CN2515786Y

CN2515786Y - Piano-key switch

Info

Publication number: CN2515786Y
Application number: CN 01254236
Authority: CN
Inventors: 张建江
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-15
Filing date: 2001-10-15
Publication date: 2002-10-09
Anticipated expiration: 2011-10-15

Abstract

The utility model relates to the technical field of a piano keyboard switch, designed for achieving the functions of linkage and interlock. The switch comprises a pedestal, a cover board, push rods, offsetting springs, moving contacts and fixed contacts; wherein a plurality of installation parallel-standing hollow cavities are arranged in sequence in the pedestal; the push rod is arranged in the installation cavity; the offsetting springs are arranged between the push rods and the pedestal; the fixed contacts and the moving contacts are connected with connection pins at the lower parts of the installation cavities; and the moving contact is cooperative with the pushing part at the lower part of the push rod. The utility model is characterized in that linkage rods are arranged among the plurality of push rods; a bayonet on each linkage rod is cooperative with a lock groove on each push rod; and a linkage spring is arranged between the linkage rod and the pedestal. The utility model which has the advantages of multiple functions, simple structure and easy production is applicable for promotion and application in an electrical apparatus.

Description

Keyboard switch

Technical field

The utility model relates to a kind of switching technique field, especially relates to the technical field of keyboard switch.

Background technology

Along with improving constantly of living standards of the people, people will be widely applied to this electric component of keyboard switch on household electrical appliance, keyboard switch commonly used now has a lot of structural designs, lever is arranged, moving seesaw-type etc., but commonly used is to control separately separately, can not adapt to the specific (special) requirements of some concrete use occasion, as on range hood, using a kind of keyboard switch, it requires a plurality of keys to link, require adjacent two keys to lock mutually simultaneously, say exactly to control two groups of loads can not be simultaneously in running order, this occasion is also a lot, as electric fan or the like.Chinese patent also has some patent reports about keyboard switch, as the patent No. is " piano key switch " of 01102173.X, " a kind of keyboard switch " of patent No. 99235840.X, but they mainly concentrate on some electric property improvement aspects, as current capacity can increase, easy-to-connect, for can link and the keyboard switch of locking mutually to carry out the technology report also few.

Summary of the invention

Primary technical problem to be solved in the utility model is that a kind of simple in structure, keyboard switch that can make the interlock of a plurality of keys is provided at prior art.

Another one technical problem to be solved in the utility model is to be further improved in front the basis, provide a kind of simple in structure, can make a plurality of key interlocks, simultaneously adjacent two keys are locked mutually, controlling load separately can not simultaneously in running order keyboard switch.

The technical scheme that the above-mentioned primary technical problem that solves the utility model adopts is: this kind keyboard switch, it includes base, cover plate, push rod, back-moving spring, movable contact spring, static contact, open a plurality of installation cavitys of existing side by side in the base successively, install in the cavity and be equipped with push rod, between push rod and the base back-moving spring is housed, in installation cavity bottom static contact and the movable contact spring that is connected with leg arranged simultaneously, movable contact spring partly cooperates with the promotion of push rod bottom, it is characterized in that between a plurality of push rods, gangbar being installed, on the gangbar separately bayonet socket cooperate with lock slots on the push rod, the interlock spring is arranged between gangbar and the base.

The utility model solves the technical scheme that above-mentioned another technical problem adopted: on the basis of technique scheme, be equipped with clamping block between adjacent push rod, push rod has the positioning port that cooperates with the clamping block end simultaneously.Compared with prior art, advantage of the present utility model is: 1, multifunctional characteristics, be fit to some and have the occasion of specific (special) requirements, make things convenient for the user, the interlock function is arranged, as long as by next key as it, can make on other key bullet, interlock function is arranged again, and adjacent key can not be pressed simultaneously, and just controlling load separately can be simultaneously not in running order yet; 2, simple in structure, the compact and reasonable of interlock and interlocking portions, production and assembly easily, the working stability performance is good; 3, switch flexible overturning is not easy to block malfunctioning, and serviceability is good.

