CN206507547U - A kind of single motor three-tube type liftable desk - Google Patents
A kind of single motor three-tube type liftable desk Download PDFInfo
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- CN206507547U CN206507547U CN201621078618.0U CN201621078618U CN206507547U CN 206507547 U CN206507547 U CN 206507547U CN 201621078618 U CN201621078618 U CN 201621078618U CN 206507547 U CN206507547 U CN 206507547U
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Abstract
The utility model provides a kind of single motor three-tube type liftable desk, including：Bracket；Transmission mechanism, is installed on bracket, and the output end of transmission mechanism is connected with the gear-box of the left and right sides respectively；Single motor control box, is installed on bracket, and is electrically connected with transmission mechanism；Elevating mechanism, bracket is connected to by installing plate；Two bottom plates, are connected to elevating mechanism.A kind of single motor three-tube type liftable desk that the utility model is provided, drive rod rotation is driven by single motor, so as to drive the gear train synchronous rotary in the gear-box of both sides, and then realize both sides screw rod synchronous operation, so that the synchronous rise and fall of the both sides lifting assembly of desk, other lifting assembly includes three mutually nested columns, realizes secondary transmission so that changing the adjustable height of desk becomes more precisely and reliable.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of desk, and particularly a kind of single motor three-tube type can rise
Desk drops.
Background technology
Desk is a kind of very common office equipment in office now, but most desks are fixed, it is impossible to
Regulation, it is impossible to adapt to the change of working environment and user of service's demand, make clerical workforce easily be produced in office process tired
Feel, and office resource cannot be utilized effectively.
In summary, to solve the deficiency on existing office desk structure, it is necessary to design a kind of Height Adjustable, and lifting is put down
Steady single motor three-tube type liftable desk.
The content of the invention
The purpose of this utility model is there is above mentioned problem for existing technology, it is proposed that a kind of Height Adjustable, and
The stable single motor three-tube type liftable desk of lifting.
The purpose of this utility model can be realized by following technical proposal：A kind of single motor three-tube type liftable office
Table, including：
Bracket, including two groups or so be arranged side by side it is removable by second cross beam between first crossbeam, and two groups of first crossbeams
Formula is connected, wherein, the side of every group of first crossbeam is each provided with a supporting plate and a gear-box；
Transmission mechanism, is installed on one of which first crossbeam, and transmission mechanism output end respectively with the left and right sides
Gear-box is connected；
Single motor control box, two ends are respectively arranged on two second cross beams, and are electrically connected with transmission mechanism；
Elevating mechanism, including two lifting assemblies for being symmetricly set in bracket both sides, and one end point of two lifting assemblies
It is not connected to by two pieces of installing plates on the two groups of first crossbeams in left and right；Two bottom plates, are connected to the other end of lifting assembly；
Also include the single motor control box circuit for being used to control elevating mechanism, single motor control box circuit includes micro- place
Device, circuit for alarming, power supply stabilization circuit, and execution circuit and motor-drive circuit are managed, wherein, the microprocessor sends letter
Number give motor-drive circuit, the motor-drive circuit receive signal adjust motor working condition, the motor-drive circuit
Feedback signal is generated according to the working condition of motor and is sent to microprocessor, the microprocessor controls to perform according to feedback signal
The switch of circuit and the switch for controlling circuit for alarming, the microprocessor include the first chip IC 1, first chip IC 1
Model 15w404as, the power supply stabilization circuit include the second chip IC 2, the model of second chip IC 2
34063。
In a kind of above-mentioned single motor three-tube type liftable desk, lifting assembly includes：Three mutually nested successively
The first column, the second column and the 3rd column；Screw rod, is nested in the 3rd column, and one end and the gear train phase of screw rod
Even；Fixed cover, is located on screw rod, and is mutually fixed by axle sleeve.
In a kind of above-mentioned single motor three-tube type liftable desk, the transmission mechanism includes：Motor, is installed on
Fill on plate；Drive link, two ends are connected with the gear train in gear-box respectively, wherein, the outbound course of motor and turning for drive link
Dynamic direction is vertical and parallel with the moving direction of lifting assembly.
In a kind of above-mentioned single motor three-tube type liftable desk, the second column includes：Second fall way；First card
Part, is nested in one end of the second fall way, and positioned at the outside of the second fall way；Positioning sleeve, is nested in the another of the second fall way
One end, and on the inside of the second fall way, and offer the through hole that is engaged with fixed cover along the thickness direction of positioning sleeve；It is some
Individual first connection sheet, is set along the outside circular array for the second fall way for being nested with positioning sleeve one end；3rd column includes：
3rd fall way；Second fastener, is nested in one end of the 3rd fall way；Several second connection sheets, circular array is arranged at
The other end of 3rd fall way, wherein, the structure of the second connection sheet is identical with the first connection chip architecture.
In a kind of above-mentioned single motor three-tube type liftable desk, the first positioning hole and the first card on the first column
The first positioning convex point on part is corresponding；The first detent on first column and the first locating convex block phase on the first fastener
Correspondence；The second positioning hole on second column is corresponding with the second positioning convex point on the second fastener, and second on the second column
Detent is corresponding with the second positioning convex point on the second fastener；Wherein, the side of the first positioning convex point and the second convex
The equal trimming in side of point.
In a kind of above-mentioned single motor three-tube type liftable desk, the middle part of bottom plate is set in hollow form, along bottom plate
The length direction of bottom surface offer several square slotted eyes in a word；The two ends of bottom plate are symmetrically each provided with a lower margin, and ground
Pin is detachably connected with bottom plate.
In a kind of above-mentioned single motor three-tube type liftable desk, the circuit for alarming includes：8th resistance R8, police
Report device BUZ, the 7th diode D7, the second triode Q2, and the 9th resistance R9, the 8th resistance R8 one end connection power supply electricity
VCC is pressed, its other end one end respectively with siren BUZ, the 7th diode D7 negative electrode are connected, the siren BUZ other end
With the 7th diode D7 anode and together be connected with the second triode Q2 emitter stage, the current collection of the second triode Q2
Pole connects ground wire, and the second triode Q2 base stage connects the 9th resistance R9 one end formation circuit for alarming, and the resistance R9's is another
One end connects the 13rd pin of the first chip IC 1.
