CN209804513U

CN209804513U - micro switch

Info

Publication number: CN209804513U
Application number: CN201920885290.0U
Authority: CN
Inventors: 王彬
Original assignee: Yueqing Haihou Electric Co Ltd
Current assignee: Yueqing Haihou Electric Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2019-12-17
Anticipated expiration: 2029-06-13

Abstract

The utility model discloses a micro-gap switch, including casing and the common port of setting in the casing, the end normally opened, the movable plate, elasticity reed and connection piece, sliding connection has operating button on the casing, operating button one end and connection piece looks butt in the casing, connection piece one end is rotated and is connected on the common port, the elasticity reed left end is rotated and is connected on the common port, the right-hand member of elasticity reed rotates and connects on the movable plate, the one end of common port is worn out the casing and is regarded as first wiring port outward, end normally opened one end is worn out the casing and is regarded as second wiring port outward, the end normally opened is served and is provided with the stationary contact, the one end and the connection piece of movable plate rotate and be connected, the other end and the relative position of stationary contact of movable plate are provided with the movable contact, one side of operating button is provided with the. The utility model discloses following beneficial effect has: the microswitch can continuously apply force to the operating button to complete the conversion of the circuit connection relation.

Description

Micro switch

Technical Field

the utility model relates to a switch, in particular to micro-gap switch.

Background

When the switch is used, important equipment for controlling electrical appliances in daily life or industrial production of people, namely, an electric lamp and a domestic electric appliance which are indispensable in life of people or a large industrial mechanical electric appliance which is important in industrial production, needs to be controlled through the switch.

The microswitch is a quick change-over switch actuated by pressing, and has a small contact interval, a quick action mechanism, a contact mechanism for making switch action by using defined stroke and defined force, a shell cover and a drive rod outside.

Chinese patent No. CN207818438U discloses a reed type microswitch with forced reset. The novel mechanical switch comprises a housing, there is operating button shell front side lateral wall through-hole slidable mounting, be equipped with the COM end in the shell, the end normally open, the drive reset reed, the rotor that extends along left and right directions, first connection piece, wherein be equipped with the stationary contact on the end normally open, rotor left end rotates to be connected and realizes the linkage on first connection piece, the rotor right-hand member is equipped with and is connected and can contact complex movable contact with the stationary contact position, operating button is connected with first connection piece and realizes the linkage, drive reset reed left end is connected on the COM end, drive reset reed right-hand member realizes the linkage with the rotor intermediate junction, shell rear side lateral wall is equipped with the reset button through-hole, the embedding has forced reset button in the reset button through-hole, forced reset button is connected through second connection piece and.

The operating button of the microswitch is pressed by external force and moves towards the inside of the shell to push the moving plate, when the external force is removed, the moving plate is reset under the action of the reed and drives the operating button to reset at once, so that when the microswitch is installed inside various electrical appliances, a control element arranged in the electrical appliances can continuously apply force to the operating button to complete the conversion of circuit connection relationship, the manufacturing difficulty of the electrical appliances is increased, and the application range of the microswitch is limited.

SUMMERY OF THE UTILITY MODEL

the utility model aims at providing a micro-gap switch, this kind of micro-gap switch can be sustainable to the operating button application of force in order to accomplish the conversion of circuit connection relation.

The above technical purpose of the present invention can be achieved by the following technical solutions: a microswitch comprises a shell, a common end, a normally open end, a movable piece, an elastic reed and a connecting piece, wherein the common end, the normally open end, the movable piece, the elastic reed and the connecting piece are arranged in the shell, an operating button is connected to the shell in a sliding mode, one end of the operating button in the shell is abutted to the connecting piece, one end of the connecting piece is connected to the common end in a rotating mode, the left end of the elastic reed is connected to the common end in a rotating mode, the right end of the elastic reed is connected to the movable piece in a rotating mode, one end of the common end penetrates out of the shell to serve as a first wiring port, the other end of the common end is fixed to the inner wall of the front side of the shell, one end of the normally open end penetrates out of the shell to serve as a second wiring port, the other end of the normally open end is fixed to the inner wall of the, one side of the operation button is provided with a heart lock mechanism which can maintain the pressing state of the operation button.