Description of drawings

Fig. 1 keyboard switch front view;

Fig. 2 keyboard switch left view;

Fig. 3 keyboard switch right view;

Fig. 4 keyboard switch cut-away view;

Fig. 5 keyboard switch partial sectional view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Anticipate as shown in the figure, this kind keyboard switch, it includes base 4, cover plate 11,

push rod

1,2,3, back-moving spring 6, movable contact spring, static contact, gangbar 8, interlock spring 10, clamping block 7 waits each parts, base 4 is roughly rectangular shape, the employing plastic shaping forms, open a plurality of installation cavitys 43 of existing side by side in the base 4 successively, it can be 4,5, decide as required, here we adopt 4 cavity is installed, each is installed in the cavity and is equipped with

push rod

1,2,3, push rod also adopts working of plastics to make, and base top has evagination part 41, and push rod top is just stretched out male part and divided the outside to remove to be connected and fixed key, simultaneously top is opened draw-in groove and is blocked sheet metal and do spring base, spring localization part 44 is arranged above the base evagination part 41 accordingly, and back-moving spring 6 just is enclosed within on the push rod, and withstands between top spring base and the spring localization part, part is installed than being easier to like this, and spring is not easy unexpected ejection.In installation cavity bottom static contact and the movable contact spring that is connected with leg arranged, movable contact spring just is shelved in the screens of leg inner end, can knee-action, when moving instantly, just contact, be in the switch conduction state with static contact, when last action, just throw off with static contact, switch is in off-state, and it partly cooperates with the promotion of push rod bottom.In order to improve the switch flexible overturning, prevent to block malfunctioning phenomenon, promoting part is to adopt the pulley base structure, its pulley is at the movable contact spring upper surface, whole pulley base 9 is to be enclosed within the installing hole of push rod bottom, its sidepiece pivot pin 92 is positioned on the locating notch that cavity sidewalls is installed, wheel seat is opened little spring hole 91 accordingly, the interpolation little spring, the little spring other end just withstands on the cover plate 11, when the push rod knee-action, just can drive pulley is that fixing point slides up and down with the pivot pin like this, thus compressing movable contact spring knee-action.Between above-mentioned a plurality of push rods, gangbar 8 is installed also, on the gangbar separately bayonet socket cooperate with lock slots on the

push rod

1,2,3, lock slots adopts the teeth groove form here.In order to fix this gangbar easily, open slot in evagination part 41 sides of base, gangbar 8 is fixed on the base 4 overcoat over cap 5 by the sidewall formula of inserting.Over cap has the hole clipping 51 that partly cooperates with the base evagination, and base evagination part bottom has the bayonet socket 42 that inserts for over cap, fixes over cap so easily, and these small structure make things convenient for the keyboard switch production and assembly.Interlock spring 10 is arranged between gangbar and base, we drive the holder of fixing the interlock spring at the sidewall that gangbar 8 is inserted in base evagination part 41 slots, base evagination part 41 sidewalls have shallow location notch accordingly, and interlock spring 10 just is supported between spring base and the shallow location notch.In order to improve the push rod job stability, prevent its knee-action skew, we have the location notch that cooperates with positioning strip 32 on the push rod in convex portion 41 inboards outside.Also be equipped with clamping block 7 between adjacent push rod, push rod has the positioning port 21,31 that cooperates with the clamping block end simultaneously, opens shallow resettlement groove and locate arrangement clamping block 7 between the installation cavity.

