The position-limit mechanism of motor-driven toaster balladeur train
Technical field
The utility model relates to a kind of toaster balladeur train, particularly a kind of position-limit mechanism up and down of toaster balladeur train.
Background technology
The electronics toaster of prior art generally is made up of parts such as shell, flap hand, base, electronic timer and movements, its major function has regularly to be toasted, resets, main application is a coke yellow for the baking rusk, the user can adjust the time as required, and the color that rusk is toasted meets user's hobby.Its course of work is as follows: after the user inserts supply socket with the toaster attaching plug, bread is put in the bread groove of people's toaster, balladeur train that flap hand connects and the carriage that is connected on the balladeur train are held bread, adjust the electronic timer knob and set stoving time, manually press flap hand, balladeur train and be connected carriage holder on the balladeur train and bread and drop to trench bottom, this moment the switch connection power supply, coil electricity on the electronic timer, armature is held, and switch keeps connecting flap hand always, balladeur train and carriage remain on original position always, heating wire is started working, baking bread, after stoving time reaches the time that electronic timer sets, the coil blackout on the electronic timer, armature gets loose, balladeur train, flap hand and carriage are subjected to the effect of tension spring tension to hold up the bread normal position of upspringing.The shortcoming of this toaster balladeur train structure is: the power of upspringing of carriage extension spring is excessive, the gem bullet can be flown; The power of upspringing of carriage extension spring is too small, and loaf is upspring not in place; The gem hoisting depth is not high enough, bad taking-up bread.And then people adopt the lifting of motor-driven balladeur train, adopt this structure to have the defective of the stall mechanism structure complexity of control motor.
Summary of the invention
The purpose of this utility model provides a kind of position-limit mechanism of motor-driven toaster balladeur train, and the technical problem that solve is the mechanism of simplifying the stall of control motor.
The utility model adopts following technical scheme for achieving the above object: the position-limit mechanism of motor-driven toaster balladeur train, be provided with balladeur train moving up and down in its toaster shell, fixed head one side on the shell interior framework is equipped with motor, the output shaft of motor links an end that makes the crank and rocker mechanism crank that balladeur train moves up and down, upper limit position switch and lower position switch that the restriction balladeur train moves up and down are installed on the described fixed head, the output shaft of motor connects an end of contact, and the other end of contact is provided with and upper limit position switch and the contacted wheel trolley of lower position switch.
One end of contact that connects on the output shaft of motor of the present utility model and crank is and is wholely set.
Motor of the present utility model is a permanent-magnet synchronous non-directional motor at a slow speed.
The quantity of contact of the present utility model is one to four.
Upper limit position switch of the present utility model and lower position switch are horizontal, vertical, slidingtype, contact or induction type travel switch.
Upper limit position switch of the present utility model and lower position switch can be made of a plane ring shaped insulating tape and a metallic conduction band that has separately, have on the contact to make wheel trolley and insulating tape and the contacted elastomeric element of metallic conduction band.
Upper limit position switch of the present utility model and lower position switch can be made of a plane ring shaped insulating tape and a metallic conduction band that has separately, have on the wheel trolley and insulating tape and the contacted elastomeric element of metallic conduction band.
Annular of the present utility model has three insulating tape and metallic conduction bands separately.
The closure of upper limit position switch and lower position switch or cut-off signal pass to the digital control circuit or the CPU single-chip microcomputer of control motor action.
Be provided with balladeur train moving up and down in the toaster shell of the present utility model, fixed head one side on the shell interior framework is equipped with motor, the output shaft of motor links an end that makes the crank and rocker mechanism crank that balladeur train moves up and down, the upper limit position switch of restriction sledge movements is installed on the described fixed head, lower position switch is installed in the left side that motor output shaft is a mid point, the right, the top, bottom or motor output shaft are on the position of other symmetry angle of mid point, the output shaft of motor connects an end of contact, and the other end of contact is provided with and upper limit position switch and the contacted wheel trolley of lower position switch.
Be provided with balladeur train moving up and down in the toaster shell of the present utility model, fixed head one side on the shell interior framework is equipped with motor, the output shaft of motor links an end that makes the crank and rocker mechanism crank that balladeur train moves up and down, the lower position switch of restriction sledge movements is installed on the described fixed head, upper limit position switch is installed in that the output shaft with motor is on the circumference at center on the fixed head, the output shaft of motor connects an end of contact, the other end of contact is provided with and the contacted wheel trolley of upper limit position switch, contacts with balladeur train during lower position that lower position switch is arrived by balladeur train.
