CN217983167U - Improved microswitch - Google Patents

Abstract

The utility model discloses an improved microswitch, which comprises a pressing handle, a button, a movable sheet component and a base component, wherein the base component comprises a base and a common terminal, a normally open terminal and a normally closed terminal which are respectively arranged on the base and the upper ends of which are protruded out of the base, the upper end of the common terminal is a connecting part, and the upper ends of the normally open terminal and the normally closed terminal are respectively provided with a static contact; the movable piece component comprises an elastic movable piece, and an arc-shaped elastic piece and a movable contact which are respectively arranged on the elastic movable piece; the elastic moving piece is provided with a first perforation and a second perforation which are sequentially distributed along two ends; an arc-shaped elastic sheet is fixed on the outer side edge of the second through hole, and the movable contact is positioned on the outer side of the second through hole; the connecting part is provided with a first clamping block and a second clamping block which are respectively inserted into the first through hole and the second through hole and respectively clamped on the outer side of the first through hole and the inner side of the arc-shaped elastic sheet; the button is connected with the elastic moving piece. The utility model discloses a structural improvement can prolong the life of switch to a certain extent.

Description

Improved microswitch

Technical Field

The utility model relates to the technical field of switches, specifically relate to a modified micro-gap switch.

Background

The switch belongs to a component, has a main function as a control element, can be widely applied to circuit conversion of various electrical equipment, and is an extremely important class of electromechanical elements. The switches are various in variety and classified according to operation methods, and mainly include rotary switches, button switches, toggle switches, touch switches, micro switches and the like. The microswitch is a precise mechanical electric switch with a quick-acting mechanism and a tiny contact gap, and plays a role in conversion and control in the circuit of the whole machine to connect or disconnect a certain circuit. The microswitch is an important control element in the whole machine, and based on the special requirements of the whole machine, the product has the characteristics of wide use temperature, short action stroke, small pressing force, high repetition precision, strong shock resistance and the like.

The invention patent application number 202011616024.1 discloses a novel microswitch, which comprises a handle, a pressing cylinder, a sealing ring, a rubber shell, a waterproof shell, a movable sheet component, a base component and a spring, wherein the pressing cylinder is arranged on the handle; the moving plate subassembly includes moving plate and movable contact, the moving plate is including integrated into one piece's butt portion, switching portion and contact portion, butt portion is the arc form, and one end is the closed angle, and the other end is connected with switching portion one end, the other end of switching portion with contact portion one end and be connected to bend and form the angulation, be provided with the spring hanging hole of taking the chamfer in the switching portion, the chamfer setting is in switching portion bottom surface, the movable contact setting is contacting the other end of portion. The base component comprises a base and a terminal component, the terminal component is connected with the base through a plastic coating process and comprises a common terminal, a normally open terminal and a normally closed terminal, the common terminal is provided with a connecting portion, and the normally open terminal and the normally closed terminal are respectively provided with a static contact.

The above described micro-switches, while having some advantages, still present improvements, such as: because the rotor subassembly uses as an elasticity rotor structure with the spring cooperation, and the both ends of spring need collude with connecting portion and rotor subassembly respectively and link to each other, the process is more when this kind of structure is produced the assembly, can reduce the packaging efficiency to a certain extent, in addition, this kind of structure is after the live time is of a specified duration, when pressing the movable spring, the condition that the pine takes off can appear sometimes in the tip of spring, namely spring and connecting portion or rotor subassembly unhook, thereby cause micro-gap switch's damage and can not normal use, and then the life of micro-gap switch has been reduced to a certain extent.

Therefore, improvements in the prior art are needed.

SUMMERY OF THE UTILITY MODEL

To the problem that above prior art exists, the utility model aims at providing a modified micro-gap switch, its is through the institutional advancement to the moving plate subassembly to cancelled the setting of spare parts such as spring, it can improve the packaging efficiency to a certain extent, can also reduce the probability that micro-gap switch damaged, and then can prolong micro-gap switch's life to a certain extent.

