CN207460645U - The tables of controllable demonstration instrument - Google Patents

Abstract

The utility model discloses a kind of tables of controllable demonstration instrument, including stage body, it is characterised in that：Recess is equipped with accommodating chamber on the stage body, also it is hinged with to cover the cover board of the accommodating chamber on the stage body, lock uint is equipped between the cover forward end and the accommodating chamber, the cover board is equipped with slideway, it is slided in the slideway and is equipped with sliding block, the sliding block is connected with body, push the spring is equipped between the sliding block and the slideway, pressure pin is hinged between the body and the stage body, the accommodating chamber forepart, which is equipped with, to be connected and controls the control button of demonstration instrument, and the cover forward end is equipped with the control column with control button cooperation.The utility model is easy to use, simple, reliability is high, does not interfere with user's mood, ensure that the effect of teaching or speech and explanation.

Description

The tables of controllable demonstration instrument

Technical field

The utility model is related to a kind of demonstration instrument control technology more particularly to a kind of tables of controllable demonstration instrument.

Background technology

At present, give a lecture, explain and impart knowledge to students and all be unable to do without instruments, the especially meeting rooms such as projecting apparatus, computer and display instrument, religion The above-mentioned instrument configuration use in interior of room is more universal.But the interior of above-mentioned instrument uses the special instrument of big multi-configuration at present Power switch, when use need special switch can, not only circuit is cumbersome, but also using complicated, this is at dais It is very inconvenient in teaching or platform for the personnel of speech or explanation, user's mood is influenced, causes to impart knowledge to students or gives a lecture and explain Effect is deteriorated.

Utility model content

Technical problem to be solved in the utility model is：Provide it is a kind of it is easy to use, simple, reliability is high, will not User's mood is influenced, ensures the tables of the controllable demonstration instrument of teaching or speech and explanation effect.

In order to solve the above technical problems, the technical solution of the utility model is：The tables of controllable demonstration instrument, including platform Body, it is characterised in that：Recess is equipped with accommodating chamber on the stage body, is also hinged with to cover the accommodating chamber on the stage body Cover board, is equipped with lock uint between the cover forward end and the accommodating chamber, the cover board is equipped with slideway, is slided in the slideway Dynamic to be equipped with sliding block, the sliding block is connected with body, and push the spring, the body and institute are equipped between the sliding block and the slideway It states and pressure pin is hinged between stage body, the accommodating chamber forepart, which is equipped with, to be connected and control the control button of demonstration instrument, the cover board Front end is equipped with the control column with control button cooperation.

Overturning torsional spring is equipped with as preferred technical solution, between the cover board and the stage body.

As preferred technical solution, the both sides of the cover board are respectively equipped with the catch of the pluggable accommodating chamber.

As preferred technical solution, the lock uint is the snap lock tooth that is equipped with of the cover forward end, the receiving Chamber front inner wall is equipped with tooth socket corresponding with the snap lock tooth.

As preferred technical solution, breaker is connected on circuit between the control button and demonstration instrument, it is described Breaker includes concatenating main stationary contact in circuit respectively, and the operation handle is connected with operating shaft, the operation axis connection Have and have contact with, it is described have contact be connected with locking key, the locking key is connected with locking key resetting spring, the locking key be equipped with it is described The corresponding active contact of main stationary contact, the lower part having contact with are connected with the lever extended downwardly, and the lower section of the lever is equipped with The corresponding thermal trip for abutting against the lever；Magnetictrip is further included, the armature of the magnetictrip is located at the lever Lower section correspond to abut against the lever, the thermal trip and magnetictrip are serially connected in circuit, and circuit is also associated with owing Voltage trip device, the lower section that the armature of the under-voltage release is located at the lever correspond to and abut against the lever, the deficient electricity The armature of pressure buckle releaser is connected with armature resetting spring.

