CN207397521U - A kind of mobile display device - Google Patents

Abstract

The utility model discloses a kind of mobile display devices, its key points of the technical solution are that including display and guide rail, display is slidably connected to guide rail, sprocket wheel is provided at both ends in guide rail, chain is engaged on sprocket wheel, display is fixedly connected with chain, and chain is driven by motor, and the control circuit of the rotating of the position control motor of the user in front according to display is provided on display；Control circuit is detected the position of user, when the position where display is deviateed in the position of user, control circuit control motor rotates, motor rotates band movable sprocket and rotates, so as to which chain be driven to be rotated around sprocket wheel, and then display is driven to be slided on slide toward close to the direction of user, until display is corresponding with user, control circuit control motor stops, reduce after user has left display during the explanation, it needs to go to the distance of required movement before display, improves usage experience, improve explanation efficiency.

Description

A kind of mobile display device

Technical field

The utility model is related to a kind of display device, more specifically, it relates to a kind of mobile display device.

Background technology

For people when being shown and explaining to multimedia content, frequent guild uses display, on the screen of display Colourful content can be shown, the content that instructor is facilitated to be explained required for more fully being introduced to spectators.

But display is typically all what is fixed on the ground, instructor can walk about during explanation, away from aobvious Instructor is also needed to before going to display after showing device, reduces the efficiency of explanation.

Utility model content

The purpose of this utility model is to provide a kind of mobile display device, has and is moved with the movement of user, The advantages of improving explanation efficiency.

The above-mentioned technical purpose of the utility model technical scheme is that：The removable display dress of one kind It puts, it is characterized in that：Including display and guide rail, the display is slidably connected to guide rail, is set at the both ends of the guide rail There is sprocket wheel, chain is engaged between the sprocket wheel, the display is fixedly connected with chain, and the chain is driven by motor, institute State the control circuit of the rotating of the position control motor for the user that the front according to display is provided on display.

By using above-mentioned technical proposal, control circuit is detected the position of user, when the position of user is inclined During from position where display, control circuit control motor rotates, and motor rotates band movable sprocket and rotates, so as to drive chain around Sprocket wheel rotates, and then display is driven to be slided on guide rail toward close to the direction of user, until display is corresponding with user, Control circuit control motor stops, and reduces user and has left during the explanation after display, it is necessary to go to display Mobile distance, improves usage experience, improves explanation efficiency needed for preceding.

Preferably, the control circuit includes the first range sensor, second distance sensor, the first comparison circuit, the Two comparison circuits, first switch part, second switch part, the first relay and the second relay, first range sensor and Second distance sensor is respectively arranged at the both sides of display, and the user in front of it is detected to send it is corresponding away from From signal, first comparison circuit compared with the first preset signals and sends the distance signal of the first range sensor First control signal, second comparison circuit is by the distance signal of second distance sensor compared with the second preset signals And send second control signal, the first switch part in response to first control signal to turn on first switch part, described second Switch member is in response to second control signal to turn on second switch part, and the coil tandem of first relay is in first switch Part, for the coil tandem of second relay in second switch part, the normally opened contact of first relay is serially connected with motor Circuit is rotated forward, the normally opened contact of second relay is serially connected with the reversion circuit of motor.

By using above-mentioned technical proposal, the first range sensor and second distance sensor are respectively in the both sides of display User is detected compared with the distance of its own, front is nearer with the distance between user, the value of output It is bigger, and respectively through the first comparison circuit and the second comparison circuit compared with the first preset signals and the second preset signals, When output valve is more than preset signals, the first range sensor or second distance sensor export corresponding first control signal or Second control signal is to turn on first switch part or second switch part, and when user is close to the first range sensor, first opens Close part conducting, the coil of the first relay obtains electric, and normally opened contact is closed and connects the rotating forward circuit of motor, to the position of display Put and be adjusted, when user is close to second distance sensor, the conducting of second switch part, the coil of the second relay obtain it is electric, Its normally opened contact is closed and connects the reversion circuit of motor, and the position of display is adjusted.

