CN117672751A - Miniature double-circuit sealed switch - Google Patents

Abstract

The invention discloses a miniature double-loop sealed switch which comprises a base, terminal assemblies, a shell, a conversion group, a pressing die and a spring, wherein the base is provided with at least two groups of terminal assemblies, the shell is in cover connection with the base, the conversion group comprises elastic sheets and moving sheets, the number of the moving sheets is the same as that of the terminal assemblies, the elastic sheets are in plastic-coated connection with the set number of the moving sheets to form an insulating piece, the middle part of the moving sheets is connected with a common terminal, the pressing die is provided with a sliding block, the sliding block is abutted with the elastic sheets, the other end of the pressing die extends outwards through the shell, and two ends of the spring are respectively abutted against the pressing die and a spring top plate. The invention forms a lever structure between the moving plates and the terminal assembly, and the sliding block acts on the elastic sheet by pressing the pressing catch, so that the set number of moving plates are driven to swing simultaneously, thereby realizing the switching and independent control of a plurality of groups of signals.

Description

Miniature double-circuit sealed switch

Technical Field

The invention relates to the technical field of switches, in particular to a miniature double-loop sealed switch.

Background

The microswitch is a contact mechanism that performs a switching operation with a predetermined stroke and a predetermined force, and is covered with a housing, and the outside of the housing is provided with a kind of switch that drives a lever.

At present, the existing double-loop switches on the market have the problems that the volume is large, the independence of internal switch conversion is not realized, synchronous conversion cannot be realized in the conversion process, and meanwhile, the existing double-loop switches have no waterproof performance and the like; aiming at the problems, the small-sized sealed double-loop switch which is small in size, sensitive in conversion, high in synchronism and good in sealing performance is designed in market demand, and is mainly applied to the fields of precise electronic equipment such as automobile electronic control, instruments and meters, household appliances and the like.

Disclosure of Invention

The invention aims to provide a miniature double-loop sealed switch which has reasonable structural design, can be synchronously converted and has a waterproof function.

In order to solve the technical problems, the invention can be realized by adopting the following technical scheme:

a miniature dual-circuit sealed switch comprising:

the base is provided with two groups of terminal assemblies, and the terminal assemblies comprise a common terminal, a normally closed terminal and a normally open terminal;

the shell is covered with the base to form a containing space, and a spring top plate is arranged on the shell;

the conversion group is arranged in the accommodating space and comprises elastic sheets and moving sheets, the number of the moving sheets is the same as that of the terminal assemblies and corresponds to that of the terminal assemblies one by one, the elastic sheets are bent and are in plastic-covered connection with the moving sheets with the set number to form an insulating piece, the middle part of each moving sheet is connected with a common terminal, and two ends of each moving sheet are respectively in switching contact with a normally closed terminal and a normally open terminal;

the pressing device comprises a pressing part, a pressing lug and a spring plate, wherein one end of the pressing part is arranged in the accommodating space, the other end of the pressing part penetrates through the side wall of one side of the shell and extends outwards, a sliding block is arranged on the pressing part, and the sliding block is provided with a pressing lug which is abutted with the spring plate;

the spring is arranged in the accommodating space, and two ends of the spring are respectively abutted against the pressing mechanism and the spring top plate;

when the pressing mechanism is in an initial state, a sliding block on the pressing mechanism is positioned at one side of the normally closed terminal, a pressing lug on the sliding block presses the elastic sheet, at the moment, the movable sheet is tightly abutted against the common terminal and the normally closed terminal under the action force of the elastic sheet, the normally closed terminal is switched on, and the normally open terminal is switched off; on the contrary, when the pressing lug boss on the sliding block slides through the highest point of the elastic sheet and the conversion salient point of the common terminal during pressing, the sliding block can slide to one side of the normally open terminal under the acting force of the elastic sheet, and the moving sheet is abutted with the normally open terminal and disconnected with the normally closed terminal under the action of the lever principle, so that the conversion of the switch is realized.

In one embodiment, the spring top plate is arranged on one side of the shell, a spring positioning column is arranged on the spring top plate, and one end of the spring is sleeved on the spring positioning column.

In one embodiment, a conversion groove is formed in the middle of the moving plate, and the conversion convex points of the common terminal are abutted in the conversion groove of the moving plate to swing the moving plate.