In a kind of above-mentioned single motor three-tube type liftable desk, the power supply stabilization circuit includes：First patches
Part CN1, the first piezo-resistance ZNR1, the first electric capacity C1, the first electrochemical capacitor E1, the second diode D2, first resistor R1, second
Resistance R2, the second electric capacity C2, the 3rd electric capacity C3, the first voltage-regulator diode ZD1, the second electrochemical capacitor E2, the 4th electric capacity C4, second
Chip IC 2,3rd resistor R3, the first inductance L1, the 5th electric capacity C5, the 3rd electrochemical capacitor E3, the 6th electric capacity C6, the 3rd diode
D3, the 4th resistance R4, the 4th diode D4, the second connector CN2, the 21st resistance R21, the first LED 1,
20th resistance R20, the 5th diode D5, the 6th diode D6, the 18th resistance R18, the 7th triode Q7, the 6th triode
Q6, the 19th resistance R19, the 5th electrochemical capacitor E5, the 14th electric capacity C14, the first transistor TR1, the 6th electric capacity C6, the 4th electricity
Solve electric capacity E4, the 7th electric capacity C7；
The first electrochemical capacitor E1 is in parallel with the first piezo-resistance ZNR1, the first electric capacity C1, first electrochemical capacitor
E1 negative pole ground wire, its positive pole meets the first connector CN1, the second diode D2 and connects the first electrochemical capacitor E1 positive pole,
Second diode D2 negative electrode connects the second electrochemical capacitor E2 positive pole, and the negative pole ground wire of the second electrochemical capacitor E2 is described
4th electric capacity C4 two ends are connected on the second electrochemical capacitor E2 both positive and negative polarity, the first voltage-regulator diode ZD1 and second resistance respectively
R2, the 4th electric capacity C4 are in parallel, the first voltage-regulator diode ZD1 negative electrode connection first resistor R1, and the first resistor R1's is another
The second electrochemical capacitor E2 of end connection positive pole, the anode of the first voltage-regulator diode ZD1 connects the second electric capacity C2 one end, described
Second electric capacity C2 the second electrochemical capacitor of another termination E2 positive pole；
5th pin of second chip IC 2 connects the 4th resistance R4 one end, the other end of the 4th resistance R4
Ground connection, the 4th pin ground connection of the second chip IC 2, the 3rd pin of the second chip IC 2 connects the 5th electric capacity C5 one end, and described the
The E3 negative poles of five electric capacity C5 the 3rd electrochemical capacitors of another termination, the negative pole ground connection of the 3rd electrochemical capacitor E3, the 3rd electrolysis electricity
The positive pole for holding E3 connects the first inductance L1 one end, the second pin of the second chip IC of another termination 2 of the first inductance L1, institute
The negative electrode for stating the 3rd diode D3 connects the second pin of the second chip IC 2, and the 3rd diode D3 anode connects the 3rd electrochemical capacitor
E3 negative pole, the two-stage of the 6th electric capacity C6 is connected on the both positive and negative polarity of the 3rd electrochemical capacitor, the one of the 3rd resistor R3 respectively
The 3rd electrochemical capacitor E3 positive pole is terminated, the 5th pin of its second chip IC 2 of another termination；
Second connector is provided with 3 interfaces, the second interface ground connection of second connector, and its 3rd interface connects the
16th pin of one chip IC 1, the second connector first interface connects the 4th diode D4 negative electrode, the 4th diode D4
Anode connect the 3rd electrochemical capacitor E3 positive pole, No. 1 of a second plug connector CN2 of termination of the 21st resistance R21 connects
Mouthful, anode of its first LED 1 of another termination, the minus earth of first LED 1, described the
The anode of 20 resistance R20 first LED 1 of termination, the 17th of its first chip IC 1 of another termination draws
Pin；
The anode of the 5th diode D5 connects the 3rd electrochemical capacitor E3 positive pole, and its negative electrode connects the 18th resistance R18's
One end, the triode Q6 of another termination the 6th of the 18th resistance R18 emitter stage, the colelctor electrode of the 6th triode Q6
Ground connection, its base stage meets the 19th resistance R19, and the emitter stage of the 7th triode Q7 connects the 5th diode D5 negative electrode, its base
Pole connects the 6th triode Q6 emitter stage, the 7th triode Q7 electrochemical capacitor E5 of colelctor electrode the 5th positive pole, the 5th electricity
Electric capacity E5 negative pole ground connection is solved, the positive pole of the 5th electrochemical capacitor E5 meets the first transistor TR1, the first transistor TR1
Another termination supply voltage VDD, the 14th electric capacity C14 connections are connected on the 5th electrochemical capacitor E5 both positive and negative polarity respectively, described
6th diode D6 anode connects the 3rd electrochemical capacitor E3 positive poles, and its negative electrode connects the 4th electrochemical capacitor E4 positive pole, the 4th electrolysis
Electric capacity E4 negative poles are grounded, and the 7th electric capacity C7 two ends are connected on the 4th electrochemical capacitor E4 both positive and negative polarity respectively, the 4th electrolysis electricity
The positive pole of appearance meets supply voltage VCC.
In a kind of above-mentioned single motor three-tube type liftable desk, the execution circuit includes：11st electric capacity
C11, the 23rd resistance R23, the 3rd Transient Suppression Diode T3, first switch SW1, the second Transient Suppression Diode T2,
25 resistance R25, second switch SW2, the 13rd electric capacity C13, the first Transient Suppression Diode T1, the 24th resistance R24,
Second electric capacity C2, the 3rd switch SW3, the 5th triode Q5, the 30th resistance R30, the 31st resistance R31；
The base stage of the 5th triode Q5 connects the 30th resistance R30 one end, the other end of the 30th resistance R30
Connect the 16th pin of the first chip IC 1, one end ground connection of the 31st resistance R31, its 5th triode of another termination
Q5 base stage, the grounded collector of the 5th triode Q5；
First connection branch road：The emitter stage of the 5th triode Q5 connects the 3rd Transient Suppression Diode T3 one end, institute
State the 3rd Transient Suppression Diode T3 and connect the 23rd resistance R23 one end, the 13rd electric capacity C13 one end, the described 20th
Three resistance R23 another termination supply voltage VCC, the 13rd electric capacity C13 other end ground connection；The first switch SW1
One end ground connection, its another termination the 3rd Transient Suppression Diode T3, the of the first connection branch road first chip IC 1 of connection
Seven pins；
Second connection branch road：The emitter stage of the 5th triode Q5 connects the first Transient Suppression Diode T1 one end, institute
State the first Transient Suppression Diode T1 resistance R25 of another termination the 25th one end, the 13rd electric capacity C13 one end, institute
State the 25th resistance R25 another termination supply voltage VCC, the other end ground connection of the 13rd electric capacity C13, described second
SW2 one end ground connection is switched, its first Transient Suppression Diode of another termination, the second connection branch road connects the first chip IC 1
The 5th pin；
3rd connection branch road：The emitter stage of the 5th triode Q5 connects the second Transient Suppression Diode T2 one end, institute
State the second Transient Suppression Diode T2 resistance R24 of another termination the 24th one end, the 12nd electric capacity C12 one end, institute
Another termination supply voltage VCC of the 24th resistance is stated, the other end of the 12nd electric capacity C12 is grounded, and the described 3rd opens
One end ground connection of pass, its 3rd Transient Suppression Diode of another termination, the 3rd connection branch road connects the of the first chip IC 1
Six pins.