Preferably, there is the first limit switch close to the end set of the first range sensor in the guide rail, led described Rail has the second limit switch close to the end set of second distance sensor, and the both ends of the display are opened respectively with the first /V It closes and the second limit switch contacts to trigger the first limit switch and the second limit switch, the first limit switch concatenation In first switch part, second limit switch is serially connected with second switch part.

By using above-mentioned technical proposal, limit switch limits the distance that display slides on guide rail, aobvious When showing that device slides into the end of guide rail, display props up the first limit switch or it is triggered the second limit switch so that its It disconnects, and causes the coil losing electricity of the first relay or the second relay, disconnect the forward or reverse circuit of motor, motor stops Only, reduce causes the situation of display damage due to motor is rotated further.

Preferably, the control circuit further includes the 3rd range sensor, the 3rd comparison circuit and the 3rd switch member, described 3rd range sensor is arranged at the middle part of display, and the user in front of it is detected to send corresponding distance letter Number, the distance signal of the 3rd range sensor compared with the 3rd preset signals and is sent the 3rd by the 3rd comparison circuit Control signal, the 3rd switch member bridging have the normally opened contact of the 3rd relay, and the 3rd switch member is in response to the 3rd control Signal processed to turn on the 3rd switch member, the coil tandem of the 3rd relay in the 3rd switch member, the 3rd relay Two normally-closed contacts are serially connected with first switch part and second switch part respectively, and the first switch part bridging has the first relay Normally opened contact, the second switch part bridging have the normally opened contact of the second relay.

By using above-mentioned technical proposal, the normally opened contact of the first relay and the second relay is connected across first and opens respectively It closes part and second switch part forms self-locking circuit so that during the position of adjustment display, in the first range sensor Or after second distance sensor leaves user, motor remains to be rotated further, in display motion to the 3rd range sensor During front, the 3rd comparison circuit output distance signal value be more than the 3rd preset signals, through the 3rd comparison circuit relatively after, the 3rd Comparison circuit sends the 3rd control signal and turns on the 3rd switch member, and the coil of the 3rd relay obtains electric, is serially connected with first The normally-closed contact of switch member and second switch part disconnects, and motor stops so that display is parked in the front of user, improves Explain efficiency.

Preferably, a normally-closed contact of first relay is serially connected with the coil of the second relay, described second after One normally-closed contact of electric appliance is serially connected with the coil of the first relay.

By using above-mentioned technical proposal, the first relay and the second relay form interlocking, reduce because the first distance passes The equal someone in the front of sensor and second distance sensor, and so that the rotating forward circuit of motor and reversion circuit are also turned on, so as to Damage the situation of motor.

Preferably, it is electrically connected with to amplify distance signal between first range sensor and the first comparison circuit First amplifying circuit is electrically connected with to amplify the of distance signal between the second distance sensor and the second comparison circuit Two amplifying circuits.

By using above-mentioned technical proposal, the first amplifying circuit and the second amplifying circuit respectively to the first range sensor and The smaller output quantity of second distance sensor is amplified, and improves the accuracy of detection to tiny signal.

Preferably, the first switch part and second switch part are triode.

By using above-mentioned technical proposal, triode response is rapid, and in-fighting is small, and component is inexpensively, helps to save Cost-saving.

Preferably, starting switch is provided on the display, the starting switch is electrically connected to power supply and first switch Between part and second switch part.

By using above-mentioned technical proposal, starting switch is set, just presses and opens when display is needed to be moved with user Dynamic switch, optimizes usage experience.

Preferably, first range sensor and second distance sensor are respectively facing the side of the both sides away from display To setting.

By using above-mentioned technical proposal so that when being moved to the outside of display, display can just move user, Because of user, when the content on screen is explained at the edge of display, there is a situation where movements for display for reduction.