The utility model discloses further set up to: the two sides of the moving piece are provided with baffles for preventing the elastic reeds from shifting when the elastic deformation occurs, and one side of each baffle is abutted against the elastic reeds.

The utility model discloses further set up to: the shell is provided with a pressing mechanism which can permanently press the operating button; when the static contact is communicated with the movable contact, the pressing mechanism can perform pressing operation on the operating button in a propping mode.

The utility model discloses further set up to: the pressing mechanism comprises a lead screw arranged on the shell, one end of the lead screw is rotatably connected with a bearing seat, the bearing seat is fixedly connected onto the shell, the other end of the lead screw is fixedly connected with a hand wheel, one side of the lead screw is in threaded connection with a lead screw nut, one side of the lead screw nut is fixedly connected with a pressing head capable of pressing and contacting an operating button, one side of the bearing seat is provided with a limiting ring plate capable of limiting the rotation of the pressing head, one side of the limiting ring plate is provided with a limiting through groove for the pressing head to penetrate out, and the two sides of the pressing head are abutted to the limiting ring plate.

To sum up, the utility model discloses following beneficial effect has: when the external force is applied, the operating button is pressed towards the inside of the shell, so that one end of the operating button moves towards the inside of the shell, one ends of the connecting piece and the moving piece are driven to move downwards simultaneously, and at the moment, two ends of the elastic spring are respectively connected with the public end and the moving piece in a rotating mode. Under the condition that the public end is immobile, one end of the movable piece deforms under external force to cause the elastic spring piece to be extruded, so that the elastic spring piece presses the movable piece to the normally open end under the action of the elastic potential energy of the elastic spring piece, and the movable contact is in contact with the fixed contact to enable the switch to be switched on. When the force acting on the operating button is removed, the movable piece is sprung to the initial position by the elastic reed, and the switch is turned off. Through setting up the peach heart lock for operating button can be located the position of accomplishing micro-gap switch circuit connection relation conversion when receiving external force and once to press and accomplish when receiving to press once more and reset.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a schematic structural view of FIG. 1 without the housing;

FIG. 3 is a schematic view of the housing of FIG. 1 without the housing in the other direction;

FIG. 4 is a main schematic view of FIG. 2;

FIG. 5 is a schematic view of the operation button in a pressed state;

FIG. 6 is a main schematic view of FIG. 5;

FIG. 7 is a schematic structural view of FIG. 5 with the housing omitted;

FIG. 8 is a schematic structural diagram of a second embodiment of the present invention in a state where the operation button is not pressed;

FIG. 9 is a schematic structural diagram of a second embodiment in a state where an operation button is pressed;

FIG. 10 is a schematic view of the pressing mechanism and the operating button in a mated state;

fig. 11 is an exploded view of the structure of fig. 10.

reference numerals: 1. a housing; 2. a common terminal; 3. a normally open end; 4. a moving plate; 5. an elastic reed; 6. connecting sheets; 7. an operation button; 8. a first wiring port; 9. a second wiring port; 10. a stationary contact; 11. a movable contact; 12. a baffle plate; 13. a pressing mechanism; 14. a screw rod; 15. a bearing seat; 16. a hand wheel; 17. a feed screw nut; 18. a pressing head; 19. a limit ring plate; 20. a limiting through groove; 21. a heart lock mechanism.