In a kind of above-mentioned single motor three-tube type liftable desk, the motor-drive circuit includes：8th electric capacity
C8, the second voltage-regulator diode D2, the 7th resistance R7, the first triode Q1, the first diode D1, the 22nd resistance R22, the 6th
Resistance R6, the first relay RL1, the second relay RL2, the 8th diode D8, the 3rd triode Q3, the 27th resistance R27,
26th resistance R26, the 3rd piezo-resistance ZNR3, the 9th electric capacity C9, the 4th triode Q4, the 29th resistance R29, second
18 resistance R28；
The ends of 8th electric capacity C8 two are connected in the second voltage-regulator diode ZD2 anode and cathode, second voltage-regulator diode
ZD2 plus earth, its negative electrode connects the 7th resistance R7 one end, the first triode of other end Q1 of the 7th resistance R7 hair
Emitter-base bandgap grading, the base stage of the first triode Q1 connects the 6th resistance R6 one end, and the other end ground connection of the 6th resistance R6 is described
A 22nd resistance R22 first triode Q1 of termination base stage, its another termination pin of the first chip IC 1 the 18th；
The colelctor electrode of the first triode Q1 connects the first diode D1 anode, and affiliated first diode D1 negative electrode connects
24V voltages, the first triode Q1 colelctor electrode connects the first relay RL1 one end, a port other the first relay RL1
Connect 24V voltages, the first relay RL1 also has a port to connect the 9th electric capacity C9 one end, the 9th electric capacity C9 other end
Connect the second relay RL2 one end, the first triode Q1 of termination of the second relay RL2 in addition colelctor electrode, the second electromagnetism
Switch RL2 also has a port to connect 24V voltages.
Compared with prior art, a kind of single motor three-tube type liftable desk that the utility model is provided, passes through single electricity
Machine drives drive rod rotation, so as to drive the gear train synchronous rotary in the gear-box of both sides, and then realizes that both sides screw rod is synchronously transported
OK so that the synchronous rise and fall of both sides lifting assembly of desk, lifting assembly includes three mutually nested columns in addition,
Realize secondary transmission so that changing the adjustable height of desk becomes more precisely and reliable.
Brief description of the drawings
Fig. 1 is a kind of structural representation for single motor three-tube type liftable desk that the utility model is provided.
Fig. 2 is the structural representation at another visual angle of the desk shown in Fig. 1.
Fig. 3 is the structural representation of the preferred embodiment middle gear case of the utility model one and elevating mechanism.
Fig. 4 is the structural representation at gear-box shown in Fig. 3 and another visual angle of elevating mechanism.
Fig. 5 is the explosive view of elevating mechanism in the preferred embodiment of the utility model one.
Fig. 6 is the preferred embodiment middle gear case of the utility model one and elevating mechanism internal structure schematic diagram.
Fig. 7 is a kind of embodiment block diagram of control circuit of the present utility model；
Fig. 8 is the utility model the first chip diagram；
Fig. 9 is the utility model circuit for alarming diagram；
Figure 10 is the utility model power supply stabilization circuit diagram；
Figure 11 is the utility model execution circuit diagram；
Figure 12 is the utility model motor-drive circuit diagram.
In figure, 100, bracket；110th, first crossbeam；120th, second cross beam；130th, supporting plate；140th, gear-box；150th, install
Plate；200th, transmission mechanism；210th, motor；220th, drive link；300th, Double Motor Control box；310th, microprocessor；320th, alarm electricity
Road；330th, execution circuit；340th, motor-drive circuit；400th, elevating mechanism；410th, lifting assembly；411st, the first column；411a、
First fall way；411b, the first mounting hole, 411c, the first positioning hole；411d, the first detent；411e, the 6th positioning hole；
411f, the second mounting hole；412nd, the second column；412a, the second fall way；412b, the first fastener；412c, positioning sleeve；412d、
First connection sheet；412e, the second positioning hole；412f, the second detent；412g, the first connecting hole；412h, the 3rd positioning hole；
412i, the first locating convex block；412j, the first positioning convex point；412k, through hole；412l, the second connecting hole；412m, the 4th positioning
Hole；412n, the 3rd connecting hole；412o, the first locating dowel；413rd, the 3rd column；413a, the 3rd fall way；413b, the second card
Part；413c, the second connection sheet；413d, the 5th positioning hole；413e, the second locating dowel；413f, the 4th connecting hole；413g, second
Locating convex block；413h, the second positioning convex point；414th, fixed cover；415th, axle sleeve；416th, adapter sleeve；416a, the 3rd locating dowel；
416b, the 4th connecting hole；500th, bottom plate；510th, square slotted eye；520th, the 3rd mounting hole；530th, lower margin.
Embodiment
The following is specific embodiment of the utility model and with reference to accompanying drawing, further is made to the technical solution of the utility model
Description, but the utility model is not limited to these embodiments.
As depicted in figs. 1 and 2, single motor three-tube type liftable desk that the utility model is provided, including：Bracket 100,
First crossbeam 110 is arranged side by side including two groups or so, the quantity of every group of first crossbeam 110 is two, and two groups of first crossbeams 110
Between by the removable connection of second cross beam 120, wherein, the side of every group of first crossbeam 110 is each provided with a supporting plate 130 and one
Gear-box 140；Transmission mechanism 200, is installed on one of which first crossbeam 110, and transmission mechanism 200 output end respectively with
The gear-box 140 of the left and right sides is connected, and drives the middle gear group of both sides gear-box 140 to run simultaneously by transmission mechanism 200；Single electricity
Machine control box 300, two ends are respectively arranged on two second cross beams 120, and electrically connected with transmission mechanism 200；Elevating mechanism
400, including two lifting assemblies 410 for being symmetricly set in the both sides of bracket 100, and one end of two lifting assemblies 410 leads to respectively
Two pieces of installing plates 150 are crossed to be connected on the two groups of first crossbeams 110 in left and right；Two bottom plates 500, are connected to lifting assembly 410
The other end.
Preferably, as depicted in figs. 1 and 2, transmission mechanism 200 includes：Motor 210, is installed on installing plate 150；Transmission
Bar 220, two ends are connected with the gear train in gear-box 140 respectively, wherein, the middle part of drive link 220 and the output shaft of motor 210
It is connected, drives drive link 220 to rotate by motor 210, so as to drive gear train to rotate, and then realize the upper of lifting assembly 410
Lower movement.