In conclusion the utility model has the advantages that：Starting switch is pressed, in user in the process walked about During middle deviation display, the distance signal of the first range sensor or the output of second distance sensor is amplified to be compared first Circuit or the second comparison circuit relatively after so that corresponding first switch part or the conducting of second switch part, and then connect motor Forward or reverse circuit so that display moves on guide rail, and the 3rd range sensor and user couple are moved in display At once, motor stops, and reduces user and has left during the explanation after display, it is necessary to required shifting before going to display Dynamic distance, improves usage experience, improves explanation efficiency, and the first limit switch and the second limit switch are leading display The distance slided on rail is limited, and reduce causes to show due to motor is being rotated further after display is moved to the end of guide rail The situation of device damage.

Description of the drawings

Fig. 1 is the structure diagram of the present embodiment；

Fig. 2 is the relation schematic diagram of the present embodiment display and chain；

Fig. 3 is the circuit relationships schematic diagram in the present embodiment；

Fig. 4 is the positive and negative rotation circuit schematic diagram of motor in the present embodiment.

Reference numeral：1st, display；101st, screen；102nd, pedestal；2nd, guide rail；3rd, sprocket wheel；4th, chain；5th, motor；6th, One range sensor；7th, second distance sensor；8th, the first comparison circuit；9th, the second comparison circuit；10th, first switch part；11、 Second switch part；12nd, the first relay；13rd, the second relay；14th, the first limit switch；15th, the second limit switch；16th, Three range sensors；17th, the 3rd comparison circuit；18th, the 3rd switch member；19th, the 3rd relay；20th, the first amplifying circuit；21、 Second amplifying circuit；22nd, the 3rd amplifying circuit；23rd, starting switch.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

This specific embodiment is only explanation to the utility model, is not the limitation to the utility model, ability Field technique personnel can as needed make the present embodiment the modification of no creative contribution after this specification is read, but As long as it is all protected in the right of the utility model be subject to Patent Law.

A kind of mobile display device, as shown in Figure 1, including display 1 and guide rail 2, guide rail 2 is horizontally set on ground On, display 1 includes screen 101 and pedestal 102, and screen 101 is arranged at the top of pedestal 102, pedestal 102 to screen 101 into Row support, and pedestal 102 is slidably connected on guide rail 2.

Starting switch 23 is provided on pedestal 102, level is installed with respectively in the bottom of the both sides of screen 101 One range sensor 6 and second distance sensor 7, and the first range sensor 6 and second distance sensor 7 are respectively facing far The direction of both sides from display 1 is set, and the lower horizontal in the middle part of 1 front side of display is installed with the 3rd distance and passes outwardly Sensor 16, the first range sensor 6,7 and the 3rd range sensor 16 of second distance sensor are voltage analog output, and And the user immediately ahead of it is nearer with its distance, output voltage is higher.

As shown in Fig. 2, it is rotatably connected to sprocket wheel 3 respectively in the lower section at the both ends of guide rail 2, and engagement is matched somebody with somebody between sprocket wheel 3 Conjunction has chain 4, and the bottom of pedestal 102 is fixedly connected with chain 4, and rotating sprocket 3 can drive chain 4 to be slided around sprocket wheel 3, And then pedestal 102 is driven to be slided on guide rail 2, and sprocket wheel 3 is driven by the motor 5 for being fixedly installed in 3 one side of sprocket wheel.

There is the first limit switch 14 close to the end set of the first range sensor 6 in guide rail 2, in guide rail 2 close to second The end set of range sensor 7 has the second limit switch 15, the both ends of pedestal 102 respectively with the first limit switch 14 and second Limit switch 15 contacts to trigger the first limit switch 14 and the second limit switch 15, the first limit switch 14 or the second limit Bit switch 15 is in off-state in a triggered.