In order to realize the purpose, the technical scheme of the utility model is that:

an improved microswitch comprises a pressing handle, a button, a moving plate assembly and a base assembly, wherein the base assembly comprises a base, a common terminal, a normally open terminal and a normally closed terminal, the common terminal, the normally open terminal and the normally closed terminal are respectively installed on the base, the upper end of the common terminal protrudes out of the base, the upper end of the common terminal is a connecting portion, and the upper ends of the normally open terminal and the normally closed terminal are respectively provided with a static contact; the movable piece assembly comprises an elastic movable piece, and an arc-shaped elastic piece and a movable contact which are respectively arranged on the elastic movable piece; the elastic moving piece is provided with a first perforation and a second perforation which are sequentially distributed along two ends; the arc-shaped elastic sheet is fixed on the outer side edge of the second through hole, and the movable contact is positioned on the outer side of the second through hole; the connecting part is provided with a first clamping block and a second clamping block which are respectively inserted into the first through hole and the second through hole and respectively clamped on the outer side of the first through hole and the inner side of the arc-shaped elastic sheet; the button is connected with the elastic moving piece.

The technical scheme is as follows:

a first clamping groove used for being clamped with the first clamping block is formed in the outer side edge of the first through hole; and a second clamping groove used for being clamped with the second clamping block is formed in the inner side edge of the arc-shaped elastic sheet.

The first fixture block and the second fixture block are respectively in a shape with a large middle and a small lower end; the first clamping groove and the second clamping groove are respectively clamped with the lower end of the first clamping block and the lower end of the second clamping block.

Also comprises an upper cover and a sealing gasket; the sealing gasket is fittingly arranged on the top surface of the base; the upper cover is tightly pressed on the sealing gasket and is detachably connected with the base; the button is mounted on the upper cover.

Extending blocks respectively extend downwards from two sides of the lower end of the upper cover, and buckling grooves are formed in the extending blocks; grooves are respectively arranged on two sides of the base, and buckling blocks corresponding to the buckling grooves are arranged on the side walls of the grooves; the extension block can be correspondingly inserted into the groove, and the buckling block and the buckling groove can be detachably buckled.

Two extending blocks respectively extend downwards from two sides of the lower end of the upper cover, and a pressure groove is formed between every two adjacent extending blocks; two grooves are correspondingly arranged on two sides of the base respectively; pressing blocks matched with the pressing grooves protrude outwards from the periphery of the sealing gasket respectively; after the upper cover is buckled with the base, the side edge of the upper cover is correspondingly pressed on the pressing block through the pressing groove.

A first bump and a second bump are respectively arranged on the top surface of the base; the upper end of the common terminal is arranged on the first bump; the upper ends of the normally open terminal and the normally closed terminal are respectively arranged on the second bump; and a first clamping hole and a second clamping hole for the first bump and the second bump to penetrate in a matching way are formed in the sealing gasket.

The button is arranged on the upper cover; one end of the button penetrates through the upper cover and is connected with the middle part of the elastic moving piece, so that the moving contact on the elastic moving piece can be respectively connected with the static contacts of the normally open terminal and the normally closed terminal in a switching manner.

And a sealing cap with the lower end connected with the upper cover is sleeved on the button.

Two oppositely arranged positioning holes are formed in one end of the pressing handle, and two oppositely arranged positioning blocks are arranged at one end of the upper cover; the two positioning blocks are correspondingly inserted into the two positioning holes; the other end of the pressing handle is obliquely arranged relative to the upper cover and can be used for pressing the button.