In one embodiment, the pressing mechanism is located at one end of the accommodating space, a sliding groove is formed in the end of the sliding groove, a limiting block is arranged at the end of the sliding groove, the sliding block slides in the sliding groove, and when the sliding block slides, the pressing protruding block on the sliding block acts on the elastic sheet.

In one embodiment, the inner wall of the shell is provided with a pressing sliding groove, one end of the pressing sliding groove, which is positioned in the accommodating space, is provided with pressing sliding blocks corresponding to the pressing sliding groove, respectively, on two sides of the pressing sliding groove.

In one embodiment, a sealing cap is arranged at one end of the pressing part extending outwards from one side of the shell, one end of the sealing cap is sealed with the pressing part clamp, and the other end of the sealing cap is sealed with the shell through hot riveting.

In one embodiment, the terminal assembly is molded on the base by a molding process, one end of the terminal assembly is arranged in the accommodating space, the other end extends to the outside of the base, the common terminal is arranged between the normally closed terminal and the normally open terminal, and one end of the common terminal, which is abutted to the moving plate conversion groove, is a conversion convex point.

In one embodiment, after the base is covered with the shell, a first sealing groove is formed, and sealant is added in the first sealing groove.

In one embodiment, after the spring top plate is connected with the housing, a second sealing groove is formed, and sealant is added in the second sealing groove.

In one embodiment, the length, width and height dimensions of the shell are 8mm.

The beneficial effects are that:

1. the switch has the advantages that the structure design is reasonable, the sliding block on the pressing mechanism presses the elastic sheet by pressing the pressing mechanism on one side of the shell, the conversion groove of the movable sheet and the conversion convex point of the common terminal are used as fulcrums to swing, two ends of the movable sheet are respectively in switching contact with the normally closed terminal and the normally open terminal, signal conversion is achieved, and finally the structure of the switch is simple and reasonable.

2. Synchronous conversion and independent control are realized, two groups of terminal assemblies are arranged on the base, corresponding moving plates are arranged, the moving plates are in one-to-one correspondence with the terminal assemblies, the moving plates with set quantity are in plastic-coated connection with the elastic plates, when the sliding blocks on the pressing mechanism act on the elastic plates, the elastic plates can drive the moving plates with set quantity to swing simultaneously, so that synchronous conversion of multiple groups of signals is realized, and because the moving plates with set quantity are connected by plastic-coated connection, insulating pieces are formed, interference cannot be caused among the moving plates, and therefore, independent control can be realized between each group of terminal assemblies and the corresponding moving plates.

3. The waterproof sealing device has the waterproof function, sealant is respectively added in the first sealing groove and the second sealing groove, the shell and the base are sealed through the sealant, the spring top plate and the shell are sealed, meanwhile, a sealing cap is arranged between the extending end of the pressing device and the shell, and finally, the accommodating space is sealed, so that the waterproof function of the switch is realized.

Drawings

FIG. 1 is an exploded view of a miniature dual-circuit sealed switch of the present invention;

FIG. 2 is a schematic diagram of a miniature dual-circuit sealed switch according to the present invention

FIG. 3 is a cross-sectional view of a miniature dual-circuit sealed switch of the present invention;

FIG. 4 is a schematic diagram of a switch set of a miniature dual-circuit sealed switch according to the present invention;

FIG. 5 is a schematic view of a spring top plate of a miniature dual-circuit sealed switch according to the present invention;

FIG. 6 is a schematic diagram of a rotor structure of a miniature dual-circuit sealed switch according to the present invention;

FIG. 7 is a schematic diagram of a latch structure of a miniature dual-circuit sealed switch according to the present invention;

FIG. 8 is a schematic illustration showing a snap-in exploded view of a miniature dual-circuit sealed switch of the present invention;

fig. 9 is a schematic diagram of a housing structure of a miniature dual-circuit sealed switch according to the present invention.