As shown in Figure 3 and Figure 4, the output terminal of the first range sensor 6 is electrically connected with the same mutually defeated of the first amplifying circuit 20 Enter end, the inverting input of the first amplifying circuit 20 is grounded through resistance R1, the output terminal of the first amplifying circuit 20 and reversely input Resistance R2 is electrically connected between end, the output terminal of the first comparison circuit 8 is electrically connected with the in-phase input end of the first comparison circuit 8, The inverting input of first comparison circuit 8 is electrically connected with the movable end of potentiometer RP1, and a fixing end of potentiometer RP1 is through electricity R3 connection power supply VCC are hindered, another fixing end is grounded through resistance R4, and it is the first comparison circuit 8 that power supply can be adjusted by adjusting RP1 The first preset signals provided, the output terminal of the first comparison circuit 8 is electrically connected with the base stage of first switch part 10, wherein first opens The triode that part 10 is NPN shapes is closed, the emitter of first switch part 10 is grounded through resistance R5, the collector electricity of first switch part 10 The coil K1 of the first relay 12 is connected with, the coil K1 of the first relay 12 is electrically connected to power supply through the first limit switch 14 VCC, the normally opened contact K1-3 of the first relay 12 are connected across between the collector and emitter of first switch part 10, form self-locking Circuit, starting switch 23 are electrically connected between power supply VCC and the first limit switch 14.

The output terminal of second distance sensor 7 is electrically connected with the in-phase input end of the second amplifying circuit 21, the second amplification electricity The inverting input on road 21 is grounded through resistance R6, and electricity is electrically connected between the output terminal and reverse input end of the second amplifying circuit 21 Hinder R7, the output terminal of the second comparison circuit 9 is electrically connected with the in-phase input end of the second comparison circuit 9, the second comparison circuit 9 it is anti- Phase input terminal is electrically connected with the movable end of potentiometer RP2, and a fixing end of potentiometer RP2 is through resistance R8 connection power supply VCC, separately One fixing end is grounded through resistance R9, and the second default letter that power supply provides for the second comparison circuit 9 can be adjusted by adjusting RP2 Number, the output terminal of the second comparison circuit 9 is electrically connected with the base stage of second switch part 11, and wherein second switch part 11 is NPN shapes Triode, the emitter of second switch part 11 are grounded through resistance R10, and the collector of second switch part 11 is electrically connected with the second relay The coil K2 of device 13, the coil K2 of the second relay 13 are electrically connected to starting switch 23 away from power supply through the second limit switch 15 One end of VCC, the normally opened contact K2-3 of the second relay 13 are connected across between the collector and emitter of second switch part 11, shape Into self-locking circuit.

The output terminal of 3rd range sensor 16 is electrically connected with the in-phase input end of the 3rd amplifying circuit 22, the 3rd amplification electricity The inverting input on road 22 is grounded through resistance R11, is electrically connected between the output terminal and reverse input end of the 3rd amplifying circuit 22 Resistance R12, the output terminal of the 3rd comparison circuit 17 are electrically connected with the in-phase input end of the 3rd comparison circuit 17, the 3rd comparison circuit 17 inverting input is electrically connected with the movable end of potentiometer RP3, and a fixing end of potentiometer RP3 is through resistance R13 connections electricity Source VCC, another fixing end are grounded through resistance R14, and power supply provides for the 3rd comparison circuit 17 the can be adjusted by adjusting RP3 Three preset signals, the output terminal of the 3rd comparison circuit 17 is electrically connected with the base stage of the 3rd switch member 18, wherein the 3rd switch member 18 For the triode of NPN shapes, the emitter of the 3rd switch member 18 is grounded through resistance R15, the collector electrical connection of the 3rd switch member 18 There is a coil K3 of the 3rd relay 19, it is separate that the coil of the 3rd relay 19 through the 3rd limit switch is electrically connected to starting switch 23 One end of power supply VCC, two normally-closed contacts K3-1 and K3-2 of the 3rd relay 19 are serially connected with 14 He of the first limit switch respectively Second limit switch 15.