The utility model has the advantages that:

the utility model discloses a divide into elasticity movable plate and arc shell fragment and the movable contact of fixed connection on elasticity movable plate with the movable plate subassembly, it is through the improvement of structure and the setting of parts such as cancellation spring, the simplified structure has also made things convenient for the assembly and has improved the packaging efficiency, then again through set up in the first draw-in groove in the first perforation outside with set up in the inboard second draw-in groove of arc shell fragment respectively with first fixture block and second fixture block joint location back, thereby can utilize the trend that the arc shell fragment outwards opens always to make first draw-in groove and first fixture block tightly joint together, then utilize the junction of first draw-in groove and first fixture block as the setpoint to make second draw-in groove and second fixture block tightly joint together again, behind these two mutually supported joint structures, can make elasticity movable plate and arc shell fragment all be difficult to take off relations and damage, and then the life-span that can extend micro-gap switch to a certain extent.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a longitudinal sectional view of the present invention;

fig. 3 is an exploded view of the present invention;

fig. 4 is a schematic structural view of the rotor assembly of the present invention.

Reference numerals:

1. pressing the handle; 2. a button; 3. a base; 4. a common terminal; 41. a connecting portion; 42. a first clamping block; 43. a second fixture block; 5. a normally open terminal; 6. a normally closed terminal; 7. a stationary contact; 8. an elastic moving plate; 81. a first perforation; 82. a second perforation; 83. a first card slot; 84. a second card slot; 9. an arc-shaped elastic sheet; 10. a movable contact; 11. an upper cover; 12. a gasket; 13. an extension block; 14. buckling grooves; 15. buckling blocks; 16. pressing a groove; 17. briquetting; 18. a first bump; 19. a second bump; 20. a first card hole; 21. a second card hole; 22. a sealing cap; 23. positioning holes; 24. positioning a block; 25. and (6) a groove.

Detailed Description

The invention will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the invention.

As shown in fig. 1-4, an improved microswitch comprises a pressing handle 1, a button 2, a moving plate assembly and a base assembly, wherein the base assembly comprises a base 3, and a common terminal 4, a normally open terminal 5 and a normally closed terminal 6 which are respectively installed on the base 3 and have upper ends protruding out of the base 3, the upper end of the common terminal 4 is a connecting part 41, and the upper ends of the normally open terminal 5 and the normally closed terminal 6 are respectively provided with a stationary contact 7; specifically, the moving plate assembly comprises an elastic moving plate 8, and an arc-shaped spring plate 9 and a moving contact 10 which are respectively arranged on the elastic moving plate 8; the elastic moving plate 8 is provided with a first perforation 81 and a second perforation 82 which are distributed along two ends in sequence; the arc-shaped elastic sheet 9 is fixed on the outer side edge of the second through hole 82, and the movable contact 10 is positioned on the outer side of the second through hole 82; the connecting part 41 is provided with a first clamping block 42 and a second clamping block 43 which are respectively inserted into the first through hole 81 and the second through hole 82 and respectively clamped on the outer side of the first through hole 81 and the inner side of the arc-shaped elastic sheet 9; the button 2 is connected with an elastic moving piece 8. The movable contact 10 can be conveniently and correspondingly matched with the two fixed contacts 7 through the matching of the parts, and the switching of the normally open or normally closed circuit is formed.

As shown in fig. 2 and 3, a first locking groove 83 for locking with the first locking block 42 is provided on an outer side edge of the first through hole 81; a second locking groove 84 for locking with the second locking block 43 is arranged on the inner side edge of the arc-shaped elastic sheet 9. Through the arrangement, the elastic moving piece 8 and the arc-shaped elastic piece 9 can be connected with the first clamping block 42 and the second clamping block 43 more stably and are not easy to loosen.

Preferably, as shown in fig. 2 and 3, the first latch 42 and the second latch 43 have shapes with a large middle and a small lower end, respectively. In this embodiment, in order to enable the first latch 42 and the second latch 43 to more easily penetrate into the first through hole 81 and the second through hole 82, the upper ends of the first latch 42 and the second latch 43 may be respectively made smaller, so that the first latch 42 and the second latch 43 respectively have a shape with two smaller ends and a larger middle; specifically, the first and second catching grooves 83 and 84 are respectively caught to lower ends of the first and second catching blocks 42 and 43 to prevent the first and second catching blocks 42 and 43 from being disengaged from the first and second catching grooves 83 and 84, respectively. Through the arrangement, the first clamping block 42 and the second clamping block 43 can be stably clamped with the elastic moving piece 8 and the arc-shaped elastic piece 9, the looseness is not easy to occur, and the clamping mode is simple and effective.