As preferred technical solution, the thermal trip includes concatenation heating wire in circuit, the heating wire top Equipped with the bimetal leaf that the lever is abutted against positioned at the lower section of lever correspondence.

As preferred technical solution, the lever following side be equipped with respectively with the armature of the magnetictrip, owe electricity Press the stop leg of the armature contact of buckle releaser.

The tables of controllable demonstration instrument with the above mentioned technical proposal including stage body, are recessed on the stage body Also it is hinged with to cover the cover board of the accommodating chamber, the cover forward end and the receiving equipped with accommodating chamber, on the stage body Lock uint is equipped between chamber, the cover board is equipped with slideway, is slided in the slideway and be equipped with sliding block, the sliding block is connected with casket Body is equipped with push the spring, pressure pin, the appearance is hinged between the body and the stage body between the sliding block and the slideway To receive chamber forepart be equipped with and connect and control the control button of demonstration instrument, and the cover forward end is equipped with and control button cooperation Control column.When not in use, accommodating chamber is covered by the cooperation of cover board and lock uint, the surface of entire tables is in just Normal uses flat state, the articles for use such as storage wireless mouse, wireless teacher's pointer, pen is can be used in body, control column compresses control and presses Button, demonstration instrument are disconnected with power supply；It is opened during use and overturns cover board, push the spring promotes sliding block to be moved up along slideway so that casket End moves up in vivo, rotates and moves up between body outer end and pressure pin, and storage wireless mouse, wireless teacher's pointer, pen etc. in body can be used Articles for use, and cover board overturning open after, control button and control column separate, demonstration instrument power on can normal use, very just Just, simply, reliability it is high, do not interfere with mood for the personnel of speech or explanation in dais teaching or platform, ensure teaching or Speech and explanation effect.

Description of the drawings

The following drawings is only intended in doing schematic illustration and explanation to the utility model, does not limit the model of the utility model It encloses.Wherein：

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the side view of the utility model；

Fig. 3 is the schematic diagram of the utility model breaker.

In figure：1- stage bodies；11- cover boards；12- accommodating chambers；13- bodies；14- pressure pins；15- slideways；16- sliding blocks；17- is promoted Spring；18- control columns；19- control buttons；110- lock uints；2- breakers；The main stationary contacts of 21-；22- operating shafts；23- takes Hook；24- locking keys；25- locking key resetting springs；26- actives contact；27- levers；28- magnetictrips；29- under-voltage releases； 210- armature resetting springs；211- heating wire；212- bimetal leafs；213- stops leg；3- demonstration instruments.

Specific embodiment

As depicted in figs. 1 and 2, the tables of demonstration instrument are can control, recess, which is equipped with, including stage body 1, on the stage body 1 accommodates Chamber 12 is also hinged on the stage body 1 to cover the cover board 11 of the accommodating chamber 12,11 front end of cover board and the receiving Lock uint 110 is equipped between chamber 12, the cover board 11 is equipped with slideway 15, is slided in the slideway 15 and be equipped with sliding block 16, institute It states sliding block 16 and is connected with body 13, push the spring 17, the body 13 and institute are equipped between the sliding block 16 and the slideway 15 It states and pressure pin 14 is hinged between stage body 1,12 forepart of accommodating chamber, which is equipped with, to be connected and controls the control button 19 of demonstration instrument 3, 11 front end of cover board is equipped with the control column 18 with the control button 19 cooperation.When not in use, cover board 11 and sealed dress are passed through It puts 110 cooperation to cover accommodating chamber 12, the surface of entire tables is in normally using flat state, can in body 13 For storing the articles for use such as wireless mouse, wireless teacher's pointer, pen, control column 18 compresses control button 19, and demonstration instrument 3 breaks with power supply It opens；It is opened during use and overturns cover board 11, push the spring 17 promotes sliding block 16 to be moved up along slideway 15 so that on 13 inner end of body It moves, rotates and move up between 13 outer end of body and pressure pin 14, the use such as storage wireless mouse, wireless teacher's pointer, pen in body 13 can be used Product, and cover board 11 overturning open after, control button 19 and control column 18 separate, demonstration instrument 3 power on can normal use, it is non- Often convenient and simple, reliability height does not interfere with mood for the personnel of speech or explanation in dais teaching or platform, protects Card teaching or speech and explanation effect.

