CN206758329U - A new micro switch with high lifespan - Google Patents

Abstract

The utility model discloses a novel microswitch with long service life, which comprises a base and a cover, wherein the cover covers the base to form a holding cavity, a guide core is arranged in the holding cavity, the novel microswitch also comprises a rebounding mechanism which is arranged in the holding cavity and is positioned below the guide core, a double-foot moving plate which is erected on the base, and a left pin and a right pin which are inserted on the base and are positioned at two outer side edges of the double-foot moving plate; the double-foot moving piece comprises a moving piece pin, a left moving piece and a right moving piece, wherein the left moving piece and the right moving piece are arranged on the moving piece pin; the lower end of the guide core is provided with a left pushing foot and a right pushing foot, and the lower part of the left pushing foot is provided with a pushing salient point. The utility model discloses a control both feet moving plate bounce open and fold, for side contact and separation between contact on the both feet moving plate and the pin, realize switching on and the disconnection function, reducing wear improves the life-span.

Description

A new micro switch with high lifespan

technical field

The utility model relates to a micro switch, in particular to a novel micro switch with high service life.

Background technique

Micro switch is a commonly used switch mechanism. It is a contact mechanism with a small contact interval and a quick action mechanism that performs switching actions with a specified stroke and a specified force. It is widely used in industry, electronics, machinery, and governance. Gold, electricity and other fields.

The working principle of the existing micro switch is: the external mechanical force acts on the action reed through the transmission element (press pin, button, lever, roller, etc.), and when the action reed moves to the critical point, an instantaneous action is generated to make the action The moving contact at the end of the reed is quickly connected or disconnected from the static contact.

The existing micro switch usually adopts the method of setting the movable contact on the action reed. Before and after the action reed is pressed, the movable contact is respectively in contact with the static contact above or below the action reed. , to achieve the function of on or off. With this vertical frontal touch method, since the micro switch is often applied with a large pressing force, the corresponding action reed has a large elastic recovery force, so the moving contact exerts an excessive force on the static contact. The positive force between the two is positive, and the impact force is too large, the contact surface of the two is easy to wear, and it will cause oxidation and vulcanization, and the electrical performance will have bad phenomena. There are many specific reasons for this bad phenomenon. When it is turned on, there will be double-click phenomenon, the resistance will become larger, the response will be slow, etc., and the lifespan will be significantly reduced. The general lifespan is only 10 million times.

Utility model content

In view of the above deficiencies, the purpose of this utility model is to provide a new type of high-life micro switch, by controlling the opening and closing of the two-legged movable piece, to realize the side contact and separation between the contact and the pin on the double-footed movable piece , so as to realize the conduction and disconnection function of the micro switch, the contact and the pin only rub against each other, and the force direction between the two becomes the side force, which reduces the possibility of mutual wear and greatly improves the service life. And the service life is increased to 80 million times.

The technical scheme that the utility model adopts for achieving the above object is:

A new type of high-life micro switch, including a base and a cover with an upper opening. The cover is closed on the base to form a storage cavity. A guide core is arranged in the storage cavity, and the upper end of the guide core moves up and down. In the upper opening of the cover, it is characterized in that it also includes a rebound mechanism arranged in the accommodating cavity and below the guide core, a double-leg movable piece arranged in the accommodating cavity and erected on the base, inserted in the The left pin on the base and on the left outer side of the two-foot moving piece, and the right pin inserted on the base and on the right side of the two-foot moving piece; wherein, the two-foot moving piece includes a plug The pins of the moving piece arranged in the base, and the left moving piece and the right moving piece arranged on the pins of the moving piece and arranged oppositely, the lower side of the end of the left moving piece is bent outward to form a relief portion, A left contact is arranged on the outer side of the left moving piece and on the side of the left pin. A right contact point is arranged on the side of the right pin; the lower end of the guide core has a left push pin and a right push pin, and the outer side of the lower part of the left push pin has a push bump, and the left push pin is located in the end of the left moving piece On the side, the right push pin is located on the upper side of the end of the right moving piece.

As a further improvement of the utility model, the rebound mechanism includes a movable piece erected on the base, and a tension spring arranged on the movable piece, wherein, the rear end of the movable piece is bent downward to form a hole for the tension spring to embed. The movable piece gives way, and one end of the extension spring is connected to the movable piece, and the other end is connected to the base.

As a further improvement of the utility model, a fixed piece is provided at the rear end of the base, a rear hook hole is opened on the fixed piece, a front hook hole is opened at the front end of the movable piece, and the front end of the extension spring is hooked on the On the front hook hole, the rear end is hooked on the rear hook hole; a limiting slot for inserting the rear end of the movable piece is arranged at the rear end of the base, and the fixed piece is inserted into the rear end surface of the limiting slot.