Preferably, as depicted in figs. 1 and 2, the outbound course of motor 210 is vertical with the rotation direction of drive link 220, and with
The moving direction of lifting assembly 410 is parallel.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, lifting assembly 410 includes：Three successively mutually nested
One column 411, the second column 412 and the 3rd column 413；Screw rod, is nested in the 3rd column 413, and one end of screw rod with
Gear train is connected；Fixed cover 414, is located on screw rod, and is mutually fixed by axle sleeve 415, limits fixed cover 414 on screw rod
Move radially.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the first column 411 includes：Including the first fall way 411a, one
Hold as blind end, and the first mounting hole 411b is provided with along along each angle of blind end, realized between bottom plate 500 detachable
Connection, the other end is openend, and circular array is provided with several first positioning holes 411c, wherein, with the first positioning
Hole 411c the first fall way 411a side edge passes through the first positioning hole along several first detents 411d is above provided with
411c and the first detent 411d, limits the most short relative distance between the first column 411 and the second column 412.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the second column 412 includes：Second fall way 412a；First card
Part 412b, is nested in the second fall way 412a one end, and positioned at the second fall way 412a outside；Positioning sleeve 412c, it is nested
In the second fall way 412a other end, and on the inside of the second fall way 412a；Several first connection sheets 412d, along nesting
The outside circular array for having the second fall way 412a of positioning sleeve 412c one end is set, and is used as the second fall way 412a and positioning
Cover the connecting portion between 412c.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, it is nested with first fall way of first fastener 412b one end
The upper circular arrays of 411a are provided with several second positioning holes 412e, and the end side edge along be above provided with several second
Detent 412f, by the second positioning hole 412e and the second detent 412f, limits the second column 412 and the 3rd column
Most short relative distance between 413；Circular array on the first fall way 411a of positioning sleeve 412c one end is nested with to be provided with
Several first connecting holes 412g, and each first connecting hole 412g both sides are each provided with one the 3rd positioning hole 412h.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, it is symmetrically arranged with along along the side wall of first fastener 412b one end
Two the first locating convex block 412i, and the first locating convex block 412i position is corresponding with the first detent 411d position,
When preventing that the second column 412 from retracting, in direct the first column of retraction 411, so as to improve the reliability of desk；Along the first fastener
Circular array is provided with several first positioning convex points 412j on the side wall of the 412b other ends, and the first positioning convex point 412j
Position is corresponding with the first positioning hole 411c position, further improves the reliability of desk.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, through hole 412k is offered along positioning sleeve 412c thickness direction,
It is engaged with fixed cover 414, pilot hole when being lifted as the second column 412；Along positioning sleeve 412c one end circular array
Several second connecting holes 412l is provided with, and each second connecting hole 412l both sides are each provided with the 4th positioning hole 412m,
Wherein, the second connecting hole 412l position is corresponding with the first connecting hole 412g position, is used as the second column 412 and positioning sleeve
Connecting portion between 412c；4th positioning hole 412m position is corresponding with the 3rd positioning hole 412h position, is used as second
Position point between column 412 and positioning sleeve 412c.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the first connection sheet 412d thickness direction is provided with the 3rd
Connecting hole 412n, and the 3rd connecting hole 412n position position phase respectively with the first connecting hole 412g and the second connecting hole 412l
Correspondence；3rd connecting hole 412n both sides are each provided with one first locating dowel 412o, and the first locating dowel 412o is located at first and connected
Contact pin 412d side, wherein, the first locating dowel 412o position and the 3rd positioning hole 412h and the 4th positioning hole 412m position
Put corresponding, make it that the connection between the second column 412 and positioning sleeve 412c is more accurate by the first connection sheet 412d, from
And cause the relative displacement between the second column 412 and the first column 411 to change more smoothly.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the 3rd column 413 includes：3rd fall way 413a；Second card
Part 413b, is nested in the 3rd fall way 413a one end；Several second connection sheets 413c, circular array is arranged at the 3rd liter
The pipe 413a other end drops, wherein, the second connection sheet 413c structure is identical with the first connection sheet 412d structures.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the 3rd fall way of second connection sheet 413c one end is installed
The upper circular arrays of 413a are provided with several the 5th positioning hole 413d, and are positioned with second of side on the second connection sheet 413c
Post 413e position is corresponding；If being nested with circular array on the 3rd fall way 413a of second fastener 413b one end to be provided with
Dry the 4th connecting hole 413f, and the 4th connecting hole 413f is used as the connecting portion between the 3rd fall way 413a and gear-box 140.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, it is symmetrical arranged along along the side wall of the second fastener 413b one end
There are two the second locating convex block 413g, and the second locating convex block 413g position is relative with the second detent 412f position
Should, when preventing that the 3rd column 413 from retracting, in direct the second column of retraction 412, improve the reliability of desk；Along the second fastener
Circular array is provided with several second positioning convex points 413h, and the second positioning convex point 413h on the side wall of the 413b other ends
Put corresponding with the second positioning hole 412e position, further improve the reliability of desk.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the first connecting hole 412g and the second connecting hole 412l are heavy
Hole, and the first connecting hole 412g and the second connecting hole 412l is screwed hole, the 3rd connecting hole 412n and the 4th connecting hole 413f are equal
For unthreaded hole.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the first fall way 411a, second fall way 412a and the 3rd liter
The section for dropping pipe 413a can be square, circular and polygon etc..
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the first positioning convex point 412j and the second positioning convex point 413h's
Mechanism is identical, wherein, the first positioning convex point 412j side and the second positioning convex point 413h equal trimming in side, i.e., the first positioning
Salient point 412j section and the second positioning convex point 413h section are in quadrangle.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, adapter sleeve is provided with the screw rod away from the one end of axle sleeve 415
416, and the axis direction circular array of adapter sleeve 416 is provided with two the 3rd locating dowel 416a and two the 5th connecting holes
416b, and the 3rd locating dowel 416a and the 5th connecting hole 416b are spaced, wherein, the 3rd locating dowel 416a position and first
The 6th positioning hole 411e position is corresponding on column 411；5th connecting hole 416b position and the second peace on the first column 411
The position for filling hole 411f is corresponding, realizes the accurate installation of adapter sleeve 416.
Preferably, as shown in figure 1, the middle part of bottom plate 500 is set in hollow form, along the length direction of the bottom surface of bottom plate 500
Several square slotted eyes 510 are offered in a word, wherein, the square slotted eye 510 in the middle part of the bottom surface of bottom plate 500 is corresponding the bottom of at
The 3rd mounting hole 520 is provided with each angle of the surface region of plate 500, and the position of the 3rd mounting hole 520 is installed with first
Hole 411b position is corresponding, realizes being detachably connected between the first column 411 and bottom plate 500；The two ends of bottom plate 500 are symmetrical
A lower margin 530 is each provided with, and lower margin 530 is detachably connected with bottom plate 500, and the ground where desk is laid to leveling.
