Utility model content
The purpose of this utility model is just to provide what a kind of relay switching circuit structure and corresponding micromachine drove
Relay, in place of being fully solved above-mentioned the deficiencies in the prior art.
The purpose of this utility model is realized by following technical proposals:
A kind of relay switching circuit structure, including micromachine and power supply, the two poles of the earth of the micromachine are corresponding and electric
The two poles of the earth connection in source, and wherein the first auxiliary contact switch in parallel and the first diode on circuit all the way, on another route road
Second auxiliary contact switch in parallel and the second diode, the equal corresponding power of the positive pole of first diode and the second diode,
Negative pole corresponds to micromachine, and the first auxiliary contact switch and the second auxiliary contact switch are normally closed switch.
The relay that a kind of micromachine with above-mentioned relay switching circuit structure drives, including pedestal, micro electric
Machine, gear train, sector gear, push pedal, dynamic spring lead-out tablet, movable contact spring, shell fragment, movable contact, static contact spring piece and stationary contact, described miniature
In pedestal, the outfan of micromachine is engaged with sector gear bottom motor by gear train, the push pedal bottom hinge
The side of sector gear is connected on, push pedal top is provided with opening, the one end for moving spring lead-out tablet passes through the opening, the other end and movable contact spring
One end connection, the other end connection shell fragment of movable contact spring installs movable contact on shell fragment, corresponding movable contact arranges static contact spring piece, and
Stationary contact corresponding with movable contact is installed on static contact spring piece, it is characterised in that:Also include the first auxiliary contact on pedestal
Switch and the second auxiliary contact switch, the corresponding push pedal top of first auxiliary contact switch are arranged, and are closed when dynamic and static contact is in
When closing extreme position, the first auxiliary contact switch is disconnected by push pedal, and the sector gear is provided with respect to the another side of push pedal
Connecting rod, to should connecting rod install the second contact switch, when dynamic and static contact in disconnect extreme position when, connecting rod by second aid in
Contact switch disconnects.
Further, first auxiliary contact switch includes metal clips and lower metal clips, the upper metal clips
It is fixed on pedestal with one end of lower metal clips, the other end starts upper metal clips tool by bump contacts from the contact point
Have the one section of extension for extending outward, at the top of push pedal to should extension be provided with ejection part.
Further, second auxiliary contact switch includes metal clips and lower metal clips, the upper metal clips
It is fixed on pedestal with one end of lower metal clips, the other end starts lower metal clips tool by bump contacts from the contact point
There is the one section of extension for extending outward, the extension is correspondingly arranged at below connecting rod.
Compared with prior art, the beneficial effects of the utility model are:Simple structure, reasonable in design, auxiliary by two pairs
The extreme position of contact switch monitoring movable contact motion is helped, the power on/off of micromachine is further controlled, when dynamic and static contact is being closed
During the extreme position for closing or disconnecting, micromachine disconnects the power supply of micromachine when situation is blocked, and prevents gear failure, effectively
Extend the service life of relay.
Specific embodiment
This utility model is further described with reference to specific embodiments and the drawings.
As shown in Figures 1 to 7, the relay that a kind of micromachine drives, including pedestal 9, micromachine 13, circuit board
12nd, cable 1, cable 2 11, gear 1, rotating shaft 1, gear 2 16, gear 3 17, rotating shaft 2 18, sector gear 19,
Connecting rod 23, push pedal 20, dynamic spring lead-out tablet 8, movable contact spring, shell fragment 4, movable contact 3, static contact spring piece 1 and stationary contact 2.
In pedestal 9,13 control end mounting circuit boards 12 of micromachine, circuit board 12 pass through the micromachine 13
Cable 1 and cable 2 11 are connected with power supply.By rotating shaft 1 in pedestal 9, gear 3 17 leads to the gear 2 16
Rotating shaft 2 18 is crossed in pedestal 9, the gear 2 16 and gear 3 17 are respectively provided with large fluted disc and little tooth post.Micromachine 13
Outfan gear 1 is installed, gear 1 engaged with the large fluted disc of gear 2 16, the little tooth post of gear 2 16 and gear three
17 large fluted disc engagement, the little tooth post of gear 3 17 are engaged with 19 bottom of sector gear.20 bottom of the push pedal is hinged on sector
The side of gear 19,20 top of push pedal are provided with opening, and the one end for moving spring lead-out tablet 8 passes through the opening, the other end and movable contact spring
One end connects, the other end connection shell fragment 4 of movable contact spring, installs movable contact 3 on shell fragment 4, and corresponding movable contact 3 arranges static contact spring piece 1, and
Install and 3 corresponding stationary contact 2 of movable contact on static contact spring piece 1.Above-mentioned movable contact spring is by movable contact spring 1, movable contact spring 26 and dynamic spring
Piece 37 is folded and is formed.
