CN217134246U - Micro switch - Google Patents

Abstract

The utility model relates to a micro-gap switch, including casing, the first terminal and the second terminal of setting in the casing, the elasticity that switches on first terminal and second terminal switches on the piece, orders about the button that elasticity switched on the piece and actuates, elasticity switches on the piece include with first terminal swing joint's swing piece, with swing piece swing joint's switch plate and order about the shell fragment that the switch plate resets, the shell fragment has elasticity, the button orders about the swing piece and rotates for first terminal, the shell fragment is in bending state, under the initial condition, the bending angle of shell fragment is at 3-20. The utility model provides a micro-gap switch, the bend angle control of shell fragment is at 3-20, and the shell fragment of the arc form that adopts radian smooth transition drives the switching piece and actuates to realize switching on and breaking off of circuit, have that part mould preparation is convenient, with low costs, the part shaping is simple, easy equipment, the switch stroke is big, the shell fragment bears the bending stress low, advantages such as product overlength life-span.

Description

Micro switch

Technical Field

The utility model relates to a switch field particularly, especially relates to a micro-gap switch.

Background

The existing small microswitch has the defects that the conversion is insensitive, the risk of dead points exists, the service life is generally low, and the small microswitch needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a micro-gap switch, the bend angle control of shell fragment is at 3-20, and the shell fragment that adopts radian smooth transition's arc form drives the switching piece and actuates to realize switching on and breaking off of circuit, have that part mould preparation is convenient, with low costs, the part shaping is simple, easy equipment, the switch stroke is big, the shell fragment bears advantages such as bending stress hangs down, the product overlength life-span.

The purpose of the utility model is realized through the following technical scheme:

a microswitch comprises a shell, a first terminal and a second terminal which are arranged in the shell, an elastic conduction piece for conducting the first terminal and the second terminal, and a button for driving the elastic conduction piece to actuate, wherein the elastic conduction piece comprises a swinging piece movably connected with the first terminal, a switching piece movably connected with the swinging piece, and an elastic sheet for driving the switching piece to reset, the elastic sheet has elasticity, the button drives the swinging piece to rotate relative to the first terminal, the elastic sheet is in a bending state, and the bending angle of the elastic sheet is 3-20 degrees in an initial state.

The microswitch is different from the traditional microswitch, the bending angle of the elastic sheet is controlled to be 3-20 degrees, the arc-shaped elastic sheet with the arc smooth transition is adopted to drive the switching sheet to actuate so as to realize the on and off of a circuit, the microswitch has the advantages of convenient manufacture of a part mould, long service life, low cost, simple part forming and simpler assembly compared with the microswitch with the traditional spring moving sheet structure.

Optionally, in a possible implementation manner, the first terminal is provided with a half U-shaped slot, a left end portion of the elastic sheet abuts against the half U-shaped slot, the first terminal is in an inverted "Z" shape and includes a first longitudinal sheet, a transverse sheet and a second longitudinal sheet, and the half U-shaped slot is located on an upper surface of the transverse sheet.

The left end portion top of shell fragment is in half U draw-in groove department, the action of force point of shell fragment to first terminal is at half U draw-in groove, and half U draw-in groove mainly is located the upper surface of horizontal piece, half U draw-in groove inside has certain inclination, the event makes the action of shell fragment mainly distribute on horizontal piece, traditional structure's micro-gap switch, the effort of its shell fragment is used in the vertical piece of second completely, the change of shell fragment effort, make micro-gap switch structure more reasonable, mechanical structure arranges more balancedly, product operating force and shift position isoparametric are more stable.

The traditional micro switch only has the service life of 100 ten thousand times, and the service life of the micro switch can reach 1000 ten thousand times due to the optimized design of the elastic sheet.

Optionally, in a possible implementation manner, a connection region of the first longitudinal piece and the transverse piece is a first bevel, a connection region of the transverse piece and the second longitudinal piece is a second bevel, the left end of the half U-shaped clamping groove is connected to the second bevel, the right end of the elastic piece abuts against the switch piece, and the middle of the elastic piece is bent upward or downward.

Only the left end part of the half U-shaped clamping groove is connected with the second break angle, most of the area of the half U-shaped clamping groove is located on the transverse sheet, and the acting force of the elastic sheet on the first terminal is always acted on the transverse sheet in the bending process.