Preferably, the lifting unit of lifting assembly 410 can be arranged at the side leaned on into bottom plate 500.
A kind of single motor three-tube type liftable desk that the utility model is provided, passes through single motor control box 300 first
The motor 210 being installed on second cross beam 120 is opened, and make it that the gear train in both sides gear-box 140 is same by drive link 220
Step is rotated, so that the screw rod synchronous rotary in both sides lifting assembly 410 is driven, when motor 210 is rotated forward, lifting assembly
The second column 412 or the 3rd column 413 in 410 rise so that the relative displacement between bracket 100 and bottom plate 500 becomes big；When
When motor 210 is inverted, the second column 412 or the 3rd column 413 in lifting assembly 410 decline so that bracket 100 and bottom plate
Relative displacement between 500 diminishes, until the first locating convex block 412i and the first detent 411d phase clampings, the first convex
Point 412j is nested with the first positioning hole 411c, stops the motion of the second column 412；The positioning of second locating convex block 413g and second
Groove 412f phase clampings, the second positioning convex point 413h is nested with the second positioning hole 412e412e, stops the fortune of the 3rd column 413
It is dynamic.
A kind of single motor three-tube type liftable desk that the utility model is provided, drive link is driven by single motor 210
220 rotate, so as to drive the gear train synchronous rotary in both sides gear-box 140, and then realize both sides screw rod synchronous operation so that
The synchronous rise and fall of the both sides lifting assembly 410 of desk, in addition lifting assembly 410 include three mutually nested columns,
Realize secondary transmission so that changing the adjustable height of desk becomes more precisely and reliable.
As shown in Fig. 7-Figure 12, single circuit of motor control box 300 includes：Microprocessor 310, circuit for alarming 320, power supply are steady
Volt circuit, and execution circuit 330 and motor-drive circuit 340, wherein, the microprocessor 310 sends a signal to motor drive
Dynamic circuit 340, the motor-drive circuit 340 receives the working condition that signal adjusts motor, the motor-drive circuit 340
Microprocessor 310 is sent to according to the working condition generation feedback signal of motor, the microprocessor 310 is according to feedback signal control
The switch of execution circuit 330 and the switch for controlling circuit for alarming 320.
The microprocessor 310 includes the first chip IC 1, the model 15w404as of first chip IC 1, the electricity
Source mu balanced circuit includes the second chip IC 2, the model 34063 of second chip IC 2.
The circuit for alarming 320 includes：8th resistance R8, siren BUZ, the 7th diode D7, the second triode Q2, with
And the 9th resistance R9, described 8th resistance R8 one end connects supply voltage VCC, its other end one end respectively with siren BUZ,
7th diode D7 negative electrode is connected, the siren BUZ other end and the 7th diode D7 anode simultaneously together with the two or three
Level pipe Q2 emitter stage is connected, the colelctor electrode connection ground wire of the second triode Q2, the second triode Q2 base stage connection the
Nine resistance R9 one end forms circuit for alarming 320, and the other end of the resistance R9 connects the first chip IC 1
The 13rd pin.
The power supply stabilization circuit includes：First connector CN1, the first piezo-resistance ZNR1, the first electric capacity C1, the first electricity
Solve electric capacity E1, the second diode Q2, first resistor R1, second resistance R2, the second electric capacity C2, the 3rd electric capacity C3, the first voltage stabilizing two
Pole pipe ZD1, the second electrochemical capacitor E2, the 4th electric capacity C4, the second chip IC 2,3rd resistor R3, the first inductance L1, the 5th electric capacity
C5, the 3rd electrochemical capacitor E3, the 6th electric capacity C6, the 3rd diode D3, the 4th resistance R4, the 4th diode D4, the second connector
CN2, the 21st resistance R21, the first LED 1, the 20th resistance R20, the 5th diode D5, the 18th resistance
R18, the 7th triode Q7, the 6th triode Q6, the 19th resistance R19, the 5th electrochemical capacitor E5, the 14th electric capacity C14, first
Transistor TR1, the 6th electric capacity C6, the 4th electrochemical capacitor E4, the 7th electric capacity C7；
The first electrochemical capacitor E1 is in parallel with the first piezo-resistance ZNR1, the first electric capacity C1, first electrochemical capacitor
E1 negative pole ground wire, its positive pole meets the first connector CN1, the second diode D2 and connects the first electrochemical capacitor E1 positive pole,
Second diode D2 negative electrode connects the second electrochemical capacitor E2 positive pole, and the negative pole ground wire of the second electrochemical capacitor E2 is described
4th electric capacity C4 two ends are connected on the second electrochemical capacitor E2 both positive and negative polarity, the first voltage-regulator diode ZD1 and second resistance respectively
R2, the 4th electric capacity C4 are in parallel, the first voltage-regulator diode ZD1 negative electrode connection first resistor R1, and the first resistor R1's is another
The second electrochemical capacitor E2 of end connection positive pole, the anode of the first voltage-regulator diode ZD1 connects the second electric capacity C2 one end, described
Second electric capacity C2 the second electrochemical capacitor of another termination E2 positive pole；
5th pin of second chip IC 2 connects the 4th resistance R4 one end, the other end of the 4th resistance R4
Ground connection, the 4th pin ground connection of the second chip IC 2, the 3rd pin of the second chip IC 2 connects the 5th electric capacity C5 one end, and described the
The E3 negative poles of five electric capacity C5 the 3rd electrochemical capacitors of another termination, the negative pole ground connection of the 3rd electrochemical capacitor E3, the 3rd electrolysis electricity
The positive pole for holding E3 connects the first inductance L1 one end, the second pin of the second chip IC of another termination 2 of the first inductance L1, institute
The negative electrode for stating the 3rd diode D3 connects the second pin of the second chip IC 2, and the 3rd diode D3 anode connects the 3rd electrochemical capacitor
E3 negative pole, the two-stage of the 6th electric capacity C6 is connected on the both positive and negative polarity of the 3rd electrochemical capacitor, the one of the 3rd resistor R3 respectively
The 3rd electrochemical capacitor E3 positive pole is terminated, the 5th pin of its second chip IC 2 of another termination；
Second connector is provided with 3 interfaces, the second interface ground connection of second connector, and its 3rd interface connects the
16th pin of one chip IC 1, the second connector first interface connects the 4th diode D4 negative electrode, the 4th diode D4
Anode connect the 3rd electrochemical capacitor E3 positive pole, No. 1 of a second plug connector CN2 of termination of the 21st resistance R21 connects
Mouthful, anode of its first LED 1 of another termination, the minus earth of first LED 1, described the
The anode of 20 resistance R20 first LED 1 of termination, the 17th of its first chip IC 1 of another termination draws
Pin；
The anode of the 5th diode D5 connects the 3rd electrochemical capacitor E3 positive pole, and its negative electrode connects the 18th resistance R18's
One end, the triode Q6 of another termination the 6th of the 18th resistance R18 emitter stage, the colelctor electrode of the 6th triode Q6
Ground connection, its base stage meets the 19th resistance R19, and the emitter stage of the 7th triode Q7 connects the 5th diode D5 negative electrode, its base
Pole connects the 6th triode D6 emitter stage, the 7th triode Q7 electrochemical capacitor E5 of colelctor electrode the 5th positive pole, the 5th electricity
Electric capacity E5 negative pole ground connection is solved, the positive pole of the 5th electrochemical capacitor E5 meets the first transistor TR1, the first transistor TR1
Another termination supply voltage VDD, the 14th electric capacity C14 connections are connected on the 5th electrochemical capacitor E5 both positive and negative polarity respectively, described
6th diode D6 anode connects the 3rd electrochemical capacitor E3 positive poles, and its negative electrode connects the 4th electrochemical capacitor E4 positive pole, the 4th electrolysis
Electric capacity E4 negative poles are grounded, and the 7th electric capacity C7 two ends are connected on the 4th electrochemical capacitor E4 both positive and negative polarity respectively, the 4th electrolysis electricity
The positive pole of appearance meets supply voltage VCC.