First range sensor 6 and second distance sensor 7 respectively the both sides of display 1 to user compared with its from The distance of body is detected, and front is nearer with the distance between user, and the value of output is bigger, and respectively through the first ratio Compared with 8 and second comparison circuit 9 of circuit compared with the first preset signals and the second preset signals, it is more than default letter in output valve Number when, the first range sensor 6 or second distance sensor 7 export corresponding first control signal or second control signal to lead Logical first switch part 10 or second switch part 11, when user is close to the first range sensor 6, first switch part 10 turns on, The coil K1 of first relay 12 obtains electric, normally opened contact K1-1 and K1-3 closure, normally-closed contact K1-2 disconnections, and motor 5 rotates forward, When user is close to second distance sensor 7, second switch part 11 turns on, the coil K2 of the second relay 13 obtain it is electric, often It opens contact K2-1 and K2-3 to be closed, normally-closed contact K2-2 is disconnected, and motor 5 inverts.

The normally opened contact K1-1 of first relay 12 is serially connected with the prograde circuit of motor 5, and the normally opened of the second relay 13 touches Point K2-1 is serially connected with the reversion circuit of motor 5, wherein the normally-closed contact K1-2 of the first relay 12 is serially connected with the second relay 13 Coil K2, the normally-closed contact K2-2 of the second relay 13 is serially connected with the coil K1 of the second relay 13, forms interlocking, reduce because Equal someone in front of first range sensor 6 and second distance sensor 7, and cause the rotating forward circuit of motor 5 and reversion circuit It is also turned on, so as to damage the situation of motor 5.

Specifically used process：When needing display 1 that user is followed to move, starting switch 23 is pressed, is existed in user When deviateing display 1 during walking about, the distance signal that the first range sensor 6 or second distance sensor 7 export is through putting After big after the first comparison circuit 8 or the second comparison circuit 9 compare, the first control signal or the second control letter of high level are exported Number so that corresponding first switch part 10 or second switch part 11 turn on, and then connect the forward or reverse circuit of motor 5, make Display 1 is obtained to move on guide rail 2.

The normally opened contact of first relay 12 and the second relay 13 is connected across first switch part 10 and second switch respectively Part 11 forms self-locking circuit, and after the first range sensor 6 or second distance sensor 7 leave user, motor 5 remains to continue It rotates, when display 1 moves to the front of the 3rd range sensor 16, the distance signal value of the 3rd comparison circuit 17 output is big In the 3rd preset signals, after the 3rd comparison circuit 17 compares, the 3rd comparison circuit 17 sends the 3rd control signal of high level And the 3rd switch member 18 is turned on, the coil K3 of the 3rd relay 19 obtains electric, is serially connected with first switch part 10 and second switch The normally-closed contact K3-1 and K3-2 of part 11 are disconnected, and motor 5 stops so that screen 101 is parked in the front of user, reduces User have left during the explanation after display 1, it is necessary to before going to display 1 required movement distance, improving makes With experience, explanation efficiency is improved.

The distance that first limit switch 14 and the second limit switch 15 slide display 1 on guide rail 2 limits, When display 1 slides into the end of guide rail 2, display 1 props up the first limit switch 14 or the second limit switch 15 carries out it It triggers so that it is disconnected, and so that the coil K1 of the first relay 12 or the coil K2 dead electricity of the second relay 13, disconnect motor 5 Rotating circuit, motor 5 stops, and reduces the situation that display 1 is caused to damage due to motor 5 is rotated further.

Claims (9)

1. a kind of mobile display device, it is characterized in that：Including display (1) and guide rail (2), the display (1), which is slided, to be connected Guide rail (2) is connected to, sprocket wheel (3) is provided at the both ends of the guide rail (2), chain (4) is engaged between the sprocket wheel (3), The display (1) is fixedly connected with chain (4), and the chain (4) is driven by motor (5), is provided on the display (1) According to the control circuit of the rotating of the position control motor (5) of the user in the front of display (1).

