Pressing part

211. . . Restricted section

twenty two. . . Elastic component

30, 30a. . . Linkage

31, 31a. . . Shaft rotation

32, 32a. . . Force department

33, 33a. . . Force department

34, 34a. . . Shake arm

Figure 1, is a front view of the structure configuration of the conventional micro switch

2 is a schematic structural view of an embodiment of the present invention

3 is a schematic exploded view of an embodiment of the present invention;

4 is a front view of a structural configuration of an embodiment of the present invention;

Figure 5 is a schematic view of the operation of an embodiment of the present invention

Figure 6 is a schematic exploded view of another embodiment of the present invention

11. . . Seat

111. . . Housing space

13. . . Common terminal

14. . . Conductive terminal

15. . . Another conductive terminal

16. . . Actuator

161. . . Pressure contact

162. . . Guide

163. . . Support

18. . . Positioning axis

20. . . Pressing member

twenty one. . . Pressing part

211. . . Restricted section

twenty two. . . Elastic component

30. . . Linkage

31. . . Shaft rotation

32. . . Force department

33. . . Force department

34. . . Shake arm

Claims (10)

A labor-saving micro switch includes:
a housing having an accommodating space therein, the housing includes at least one conductive terminal and a common terminal extending from the accommodating space, and an actuating member connected to the common terminal, the actuating member One side of the common terminal is provided with a pressure contact portion, and the other side of the common terminal is provided with a guiding portion, the guiding portion includes a first conductive state that is in contact with the conductive terminal and is not connected to the conductive terminal a second conductive state connected;
a pressing member disposed on the housing, including a displacement stroke that is pressed and reciprocated relative to the interior of the housing to move between an original position and a pressed position; and a linking member disposed on the pressing member and the pressing member Between the actuating members, the linking member includes a shaft rotating portion rotatably pivoted to the housing, a force receiving portion disposed in the displacement stroke and opposite to one end of the shaft rotating portion, and a linkage to the receiving portion a force portion that is biased by the shaft rotating portion, wherein the force receiving portion is pressed by the pressing member to interlock the pressing portion to press the pressing portion, and the pressing portion is linked to the guiding portion at the first portion Switching between the conductive state and the second conductive state. The labor-saving micro switch according to claim 1, wherein the linking member includes a rocking arm that respectively connects the shaft rotating portion, the force receiving portion and the biasing portion. The labor-saving micro switch of claim 1, wherein the housing comprises a positioning shaft disposed in the housing, and the shaft rotating portion is rotatably sleeved on the positioning shaft. The labor-saving micro switch of claim 1, wherein the housing comprises a positioning hole disposed in the housing, and the shaft rotating portion is rotatably pivoted on the rotating shaft of the positioning hole. . The labor-saving micro switch according to claim 1, wherein a distance between the force receiving portion and the shaft rotating portion is greater than a distance between the force applying portion and the shaft rotating portion. The power-saving micro switch according to claim 1, wherein the housing is provided with another conductive terminal under the corresponding conductive terminal in the accommodating space, and the guiding portion is in the second conductive state. The other conductive terminal is connected. The labor-saving micro switch according to claim 1, wherein the pressing member comprises a pressing portion and a resilient member that normally supports the pressing portion. The labor-saving micro switch according to claim 1, wherein the housing includes a passage for the pressing portion to reciprocate, and the bottom of the pressing portion is provided with at least one limiting portion having an outer diameter larger than the diameter of the passage. . The labor-saving micro switch according to the first aspect of the invention, wherein the actuating member comprises a support portion that is connected to the conductive terminal by the common terminal as a fulcrum. The labor-saving micro switch of claim 1, wherein the housing comprises a base body for fixing the common terminal and the conductive terminal, and a cover body covering the base body.