CN220420465U - Micro-gap switch with locking function - Google Patents

Abstract

The utility model provides a micro-gap switch with locking function, includes casing, bonnet, first pin, second pin, break-make subassembly and locking subassembly, the bonnet with the casing splices mutually, and break-make subassembly includes button, movable contact piece, and shell fragment, and movable contact piece is equipped with from a left side to the right side in proper order and supports pressure portion, fretwork portion, and the button supports the cooperation with pressure portion through fretwork portion respectively with contact portion and second pin, and locking subassembly includes connecting piece, and lock colludes, and connecting piece detachable connects in the casing, and the one end and the connecting piece fixed fit of lock collude still are formed with the orbit groove on the position that the left surface of button is located the casing, are equipped with the locking piece in the orbit groove, and the other end of lock collude slides in the orbit groove to break away from or lock with the locking piece when micro-gap switch switching. The utility model has simple structure, small occupied installation space, locking function and wide application range.

Description

Micro-gap switch with locking function

Technical Field

The utility model relates to a power switch, in particular to a micro switch with a locking function.

Background

The micro switch is a common component on the household appliance, and generally comprises two or more conductive sheets with wiring terminals, a contact bridge with a reset function is arranged between the conductive sheets, the micro switch can be switched on/off when pressed through swinging and resetting of the contact bridge, and a button for driving the contact bridge to swing is further arranged on the micro switch. The conventional micro-switch realizes a self-locking function by externally installing the locking device, so that the required installation space is larger, the micro-switch cannot be applied to products with narrow installation space, and the application range is small.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the micro switch which has the advantages of simple structure, wide application range and locking function.

The utility model solves the technical problems by adopting the technical scheme that the micro switch with the locking function comprises a shell, a cover, a first pin, a second pin, an on-off assembly and a locking assembly, wherein the first pin, the second pin, the on-off assembly and the locking assembly are arranged on the shell, the cover is spliced with the shell, the on-off assembly comprises a button, a movable contact piece and an elastic piece, the movable contact piece is sequentially provided with a pressing part, a hollowed-out part and a contact part from left to right, the button is in abutting fit with the pressing part, two ends of the elastic piece are respectively in abutting fit with the contact part and the second pin through the hollowed-out part, the locking assembly comprises a connecting piece and a locking hook, the connecting piece is detachably connected in the shell, one end of the locking hook is fixedly matched with the connecting piece, a track groove is formed in a position of the left side surface of the button, a locking block is arranged in the track groove, and the other end of the locking hook slides in the track groove and is separated from the micro switch or locked when the micro switch is opened.

The technical scheme has the advantages that: when the button is pressed down, the lock hook slides along the track groove, the button drives the pressing part to swing downwards, so that elastic deformation occurs to the elastic piece which is in supporting fit with the contact part and the second pin, the lock hook is not locked with the locking piece, after a certain stroke is pressed down, the elastic piece enables the contact part to swing rapidly in the direction of the first pin downwards, so that the contact part is contacted with the first pin, the lock hook and the locking piece form locking at the same time, at the moment, the button can be kept in a pressed state, after the button is pressed down again, the lock hook is separated from the locking piece, the button is reset under the action of the elastic piece, the lock hook slides in the track groove until the initial position, so that the functions of automatic locking and repeated pressing unlocking are achieved, the whole structure is simple, the lock hook and the connecting piece are detachably connected in the shell, on one hand, on the other hand, the locking action of the locking assembly and the button is matched in the shell, the occupation space of the installation of the micro switch is more reasonable, and the application range is wider.

Further, the connecting piece comprises a fixing piece main body, the lock hook is fixed on the fixing piece main body, a limiting elastic piece main body which is bent towards the lock hook direction is further arranged on the fixing piece main body, and the limiting elastic piece main body is in supporting contact fit with the rod part of the lock hook.

The technical scheme has the advantages that: during installation, the fixing piece main body is aligned with the mounting groove on the shell and can be formed into a mounting and fixing mode by forcefully inserting, the mounting mode is simple, the limiting elastic piece main body is arranged, the elastic supporting limit is formed for the lock hook, the lock hook slides smoothly in the track groove of the button, the operation hand feeling is good, and the reasonable locking and releasing are ensured.