As depicted in figs. 1 and 2, overturning torsional spring is equipped between the cover board 11 and the stage body 1, convenient for turning over for cover board 11 Turn.The both sides of the cover board 11 are respectively equipped with the catch of the pluggable accommodating chamber 12, convenient for cover board 11 and the envelope of accommodating chamber 12 Lid cooperation.The lock uint 110 is the snap lock tooth that 11 front end of cover board is equipped with, and is set in 12 front inner wall of accommodating chamber There is tooth socket corresponding with the snap lock tooth, snap lock tooth may be employed elastoplastic and be made or be made of elastic steel sheet.When So it can also realize locking action using other conventional locksets.

As shown in figure 3, breaker 2, the breaker are connected between the control button 19 and demonstration instrument 3 on circuit 2 include concatenating main stationary contact 21 and operating shaft 22 in circuit respectively, and the operating shaft 22, which is connected with, has contact with 23, described to have contact with 23 are connected with locking key 24, and the locking key 24 is connected with locking key resetting spring 25, and the locking key 24 is equipped with quiet with the master 21 corresponding active contact 26 of contact, 23 lower part of having contact with is connected with the lever 27 extended downwardly, under the lever 27 Side is equipped with the corresponding thermal trip for abutting against the lever 27；Further include magnetictrip 28, the armature of the magnetictrip 28 It is corresponded to positioned at the lower section of the lever 27 and abuts against the lever 27, the thermal trip and magnetictrip 28 are serially connected in circuit In, circuit is also associated with under-voltage release 29, and the lower section that the armature of the under-voltage release 29 is located at the lever 27 is right The lever 27 should be abutted against, the armature of the under-voltage release 29 is connected with armature resetting spring 210.

During work, powered on by control button 19 and powered for demonstration instrument 3, control operation axis 22, the main stationary contact Point 21 is series in circuit, and external force makes the locking key 24 overcome the pulling force of the locking key resetting spring 25, and the active is driven to touch Point 26 is closed with the main stationary contact 21, and is had contact with 23 by described and clasped the locking key 24, and breaker 2 is made to maintain closing position It puts.When 3 circuit overload of demonstration instrument, overload current, which flows through the thermal trip, makes it abut against 27 lower end of lever, described Lever 27 promote it is described have contact with 23 and the locking key 24 and separate, the locking key 24 under the action of the locking key resetting spring 25, And the active contact 26 and main 21 separating brake of stationary contact are driven, so as to cut off circuit.When short circuit occurs for 3 circuit of demonstration instrument During failure, the magnetictrip 28 generates enough electromagnetic forces and is attracted armature, and the armature of the magnetictrip 28 abuts against 27 lower end of lever, the lever 27 promote it is described have contact with 23 and the locking key 24 and separate, the locking key 24 is in the locking key Under the action of resetting spring 25, and the active contact 26 and main 21 separating brake of stationary contact are driven, so as to cut off circuit.When drilling When showing 3 Line under-voltage of instrument, the armature movement of the under-voltage release 29 abuts against 27 lower end of lever, and the lever 27 pushes away Have contact with 23 and the locking key 24 described in dynamic to separate, the locking key 24 drives institute under the action of the locking key resetting spring 25 Active contact 26 and main 21 separating brake of stationary contact are stated, so as to cut off circuit.Thermal trip plays the role of overload protection, institute State magnetictrip 28 and be used as short-circuit instantaneous protection, the under-voltage release 29 plays under-voltage protection, can disjunction it is larger Electric current, when 3 circuit of demonstration instrument breaks down, can automatic shutdown circuit, compared with common fuse, after troubleshooting, Only needing to close a floodgate again not replace component and can reclose circuit.The present embodiment design structure is reasonable, can realize It carries, short-circuit and under-voltage protection, can effectively ensure working performance, it is stable and reliable in work, protect personal safety as well as the property safety.