Detailed Description

the present invention will be described in further detail with reference to the accompanying drawings.

the present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

the first embodiment is as follows:

as shown in fig. 1 to 7, a microswitch comprises a housing 1, a common end 2, a normally open end 3, a movable piece 4, an elastic spring piece 5 and a connecting piece 6, wherein the common end 2, the normally open end 3, the movable piece 4, the elastic spring piece 5 and the connecting piece 6 are arranged in the housing 1, an operation button 7 is connected on the housing 1 in a sliding manner, and one end of the operation button 7 in the housing 1 is abutted to the connecting piece 6. One end of the connecting sheet 6 is rotatably connected to the public end 2, the left end of the elastic reed 5 is rotatably connected to the public end 2, and the right end of the elastic reed 5 is rotatably connected to the movable sheet 4. One end of the common end 2 penetrates out of the shell 1 to serve as a first wiring port 8, and the other end of the common end 2 is fixed on the inner wall of the front side of the shell 1. One end of the normally open end 3 penetrates out of the shell 1 to serve as a second wiring port 9, the other end of the normally open end 3 is fixed on the inner wall of the rear side of the shell 1, a fixed contact 10 is arranged on the normally open end 3, one end of the movable piece 4 is rotatably connected with the connecting piece 6, a movable contact 11 is arranged at the position, opposite to the fixed contact 10, of the other end of the movable piece 4, and a peach lock mechanism 21 capable of enabling the operating button 7 to maintain a pressing state is arranged on one side of the operating button 7.

When the external force is applied, the operating button 7 is pressed towards the inside of the shell 1, so that one end of the operating button 7 moves towards the inside of the shell 1, the connecting piece 6 and one end of the movable piece 4 are driven to move downwards at the same time, and at the moment, two ends of the elastic spring piece 5 are respectively connected with the public end 2 and the movable piece 4 in a rotating mode. Under the condition that the common end 2 is not moved, one end of the movable piece 4 is deformed by external force, so that the elastic spring piece 5 is extruded, the elastic spring piece 5 presses the movable piece 4 to the normally open end 3 under the action of the elastic potential energy of the elastic spring piece 5, and the movable contact 11 is contacted with the fixed contact 10 to switch on the switch. When the force acting on the operation button 7 is removed, the movable piece 4 is sprung to the initial position by the spring reed 5, and the switch is turned off. Specifically, the following are mentioned: the peach-heart lock mechanism 21 can refer to a microswitch assembly with a self-locking function disclosed in a Chinese patent with the publication number of CN202855597U, and a peach-heart lock with a button switch disclosed in a Chinese patent with the publication number of CN 208738096U. By arranging the heart lock, the operating button 7 can be positioned at the position for completing the conversion of the circuit connection relation of the microswitch when being pressed once by external force and can be reset when being pressed again.

Furthermore, both sides of the moving plate 4 are provided with a baffle 12 for preventing the elastic spring 5 from shifting when elastically deforming, and one side of each baffle 12 abuts against the elastic spring 5. Because the spring type design is adopted in the application, the displacement of the movable plate 4 is changed through the elastic deformation of the elastic spring 5 under the compression condition. Through being provided with baffle 12 in the both sides of rotor 4, can avoid under long-term use, elasticity reed 5 can not take place to shift at the deformation process repeatedly for stability is good and then leads to long service life.

Example two:

The difference from the first embodiment is that: as shown in fig. 8 to 11, the housing 1 is provided with a pressing mechanism 13 which can permanently press the operation button 7; when the stationary contact 10 communicates with the movable contact 11, the pressing mechanism 13 performs an abutting pressing operation on the operation button 7.

Furthermore, the pressing mechanism 13 includes a screw rod 14 disposed on the housing, one end of the screw rod 14 is rotatably connected with a bearing seat 15, the bearing seat 15 is fixedly connected to the housing, and the other end of the screw rod 14 is fixedly connected with a hand wheel 16. A screw nut 17 is connected to one side of the screw 14 through a screw thread, a pressing head 18 which can press and contact the operating button 7 is fixedly connected to one side of the screw nut 17, a limiting ring plate 19 which can limit the pressing head 18 to rotate is arranged on one side of the bearing seat 15, a limiting through groove 20 through which the pressing head 18 can penetrate out is formed in one side of the limiting ring plate 19, and two sides of the pressing head 18 are abutted to the limiting ring plate 19.