2. a kind of mobile display device according to claim 1, it is characterized in that：The control circuit includes the first distance Sensor (6), second distance sensor (7), the first comparison circuit (8), the second comparison circuit (9), first switch part (10), Two switch members (11), the first relay (12) and the second relay (13), first range sensor (6) and second distance pass Sensor (7) is respectively arranged at the both sides of display (1), and the user in front of it is detected to send corresponding distance letter Number, first comparison circuit (8) is concurrent compared with the first preset signals by the distance signal of the first range sensor (6) Go out first control signal, second comparison circuit (9) is by the distance signal and the second preset signals of second distance sensor (7) It is compared and sends second control signal, the first switch part (10) is in response to first control signal to turn on first switch Part (10), the second switch part (11) is in response to second control signal to turn on second switch part (11), first relay The coil tandem of device (12) is in first switch part (10), and the coil tandem of second relay (13) is in second switch part (11), the normally opened contact of first relay (12) is serially connected with the rotating forward circuit of motor (5), second relay (13) Normally opened contact is serially connected with the reversion circuit of motor (5).

3. a kind of mobile display device according to claim 2, it is characterized in that：The guide rail (2) close to first away from End set from sensor (6) has the first limit switch (14), in the guide rail (2) close to second distance sensor (7) End set has the second limit switch (15), and the both ends of the display (1) limit respectively with the first limit switch (14) and second Bit switch (15) contacts to trigger the first limit switch (14) and the second limit switch (15), first limit switch (14) first switch part (10) is serially connected with, second limit switch (15) is serially connected with second switch part (11).

4. a kind of mobile display device according to claim 2, it is characterized in that：The control circuit further include the 3rd away from From sensor (16), the 3rd comparison circuit (17) and the 3rd switch member (18), the 3rd range sensor (16) is arranged at aobvious Show the middle part of device (1), and the user in front of it is detected to send corresponding distance signal, the 3rd comparison circuit (17) distance signal of the 3rd range sensor (16) compared with the 3rd preset signals and is sent into the 3rd control signal, institute Stating the bridging of the 3rd switch member (18) has the normally opened contact of the 3rd relay (19), and the 3rd switch member (18) is in response to the 3rd control For signal processed to turn on the 3rd switch member (18), the coil tandem of the 3rd relay (19) is described in the 3rd switch member (18) Two normally-closed contacts of the 3rd relay (19) are serially connected with first switch part (10) and second switch part (11) respectively, and described first Switch member (10) bridges the normally opened contact for having the first relay (12), and second switch part (11) bridging has the second relay (13) normally opened contact.

5. a kind of mobile display device according to claim 2, it is characterized in that：One of first relay (12) Normally-closed contact is serially connected with the coil of the second relay (13), and a normally-closed contact of second relay (13) is serially connected with first The coil of relay (12).

6. a kind of mobile display device according to claim 2, it is characterized in that：First range sensor (6) with It is electrically connected with to amplify the first amplifying circuit (20) of distance signal between first comparison circuit (8), the second distance passes It is electrically connected with to amplify the second amplifying circuit (21) of distance signal between sensor (7) and the second comparison circuit (9).

7. a kind of mobile display device according to claim 2, it is characterized in that：The first switch part (10) and second Switch member (11) is triode.

8. a kind of mobile display device according to claim 2, it is characterized in that：It is provided with and opens on the display (1) Dynamic switch (23), the starting switch (23) are electrically connected between power supply and first switch part (10) and second switch part (11).

9. a kind of mobile display device according to claim 2, it is characterized in that：First range sensor (6) and The direction that second distance sensor (7) is respectively facing the both sides away from display (1) is set.