The execution circuit 330 includes：11st electric capacity C11, the 23rd resistance R23, the 3rd Transient Suppression Diode
T3, first switch SW1, the second Transient Suppression Diode T2, the 25th resistance R25, second switch SW2, the 13rd electric capacity
C13, the first Transient Suppression Diode T1, the 24th resistance R24, the second electric capacity C2, the 3rd switch SW3, the 5th triode Q5,
30th resistance R30, the 31st resistance R31；
The base stage of the 5th triode Q5 connects the 30th resistance R30 one end, the other end of the 30th resistance R30
Connect the 16th pin of the first chip IC 1, one end ground connection of the 31st resistance R31, its 5th triode of another termination
Q5 base stage, the grounded collector of the 5th triode Q5；
First connection branch road：The emitter stage of the 5th triode Q5 connects the 3rd Transient Suppression Diode T3 one end, institute
State the 3rd Transient Suppression Diode T3 and connect the 23rd resistance R23 one end, the 13rd electric capacity C13 one end, the described 20th
Three resistance R23 another termination supply voltage VCC, the 13rd electric capacity C13 other end ground connection；The first switch SW1
One end ground connection, its another termination the 3rd Transient Suppression Diode T3, the of the first connection branch road first chip IC 1 of connection
Seven pins；
Second connection branch road：The emitter stage of the 5th triode Q5 connects the first Transient Suppression Diode T1 one end, institute
State the first Transient Suppression Diode T1 resistance R25 of another termination the 25th one end, the 13rd electric capacity C13 one end, institute
State the 25th resistance R25 another termination supply voltage VCC, the other end ground connection of the 13rd electric capacity C13, described second
SW2 one end ground connection is switched, its first Transient Suppression Diode of another termination, the second connection branch road connects the first chip IC 1
The 5th pin；
3rd connection branch road：The emitter stage of the 5th triode Q5 connects the second Transient Suppression Diode T2 one end, institute
State the second Transient Suppression Diode T2 resistance R24 of another termination the 24th one end, the 12nd electric capacity C12 one end, institute
Another termination supply voltage VCC of the 24th resistance is stated, the other end of the 12nd electric capacity C12 is grounded, and the described 3rd opens
One end ground connection of pass, its 3rd Transient Suppression Diode of another termination, the 3rd connection branch road connects the of the first chip IC 1
Six pins.
The motor-drive circuit 340 includes：8th electric capacity C8, the second voltage-regulator diode D2, the 7th resistance R7, the one or three
Pole pipe Q1, the first diode D1, the 22nd resistance R22, the 6th resistance R6, the first relay RL1, the second relay RL2,
Eight diode D8, the 3rd triode Q3, the 27th resistance R27, the 26th resistance R26, the 3rd piezo-resistance ZNR3, the 9th
Electric capacity C9, the 4th triode Q4, the 29th resistance R29, the 28th resistance R28；
The ends of 8th electric capacity C8 two are connected in the second voltage-regulator diode ZD2 anode and cathode, second voltage-regulator diode
ZD2 plus earth, its negative electrode connects the 7th resistance R7 one end, the first triode of other end Q1 of the 7th resistance R7 hair
Emitter-base bandgap grading, the base stage of the first triode Q1 connects the 6th resistance R6 one end, and the other end ground connection of the 6th resistance R6 is described
A 22nd resistance R22 first triode Q1 of termination base stage, its another termination pin of the first chip IC 1 the 18th；
The colelctor electrode of the first triode Q1 connects the first diode D1 anode, and affiliated first diode D1 negative electrode connects
24V voltages, the first triode Q1 colelctor electrode connects the first relay RL1 one end, a port other the first relay RL1
Connect 24V voltages, the first relay RL1 also has a port to connect the 9th electric capacity C9 one end, the 9th electric capacity C9 other end
Connect the second relay RL2 one end, the first triode Q1 of termination of the second relay RL2 in addition colelctor electrode, the second electromagnetism
Switch RL2 also has a port to connect 24V voltages.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (9)
1. a kind of single motor three-tube type liftable desk, it is characterised in that including：
Bracket, including two groups or so be arranged side by side it is removable by second cross beam between first crossbeam, and first crossbeam described in two groups
Formula is connected, wherein, the side of first crossbeam is each provided with a supporting plate and a gear-box described in every group；
Transmission mechanism, is installed on described in one of which on first crossbeam, and the transmission mechanism output end respectively with left and right two
The gear-box of side is connected；
Single motor control box, two ends are respectively arranged on two second cross beams, and electrically connected with the transmission mechanism；
Elevating mechanism, including two lifting assemblies for being symmetricly set in the bracket both sides, and the one of two lifting assemblies
End is connected to described in two groups of left and right on first crossbeam by two pieces of installing plates respectively；
Two bottom plates, are connected to the other end of the lifting assembly；
Also include single motor control box circuit for the elevating mechanism, single motor control box circuit includes microprocessor
Device, circuit for alarming, power supply stabilization circuit, and execution circuit and motor-drive circuit, wherein, the microprocessor sends signal
To motor-drive circuit, the motor-drive circuit receives the working condition that signal adjusts motor, the motor-drive circuit root
Microprocessor is sent to according to the working condition generation feedback signal of motor, the microprocessor performs electricity according to feedback signal control
The switch on road and the switch for controlling circuit for alarming, the microprocessor include the first chip IC 1, first chip IC 1
Model 15w404as, the power supply stabilization circuit includes the second chip IC 2, the model 34063 of second chip IC 2；
The transmission mechanism includes：
Motor, is installed on the installing plate；
Drive link, two ends are connected with the gear train in the gear-box respectively；
Wherein, the outbound course of the motor is vertical with the rotation direction of the drive link, and with the movement of the lifting assembly
Direction is parallel.