Optionally, in a possible implementation manner, the right end of the swinging member is rotatably connected to the first folding angle, the left end of the swinging member is provided with a groove, the left end of the switching piece is clamped in the groove, the left end of the swinging member abuts against the button, and the switching piece can swing relative to the groove.

The right end part of the swinging piece extends into the first folding angle and can rotate at a certain angle relative to the first folding angle, the rotation comprises clockwise rotation and anticlockwise rotation, the connection and disconnection of the first terminal and the second terminal are realized, when the swinging piece rotates, the left end part of the switching piece is clamped at the groove of the swinging piece, so that the end part of the switching piece moves along with the rotation of the swinging piece, when the end part of the switching piece moves, the whole switching piece swings along with the end part of the switching piece, the swinging piece and the switching piece move more smoothly and stably, the reliability is good, and the service life is longer than that of a traditional microswitch.

Optionally, in a possible implementation manner, a window is dug in the middle of the switching sheet, the two side portions of the switching sheet are respectively a first stopper and a second stopper, the first stopper is erected in the groove, the second stopper is provided with an inclined clamping groove, and the right end portion of the elastic sheet abuts against the inclined clamping groove. The second stop is provided with a conductive contact piece, and the second terminal is provided with a conductive contact corresponding to the conductive contact piece.

The first terminal passes from the department of windowing, and first dog and second dog are located the left and right sides of first terminal respectively, and the shell fragment is in the right side of first terminal, and the shell fragment top is between first terminal and second dog and the shell fragment is in the elastic bending state, presses the back when the button, and the shell fragment is strengthened by crooked degree, and the shell fragment also can increase to the effort of second dog for the second dog is down and through conductive contact and second terminal direct contact. The conductive contact and the conductive contact piece are arranged oppositely, so that when the second stop block is contacted with the second terminal, the conduction of the second stop block and the second terminal is stable and reliable.

Optionally, in a possible implementation, the swinging member, the switching piece and the elastic piece are made of conductive materials.

When the switching piece contacts with the second terminal, the second terminal is electrically connected with the first terminal through the swinging piece, the switching piece and the elastic piece.

Optionally, in a possible implementation, the left end of the swinging member abuts against a button, the lower portion of the button is provided with an arc-shaped contact surface, and the button abuts against the swinging member through the arc-shaped contact surface.

The setting contacts with the left end portion of swing piece at the arc contact surface of button lower part, the left end portion of swing piece also has smooth radian, the button contacts through smooth transition face with swing piece, thereby make contact between them more smooth and stable, when the button is down, order about swing piece and rotate, because contact surfaces between them have the radian, consequently, swing piece is at the rotation in-process, remain smooth contact with the button lower part all the time, guarantee external force and act on the button, can transmit swing piece department on the spot, the stroke of button is longer, the push-down of button is felt also more comfortablely simultaneously.

Optionally, in one possible implementation, the first and second terminals are fixedly mounted at the housing.

The first terminal and the second terminal are fixed at the shell, and the button, the swinging piece, the switching piece and the elastic piece are in a movable state and move under the action of external force, so that the fixed first terminal and the fixed second terminal are switched on or off.

The utility model discloses compare in prior art's beneficial effect and be:

the utility model discloses a micro-gap switch is different from traditional micro-gap switch, the bending angle control of shell fragment is at 3-20, the shell fragment that adopts radian smooth transition's arc form comes the drive switching piece to actuate to realize switching on and breaking off of circuit, have the convenient advantage of part mould preparation, long-lived, and with low costs, the part shaping is simple, its equipment is simpler and easier than traditional micro-gap switch who moves the piece structure, the switch stroke is big, the conversion is sensitive, no dead point, the shell fragment bears bending stress low, the product overlength life-span, the life-span can reach 1000 ten thousand times.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a three-dimensional structure diagram of the micro switch in an off state according to an embodiment of the present invention.

Fig. 2 is a front view of the micro switch in an off state according to an embodiment of the present invention.

Fig. 3 is a three-dimensional structure diagram of the elastic sheet according to an embodiment of the present invention.

Fig. 4 is a schematic view illustrating a bending angle of the elastic sheet in the initial state according to an embodiment of the present invention.

Fig. 5 is a three-dimensional structure diagram of the micro switch in a closed state according to an embodiment of the present invention.

Fig. 6 is a front view of the micro switch in a closed state according to an embodiment of the present invention.