As shown in the accompanying drawings:

100. a base;

200. a terminal assembly; 210. a common terminal; 211. converting the convex points; 220. a normally closed terminal;

230. a normally open terminal;

300. a housing; 310. a spring top plate; 311. a spring positioning column; 320. pressing the sliding groove;

400. a conversion group; 410. a spring plate; 420. a moving plate; 421. a conversion groove;

500. pressing the pin; 510. a sliding block; 511. pressing the bump; 520. a sliding groove;

530. a limiting block; 540. pressing the sliding block;

600. a spring;

700. a sealing cap;

800. a first seal groove;

900. and a second seal groove.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a miniature dual-circuit sealed switch includes:

a base 100, two sets of terminal assemblies 200 are provided on the base 100, and the terminal assemblies 200 include a common terminal 210, a normally closed terminal 220, and a normally open terminal 230;

the housing 300, the housing 300 and the base 100 are covered to form a containing space, and a spring top plate 310 is further provided on the housing 300;

the conversion set 400 is disposed in the accommodating space, the conversion set 400 includes a spring plate 410 and a moving plate 420, the number of the moving plates 420 is the same as that of the terminal assemblies 200, and corresponds to one another, the spring plate 410 is bent and is in plastic-coated connection with the moving plates 420 with a set number, so as to form an insulating member 430, the middle part of the moving plate 420 is connected with the common terminal 210, and two ends of the moving plate 420 are respectively in switching contact with the normally closed terminal 220 and the normally open terminal 230;

the pressing device comprises a pressing device 500, wherein one end of the pressing device 500 is arranged in a containing space, the other end of the pressing device extends outwards through the side wall of one side of the shell 300, a sliding block 510 is arranged on the pressing device 500, a pressing lug 511 is arranged on the sliding block 510, and the pressing lug 511 is abutted against the elastic sheet 410;

the spring 600, the spring 600 locates the accommodation space, and both ends butt in pressing sinkers 500 and spring roof 310 respectively.

Specifically, in this embodiment, the middle part of the moving plate 420 of the conversion set 400 is connected with the common terminal 210 of the terminal assembly 200, and forms a lever structure, when the pressing latch 500 is in the initial state, the sliding block 510 on the pressing latch 500 is located at one side of the normally closed terminal 220, the pressing protrusion 511 on the sliding block 510 presses the elastic plate 410, at this time, under the acting force of the elastic plate 410, the moving plate 420 is tightly abutted against the common terminal 210 and the normally closed terminal 220, the normally closed terminal 220 is turned on, and the normally open terminal 230 is turned off; conversely, when the pressing device 500 is pressed, the pressing boss 511 on the sliding block 510 slides over the highest point of the elastic piece 410 and the common terminal 210, under the action of the elastic piece 410, the sliding block 510 slides to one side of the normally open terminal 230, and under the action of the lever principle, the moving piece 420 is abutted to the normally open terminal 230 and disconnected from the normally closed terminal 220, so as to realize the switching of the switch; when the pressing mechanism 500 is released, the sliding block 510 is reversely displaced by the spring 600 to slide across the common terminal 210, and the moving plate 420 is reversely swung under the action of the elastic sheet 410, so that the signal is switched again, and the sliding block 510 is reset under the action of the elastic sheet 410, so that the overall structure of the switch is simple and the design is reasonable.

In addition, in order to realize that the switch can simultaneously control the switching of the signals and make the signals independently controlled, the terminal assembly 200 of the embodiment is provided with two groups and is arranged on the base 100 side by side to form a double-loop switch, the moving plates 420 are also provided with two groups and respectively correspond to the two groups of terminal assemblies 200, meanwhile, the two groups of moving plates 420 are connected with the elastic plates 410 by adopting plastic coating to form the insulating piece 430, the two groups of moving plates 420 can be mutually insulated through the insulating piece 430 without interference, when the pressing device 500 presses, the moving plates 410 are acted, and the elastic plates 410 simultaneously drive the two groups of moving plates 420 to swing, so that the synchronous switching of a plurality of groups of signals is realized, the synchronism is good, and the two groups of signals can be independently controlled without interference.

Of course, more than two sets of terminal assemblies 200 can be provided according to practical situations, the number of the moving plates 420 is correspondingly set, and the set number of the moving plates 420 are all in plastic-coated connection with the elastic plates 410, so that the moving plates 420 can be mutually insulated without interference, and the synchronous operation of the elastic plates 410 can be realized to realize simultaneous switching and independent control among multiple sets of signals.

Referring to fig. 2 and 5, in the switch of the present embodiment, a side pressing manner is adopted, so that the pressing end of the pressing pin 500 needs to be disposed at one side of the housing 300, and in order to facilitate assembly of the pressing pin 500, a spring top plate 310 is disposed at one side of the housing 300, and the spring top plate 310 is opened, and the pressing pin 500 is inserted into the accommodating space, and then the spring top plate 310 is covered; meanwhile, a spring positioning column 311 is further arranged on the spring top plate 310, when the spring top plate 310 is inserted and covered by the pressing mechanism 500, one end of the spring 600 is sleeved on the spring positioning column 311, so that the spring 600 is positioned, and finally, the overall design of the switch is reasonable.