As shown in fig. 2 and 3, the device further comprises an upper cover 11 and a sealing gasket 12; the sealing gasket 12 is fittingly mounted on the top surface of the base 3; the upper cover 11 is tightly pressed on the sealing gasket 12 and is detachably connected with the base 3; the button 2 is mounted on the upper cover 11. The sealing performance between the upper cover 11 and the base 3 can be improved by arranging the sealing gasket 12 and pressing the upper cover 11, so that the integral waterproof effect of the microswitch is improved.

As shown in fig. 2 and 3, extension blocks 13 respectively extend downwards from two sides of the lower end of the upper cover 11, and a fastening groove 14 is formed on the extension block 13; grooves 25 are respectively arranged on two sides of the base 3, and buckling blocks 15 corresponding to the buckling grooves 14 are arranged on the side walls of the grooves 25; the extension block 13 can be correspondingly inserted into the groove 25, and the fastening block 15 and the fastening groove 14 can be detachably fastened. The base 3 and the upper cover 11 can be conveniently installed by arranging the fastening groove 14 and the fastening block 15, so that the purpose of quick assembly is realized, and the groove 25 is arranged so that the extension block 13 can be conveniently inserted in a matching way, so that the upper cover 11 is more matched with the base 3.

As shown in fig. 2 and 3, two extending blocks 13 respectively extend downwards from two sides of the lower end of the upper cover 11, and a pressure groove 16 is formed between two adjacent extending blocks 13; two grooves 25 are correspondingly arranged on two sides of the base 3 respectively; pressing blocks 17 matched with the pressing grooves 16 are respectively protruded outwards at the periphery of the sealing gasket 12; after the upper cover 11 is fastened with the base 3, the side edge of the upper cover 11 is correspondingly pressed on the pressing block 17 through the pressing groove 16. The pressure piece 17 can be used for being pressed by the upper cover 11 in a matching mode, so that stability and sealing degree are improved.

As shown in fig. 2 and 3, a first projection 18 and a second projection 19 are provided on the top surface of the base 3, respectively; the upper end of the common terminal 4 is disposed on the first bump 18; the upper ends of the normally open terminal 5 and the normally closed terminal 6 are respectively arranged on the second bump 19; the sealing gasket 12 is provided with a first locking hole 20 and a second locking hole 21 for the first projection 18 and the second projection 19 to penetrate in a matching manner. The above arrangement enables the base 3 and the gasket 12 to be mounted in a matching manner.

As shown in fig. 2 and 3, the push button 2 is provided on the upper cover 11; one end of the button 2 penetrates through the upper cover 11 and is connected with the middle part of the elastic movable piece 8, so that the movable contact 10 on the elastic movable piece 8 can be respectively connected with the static contact 7 of the normally open terminal 5 and the normally closed terminal 6 in a switching way. The specific connection position between the push button 2 and the elastic moving piece 8 is a position between the first through hole 81 and the second through hole 82. Since the installation manner of the button 2 is also the prior art, it is not described in detail here.

As shown in fig. 2 and 3, the button 2 is further sleeved with a sealing cap 22 having a lower end connected to the upper cover 11, so that the sealing performance of the button 2 can be improved.

As shown in fig. 2 and 3, two positioning holes 23 are oppositely arranged at one end of the pressing handle 1, and two positioning blocks 24 are oppositely arranged at one end of the upper cover 11; the two positioning blocks 24 are correspondingly inserted into the two positioning holes 23; the other end of the press handle 1 is arranged obliquely with respect to the upper cover 11 and can be used to press on the push button 2. The pressing handle 1 can be conveniently installed by arranging the positioning block 24 and the positioning hole 23 which are matched with each other, so that the assembling speed is improved.