The thermal trip includes concatenation heating wire 211 in circuit, and 211 top of heating wire, which is equipped with, is located at the thick stick The lower section of bar 27 corresponds to the bimetal leaf 212 for abutting against the lever 27.When 3 circuit overload of demonstration instrument, overload current flows through The heating wire 211, so that heated be bent upwards of the bimetal leaf 212 abuts against 27 lower end of lever, the lever 27 Have contact with 23 and the locking key 24 described in promotion to separate, the locking key 24 drives under the action of the locking key resetting spring 25 The active contact 26 and main 21 separating brake of stationary contact, so as to cut off circuit.27 following side of lever be equipped with respectively with institute The stop leg 213 of the armature contact of the armature, under-voltage release 29 of magnetictrip 28 is stated, is conducive to the cloth of structure devices Office.Winding is formed equipped with copper wire spiral surrounding on the armature of the magnetictrip 28, the armature of the under-voltage release 29 Coil, said structure ensures working performance.

Claims (7)

1. the tables of controllable demonstration instrument, including stage body, it is characterised in that：Recess is equipped with accommodating chamber on the stage body, described It is also hinged with to cover the cover board of the accommodating chamber on stage body, sealed dress is equipped between the cover forward end and the accommodating chamber It puts, the cover board is equipped with slideway, is slided in the slideway and is equipped with sliding block, the sliding block is connected with body, the sliding block and institute It states and push the spring is equipped between slideway, pressure pin is hinged between the body and the stage body, the accommodating chamber forepart, which is equipped with, to be connected It connects and controls the control button of demonstration instrument, the cover forward end is equipped with the control column with control button cooperation.

2. the tables of controllable demonstration instrument as described in claim 1, it is characterised in that：It is set between the cover board and the stage body There is overturning torsional spring.

3. the tables of controllable demonstration instrument as described in claim 1, it is characterised in that：The both sides of the cover board are respectively equipped with can It is inserted into the catch of the accommodating chamber.

4. the tables of controllable demonstration instrument as described in claim 1, it is characterised in that：The lock uint is before the cover board The snap lock tooth being equipped with is held, the accommodating chamber front inner wall is equipped with tooth socket corresponding with the snap lock tooth.

5. it can control the tables of demonstration instrument as described in claim 1,2,3 or 4, it is characterised in that：The control button is with drilling Show and be connected with breaker between instrument on circuit, the breaker includes concatenating main stationary contact in circuit, connection behaviour respectively Make the operating shaft of handle, the operating shaft, which is connected with, has contact with, it is described have contact be connected with locking key, the locking key is connected with locking key Resetting spring, the locking key are equipped with active contact corresponding with the main stationary contact, and the lower part having contact with is connected with downwards The lever of extension, the lower section of the lever are equipped with the corresponding thermal trip for abutting against the lever；Magnetictrip is further included, it is described The lower section correspondence that the armature of magnetictrip is located at the lever abuts against the lever, the thermal trip and magnetictrip string It is connected in circuit, circuit is also associated with under-voltage release, and the armature of the under-voltage release is located under the lever Side's correspondence abuts against the lever, and the armature of the under-voltage release is connected with armature resetting spring.

6. the tables of controllable demonstration instrument as claimed in claim 5, it is characterised in that：The thermal trip includes being serially connected in electricity Heating wire in road, the heating wire top are equipped with the bimetal leaf for being corresponded to positioned at the lower section of the lever and abutting against the lever.

7. the tables of controllable demonstration instrument as claimed in claim 5, it is characterised in that：The lever following side be equipped with respectively with The stop leg of the armature contact of the armature, under-voltage release of the magnetictrip.