The first auxiliary contact switch 21 and the second auxiliary contact switch in normally off is also equipped with pedestal 9
22, corresponding 20 top of push pedal of first auxiliary contact switch 21 is arranged, when dynamic and static contact 3,2 is in closed limit,
Push pedal 20 is moved up and disconnects the first auxiliary contact switch 21, and the another side of 19 relative push pedal 20 of the sector gear is installed
Have connecting rod 23, to should connecting rod 23 install the second contact switch 22, when dynamic and static contact 3,2 in disconnect extreme position when, connecting rod
20 move down and disconnect the second auxiliary contact switch 22.
Concretely, 21 passes opened by first auxiliary contact includes metal clips 21-1 and lower metal clips 21-2, institute
The one end for stating metal clips 21-1 and lower metal clips 21-2 is fixed on pedestal 9, and the other end is connect from this by bump contacts
Contact starts upper metal clips 21-1 and there is one section of extension 21-3 extending outward, to should extension at the top of push pedal 20
21-3 is provided with ejection part.
Second auxiliary contact switch 22 includes metal clips 22-1 and lower metal clips 22-2, the upper metal elastic
One end of piece 22-1 and lower metal clips 22-2 is fixed on pedestal 9, and the other end passes through bump contacts, under starting from the contact point
There is metal clips 22-2 the one section of extension 22-3 for extending outward, extension 22-3 to be correspondingly arranged at connecting rod 23 and gear two
Between 16 little tooth post.
The upper and lower metal clips of first auxiliary contact switch 21 and the second auxiliary contact switch 22 can be respectively provided with convex
Point, is contacted to salient point by salient point;Can also one of them there is salient point, another correspondence position be plane, by convex
Point is contacted to plane.
The relay switching circuit structure of above-mentioned relay, including micromachine 13 and power supply, the micromachine 13
The two poles of the earth are corresponding to be connected with the two poles of the earth of power supply, and wherein the first auxiliary contact switch 21 in parallel and the first diode on circuit all the way
D1, the second auxiliary contact switch 22 in parallel and the second diode D2, the first diode D1 and second on another route road
The equal corresponding power of the positive pole of diode D2, negative pole correspond to micromachine 13, and the first auxiliary contact switch 21 and the second auxiliary are touched
Point switch 22 is normally closed switch.The first diode D1 and the second diode D2 are respectively mounted on the circuit board 12.
This utility model monitors dynamic and static contact 3,2 by the first auxiliary contact switch 21, the second auxiliary contact switch 22
Closed limit and disconnect extreme position, and then control micromachine 13 power on/off, make gear persistently will not rotate and
Cause gear failure.
As shown in figure 8, when needing to close dynamic and static contact 3,2, positive power supply, i.e. A-, B+ polarity power need to be applied, micro-
Type motor 13 is rotated forward, and is driven by sector gear 19 and move in push pedal 20, is further driven to dynamic spring lead-out tablet 8, movable contact spring and shell fragment 4
Close dynamic and static contact 3,2.When dynamic and static contact 3,2 is in closed limit, move in push pedal 20, ejection part is pushed aside upwards
The upper metal clips 21-1 of the first auxiliary contact switch 21, disconnects the first auxiliary contact switch 21, first on circuit board 12
Diode D1 is not turned on, and A-, B+ polarity power is disconnected, and micromachine 13 stops operating, and dynamic and static contact 3,2 is protected in closure
Hold state.
As shown in figure 9, if desired disconnecting dynamic and static contact 3,2, reverse electrical source, i.e. A+, B- polarity power need to be applied, miniature
Motor 13 is inverted, drive sector gear 19 rotate, push pedal 20 move down make dynamic and static contact 3,2 disconnect, when movable contact 3 move to disconnected
When opening extreme position, the lower metal clips 22-2 of the second auxiliary contact switch 22 pushed downwards aside by the connecting rod 23 on sector gear 19,
Disconnect the second auxiliary contact switch 22, the second diode D2 is not turned on, and A+, B- polarity power is disconnected, and micromachine 13 stops
Rotation stop is moved, and dynamic and static contact 3,2 is in and disconnects hold mode, otherwise in the same manner.Therefore, this utility model has monitoring movable contact position
Put, protect gear, extend the advantage of relay service life.
Preferred embodiment of the present utility model is the foregoing is only, not in order to limit this utility model, all at this
Any modification, equivalent and improvement that is made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.