Referring to fig. 2 and 6, in the present embodiment, since the middle portion of the movable plate 420 needs to be kept in a connection state with the common terminal 210 and ensure stability thereof, a conversion groove 421 is provided in the middle portion of the movable plate 420, and a conversion protrusion 211 of the common terminal 210 is disposed at the conversion groove 421 to realize swinging connection between the common terminal 210 and the movable plate 420, and the connection between the movable plate 420 and the common terminal 210 is more stable and sensitive through the conversion groove 421 and the conversion protrusion 211, and swinging of the movable plate 420 is facilitated, so as to realize signal switching.

Referring to fig. 7 and 8, in order to quickly switch signals and make the switching more sensitive, in this embodiment, a sliding slot 520 is disposed at one end of the pressing portion 500 located in the accommodating space, a stopper 530 is disposed at an end of the sliding slot 520, the sliding block 510 slides in the sliding slot 520, and when the sliding block 510 slides, a pressing protrusion 511 on the sliding block 510 acts on the elastic sheet 410.

When the sliding block 510 is installed, the sliding block 510 is directly installed in the sliding groove 520, the sliding block 510 is blocked by the limiting block 530, the sliding block 510 is prevented from sliding out of the sliding groove 520, when the pressing block 500 is pressed, the pressing block 500 pushes the sliding block 510 to slide while pressing the elastic sheet 410, after the sliding block 510 slides across the common terminal, the movable sheet 420 swings due to the lever principle, the elastic sheet 410 reacts to the sliding block 510 to slide in the sliding groove 520, so that the signal is quickly switched, the sensitivity is better, and similarly, when the pressing block 500 is reset by the spring 600, the elastic sheet 410 also moves the sliding block 510 in the sliding groove 520, and finally, the signal is quickly switched.

When the spring 600 is installed, one end of the spring 600 can be installed in the spring groove of the pressing mechanism, the end part of the spring 600 is abutted to the end face of the spring groove, and the other end of the spring 600 is sleeved on the spring positioning column 311, so that the spring 600 is installed reasonably, the spring 600 can be prevented from being displaced, and the pressing and resetting of the pressing mechanism 500 are facilitated.

Referring to fig. 7 and 9, in order to ensure that the pressing latch 500 is smooth during pressing and resetting, in this embodiment, the inner wall of the housing 300 is provided with the pressing latch sliding groove 320, two sides of the pressing latch 500 at one end of the accommodating space are respectively provided with the pressing latch sliding blocks 540 corresponding to the pressing latch sliding groove 320, and the pressing latch 500 can be limited and controlled to be stable during pressing and resetting by inserting the pressing latch sliding blocks 540 into the pressing latch sliding groove 320, and can be conveniently positioned during mounting of the pressing latch 500, so that the mounting of the pressing latch 500 is facilitated and the running of the pressing latch 500 is smooth.

Referring to fig. 1 and 3, since the switch is widely used, it is required to waterproof the switch, and therefore, a sealing cap 700 is provided at one end of the press pin 500 extending to one side of the housing 300, and one end of the sealing cap 700 is sealed with the press pin 500, while the other end is heat-staked with the housing 300, and meanwhile, after the base 100 is covered with the housing 300, a first sealing groove 800 is formed, and a sealant is added in the first sealing groove 800, and after the spring top plate 310 is connected with the housing 300, a second sealing groove 900 is formed, and a sealant is added in the second sealing groove 900.

Specifically, sealant is added into the first seal groove 800 and the second seal groove 900 respectively, the housing 300 and the base 100 are sealed by the sealant, the spring top plate 310 and the housing 300 are sealed, and meanwhile, the pressing mechanism 500 and the housing 300 are sealed by the sealing cap 700, and finally, the sealing design of the accommodating space is realized, so that the switch achieves the waterproof function.

Referring to fig. 3, in order to improve the sealing effect, the terminal assembly 200 of the present embodiment is molded on the base 100 by a molding process, and in addition, one end of the terminal assembly 200 is located in the accommodating space, and the other end extends out of the base 100.