Further, a guide block is further arranged right above the locking block in the track groove, the track groove forms a first guide groove section, a second guide groove section and a third guide groove section through the locking block, the locking block is of a heart-shaped structure, and the lower end of the guide block is of a V-shaped structure.

The technical scheme has the advantages that: the track groove is divided into three guide groove sections through the distribution design of the locking block and the guide block, so that the locking hook is stably locked and separated, and the locking block and the guide block with special shapes are adopted, so that the sliding of the locking hook is smoother, and the operation hand feeling is better.

Further, the first guide groove section is connected with the second guide groove section through a first transition surface, the third guide groove section is concave relative to the second guide groove section and is connected with the first guide groove section through a second transition surface, the first transition surface and the second transition surface are inclined surfaces or cambered surfaces which are outwards arranged, and the third guide groove section is located at the position between the locking blocks and the guide blocks and is further provided with a protruding block.

The technical scheme has the advantages that: when the button is pressed, the lock hook slides in the first guide groove section and can not directly move into the third guide groove section through the arrangement of the second transition surface, when the lock hook moves into the second guide groove section and moves up to the highest point of the second guide groove section along with the pressing of the button to the maximum stroke, after the acting force is finished, the button can move up for a certain stroke, the lock hook can relatively move down in the second guide groove section, the lock hook can not slide back into the first guide groove section through the arrangement of the first transition surface, the lock block can accurately form locking with the lock hook, when the lock hook is separated, the button is pressed again, the third guide groove section is arranged into an indent structure, and therefore the lock hook can not move into the second guide groove section and slide in the third guide groove section along with the pressing of the button, and after the third guide groove section slides for a certain distance and after the lock hook slides up with the lock block, even if the button is loosened, the lock hook can not separate from the lock hook again along with the lock hook to form locking surface, and the lock hook can more stably move to the second transition position along with the reset surface.

Further, the shell fragment is arcuation structure, and left end wall face center department is equipped with first joint piece, is equipped with first joint groove on the second pin, first joint groove with first joint piece cooperatees, arcuation structure the right end wall face center department of shell fragment still is equipped with the second joint groove, the right side internal wall face center department slope of fretwork portion is connected with the second joint piece, the second joint groove with the second joint piece cooperatees.

The technical scheme has the advantages that: the elastic sheet is arranged into an arc-shaped structure, so that the left end and the right end of the elastic sheet are larger in reaction force generated by the contact action of the movable contact sheet and the second pin, and the purpose of stably installing the elastic sheet is achieved through the cooperation of the first clamping groove and the first clamping block and the cooperation of the second clamping groove and the second clamping block, so that the swing and the recovery of the movable contact sheet are more crisp and beneficial, and the service life of the switch is long.

Further, the break-make subassembly still includes the stroke frame, the right end wall face center department of stroke frame is equipped with the third joint piece, be equipped with the third joint groove on the second pin, the third joint piece with the third joint groove cooperatees, the left end of stroke frame with button interference fit, and center department are equipped with the stroke groove, the left side internal face center department of fretwork portion be equipped with from top to bottom spacing remove in the stroke piece in the stroke groove.

The technical scheme has the advantages that: through setting up the stroke frame, and the right-hand member of stroke frame forms the position location through the cooperation in third joint piece, third joint groove, and movable contact piece is under the effect of button and shell fragment, and the swing of its left end formation upper and lower position is at the swing in-process, and spacing removal about the stroke piece in the fretwork portion is in the stroke inslot to reach the purpose of limiting the brake contact piece left end upper and lower swing range, make movable contact piece's use safer.

Further, the right side inner wall surface of the hollowed-out part is located at two sides of the second clamping block and is provided with a first positioning block, the extension length of the first positioning block is smaller than that of the second clamping block, the left side inner wall surface of the hollowed-out part is located at two sides of the travel block and is provided with a second positioning block, and the extension length of the second positioning block is smaller than that of the travel block.