Preferably, in order to facilitate production and manufacture, the elastic moving piece 8 and the arc-shaped elastic piece 9 are integrally formed.

Preferably, the common terminal 4, the normally open terminal 5 and the normally closed terminal 6 are connected with the base 3 by adopting a plastic-coated process.

When the switch is used, the button 2 is pressed down and acts on the elastic moving piece 8 by pressing the button 2, and then the movable contact 10 can move upwards or downwards by matching the clamping between the arc-shaped elastic piece 9 and the second clamping block 43 and utilizing the elasticity of the elastic moving piece 8 and the arc-shaped elastic piece 9, namely the movable contact 10 can be respectively matched with the two fixed contacts 7 correspondingly and forms the switching of the normally open or the normally closed circuit; for example, when the push button 2 is pushed down, the movable contact 10 is brought into contact with the stationary contact 7 of the normally open terminal 5 by the contraction force of the arc-shaped spring piece 9, and when the push button 2 is released, the movable contact 10 is brought into contact with the stationary contact 7 of the normally closed terminal 6 by the expansion force of the arc-shaped spring piece 9. Since the switching principle of the normally open or normally closed circuit is the prior art, it is not described in detail here.

To sum up, the utility model discloses a divide into elastic rotor and arc-shaped elastic sheet and the movable contact of fixed connection on elastic rotor with the rotor subassembly, it is through the improvement of structure and the setting of parts such as cancellation spring, the structure has been simplified and the assembly has also been made things convenient for and the packaging efficiency has been improved, then through setting up the first draw-in groove in the first perforation outside and setting up at the inboard second draw-in groove of arc-shaped elastic sheet respectively with first fixture block and second fixture block joint location back, thereby can utilize the arc-shaped elastic sheet outwards open trend always to make first draw-in groove and first fixture block joint together tightly, then utilize the junction of first draw-in groove and first fixture block as the setpoint to make second draw-in groove and second fixture block joint together tightly together again, behind this two heavily mutually supported joint structures, can make elastic rotor and arc-shaped elastic sheet all be difficult to take off and take off promptly, be difficult for unhooking damage, and then can prolong micro-gap switch's life to a certain extent.

The utility model discloses other corresponding technical features for supplementary technical scheme is implemented, technical staff can combine current conventional technical means to carry out corresponding implementation or improve on its basis, and the technical means to other relevant aspects is no longer repeated here.

In the description of the present application, the appearances of the phrases "embodiment one," "this embodiment," "in particular implementations," and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment or example. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example; furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present application, the terms "connect", "mount", "fix", "set", "have", etc. are used in a broad sense, for example, the term "connect" may be a fixed connection or an indirect connection through intermediate components without affecting the relationship and technical effects of the components, or may be an integral connection or a partial connection, as in this case, for a person skilled in the art, the specific meaning of the terms in the present application may be understood according to specific situations.

The foregoing description of the embodiments is provided to enable any person skilled in the art to make and use the embodiments, and it is to be understood that various modifications may be readily apparent to those skilled in the art, and that the generic principles defined herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present disclosure is not limited to the above embodiments, and modifications to the following cases should be included within the scope of the present disclosure: (1) a new technical proposal which is implemented based on the technical proposal of the utility model and combined with the prior common general knowledge; (2) the technical effect produced by adopting the known technology to equivalently replace part of the characteristics of the technical scheme of the utility model is the same as the technical effect of the utility model, for example, equivalent replacement is carried out on the conventional production equipment and devices used in the process; (3) the technical scheme of the utility model is used as a basis for expansion, and the essential content of the expanded technical scheme does not exceed the technical scheme of the utility model; (4) the technical means obtained by using the equivalent transformation made by the text recorded content or the attached drawings of the specification of the utility model is applied to other schemes in the relevant technical fields.