2. a kind of single motor three-tube type liftable desk according to claim 1, it is characterised in that the lifting assembly
Including：
Three mutually nested the first column, the second column and the 3rd columns successively；
Screw rod, is nested in the 3rd column, and one end of the screw rod is connected with the gear train；
Fixed cover, is located on the screw rod, and is mutually fixed by axle sleeve.
3. a kind of single motor three-tube type liftable desk according to claim 2, it is characterised in that second column
Including：
Second fall way；
First fastener, is nested in one end of second fall way, and positioned at the outside of second fall way；
Positioning sleeve, is nested in the other end of second fall way, and on the inside of second fall way, and along the positioning
The thickness direction of set offers the through hole being engaged with the fixed cover；
Several first connection sheets, set along the outside circular array for second fall way for being nested with described positioning sleeve one end
Put；
3rd column includes：
3rd fall way；
Second fastener, is nested in one end of the 3rd fall way；
Several second connection sheets, circular array is arranged at the other end of the 3rd fall way；
Wherein, the structure of second connection sheet is identical with the described first connection chip architecture.
4. a kind of single motor three-tube type liftable desk according to claim 3, it is characterised in that first column
On the first positioning hole it is corresponding with the first positioning convex point on first fastener；The first positioning on first column is recessed
Groove is corresponding with the first locating convex block on first fastener；The second positioning hole and the described second card on second column
The second positioning convex point on part is corresponding, and the second detent on second column is determined with second on second fastener
Position salient point is corresponding；Wherein, the equal trimming in side of the side of first positioning convex point and second positioning convex point.
5. a kind of single motor three-tube type liftable desk according to claim 1, it is characterised in that in the bottom plate
Portion is set in hollow form, and several square slotted eyes are offered in a word along the length direction of the bottom surface of the bottom plate；The bottom plate
Two ends be symmetrically each provided with a lower margin, and lower margin is detachably connected with bottom plate.
6. a kind of single motor three-tube type liftable desk according to claim 1, it is characterised in that the circuit for alarming
Including：8th resistance R8, siren BUZ, the 7th diode D7, the second triode Q2, and the 9th resistance R9, the 8th electricity
Hinder R8 one end connection supply voltage VCC, its other end one end respectively with siren BUZ, the 7th diode D7 negative electrode are connected,
The siren BUZ other end and the 7th diode D7 anode and together be connected with the second triode Q2 emitter stage, it is described
Second triode Q2 colelctor electrode connection ground wire, the second triode Q2 base stage connects the 9th resistance R9 one end formation alarm electricity
Road, the other end of the resistance R9 connects the 13rd pin of the first chip IC 1.
7. a kind of single motor three-tube type liftable desk according to claim 1, it is characterised in that the power supply voltage stabilizing
Circuit includes：First connector CN1, the first piezo-resistance ZNR1, the first electric capacity C1, the first electrochemical capacitor E1, the second diode
D2, first resistor R1, second resistance R2, the second electric capacity C2, the 3rd electric capacity C3, the first voltage-regulator diode ZD1, the second electrochemical capacitor
E2, the 4th electric capacity C4, the second chip IC 2,3rd resistor R3, the first inductance L1, the 5th electric capacity C5, the 3rd electrochemical capacitor E3,
Six electric capacity C6, the 3rd diode D3, the 4th resistance R4, the 4th diode D4, the second connector CN2, the 21st resistance R21,
First LED 1, the 20th resistance R20, the 5th diode D5, the 6th diode D6, the 18th resistance R18, the 7th
Triode Q7, the 6th triode Q6, the 19th resistance R19, the 5th electrochemical capacitor E5, the 14th electric capacity C14, the first transistor
TR1, the 6th electric capacity C6, the 4th electrochemical capacitor E4, the 7th electric capacity C7；
The first electrochemical capacitor E1 is in parallel with the first piezo-resistance ZNR1, the first electric capacity C1, the first electrochemical capacitor E1's
Negative pole ground wire, its positive pole meets the first connector CN1, the second diode D2 and connects the first electrochemical capacitor E1 positive pole, second
Diode D2 negative electrode connects the second electrochemical capacitor E2 positive pole, the negative pole ground wire of the second electrochemical capacitor E2, the described 4th
Electric capacity C4 two ends are connected on the second electrochemical capacitor E2 both positive and negative polarity respectively, the first voltage-regulator diode ZD1 and second resistance R2, the
Four electric capacity C4 are in parallel, the first voltage-regulator diode ZD1 negative electrode connection first resistor R1, the first resistor R1 other end connection
Second electrochemical capacitor E2 positive pole, the anode of the first voltage-regulator diode ZD1 connects the second electric capacity C2 one end, second electricity
Hold C2 the second electrochemical capacitor of another termination E2 positive pole；
5th pin of second chip IC 2 connects the 4th resistance R4 one end, and the other end of the 4th resistance R4 is grounded,
The 4th pin ground connection of second chip IC 2, the 3rd pin of the second chip IC 2 connects the 5th electric capacity C5 one end, the 5th electricity
Hold the E3 negative poles of C5 the 3rd electrochemical capacitors of another termination, the negative pole ground connection of the 3rd electrochemical capacitor E3, the 3rd electrochemical capacitor E3
Positive pole connect the first inductance L1 one end, the second pin of the second chip IC of another termination 2 of the first inductance L1, described
Three diode D3 negative electrode connects the second pin of the second chip IC 2, and the 3rd diode D3 anode connects the 3rd electrochemical capacitor E3's
Negative pole, the two-stage of the 6th electric capacity C6 is connected on the both positive and negative polarity of the 3rd electrochemical capacitor, a termination of the 3rd resistor R3 respectively
3rd electrochemical capacitor E3 positive pole, the 5th pin of its second chip IC 2 of another termination；
Second connector connects the first core provided with 3 interfaces, the second interface ground connection of second connector, its 3rd interface
Piece IC1 the 16th pin, the second connector first interface connects the 4th diode D4 negative electrode, the sun of the 4th diode D4
Pole connects the 3rd electrochemical capacitor E3 positive pole, and the one of the 21st resistance R21 terminates the second plug connector CN2 No. 1 interface, its
The anode of the first LED 1 of another termination, the minus earth of first LED 1, the described 20th
The anode of resistance R20 first LED 1 of termination, the 17th pin of its first chip IC 1 of another termination；
The anode of the 5th diode D5 connects the 3rd electrochemical capacitor E3 positive pole, and its negative electrode connects the 18th resistance R18 one end,
The triode Q6 of another termination the 6th of 18th resistance R18 emitter stage, the grounded collector of the 6th triode Q6,
Its base stage meets the 19th resistance R19, and the emitter stage of the 7th triode Q7 connects the 5th diode D5 negative electrode, and its base stage connects
Six triode Q6 emitter stage, the 7th triode Q7 electrochemical capacitor E5 of colelctor electrode the 5th positive pole, the 5th electrochemical capacitor
E5 negative pole ground connection, the positive pole of the 5th electrochemical capacitor E5 meets the first transistor TR1, and the first transistor TR1's is another
Termination power voltage VDD, the 14th electric capacity C14 connections are connected on the 5th electrochemical capacitor E5 both positive and negative polarity respectively, and the described 6th 2
Pole pipe D6 anode connects the 3rd electrochemical capacitor E3 positive poles, and its negative electrode connects the 4th electrochemical capacitor E4 positive pole, the 4th electrochemical capacitor E4
Negative pole is grounded, and the 7th electric capacity C7 two ends are connected on the 4th electrochemical capacitor E4 both positive and negative polarity respectively, and the 4th electrochemical capacitor is just
Pole meets supply voltage VCC.