The technical scheme has the advantages that: the extension length of first locating piece is less than the extension length of second joint piece, first locating piece and second joint piece all are connected with the shell fragment promptly, can guarantee the accurate location of shell fragment and fixed, in micro-gap switch's the in-process of opening and shutting, the work that the shell fragment can be stable, the extension length of second locating piece is less than the extension length of stroke piece, second locating piece and stroke piece all are connected with the stroke frame promptly, can guarantee the accurate location and the fixed of stroke frame, the upper and lower removal of movable contact piece is also more steady, the work that the movable contact piece can be stable at micro-gap switch's the in-process of opening and shutting.

Furthermore, the shell is also inserted with an inserting sheet and an arc-extinguishing magnet, the inserting sheet is relatively positioned between the contact part and the inner wall of the upper side of the shell, and the arc-extinguishing magnet is relatively positioned between the contact part and the first pin.

The technical scheme has the advantages that: the setting of inserted sheet for the movable contact piece can not directly contact with the casing internal face after the back that resets, consequently can not take place the adhesion phenomenon, and arc extinguishing magnet's setting can eliminate the movable contact piece fast and the electric arc of drawing that produces when contacting with first pin and inserted sheet, and the product is used safelyr.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a portion of the structure of the present utility model (excluding the cover);

FIG. 3 is a schematic diagram of a button structure according to the present utility model;

FIG. 4 is a schematic view of a locking assembly of the present utility model;

FIG. 5 is a schematic diagram of a movable contact structure according to the present utility model;

FIG. 6 is a schematic diagram of a spring plate structure according to the present utility model;

FIG. 7 is a schematic diagram of a second lead structure according to the present utility model;

fig. 8 is a schematic view of the stroke frame structure of the present utility model.

In the figure: the device comprises a 1-shell, a 2-shell cover, a 3-first pin, a 4-second pin, a 5-button, a 6-movable contact piece, a 7-elastic piece, an 8-pressing part, a 9-hollowed part, a 10-contact part, an 11-connecting piece, a 12-locking hook, a 13-locking block, a 14-fixing piece main body, a 15-limiting elastic piece main body, a 16-guide block, a 17-first guide groove section, a 18-second guide groove section, a 19-third guide groove section, a 20-first transition surface, a 21-second transition surface, a 22-convex block, a 23-first clamping block, a 24-first clamping groove, a 25-second clamping groove, a 26-second clamping block, a 27-stroke frame, a 28-third clamping block, a 29-third clamping groove, a 30-stroke groove, a 31-stroke block, a 32-first positioning block, a 33-second positioning block, a 34-inserting piece and a 35-arc-extinguishing magnet.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model and/or the technical solutions in the prior art, the following description will explain specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort. The term "azimuth" refers to a relative positional relationship between the members, not to an absolute positional relationship.

Referring to fig. 1 to 8, a micro switch with locking function includes a housing 1, a cover 2, a first pin 3, a second pin 4, an on-off assembly and a locking assembly mounted on the housing 1, wherein the cover 2 is spliced with the housing 1, the on-off assembly includes a button 5, a movable contact 6 and a spring 7, the button 5 is mounted on the housing 1 and can move up and down, the movable contact 6 is provided with a pressing portion 8, a hollow portion 9 and a contact portion 10 from left to right in sequence, the bottom of the button 5 is in abutting fit with the pressing portion 8, two ends of the spring 7 are respectively in abutting fit with the contact portion 10 and the second pin 4 through the hollow portion 9, the locking assembly includes a connecting piece 11 and a locking hook 12, the connecting piece 11 is detachably connected in the housing 1, one end of the locking hook 12 is fixedly matched with the connecting piece 11, a track groove is formed in a portion of the left side surface of the button 5 located in the housing 1, a locking block 13 is arranged in the track groove, and the other end of the locking hook 12 slides in the track groove and is separated from or locked with the locking block 13 when the micro switch is opened.