Claims (10)

1. The utility model provides a modified micro-gap switch, is including pressing handle, button, rotor subassembly and base subassembly, the base subassembly includes the base and installs respectively the base and upper end protrusion in the common terminal of base, normally open terminal and normally closed terminal, common terminal upper end is connecting portion, normally open the terminal with the upper end of normally closed terminal is provided with stationary contact, its characterized in that respectively:

the movable piece assembly comprises an elastic movable piece, and an arc-shaped elastic piece and a movable contact which are respectively arranged on the elastic movable piece; the elastic moving piece is provided with a first perforation and a second perforation which are sequentially distributed along two ends; the arc-shaped elastic sheet is fixed on the outer side edge of the second through hole, and the movable contact is positioned on the outer side of the second through hole; the connecting part is provided with a first clamping block and a second clamping block which are respectively inserted into the first through hole and the second through hole and respectively clamped on the outer side of the first through hole and the inner side of the arc-shaped elastic sheet; the button is connected with the elastic moving piece.

2. The improved microswitch of claim 1, wherein:

a first clamping groove used for being clamped with the first clamping block is formed in the outer side edge of the first through hole; and a second clamping groove used for being clamped with the second clamping block is formed in the inner side edge of the arc-shaped elastic sheet.

3. The improved microswitch of claim 2, wherein:

the first fixture block and the second fixture block are respectively in a shape with a large middle and a small lower end; the first clamping groove and the second clamping groove are clamped with the lower end of the first clamping block and the lower end of the second clamping block respectively.

4. The improved microswitch of claim 1, wherein:

also comprises an upper cover and a sealing gasket; the sealing gasket is fittingly arranged on the top surface of the base; the upper cover is pressed on the sealing gasket and is detachably connected with the base; the button is installed on the upper cover.

5. The improved microswitch of claim 4, wherein:

extending blocks respectively extend downwards from two sides of the lower end of the upper cover, and buckling grooves are formed in the extending blocks; grooves are respectively arranged on two sides of the base, and buckling blocks corresponding to the buckling grooves are arranged on the side walls of the grooves; the extension block can be correspondingly inserted into the groove, and the buckling block and the buckling groove can be detachably buckled.

6. The improved microswitch of claim 5, wherein:

two extending blocks respectively extend downwards from two sides of the lower end of the upper cover, and a pressure groove is formed between every two adjacent extending blocks; two grooves are correspondingly arranged on two sides of the base respectively; pressing blocks matched with the pressing grooves are protruded outwards on the periphery of the sealing gasket; after the upper cover and the base are buckled, the side edge of the upper cover is correspondingly pressed on the pressing block through the pressing groove.

7. The improved microswitch of claim 4, wherein:

a first bump and a second bump are respectively arranged on the top surface of the base; the upper end of the common terminal is arranged on the first bump; the upper ends of the normally open terminal and the normally closed terminal are respectively arranged on the second bump; and a first clamping hole and a second clamping hole for the first lug and the second lug to penetrate in a matching manner are formed in the sealing pad respectively.

8. The improved microswitch of claim 4, wherein:

the button is arranged on the upper cover; one end of the button penetrates through the upper cover and is connected with the middle part of the elastic moving piece, so that the moving contact on the elastic moving piece can be respectively connected with the static contacts of the normally open terminal and the normally closed terminal in a switching manner.

9. The improved microswitch of claim 8, wherein:

and a sealing cap with the lower end connected with the upper cover is sleeved on the button.

10. The improved microswitch of claim 4, wherein:

two oppositely arranged positioning holes are formed in one end of the pressing handle, and two oppositely arranged positioning blocks are arranged at one end of the upper cover; the two positioning blocks are correspondingly inserted into the two positioning holes; the other end of the pressing handle is obliquely arranged relative to the upper cover and can be used for pressing the button.

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