As a further improvement of the present utility model, a limit block is provided at the front end of the base, and the limit block includes a vertical insertion block fixedly inserted into the base, set on the upper end of the vertical insertion block and bent inward The horizontal limit block, the horizontal insertion block arranged at the lower end of the vertical insertion block and bent inward, the lower limit protrusion arranged at the end of the horizontal insertion block and bent upward, and the end of the horizontal insertion block connected to and The outer insertion block extending outward, wherein the horizontal limiting block is located directly above the front end of the movable piece, the lower limit projection is located directly below the front end of the movable piece, and the outer insertion block is inserted into the front end of the base.

As a further improvement of the utility model, the movable piece includes a front horizontal movable part, a rear horizontal movable part parallel to the front horizontal movable part, and an inclined movable part connected between the rear end of the front horizontal movable part and the front end of the rear horizontal movable part. part, wherein, the moving part is formed by matching the inclined movable part with the rear horizontal movable part.

As a further improvement of the utility model, the rebound mechanism is an elastic body.

As a further improvement of the utility model, the lower side of the end of the left moving piece is provided with a lower bar-shaped opening downwards, so that a lower relief block is formed on the lower side of the end of the left moving piece. The outer side is bent and formed; the upper side of the end of the right moving piece is upwardly provided with an upper bar-shaped opening, so that an upper relief block is formed on the upper side of the end of the right moving piece, and the upper relief is formed by the upper relief block Formed by bending inwards.

As a further improvement of the utility model, the rear ends of the left moving piece and the right moving piece are connected to the upper end of the moving piece pin through a connecting block, the upper end of the connecting block has a U-shaped opening, and the lower end has a pin connected to the moving piece lead. The connecting part of the foot; the rear ends of the left moving piece and the right moving piece are respectively bent inwardly to form a bending part connected to the side of the connecting block.

As a further improvement of the present utility model, the guide core includes an upper pressing part and a lower pressing part arranged at the lower end of the upper pressing part and embedded in the accommodating cavity, wherein the left pushing foot is arranged at the lower left end of the upper pressing part And it is located on the left side of the lower pressing part, and the right pushing foot is set at the lower right end of the upper pressing part and is located on the right side of the lower pressing part; both the upper pressing part and the lower pressing part are semi-cylindrical, and the lower pressing part The width of the portion is greater than the width of the upper pressing portion.

As a further improvement of the present utility model, the two outer sides of the base respectively have a side slot, and a locking protrusion is arranged on the side slot; the two outer sides of the lower end of the cover are respectively provided with a The inserting part of the side slot is inserted, and the inserting part is provided with a bayonet opening for the card position protrusion to snap into.

The beneficial effects of the utility model are:

(1) By increasing the moving pieces of both feet and improving the structure of the guide core, the conduction pins are separately arranged on both sides of the moving piece of both feet, and the opening and closing of the moving pieces of both feet are controlled by the guide core , to achieve side contact and separation between the contacts and pins on the two-legged moving piece, so as to realize the conduction and disconnection function of the micro switch. The contacts and pins only rub against each other, and the influence between the two The direction of the force is changed to the side force, which reduces the possibility of mutual wear and greatly improves the life span, and the life span is increased to 80 million times;

(2) By cooperating with the movable piece of the rebound mechanism and the tension spring, the movable piece is bent directly downward to provide a space for the compression and rebound of the tension spring. In the size of the micro switch In the case of a certain size, side space is provided for the installation and setting of the two-foot moving piece, and the structural design is more reasonable and compact;

(3) The extension spring structure is adopted to increase the length of the arm of the movable piece, and the adjustment space of the extension spring is larger, so as to realize a variety of different handles and sounds.

The above is an overview of the technical solution of the utility model, and the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the explosion diagram of the utility model;

Fig. 2 is a schematic diagram of the overall external structure of the utility model;

Fig. 3 is a part of structural representation of the utility model;

Fig. 4 is the structural representation of another part of the utility model;

Fig. 5 is a schematic structural view of the utility model's two-leg moving piece;

Fig. 6 is the structural representation of guide core of the present utility model;

Fig. 7 is a schematic structural view of the movable sheet of the present invention;

Fig. 8 is a structural schematic diagram of the limiting block of the present invention.