Principle of action: when the button 5 is pressed down, the lock hook 12 slides along the track groove, meanwhile, the button 5 drives the pressing part 8 to swing downwards, the elastic piece 7 which is in supporting fit with the contact part 10 and the second pin 4 is elastically deformed, at the moment, the lock hook 12 is not locked with the locking piece 13, after a certain stroke is pressed down, the elastic piece 7 enables the contact part 10 to swing rapidly towards the first pin 3 downwards, the contact part 10 is enabled to be in contact with the first pin 3, meanwhile, the lock hook 12 and the locking piece 13 form locking, at the moment, the button 5 is still kept in a pressed state, after the button 5 is pressed down again, the lock hook 12 is enabled to be separated from the locking piece 13, the button 5 is reset under the action of the elastic piece 7, the lock hook 12 slides in the track groove until the initial position, thereby realizing the functions of automatic locking and re-pressing unlocking, the whole structure is also simple, and the lock hook 12 and the connecting piece 11 are detachably connected in the casing 1, on the one hand, the installation and maintenance are convenient, the locking assembly and the locking action of the button 5 are matched in the casing 1, the micro-movement range of the micro-movement switch is also reasonable, and the application range is wide.

In this embodiment, the connecting piece 11 includes a fixing piece main body 14, during installation, the fixing piece main body 14 is aligned to a mounting groove on the casing 1 to form a mounting and fixing manner, a mounting hole is formed at a lower position of the fixing piece main body 14, a lower hook portion of the lock hook 12 is hooked on the fixing piece main body 14 through matching with the mounting hole, the lock hook 12 is simple to install, the fixing position is reasonable, a limiting elastic piece main body 15 bending towards the lock hook 12 direction is further arranged on the fixing piece main body 14, the limiting elastic piece main body 15 is in propping contact with a rod portion of the lock hook 12, more specifically, the limiting elastic piece main body 15 is integrally formed on the fixing piece main body 14 after a cutting and bending procedure, and the setting of the limiting elastic piece main body 15 is that the lock hook 12 is fixed on the fixing piece main body 14, so that the lock hook 12 slides smoothly in a track groove of the button 5, the operation hand feeling is good, and the reasonable locking and releasing are ensured.

In this embodiment, a guide block 16 is further disposed right above the locking block 13 in the track groove, the track groove forms a first guide groove section 17, a second guide groove section 18 and a third guide groove section 19 through the locking block 13 and the guide block 16, the track groove is separated into three guide groove sections through the distribution design of the locking block 13 and the guide block 16, so that the locking hook 12 is stably locked and separated, more specifically, the locking hook 12 can sequentially move along the first guide groove section 17 and the second guide groove section 18, and after the third guide groove section 19 realizes locking with the locking block 13, the locking hook 12 slides along the third guide groove section 19 and is separated from the locking block 13 under the action of the guide block after the button 5 is pressed again, the lower end of the guide block 16 is in a heart-shaped structure, and the locking block 13 and the guide block 16 in a special shape are adopted, so that the sliding of the locking hook 12 is smoother and the operation feel better.

In this embodiment, the first guide groove section 17 is connected with the second guide groove section 18 by the first transition surface 20, the third guide groove section 19 is concave relative to the second guide groove section 18 and is connected with the first guide groove section 17 by the second transition surface 21, the first transition surface 20 and the second transition surface 21 are both inclined surfaces or cambered surfaces which are arranged outwards, more specifically, when the button 5 is pressed, the lock hook 12 slides along the first guide groove section 17 and cannot move into the third guide groove section 19 directly, when the lock hook 12 moves into the second guide groove section 18 and moves up to the highest point of the second guide groove section 18 along with the pressing of the button 5 to the maximum stroke, after the acting force is finished, the button 5 moves up by a certain stroke, and the lock hook 12 moves down relatively in the second guide groove section 18, through the arrangement of the first transition surface 20, so that the lock hook 12 cannot slide back into the first guide groove section 17, and the third guide groove section 19 can move to the third guide groove section 19 accurately, and cannot slide into the third guide groove section 19, and can slide into the third guide groove section 19, and the third guide groove section 19 can be accurately formed.

In this example, a bump 22 is further formed at the position of the third guide groove section 19 between the locking block 13 and the guide block 16, and by the arrangement of the bump 22, after the lock hook 12 slides a certain distance in the third guide groove section 19 and is separated from the locking block 13, even if the button is released, the lock hook 12 will not lock with the locking block 13 again, and along with the reset of the button 5, the movement of the second transition surface 21 to the initial position is more reasonable and stable, and the use is safer.