Fig. 7 is an appearance structure diagram of the micro switch according to an embodiment of the present invention.

And (3) labeling: 1-shell, 2-first terminal, 3-second terminal, 4-elastic conducting piece, 5-button, 6-swinging piece, 7-switching piece, 8-elastic piece, 9-first folded angle, 10-second folded angle, 11-groove, 12-arc contact surface, 13-windowing, 14-first stop block, 15-second stop block, 16-inclined clamping groove, 17-conductive contact piece, 18-conductive contact, 19-first longitudinal piece, 20-transverse piece, 21-second longitudinal piece and 22-half U clamping groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when products of the application are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used merely for convenience of description and simplification of the description, and do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The technical solution in the present application will be described below with reference to the accompanying drawings.

A micro switch comprises a shell 1, a first terminal 2 and a second terminal 3 which are arranged in the shell 1, an elastic conduction piece 4 which conducts the first terminal 2 and the second terminal 3, and a button 5 which drives the elastic conduction piece 4 to actuate, wherein the elastic conduction piece 4 comprises a swinging piece 6 which is movably connected with the first terminal 2, a switching piece 7 which is movably connected with the swinging piece 6, and an elastic piece 8 which drives the switching piece 7 to reset, the elastic piece 8 has elasticity, the button 5 drives the swinging piece 6 to rotate relative to the first terminal 2, the elastic piece 8 is in a bending state, and in an initial state, the bending angle of the elastic piece 8 is 15 degrees, the angle R1 is 165 degrees, and the angle R2 is 7.5 degrees.

This micro-gap switch is different from traditional micro-gap switch, and the bend angle control of shell fragment 8 is at 15, and the shell fragment 8 that adopts the arc form of radian smooth transition drives the switch plate 7 and actuates to realize switching on and breaking off of circuit, have the convenient advantage of part mould preparation, longe-lived, and with low costs, the part shaping is simple, and its equipment is simpler and easier than the micro-gap switch of traditional spring rotor structure.

Optionally, in a possible implementation manner, the first terminal 2 is provided with a half U-shaped slot 22, the left end of the elastic sheet 8 abuts against the half U-shaped slot 22, the first terminal 2 is in an inverted "Z" shape and includes a first longitudinal sheet 19, a transverse sheet 20 and a second longitudinal sheet 21, and the half U-shaped slot 22 is located on the upper surface of the transverse sheet 20.

The left end portion top of shell fragment 8 is in half U draw-in groove 22 department, the action point of shell fragment 8 to the effect of first terminal 2 is in half U draw-in groove 22, and half U draw-in groove 22 mainly is located the upper surface of horizontal piece 20, half U draw-in groove 22 is inside to have certain inclination, so make the action of shell fragment 8 mainly distribute on horizontal piece 20, the micro-gap switch of traditional structure, its shell fragment 8's action is completely used in the vertical piece 21 of second, the change of shell fragment 8 action, it is more reasonable to make the micro-gap switch structure, mechanical structure arranges more balancedly, traditional micro-gap switch only has the life-span of 100 ten thousand, and this micro-gap switch's life-span is because the optimal design of shell fragment 8, can reach 1000 ten thousand times.

Optionally, in a possible implementation manner, a connection region of the first longitudinal piece 19 and the transverse piece 20 is a first folding angle 9, a connection region of the transverse piece 20 and the second longitudinal piece 21 is a second folding angle 10, a left end of the half U-shaped slot 22 is connected to the second folding angle 10, a right end of the elastic piece 8 abuts against the switch piece 7, and a middle of the elastic piece 8 is bent upward. In other embodiments, the middle portion of the spring plate may also be bent downward. In other embodiments, the middle portion of the spring plate may also be bent downward.

Only the left end of the half U-shaped clamping groove 22 is connected with the second bevel 10, most of the area of the half U-shaped clamping groove 22 is located on the transverse sheet 20, and the acting force of the elastic sheet 8 on the first terminal 2 is always acted on the transverse sheet 20 in the bending process.

Optionally, in a possible implementation manner, the right end of the swinging member 6 is rotatably connected to the first folding angle 9, the left end of the swinging member 6 is provided with a groove 11, the left end of the switch plate 7 is clamped in the groove 11, the left end of the swinging member 6 abuts against the button 5, and the switch plate 7 can swing relative to the groove 11.