Its operation principle is as follows, with Fig. 4,5 is example, under No. 3 push rods on time, promote gangbar and clamping block and move to the left, make interlock spring pressurized produce thrust to the right, when pressing certain distance, gangbar just moves right under the effect of interlock spring thrust, its bayonet socket just is stuck in the lock slots of push rod, No. 3 push rods is pinned, at this moment moving contact and the fixed contact closure in this push rod position.When by No. 2 push rods, push rod drives gangbar once more and is moved to the left, make in the lock slots on gangbar upper latch notch and No. 3 push rods, No. 3 push rods just eject under action of reset spring and reset, moving contact and fixed contact in this push rod position are disconnected, and make interlock spring pressurized produce thrust to the right, when continuing again to press certain distance down, No. 2 push rods promote clamping block and move right, and make push rod continue to move down, if this moment, No. 3 push rods were not replied as yet, clamping block will withstand on this push rod rather than its positioning port on one's body, just can not move to right, No. 2 push rods also just withstand on the clamping block and can not move down, and make moving contact in this push rod position and the fixed contact can not be closed; Otherwise when not replying by No. 2 push rods under No. 3 push rods, the contact in No. 3 push rod positions also can't be closed, thereby guarantee the two groups of contacts closure simultaneously adjacent push rod position in; On time, gangbar moves right under the interlock spring action under No. 2 push rods continue, and is stuck in the lock slots of No. 2 push rods, and No. 2 push rod lockings make moving contact and the fixed contact closure in the push rod position No. 2.When No. 1 push rod is pressed, push rod drives gangbar again and is moved to the left, make interlock spring pressurized produce thrust to the right, when pressing certain distance, the gangbar bayonet socket just withdraws from the lock slots of No. 2 push rods and No. 3 push rods, and No. 2 push rods and No. 3 push rods are resetted, corresponding contact disconnects, remove downwards by power this moment, and No. 1 push rod resets under the effect of back-moving spring, thereby realize multikey interlock and interlock function.

Claims

1, a kind of keyboard switch, it includes base (4), cover plate (11), push rod (1,2,3), back-moving spring (6), movable contact spring, static contact, open a plurality of installation cavitys (43) of existing side by side in the base successively, install in the cavity and be equipped with push rod (1,2,3), back-moving spring (6) is housed between push rod and the base, in installation cavity bottom static contact and the movable contact spring that is connected with leg arranged simultaneously, movable contact spring partly cooperates with the promotion of push rod bottom, it is characterized in that between a plurality of push rods, being equipped with gangbar (8), bayonet socket and push rod (1 separately on the gangbar, 2,3) lock slots on cooperates, and interlock spring (10) is arranged between gangbar and the base.

2, keyboard switch according to claim 1 is characterized in that described base (4) has evagination part (41) at its top, and slot is opened in evagination part side, after the slotting formula positioning and fixing gangbar, and overcoat over cap (5).

3, keyboard switch according to claim 2 is characterized in that described over cap (5) has the hole clipping (51) that partly cooperates with the base evagination, and base evagination part bottom has the bayonet socket (42) that inserts for over cap.

4, the keyboard switch of stating according to claim 2 is characterized in that described gangbar (8) has the holder of fixing interlock spring (10) at the sidewall that it inserts in the base evagination part slot, and base evagination partial sidewall has shallow location notch accordingly.

5, the keyboard switch of stating according to claim 2 is characterized in that its top of described push rod (1,2,3) is opened to do spring base after draw-in groove blocks sheet metal, above the base evagination part (41) spring localization part (44) is arranged accordingly.

6, the keyboard switch of stating according to claim 2 is characterized in that described evagination part (41) inboard has the location notch that cooperates with positioning strip (32) on the push rod.

7, keyboard switch according to claim 1 is characterized in that described push rod is equipped with clamping block (7) between adjacent push rod, and push rod has the positioning port (21,31) that cooperates with the clamping block end simultaneously.

8, keyboard switch according to claim 1, it is characterized in that described promotion part is to adopt the pulley base structure, its pulley is at the movable contact spring surface, whole pulley base (9) is to be enclosed within the installing hole of push rod bottom, its sidepiece pivot pin (92) is positioned on the locating notch that cavity sidewalls is installed, open little spring hole (91) accordingly on the wheel seat, interpolation little spring, the little spring other end just withstand on (11) on the cover plate.