In this embodiment, the elastic sheet 7 is in an arc structure, more specifically, the curvature of the elastic sheet 7 in the arc structure is firstly reduced and then increased from one end to the other end, that is, the elastic sheet 7 is firstly gradually slowed down and then gradually steeped from one end to the other end, the arc at the highest point is the slowest, the left end and the right end are the steepest, so that the reaction force generated by the contact action of the left end and the right end of the elastic sheet 7 with the movable contact 6 and the second pin 4 is larger, the center of the left end wall is provided with a first clamping block 23, the second pin 4 is provided with a first clamping groove 24, the center of the right end wall of the elastic sheet 7 in the arc structure is also provided with a second clamping groove 25, the center of the right inner wall of the hollowed-out part 9 is obliquely connected with a second clamping block 26, and the second clamping groove 25 is matched with the second clamping block 26 in a chute, so that the contact between the first clamping groove 24 and the first clamping block 23 and the second clamping block 23 are matched, and the second clamping block 26 are matched with each other, the contact switch is also provided with a larger rebound force due to the fact that the contact between the movable contact and the second clamping block 26 is more stable, the service life of the contact is prolonged,

in this embodiment, the on-off assembly further includes a travel frame 27, a third clamping block 28 is disposed at the center of the right end wall surface of the travel frame 27, a third clamping groove 29 is disposed on the second pin 4, the third clamping block 28 is matched with the third clamping groove 29, the left end of the travel frame 27 is in interference fit with the button 5, a travel groove 30 is disposed at the center, a travel block 31 which moves in the travel groove 30 in an up-down limiting manner is disposed at the center of the left inner wall surface of the hollow portion 9, and because in the stressing process of the travel frame 27, the right end and the second pin 4 form an interference limit, the right end of the travel frame 27 can position the travel frame 27 through the cooperation of the third clamping block 28 and the third clamping groove 29, the cooperation mode is simple and reasonable, meanwhile, the left end of the movable contact 6 forms an up-down swing under the action of the button 5 and the spring 7, in the swing process, the travel block 31 in the hollow portion 9 moves in the travel groove 30 in an up-down limiting manner, thereby achieving the purpose of limiting the left end of the upper-down swing amplitude of the movable contact 6, and further achieving the purpose of using the movable contact 6.

In this embodiment, the right inner wall surface of the hollowed portion 9 is located at two sides of the second clamping block 26 and is provided with the first positioning block 32, the extending length of the first positioning block 32 is smaller than that of the second clamping block 26, that is, the first positioning block 32 and the second clamping block 26 are both connected with the elastic sheet 7, accurate positioning and fixing of the elastic sheet 7 can be ensured, in the opening and closing process of the micro switch, the elastic sheet 7 can work stably, the left inner wall surface of the hollowed portion 9 is located at two sides of the stroke block 31 and is provided with the second positioning block 33, the extending length of the second positioning block 33 is smaller than that of the stroke block 31, that is, the extending length of the second positioning block 33 and the stroke block 31 are both connected with the stroke frame 27, that can ensure accurate positioning and fixing of the stroke frame 27, the up-and-down movement of the movable contact sheet 6 is also more stable, and in the opening and closing process of the micro switch, the movable contact sheet 6 can work stably.

In this example, insert 34 and arc extinguishing magnet 35 are still inserted on casing 1, insert 34 is located between contact 10, casing 1 upside inner wall relatively, arc extinguishing magnet 35 is located between contact 10, first pin 3 relatively, insert 34's setting for movable contact 6 can not directly contact with casing 1 inner wall surface after reset, consequently can not take place the adhesion phenomenon, arc extinguishing magnet 35's setting, can eliminate the movable contact 6 fast and produce the electricity when contacting with first pin 3 and insert 34 and draw the arc, and the product is used safelyr.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (8)