The right end of the swinging piece 6 extends into the first folding angle 9 and can rotate at a certain angle relative to the first folding angle 9, the rotation comprises clockwise rotation and anticlockwise rotation, the connection and disconnection of the first terminal 2 and the second terminal 3 are realized, when the swinging piece 6 rotates, the left end of the switching piece 7 is clamped in the groove 11 of the swinging piece 6, so that the end of the switching piece 7 moves along with the rotation of the swinging piece 6, when the end of the switching piece 7 moves, the whole switching piece 7 swings along with the end of the switching piece 7, the swinging piece 6 and the switching piece 7 are more smooth and stable in actuation, the reliability is good, and the service life is longer than that of a traditional microswitch.

Optionally, in a possible implementation manner, a window 13 is dug in the middle of the switch plate 7, a first stopper 14 and a second stopper 15 are respectively arranged on two side portions of the switch plate 7, the first stopper 14 is erected in the groove 11, the second stopper 15 is provided with an inclined clamping groove 16, and a right end portion of the elastic piece 8 abuts against the inclined clamping groove 16. The second block 15 is provided with a conductive contact piece 17, and the second terminal 3 is provided with a conductive contact 18 corresponding to the conductive contact piece 17.

First terminal 2 passes from windowing 13, first dog 14 and second dog 15 are located the left and right sides of first terminal 2 respectively, shell fragment 8 is located the right side of first terminal 2, shell fragment 8 pushes up between first terminal 2 and second dog 15 and shell fragment 8 is in the elastic bending state, after button 5 pressed down, shell fragment 8 is strengthened by crooked degree, shell fragment 8 also can increase to the effort of second dog 15, make second dog 15 down and through conductive contact 17 and second terminal 3 direct contact. The conductive contact 18 and the conductive contact piece 17 are oppositely arranged, so that when the second stop 15 is contacted with the second terminal 3, the conduction of the two is stable and reliable.

Alternatively, in a possible implementation, the oscillating piece 6, the switching piece 7 and the elastic piece 8 are made of conductive materials.

When the switch plate 7 contacts the second terminal 3, the second terminal 3 is electrically connected to the first terminal 2 through the swinging member 6, the switch plate 7 and the spring plate 8.

Optionally, in a possible implementation, the left end of the oscillating piece 6 interferes with the push button 5, the lower part of the push button 5 is provided with an arc-shaped contact surface 12, and the push button 5 interferes with the oscillating piece 6 through the arc-shaped contact surface 12.

The arc contact surface 12 arranged at the lower part of the button 5 is contacted with the left end part of the swinging piece 6, the left end part of the swinging piece 6 also has smooth radian, the button 5 and the swinging piece 6 are contacted through smooth transition surfaces, so that the contact between the button 5 and the swinging piece is smoother and more stable, when the button 5 moves downwards, the swinging piece 6 is driven to rotate, and because the contact surfaces of the button 5 and the swinging piece have the radians, the swinging piece 6 is always kept in smooth contact with the lower part of the button 5 in the rotating process, the external force is ensured to act on the button 5, the external force can be reliably transmitted to the swinging piece 6, the stroke of the button 5 is longer, and meanwhile, the pressing hand feeling of the button 5 is more comfortable.

Alternatively, in a possible implementation, the first terminal 2 and the second terminal 3 are fixedly mounted at the housing 1.

The first terminal 2 and the second terminal 3 are fixed at the housing 1, and the button 5, the swinging member 6, the switching piece 7 and the elastic piece 8 are in a movable state and move under the action of external force, so that the fixed first terminal 2 and the fixed second terminal 3 are switched on or off.

The right end of the swinging piece 6 is inserted into the first dog-ear 9, the swinging piece 6 can rotate clockwise or anticlockwise around the first dog-ear 9, the left end of the swinging piece 6 is provided with a groove 11, the left end of the switching piece 7 is clamped in the groove 11, and the switching piece 7 can swing relative to the groove 11.

The right end part of the swinging piece 6 extends into the first folding angle 9 and can rotate at a certain angle relative to the first folding angle 9, the rotation comprises clockwise rotation and anticlockwise rotation, the connection and disconnection of the first terminal 2 and the second terminal 3 are realized, when the swinging piece 6 rotates, the left end part of the switching piece 7 is clamped in the groove 11 of the swinging piece 6, so that the end part of the switching piece 7 moves along with the rotation of the swinging piece 6, when the end part of the switching piece 7 moves, the whole switching piece 7 swings along with the end part of the switching piece 7, the actuation processes of the swinging piece and the switching piece are smooth and stable, the reliability is good, and the service life is longer than that of a traditional microswitch.