The quantity of upper limit position switch of the present utility model and lower position switch is one to four.
The utility model compared with prior art adopts the running of upper limit position switch and lower position switch control motor and stops, thereby accurately controls the position that balladeur train rises and descends, and controlling organization is simple, reliable.
Description of drawings
Fig. 1 is the front view of the utility model toaster balladeur train position-limit mechanism embodiment ().
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the rearview of Fig. 1.
Fig. 4 is the vertical view of Fig. 1.
Fig. 5 is the front view of the utility model toaster balladeur train position-limit mechanism embodiment (two).
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the front view of the utility model toaster balladeur train position-limit mechanism embodiment (three).
Fig. 8 is the left view of Fig. 7.
Fig. 9 is that the utility model embodiment () balladeur train is at upper limit position figure.
Figure 10 is that the utility model embodiment () balladeur train is at lower position figure.
Figure 11 is the utility model embodiment (one's) a circuit diagram.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the utility model comprises parts such as the timer of shell, frame 5, balladeur train 2, CPU control and movement.In toaster, be fixed with vertical guide 1 on the frame 5, balladeur train 2 forms with vertical guide 1 and is slidingly connected, and balladeur train 2 can slide up and down along vertical guide 1, and the carriage 7 that is fixed on the balladeur train 2 is held bread.Fixed head 51 1 sides on the frame 5 are equipped with motor 6, motor 6 adopts permanent-magnet synchronous non-directional motor at a slow speed, link on the output shaft 11 of motor 6 end that makes the crank and rocker mechanism crank 4 that balladeur train 2 moves up and down is arranged, the left side of fixed head 51 is equipped with upper limit position switch 8, and the right is equipped with lower position switch 9.Be connected with an end of contact 10 on the output shaft 11 of motor 6, the other end of contact 10 is provided with wheel trolley 12, the quantity of contact 10 is one to four, one end of contact 10 and crank 4 can be and is wholely set, rocking bar 13 on crank 4 and the balladeur train 2 is hinged, rocking bar 13 is hinged with balladeur train 2, and that upper limit position switch 8 and lower position switch 9 adopt is horizontal, vertical, slidingtype, contact or induction type travel switch.Also can adopt upper limit position switch 8 to be installed on the fixed head 51, lower position switch 9 is installed in the position of the lower position that the balladeur train 2 on the frame 5 arrived, at motor output shaft is the left side of mid point, the right, the top, bottom or motor output shaft are on the position of other symmetry angle of mid point, or upper limit position switch 8 is installed in the position of the upper limit position that the balladeur train 2 on the frame 5 arrived, at motor output shaft is the left side of mid point, the right, the top, bottom or motor output shaft are on the position of other symmetry angle of mid point, lower position switch 9 is installed on the fixed head 51, and the quantity of upper limit position switch 8 and lower position switch 9 is one to four.When balladeur train 2 moves up and down, wheel trolley 12 contacts with upper limit position switch 8 and lower position switch 9, or contact with upper limit position switch 8, contact with balladeur train 2 during lower position that lower position switch 9 is arrived by balladeur train 2, or contact with lower position switch 9, contact with balladeur train 2 during upper limit position that upper limit position switch 8 is arrived by balladeur train 2.
When motor 6 output shafts 11 rotate, when switch 8 is connected in upper limit position switch 8 positions that make contact 10 be positioned at the left side, the I/O mouth of CPU obtains a connection signal, as shown in figure 11, and when connecting the power supply of transformer T, cpu control circuit is at first judged two switches on the toaster, be the state of upper limit position switch 8, lower position switch 9, as shown in Figure 9, when balladeur train 2 is in upper limit position, upper limit position switch 8 is disconnected by 12 compressings of the wheel trolley on the contact 10, and CPU sends control signal and makes motor 6 stalls.During start key on clicking control panel, CPU will make motor relay J1 connect, and motor 6 begins to rotate, the rotations that the rotation of motor 6 output shafts can make the crank 4 installed on the motor output shaft and contact 10 make 360 degree.Balladeur train 2 is under the effect of the downward pulling force of crank of installing on the motor output shaft 4 and rocking bar 13 and move down.As shown in figure 10, when balladeur train 2 moved down into the lower position, this moment, contact 10 also rotated to the position of lower position switch 9, and the wheel trolley 12 compressing lower position switch 9 on the contact 10 disconnect lower position switch 9.This moment, CPU connected the ANTI-JAM relay J after receiving signal, made heating wire energising beginning heating, and toaster begins to toast bread, and the CPU control timer picks up counting.After the baking bread time reaches the time of setting, CPU makes ANTI---and the JAM relay J disconnects, the heating wire outage, heating wire no longer generates heat, and CPU connects motor relay JI simultaneously, and motor 6 begins to rotate, because balladeur train 2 has been in lowest position, no matter the output shaft of motor toward which direction rotates, crank of installing on the motor output shaft 4 and rocking bar 13 all can produce the power that upwards pushes away to balladeur train 2, and balladeur train 2 upwards moves up under the effect of thrust at crank 4 and rocking bar 13.Move on on balladeur train 2 in limited time, contact 10 has also rotated to the position of upper limit position switch 8 simultaneously, and the wheel trolley 12 compressing upper limit position switch 8 of contact 10 disconnect upper limit position switch 8.Balladeur train 2, carriage 7 hold up bread and get back to upper limit position, and CPU disconnects relay J 1, and motor stops operating.So promptly finished a loaf of bread bake process of toaster.