8. a kind of single motor three-tube type liftable desk according to claim 1, it is characterised in that the execution circuit
Including：11st electric capacity C11, the 23rd resistance R23, the 3rd Transient Suppression Diode T3, first switch SW1, the second transient state
Suppress diode T2, the 25th resistance R25, second switch SW2, the 13rd electric capacity C13, the first Transient Suppression Diode T1,
24th resistance R24, the second electric capacity C2, the 3rd switch SW3, the 5th triode Q5, the 30th resistance R30, the 31st electricity
Hinder R31；
The base stage of the 5th triode Q5 connects the 30th resistance R30 one end, another termination of the 30th resistance R30
16th pin of one chip IC 1, one end ground connection of the 31st resistance R31, the 5th triode Q5's of its another termination
Base stage, the grounded collector of the 5th triode Q5；
First connection branch road：The emitter stage of the 5th triode Q5 connects the 3rd Transient Suppression Diode T3 one end, described
Three Transient Suppression Diode T3 connect the 23rd resistance R23 one end, the 13rd electric capacity C13 one end, the 23rd electricity
Hinder R23 another termination supply voltage VCC, the other end ground connection of the 13rd electric capacity C13；The one of the first switch SW1
End ground connection, the 3rd Transient Suppression Diode T3 of its another termination, the first connection branch road connects the 7th of the first chip IC 1 and drawn
Pin；
Second connection branch road：The emitter stage of the 5th triode Q5 connects the first Transient Suppression Diode T1 one end, described
The one Transient Suppression Diode T1 resistance R25 of another termination the 25th one end, the 13rd electric capacity C13 one end, described
25 resistance R25 another termination supply voltage VCC, the 13rd electric capacity C13 other end ground connection, the second switch
SW2 one end is grounded, and its first Transient Suppression Diode of another termination, the second connection branch road connects the of the first chip IC 1
Five pins；
3rd connection branch road：The emitter stage of the 5th triode Q5 connects the second Transient Suppression Diode T2 one end, described
The two Transient Suppression Diode T2 resistance R24 of another termination the 24th one end, the 12nd electric capacity C12 one end, described
Another termination supply voltage VCC of 24 resistance, the 12nd electric capacity C12 other end ground connection, the 3rd switch
One end is grounded, and its 3rd Transient Suppression Diode of another termination, the 3rd connection branch road connects the 6th of the first chip IC 1 and drawn
Pin.
9. a kind of single motor three-tube type liftable desk according to claim 1, it is characterised in that the motor driving
Circuit includes：8th electric capacity C8, the second voltage-regulator diode D2, the 7th resistance R7, the first triode Q1, the first diode D1,
22 resistance R22, the 6th resistance R6, the first relay RL1, the second relay RL2, the 8th diode D8, the 3rd triode
Q3, the 27th resistance R27, the 26th resistance R26, the 3rd piezo-resistance ZNR3, the 9th electric capacity C9, the 4th triode Q4,
29th resistance R29, the 28th resistance R28；
The ends of 8th electric capacity C8 two are connected in the second voltage-regulator diode ZD2 anode and cathode, the second voltage-regulator diode ZD2's
Plus earth, its negative electrode connects the 7th resistance R7 one end, the first triode of other end Q1 of the 7th resistance R7 emitter stage,
The base stage of the first triode Q1 connects the 6th resistance R6 one end, the other end ground connection of the 6th resistance R6, described second
A 12 resistance R22 first triode Q1 of termination base stage, its another termination pin of the first chip IC 1 the 18th；
The colelctor electrode of the first triode Q1 connects the first diode D1 anode, and affiliated first diode D1 negative electrode meets 24V
Voltage, the first triode Q1 colelctor electrode connects the first relay RL1 one end, and a port other the first relay RL1 connects
24V voltages, the first relay RL1 also has a port to connect the 9th electric capacity C9 one end, the 9th electric capacity C9 another termination
Second relay RL2 one end, the first triode Q1 of termination of the second relay RL2 in addition colelctor electrode, the second electromagnetism is opened
Closing RL2 also has a port to connect 24V voltages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621078618.0U CN206507547U (en) | 2016-09-26 | 2016-09-26 | A kind of single motor three-tube type liftable desk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621078618.0U CN206507547U (en) | 2016-09-26 | 2016-09-26 | A kind of single motor three-tube type liftable desk |
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| Publication Number | Publication Date |
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| CN206507547U true CN206507547U (en) | 2017-09-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107960734A (en) * | 2017-12-18 | 2018-04-27 | 长沙宁湖机械设备有限公司 | A kind of same table |
| CN108078157A (en) * | 2017-12-18 | 2018-05-29 | 长沙宁湖机械设备有限公司 | A kind of same table |
-
2016
- 2016-09-26 CN CN201621078618.0U patent/CN206507547U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107960734A (en) * | 2017-12-18 | 2018-04-27 | 长沙宁湖机械设备有限公司 | A kind of same table |
| CN108078157A (en) * | 2017-12-18 | 2018-05-29 | 长沙宁湖机械设备有限公司 | A kind of same table |
| CN107960734B (en) * | 2017-12-18 | 2020-06-19 | 佛山市钢宇高家具有限公司 | Lifting table |
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