When the button 5 is pressed down, the swinging piece 6 is driven to rotate anticlockwise relative to the first terminal 2, the left end portion of the switch piece 7 moves towards the left side and the lower side along with the rotation of the swinging piece 6, the right end portion of the switch piece 7 synchronously moves towards the left side along with the left end portion and presses the elastic piece 8, the pressed elastic piece 8 generates acting force on the switch piece 7, the acting force faces towards the lower right side, and the right end of the switch piece 7 is driven to move downwards and contact with the second terminal 3, so that the first terminal 2 and the second terminal 3 are conducted.

When the button 5 rises, the swinging piece 6 loses the acting force of the button 5 on the button, at the moment, the conduction structure is not acted by external force and only receives the elastic acting force of the elastic piece 8, the elastic piece 8 generates a rightward acting force on the switching piece 7, the switching piece 7 moves rightward, the left end part of the switching piece 7 is hinged with the left end part of the swinging piece 6 to drive the swinging piece 6 to rotate clockwise, the left end part of the switching piece 7 synchronously moves upwards along with the swinging piece 6, the elastic piece 8 still continuously generates a rightward acting force on the swinging piece 6 to force the switching piece 7 to move upwards, in the process, the bending degree of the elastic piece 8 is gradually reduced, the elastic acting force generated by the elastic piece 8 on the switching piece 7 is also reduced along with the elastic acting force until balance is achieved, and the switching piece 7 is separated from the second terminal 3; when the balance is reached, the elastic force F1 generated by the elastic sheet 8 on the switch sheet 7 and the force F2 generated by the swinging piece 6 on the switch sheet 7 are balanced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A microswitch comprises a shell, a first terminal and a second terminal which are arranged in the shell, an elastic conduction piece for conducting the first terminal and the second terminal, and a button for driving the elastic conduction piece to actuate, wherein the elastic conduction piece comprises a swinging piece movably connected with the first terminal, a switching piece movably connected with the swinging piece, and an elastic sheet for driving the switching piece to reset, the elastic sheet has elasticity, the button drives the swinging piece to rotate relative to the first terminal, and the microswitch is characterized in that the elastic sheet is in a bending state, and the bending angle of the elastic sheet is 3-20 degrees in an initial state.

2. The microswitch of claim 1, wherein the first terminal is provided with a half U-shaped slot, and the left end of the elastic sheet abuts against the half U-shaped slot.

3. The microswitch of claim 2, wherein the first terminal is in the shape of an inverted "Z" comprising a first longitudinal tab, a transverse tab and a second longitudinal tab, the half U-shaped slot being located on an upper surface of the transverse tab.

4. The microswitch of claim 3, wherein the connection area of the first longitudinal piece and the transverse piece is a first bevel, the connection area of the transverse piece and the second longitudinal piece is a second bevel, and the left end of the half U-shaped clamping groove is connected with the second bevel.

5. The microswitch of claim 1, wherein a middle portion of the spring plate is bent upward or downward.

6. The microswitch of claim 1, wherein a right end of the spring plate abuts against the switch plate.

7. The microswitch of claim 4, wherein the swinging member is rotatably connected to the first fold angle at a right end thereof, the swinging member is provided with a groove at a left end thereof, the switching piece is engaged with the groove at a left end thereof, the swinging member abuts against the push button at a left end thereof, and the switching piece is swingable relative to the groove.

8. The microswitch of claim 7, wherein a window is dug in the middle of the switch plate, a first stopper and a second stopper are respectively arranged on two side portions of the switch plate, the first stopper is erected in the groove, the second stopper is provided with an inclined clamping groove, and the right end portion of the elastic piece abuts against the inclined clamping groove.

9. The microswitch of claim 8, wherein the second stop is provided with a conductive contact and the second terminal is provided with a conductive contact corresponding to the conductive contact.

10. The microswitch of claim 1, wherein the swinging member, the switching piece and the resilient piece are made of a conductive material, the lower portion of the button is provided with an arc-shaped contact surface, the button is abutted against the swinging member through the arc-shaped contact surface, and the first terminal and the second terminal are fixedly mounted at the housing.

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