detailed description

In order to further explain the technical means and effects of the utility model to achieve the predetermined purpose, the specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Please refer to Fig. 1 to Fig. 8, the embodiment of the utility model provides a new micro switch with high life span, including a base 1, and a cover 2 with an upper opening 21, the cover 2 is closed on the base 1 to form a container Place the cavity, the accommodating cavity is provided with a guide core 3, the upper end of the guide core 3 moves up and down in the upper opening 21 of the cover 2. The new high-life micro switch of this embodiment also includes a rebound mechanism 4 arranged in the accommodating cavity and below the guide core 3, a double-leg movable piece 5 arranged in the accommodating cavity and erected on the base 1, and a plug-in mechanism. The left pin 6 which is arranged on the base 1 and is located on the left outer side of the double-leg movable piece 5, and the right pin 7 which is inserted on the base 1 and is located on the right outer side of the double-foot movable piece 5; wherein, The two-leg moving piece 5 includes a moving piece pin 51 inserted in the base 1, and a left moving piece 52 and a right moving piece 53 arranged on the moving piece pin 51 and oppositely arranged, the left moving piece 52 The lower side of the end part is bent outward to form a relief part 521. A left contact 522 is arranged on the outer side of the left moving piece 52 and on the side of the left pin 6. The upper side of the end of the right moving piece 53 Bend inwardly to form an upper relief portion 531, and a right contact 532 is arranged on the outer side of the right moving piece 53 and on the side of the right pin 7; the lower end of the guide core 3 has a left push foot 31 and A right push pin 32, the outer side of the left push pin 31 has a push convex point 311, the left push pin 31 is located at the inner side of the end of the left moving piece 52, and the right push pin 32 is positioned at the end of the right moving piece 53 side. Through the left push pin 31 and the right push pin 32 at the lower end of the guide core 3, the pop-up and closing of the moving pieces 5 of both feet are controlled, so as to realize the side contact between the moving pieces 5 of both feet and the left pin 6 or the right pin 7 respectively. Separation, so as to realize the on and off function of the micro switch.

In the present utility model, the rebound mechanism 4 provides elastic restoring force for the guide core 3, and it only needs to have a rebound effect. Formed together. In this embodiment, the rebound mechanism 4 includes a movable piece 41 mounted on the base 1, and a tension spring 42 arranged on the movable piece 41, wherein the rear end of the movable piece 41 is bent downward to form a The movable piece gives way to the extension spring 42 , and one end of the extension spring 42 is connected to the movable piece 41 , and the other end is connected to the base 1 .

As shown in Figure 1, Figure 3 and Figure 4, a fixed piece 8 is provided at the rear end of the base 1, a rear hook hole 81 is provided on the fixed piece 8, and a front hook hole is provided at the front end of the movable piece 41. 412, the front end of the extension spring 42 is hooked on the front hook hole 412, and the rear end is hooked on the rear hook hole 81; a limit for inserting the rear end of the movable piece 41 is provided at the rear end of the base 1 The slot 11, the fixing piece 8 is inserted into the rear end surface of the limiting slot 11.

As shown in FIG. 8 , a limit block 9 is provided at the front end of the base 1 . The horizontal limit block 92 bent inside, the horizontal insert block 93 arranged at the lower end of the vertical insertion block 91 and bent inward, the lower limit protrusion 94 arranged at the end of the horizontal insert block 93 and bent upward, And the outer insertion block 95 that is connected to the end of the horizontal insertion block 93 and extends outward, wherein the horizontal limit block 92 is located directly above the front end of the movable piece 41, and the lower limit projection 94 is located directly below the front end of the movable piece 41. The outer insertion block 95 is inserted into the front end of the base 1 .

As shown in Figure 7, the movable piece 41 includes a front horizontal movable part 413, a rear horizontal movable part 414 parallel to the front horizontal movable part 413, and a front end connected to the rear horizontal movable part 413 and the rear horizontal movable part 414. There is an inclined movable part 415 between them, wherein, the movable sheet relief part 411 is formed by matching the inclined movable part 415 with the rear horizontal movable part 414 .

As shown in FIG. 5 , the lower side of the end of the left moving piece 52 is provided with a lower bar-shaped opening 523 downward, so that a lower relief block 524 is formed on the lower side of the end of the left moving piece 52 , and the lower relief portion 521 is formed by The lower relief block 524 is formed by bending outward; the upper side of the end of the right moving piece 53 is upwardly provided with an upper strip-shaped opening 533, so that an upper relief block 534 is formed on the upper side of the end of the right moving piece 53 , the upper relief portion 531 is formed by bending the upper relief block 534 inwardly.