1. The micro switch with the locking function is characterized by comprising a shell (1), a shell cover (2), a first pin (3), a second pin (4), an on-off assembly and a locking assembly, wherein the first pin (3), the second pin (4), the on-off assembly and the locking assembly are arranged on the shell (1), the shell cover (2) is spliced with the shell (1), the on-off assembly comprises a button (5), a movable contact piece (6) and an elastic sheet (7), the movable contact piece (6) is sequentially provided with a pressing part (8), a hollowed-out part (9) and a contact part (10) from left to right, the button (5) is in abutting fit with the pressing part (8), two ends of the elastic sheet (7) are in abutting fit with the contact part (10) and the second pin (4) respectively through the hollowed-out part (9), the locking assembly comprises a connecting piece (11) and a locking hook (12), one end of the locking hook (12) is detachably connected in the shell (1), one end of the locking hook (12) is fixedly provided with the connecting piece (11), the other end of the locking hook (11) is fixedly provided with the button (5), the other end of the locking hook is provided with a track (13), and the other end of the locking assembly is provided with a track (13) in the track And is separated from or locked with the locking block (13) when the micro switch is opened and closed.

2. The micro switch with the locking function according to claim 1, wherein the connecting piece (11) comprises a fixing piece main body (14), the locking hook (12) is hooked and fixed on the fixing piece main body (14), a limiting elastic piece main body (15) bent towards the locking hook (12) is further arranged on the fixing piece main body (14), and the limiting elastic piece main body (15) is in propping contact fit with the rod part of the locking hook (12).

3. The micro switch with the locking function according to claim 1, wherein a guide block (16) is further arranged right above the locking block (13) in the track groove, a first guide groove section (17), a second guide groove section (18) and a third guide groove section (19) are formed by the locking block (13) and the guide block (16), the locking block (13) is of a heart-shaped structure, and the lower end of the guide block (16) is of a V-shaped structure.

4. A micro switch with locking function according to claim 3, wherein the first guide groove section (17) and the second guide groove section (18) are connected by a first transition surface (20), the third guide groove section (19) is concave relative to the second guide groove section (18) and is connected with the first guide groove section (17) by a second transition surface (21), the first transition surface (20) and the second transition surface (21) are inclined surfaces or cambered surfaces which are arranged outwards, and a bump (22) is formed at the position of the third guide groove section (19) between the locking block (13) and the guide block (16).

5. The micro switch with the locking function according to claim 1, wherein the elastic piece (7) is of an arc-shaped structure, a first clamping block (23) is arranged at the center of the left end wall surface, a first clamping groove (24) is formed in the second pin (4), the first clamping groove (24) is matched with the first clamping block (23), a second clamping groove (25) is further formed at the center of the right end wall surface of the elastic piece (7) of the arc-shaped structure, a second clamping block (26) is obliquely connected at the center of the right side inner wall surface of the hollowed-out portion (9), and the second clamping groove (25) is matched with the second clamping block (26).

6. The micro switch with locking function according to claim 5, wherein the on-off assembly further comprises a stroke frame (27), a third clamping block (28) is arranged at the center of the right end wall surface of the stroke frame (27), a third clamping groove (29) is arranged on the second pin (4), the third clamping block (28) is matched with the third clamping groove (29), the left end of the stroke frame (27) is in interference fit with the button (5), a stroke groove (30) is arranged at the center of the left end wall surface of the hollowed-out part (9), and a stroke block (31) which is limited to move up and down in the stroke groove (30) is arranged at the center of the left side inner wall surface of the hollowed-out part.

7. The micro switch with the locking function according to claim 6, wherein a first positioning block (32) is arranged at the position, located at the two sides of the second clamping block (26), of the right inner wall surface of the hollowed-out portion (9), the extending length of the first positioning block (32) is smaller than that of the second clamping block (26), a second positioning block (33) is arranged at the position, located at the two sides of the stroke block (31), of the left inner wall surface of the hollowed-out portion (9), and the extending length of the second positioning block (33) is smaller than that of the stroke block (31).

8. A microswitch with locking function according to claim 1, wherein the shell (1) is further provided with an inserting sheet (34) and an arc extinguishing magnet (35), the inserting sheet (34) is relatively positioned between the contact part (10) and the inner wall of the upper side of the shell (1), and the arc extinguishing magnet (35) is relatively positioned between the contact part (10) and the first pin (3).