The common terminal 210 is arranged between the normally closed terminal 220 and the normally open terminal 230, and one end of the common terminal 210, which is abutted against the conversion groove 421 of the moving plate 420, is a conversion convex point 211, so that the connection between the conversion convex point 211 of the common terminal 210 and the conversion groove 421 of the moving plate 420 can be facilitated, the connection is stable, and meanwhile, a fulcrum is formed between the conversion convex point 211 and the conversion groove 421, so that the moving plate 420 swings, and the switching of signals is realized.

Finally, since the switch in the present embodiment is designed in a small structure, the length-width-height dimension of the housing 300 is set to 8mm by 8mm, so as to facilitate the application of the switch to various devices.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art can practice the invention smoothly as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.

Claims (10)

1. A miniature dual-circuit sealed switch, comprising:

the base is provided with two groups of terminal assemblies, and the terminal assemblies comprise a common terminal, a normally closed terminal and a normally open terminal;

the shell is covered with the base to form a containing space, and a spring top plate is arranged on the shell;

the conversion group is arranged in the accommodating space and comprises elastic sheets and moving sheets, the number of the moving sheets is the same as that of the terminal assemblies and corresponds to that of the terminal assemblies one by one, the elastic sheets are bent and are in plastic-covered connection with the moving sheets with the set number to form an insulating piece, the middle part of each moving sheet is connected with a common terminal, and two ends of each moving sheet are respectively in switching contact with a normally closed terminal and a normally open terminal;

the pressing device comprises a pressing part, a pressing lug and a spring plate, wherein one end of the pressing part is arranged in the accommodating space, the other end of the pressing part penetrates through the side wall of one side of the shell and extends outwards, a sliding block is arranged on the pressing part, and the sliding block is provided with a pressing lug which is abutted with the spring plate;

the spring is arranged in the accommodating space, and two ends of the spring are respectively abutted against the pressing mechanism and the spring top plate;

the movable sheets and the terminal assembly are arranged into a lever structure, and then the pressing mechanism is pressed, so that the pressing convex blocks of the sliding blocks act on the elastic sheets, and therefore the set number of movable sheets swing at the same time, and the switching of a plurality of groups of signals is realized.

2. The miniature dual-circuit sealed switch of claim 1, wherein: the spring top plate is arranged on one side of the shell, a spring positioning column is arranged on the spring top plate, and one end of the spring is sleeved on the spring positioning column.

3. The miniature dual-circuit sealed switch of claim 1, wherein: the middle part of the moving plate is provided with a conversion groove, and the conversion convex points of the common terminal are abutted in the conversion groove of the moving plate, so that the swing of the moving plate is realized.

4. The miniature dual-circuit sealed switch of claim 1, wherein: the sincere one end that is located the accommodation space that presses is equipped with the sliding tray to be equipped with the stopper in the tip of sliding tray, the sliding block then slides in the sliding tray, and the sliding block is when sliding, the last pressing lug of sliding block can act on the shell fragment.

5. The miniature dual-circuit sealed switch of claim 1, wherein: the inner wall of the shell is provided with a pressing sliding groove, the pressing sliding block corresponding to the pressing sliding groove is arranged at one end of the holding space on two sides of the pressing sliding groove.

6. The miniature dual-circuit sealed switch of claim 1, wherein: one end of the pressing part extending outwards from one side of the shell is provided with a sealing cap, one end of the sealing cap is sealed with the pressing part clamp, and the other end of the sealing cap is sealed with the shell through hot riveting.

7. The miniature dual-circuit sealed switch of claim 1, wherein: the terminal assembly is coated on the base by adopting a plastic coating process, one end of the terminal assembly is arranged in the accommodating space, the other end of the terminal assembly extends to the outside of the base, the common terminal is arranged between the normally closed terminal and the normally open terminal, and one end of the common terminal, which is abutted against the moving plate conversion groove, is a conversion convex point.

8. The miniature dual-circuit sealed switch of claim 1, wherein: after the base is covered with the shell, a first sealing groove is formed, and sealing glue is added in the first sealing groove.

9. The miniature dual-circuit sealed switch of claim 1, wherein: after the spring top plate is connected with the shell, a second sealing groove is formed, and sealing glue is added in the second sealing groove.

10. The miniature dual-circuit sealed switch of claim 1, wherein: the length of the shell is 8mm, the width is 8mm, and the height is 8mm.