At the same time, the rear ends of the left moving piece 52 and the right moving piece 53 are connected to the upper end of the moving piece pin 51 through a connecting block 54. The upper end of the connecting block 54 has a U-shaped opening 541, and the lower end has a U-shaped opening 541 connected to the moving piece pin. The connecting portion 542 of the leg 51 ; the rear ends of the left moving piece 52 and the right moving piece 53 are respectively bent inwardly to form a bending portion ( 525 , 535 ) connected to the side of the connecting block 54 .

As shown in FIG. 6 , the guide core 3 includes an upper pressing portion 33 and a lower pressing portion 34 disposed at the lower end of the upper pressing portion 33 and embedded in the accommodating cavity, wherein the left pushing foot 31 is disposed on the upper pressing portion 33 . The lower left end of the upper pressing portion 33 is located on the left side of the lower pressing portion 34, and the right push foot 32 is arranged on the lower right end of the upper pressing portion 33 and is located on the right side of the lower pressing portion 34; the upper pressing portion 33 and the lower pressing portion 34 are both It is in the shape of a semi-cylindrical body, and the width of the lower pressing portion 34 is greater than that of the upper pressing portion 33 .

As shown in Figure 2 and Figure 4, the two outer sides of the base 1 have one side slot 12 respectively, and a locking protrusion 121 is arranged on the side slot 12; the two outer sides of the lower end of the cover 2 Inserting portions 22 for inserting into the side slots 12 are arranged downwards on the sides respectively, and the inserting portions 22 are provided with bayonet openings 221 for engaging the locking protrusions 121 .

The micro switch provided by the embodiment of the utility model is suitable for fields such as industry, electronics, machinery, metallurgy, electric power, etc., and is especially suitable for various electric appliances and various automobile center consoles.

The working principle of the utility model is:

When the micro switch is in the natural state, the push bump 311 of the left push pin 31 of the guide core 3 is located at the inner side of the left moving piece 52, and pushes outward to bounce the left moving piece 52, so that the left touch on the left moving piece 52 The point 522 is in contact with the left pin 6; at the same time, the right push pin 32 of the guide core 3 is located in the upper relief part 531 of the right moving piece 53, and the right push pin 32 of the guide core 3 is not aligned with the right moving piece. 53 exerts active force, and the right moving plate 53 is in a natural state, and the right pushing pin 32 of the guide core 3 is separated from the left pin 7 and disconnected.

When the guide core 3 is pressed down, the guide core 3 exerts a downward force on the extension spring 42 of the rebound mechanism 4, and the left push foot 31 of the guide core 3 moves down, so that the push bump 311 of the left push foot 31 enters In the lower abdication block 524 of the left moving piece 52, the left moving piece 52 rebounds, and the left contact 522 on the left moving piece 52 is separated from the left pin 6; at the same time, the right push of the guide core 3 The pin 32 moves down, so that the right pushing pin 32 moves to the inner side of the right moving piece 53, and applies an outward force to the right moving piece 53, and the right moving piece 53 bounces outward, and the right side of the right moving piece 53 touches The point 532 is in contact with the left pin 7 and conducts. When the pressing on the guide core 3 is released, the micro switch returns to the natural state due to the rebound effect of the rebound mechanism 4 .

The key point of the present utility model mainly lies in,

(1) By increasing the moving pieces of both feet and improving the structure of the guide core, the conduction pins are separately arranged on both sides of the moving piece of both feet, and the opening and closing of the moving pieces of both feet are controlled by the guide core , to achieve side contact and separation between the contacts and pins on the two-legged moving piece, so as to realize the conduction and disconnection function of the micro switch. The contacts and pins only rub against each other, and the influence between the two The direction of the force is changed to the side force, which reduces the possibility of mutual wear and greatly improves the life span, and the life span is increased to 80 million times;

(2) By cooperating with the movable piece of the rebound mechanism and the tension spring, the movable piece is bent directly downward to provide a space for the compression and rebound of the tension spring. In the size of the micro switch In the case of a certain size, side space is provided for the installation and setting of the two-foot moving piece, and the structural design is more reasonable and compact;

(3) The extension spring structure is adopted to increase the length of the arm of the movable piece, and the adjustment space of the extension spring is larger, so as to realize a variety of different handles and sounds.

The above are only preferred embodiments of the present utility model, and are not intended to limit the technical scope of the present utility model. Therefore, other structures obtained by adopting the same or similar technical characteristics as the above-mentioned embodiments of the present utility model can be obtained. Within the protection scope of the present utility model.