As shown in Figure 5 and Figure 6, upper limit position switch 8 and lower position switch 9 can have three insulating tape and metallic conduction bands separately and constitute by being that of center is plane ring shaped with motor 6 output shafts on fixed head 51, the metallic conduction band disconnects at the right and left of horizontal line position, the centre is a narrow insulating tape, permagnetic synchronous motor 6 is fixed on fixed mount 51 1 sides on the frame 5 at a slow speed, link an end of crank 4 and an end of the contact 10 of band elastomeric element on the motor output shaft, the other end of spring contact 10 is provided with wheel trolley 12, spring contact 10 makes wheel trolley 12 contact with insulating tape and metallic conduction band, the crank 4 that is connected on the output shaft of contact 10 and motor 6 is orthogonal, or arbitrarily angled with 4 one-tenth on crank.When the output shaft of motor 6 rotates, crank 4 and spring contact 10 rotate simultaneously, when spring contact 10 rotates to annulus horizontal level one side, wheel trolley 12 is connected neighbouring conductive strips, the upper limit position switch 8 that is about to balladeur train 2 is connected, this moment, upper limit position switch 8 will be given signal of CPU, and control motor 6 stops the rotation, and balladeur train 2 has arrived upper limit position.In like manner, when spring contact 10 rotates to annulus horizontal level opposite side with motor 6 output shafts, wheel trolley 12 is connected neighbouring conductive strips, the lower position switch 9 that is about to balladeur train 2 is connected, this moment, lower position switch 9 will be given signal of CPU, control motor 6 stops the rotation, and balladeur train 2 has arrived the lower position.
As shown in Figure 7 and Figure 8, upper limit position switch 8 and lower position switch 9 can be on fixed heads 51 is that the annulus at center constitutes with motor 6 output shafts, there are three insulating tape and metallic conduction bands separately to constitute on the annulus, the metallic conduction band disconnects at the right and left of horizontal line position, the centre is a narrow insulating tape, permagnetic synchronous motor 6 is fixed on fixed mount 51 1 sides on the frame 5 at a slow speed, link an end of crank 4 and an end of contact 10 on the motor output shaft, the other end of contact 10 is provided with the wheel trolley 12 of band elastomeric element, elastomeric element makes wheel trolley 12 contact with insulating tape and metallic conduction band, the crank 4 that is connected on the output shaft of contact 10 and motor 6 is orthogonal, or arbitrarily angled with 4 one-tenth on crank.When the output shaft of motor 6 rotates, crank 4 and spring contact 10 rotate simultaneously, when spring contact 10 rotates to annulus horizontal level one side, wheel trolley 12 is connected neighbouring conductive strips, the upper limit position switch 8 that is about to balladeur train 2 is connected, this moment, upper limit position switch 8 will be given signal of CPU, and control motor 6 stops the rotation, and balladeur train 2 has arrived upper limit position.In like manner, when spring contact 10 rotates to annulus horizontal level opposite side with motor 6 output shafts, wheel trolley 12 is connected neighbouring conductive strips, the lower position switch 9 that is about to balladeur train 2 is connected, this moment, lower position switch 9 will be given signal of CPU, control motor 6 stops the rotation, and balladeur train 2 has arrived the lower position.
As shown in figure 11, the ANTI-JAM switch is connected with heater element, and the transformer of cpu control circuit and motor 6 are in parallel with the input power supply, and the input of CPU is connected with the relay of control motor 6 rotations and the output circuit of upper and lower limit bit switch.