the hand wheel 16 is driven by a manual hand to rotate, so that the screw rod 14 can be rotated, and the screw rod 14 can synchronously drive the screw rod nut 17 to rotate. However, since the lead screw nut 17 is fixedly connected to the pressing head 18, both sides of the pressing head 18 are in contact with the limit ring plate 19 and are limited by the limit ring plate 19, so that the pressing head 18 cannot rotate, and further, the lead screw nut 17 is fixedly connected to the pressing head 18 and cannot rotate, and can move only in the axial direction of the lead screw 14. When the pressing head 18 moves to be in contact with the operating button 7, the hand wheel 16 continues to be rotated at the moment, so that the pressing head 18 continues to move downwards and moves the operating button 7 towards the inside of the shell 1, and when the pressing head moves to a certain distance, the moving contact in the shell 1 is in contact with the static contact, so that the switch is switched on. Specifically, the following are mentioned: because the screw nut 17 is in threaded connection with the screw 14, when the hand wheel 16 of the screw nut 17 is not rotated, the screw nut 17 will not change in displacement, and the operation button 7 can be pressed all the time. So that the microswitch is always in the on state. When the switch needs to be switched off, the switch can be switched off only by reversely rotating the hand wheel 16. The movement process is the reverse of the above, and will not be described in detail herein.

Claims

1. A microswitch is characterized in that: comprises a shell (1), a public end (2), a normally open end (3), a movable sheet (4), an elastic reed (5) and a connecting sheet (6) which are arranged in the shell (1), wherein the shell (1) is connected with an operating button (7) in a sliding way, one end of the operating button (7) in the shell (1) is connected with the connecting sheet (6) in a butting way, one end of the connecting sheet (6) is rotatably connected on the public end (2), the left end of the elastic reed (5) is rotatably connected on the public end (2), the right end of the elastic reed (5) is rotatably connected on the movable sheet (4), one end of the public end (2) penetrates out of the shell (1) to serve as a first wiring port (8), the other end of the public end (2) is fixed on the inner wall of the front side of the shell (1), one end of the normally open end (3) penetrates out of the shell (1) to serve as a second wiring port (9, the utility model discloses a shell, including casing (1), normally open end (3), connection piece (6), movable contact (11), one side of operating button (7) is provided with peach heart latch mechanism (21) that can make operating button (7) maintain the state of pressing, normally open end (3) other end is fixed on casing (1) rear side inner wall, be provided with stationary contact (10) on the normally open end (3), the one end and the connection piece (6) of movable contact (4) rotate to be connected, the other end and the relative position of stationary contact (10) of movable contact (4) are provided with movable contact (11), one side.

2. A microswitch as in claim 1 wherein: and two sides of the movable piece (4) are respectively provided with a baffle (12) for preventing the elastic spring (5) from shifting when in elastic deformation, and one side of each baffle (12) is abutted against the elastic spring (5).

3. A microswitch as in claim 2 wherein: the shell (1) is provided with a pressing mechanism (13) which can permanently press the operating button (7); when the static contact (10) is communicated with the movable contact (11), the pressing mechanism (13) can carry out pressing operation on the operation button (7).

4. A microswitch as in claim 3 wherein: the pressing mechanism (13) comprises a lead screw (14) arranged on a shell, one end of the lead screw (14) is rotatably connected with a bearing seat (15), the bearing seat (15) is fixedly connected onto the shell, the other end of the lead screw (14) is fixedly connected with a hand wheel (16), one side of the lead screw (14) is in threaded connection with a lead screw nut (17), one side of the lead screw nut (17) is fixedly connected with a pressing head (18) capable of pressing and contacting an operating button (7), one side of the bearing seat (15) is provided with a limiting ring plate (19) capable of limiting the pressing head (18) to rotate, one side of the limiting ring plate (19) is provided with a limiting through groove (20) capable of allowing the pressing head (18) to penetrate out, and two sides of the pressing head (18) are in butt joint with the limiting ring plate (19).