Claims (10)

1. A new type of high-life micro switch, including a base and a cover with an upper opening. The cover is closed on the base to form a housing cavity. A guide core is arranged in the housing cavity. The upper end of the guide core is It moves up and down in the upper opening of the cover, and it is characterized in that it also includes a rebound mechanism arranged in the accommodating cavity and below the guide core, a double-leg movable piece arranged in the accommodating cavity and erected on the base, and a plug-in mechanism. The left pin which is arranged on the base and is located on the left outer side of the double-footed moving piece, and the right pin which is inserted on the base and is located on the right side of the double-footed moving piece; wherein, the double-footed moving piece It includes the pins of the moving piece inserted in the base, and the left moving piece and the right moving piece that are arranged on the moving piece pins and are oppositely arranged. The lower side of the end of the left moving piece is bent outward to form a relief portion , a left contact is provided on the outer side of the left moving piece and on the side of the left pin, the upper side of the end of the right moving piece is bent inward to form an upper relief portion, and the outer side of the right moving piece And a right contact is arranged on the side of the right pin; the lower end of the guide core has a left push pin and a right push pin, and the outer side of the left push pin has a push bump, and the left push pin is located on the left The inner side of the end of the sheet, the right push pin is located on the upper side of the end of the right moving sheet. 2. The new high-life micro switch according to claim 1, characterized in that, the rebound mechanism includes a movable piece erected on the base and a tension spring arranged on the movable piece, wherein the movable piece The rear end is bent downward to form a moving piece relief part for the tension spring to be embedded in, and one end of the tension spring is connected to the movable piece, and the other end is connected to the base. 3. The new high-life micro switch according to claim 2, characterized in that, a fixed piece is provided at the rear end of the base, a rear hook hole is opened on the fixed piece, and a front hook hole is opened at the front end of the movable piece. Hook hole, the front end of the extension spring is hooked on the front hook hole, and the rear end is hooked on the rear hook hole; a limit slot for inserting the rear end of the movable piece is provided at the rear end of the base, and the fixed The sheet is inserted into the rear end face of the limiting slot. 4. The novel high-life micro switch according to claim 2, characterized in that a limit block is arranged at the front end of the base, and the limit block includes a vertical insertion block fixedly inserted in the base, a set A horizontal limit block at the upper end of the vertical insertion block and bent inward, a horizontal insertion block at the lower end of the vertical insertion block and bent inward, a lower limit block at the end of the horizontal insertion block and bent upward The projection block and the outer insertion block connected to the end of the horizontal insertion block and extending outward, wherein the horizontal limit block is located directly above the front end of the movable sheet, the lower limit projection is located directly below the front end of the movable sheet, and the outer insertion block Inserts into the front of the base. 5. The high-life novel microswitch according to claim 2, wherein the movable piece comprises a front horizontal movable part, a rear horizontal movable part parallel to the front horizontal movable part, and a rear horizontal movable part connected to the front horizontal movable part. The inclined movable part between the end and the front end of the rear horizontal movable part, wherein, the moving piece relief part is formed by matching the inclined movable part and the rear horizontal movable part. 6. The novel high-life micro switch according to claim 1, wherein the rebound mechanism is an elastic body. 7. The new micro switch with high lifespan according to claim 1, characterized in that, the lower side of the end of the left moving piece is downwardly provided with a strip-shaped opening, so that a step-off block is formed on the lower side of the end of the left moving piece, The lower relief part is formed by bending the lower relief block outward; the upper side of the end of the right moving piece is provided with an upper strip-shaped opening upward, so that an upper relief block is formed on the upper side of the end of the right moving piece , the upper relief part is formed by bending the upper relief block inwardly. 8. The new type micro switch with long service life according to claim 1, characterized in that, the rear ends of the left moving piece and the right moving piece are connected to the upper end of the moving piece pin through a connecting block, and the upper end of the connecting block has A U-shaped opening, the lower end of which has a connecting portion connected to the pin of the moving piece; the rear ends of the left moving piece and the right moving piece are respectively bent inward to form a bending portion connected to the side of the connecting block. 9. The new type micro switch with long service life according to claim 1, characterized in that, the guide core includes an upper pressing part, and a lower pressing part arranged at the lower end of the upper pressing part and embedded in the accommodating cavity, wherein, The left pushing foot is arranged at the lower left end of the upper pressing part and is located on the left side of the lower pressing part, and the right pushing foot is arranged at the lower right end of the upper pressing part and is located at the right side of the lower pressing part; Both parts are in the shape of a semi-cylindrical body, and the width of the lower pressing part is greater than that of the upper pressing part. 10. The new high-life micro switch according to claim 1, characterized in that, the two outer sides of the base respectively have a side slot, and a locking protrusion is arranged on the side slot; The two outer sides of the lower end of the cover are respectively downwardly provided with inserting parts for inserting into the side slots, and the inserting parts are provided with bayonet openings for the locking protrusions to be snapped in.