CN109701985A - A kind of automatic viewing device of finger laboratory hood - Google Patents
A kind of automatic viewing device of finger laboratory hood Download PDFInfo
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- CN109701985A CN109701985A CN201910074738.5A CN201910074738A CN109701985A CN 109701985 A CN109701985 A CN 109701985A CN 201910074738 A CN201910074738 A CN 201910074738A CN 109701985 A CN109701985 A CN 109701985A
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- compression spring
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- 230000007246 mechanism Effects 0.000 claims abstract description 19
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 14
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005284 excitation Effects 0.000 claims 1
- 230000000505 pernicious effect Effects 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 2
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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Abstract
The present invention relates to field of experiment equipment, more particularly to a kind of automatic viewing device of finger laboratory hood, its experimental ventilation hood is cabinet setting, and arbitrary side is provided with window, the window is equipped with form to be opened/closed, and the form is mounted at the window of the vent cabinet by switching mechanism；The form is equipped with the first infrared sensor, the controller of first infrared sensor and the switching mechanism is electrically connected, and it is an object of the invention to so that the form automatic work is avoided the problem that pernicious gas caused by closing not in time because of form leaks by control system.
Description
Technical field
The present invention relates to field of experiment equipment, and in particular to a kind of automatic viewing device of finger laboratory hood.
Background technique
The vent cabinet in laboratory provides the experimental situation of a ventilation, and the experiment object being placed in vent cabinet largely has
The article of malicious or irritant smell needs to close form door in time after the activation to prevent pernicious gas from leaking.However
In experimentation, often has and forget the case where closing form door, therefore cause the air quantity in vent cabinet that cannot reach setting
Value, and the body and environmental pollution that internal pernicious gas leaks to experimenter.
Summary of the invention
The purpose of the present invention is to provide a kind of automatic viewing device of finger laboratory hood, to solve above-mentioned back
The problem of pernicious gas caused by cannot in time closing vent cabinet form door in scape technology leaks.
To achieve the above object, the invention provides the following technical scheme: a kind of automatic form of finger laboratory hood
Device, vent cabinet is cabinet setting, and arbitrary side is provided with window characterized by comprising be installed on the window can
The form of opening and closing；The form is mounted at the window of the vent cabinet by switching mechanism；The form is far from described
The side of window is equipped with the first infrared sensor, and the controller of first infrared sensor and the switching mechanism electrically connects
It connects；The outside of any side of the vent cabinet is arranged in the controller.
Preferably, the form exterior bottom is equipped with handle, and the handle is equipped with manual switch, the manual switch and institute
State controller electric connection；The manual switch includes windowing key, closes window key and emergency stop key.
Preferably, including fixing the sliding rails of the window two sides vertically respectively, the two sides of the form are fixed with respectively
In the sliding block that the sliding rail is slidably matched；It further include the lead screw being vertically arranged from inside the sliding rail, the lead screw is equipped with driving
Motor, the sliding block are connected with the transmission nut with lead screw cooperation；The drive motor and the controller are electrically connected.
Preferably, first infrared sensor is fixed at side of the form far from the vent cabinet, is used for
Detect whether that living body is close；It further include second infrared sensor, second infrared sensor is fixed at described
Form bottom, for detecting whether have living body movement below the form, second infrared sensor and controller electricity
Property connection.
Preferably, the form bottom is also connected with touching item；It is set between the touching item and the form lower edge
There is touch switch, the touch switch and the controller are electrically connected.
Preferably, the controller and access control system are electrically connected；The access control system is equipped with RFID identification device.
Preferably, the controller is equipped with PLC interface, for communicating with external control devices.
Preferably, the switching mechanism of the form is equipped with travel switch, and the travel switch includes for detecting the view
Completely open first stop of window switchs and detects the second stop switch that the form completely closes, and first stop is opened
It closes and is electrically connected respectively with the controller with second stop switch；The first stop switch and second stop
Switch is respectively and fixedly installed to the upper and lower ends of the sliding rail, and first stop switch and second stop switch are equal
It is corresponding vertically with the sliding block.
Preferably, the travel switch includes the shell of pedestal and fastening on it, and the pedestal and shell form one
Hollow cavity, which is characterized in that the cavity is built-in with switch enclosure, and drive rod, the transmission are equipped on the switch enclosure
One end of bar is connected in push rod, and the drive rod other end is connected to the button worn on the base, the switch enclosure
It is inside respectively arranged with sliding block and locating piece, the sliding block is slidably arranged in the locating piece, the button and magnet exciting coil
Switch gearing, the electromagnet core being arranged in the magnet exciting coil is connected between the button and the drive rod, described
Front contact and back contact are respectively equipped in switch enclosure, being respectively equipped on the sliding block can contact with the front contact and back contact
Movable contact, sliding block described in one end face of the push rod are additionally provided with coil fixing support, the magnet exciting coil winding in the cavity
On the coil fixing support, copper sheathing is equipped in the magnet exciting coil, the other end of the copper sheathing is caught in institute with positioning ring groove
State magnet exciting coil；Protective case is equipped on the button, one end of the protective case is stuck in the pedestal；The switch enclosure
Middle part is equipped with arresting lever, and the arresting lever is vertical with the push rod, and the sliding block is logical equipped with what is be adapted to the arresting lever
Hole；Conducting wire is connected on the magnet exciting coil, the other end of the conducting wire is welded on the coil power supply terminal in the pedestal,
Terminal screw is installed on the coil power supply terminal；Stationary contact and wiring spiral shell are respectively equipped on the front contact and back contact
Silk；Front compression spring and rear compression spring rear compression spring are respectively equipped in the switch enclosure, the front compression spring and the rear compression spring rear compression spring are coaxial
Setting, the front compression spring are set between two movable contacts contacted respectively with the front contact and the back contact, institute
Rear compression spring rear compression spring is stated to be disposed therein between the movable contact and the inner wall of the switch enclosure；The shell, which is equipped with, to be used
In the groove of installation sealing ring, the sealing ring and the protective case are rubber material.
Beneficial effects of the present invention: by above-mentioned setting, the first infrared sensor can incude human body it is close with leave, example
Such as: electronic module probe being incuded by the human body infrared of model HC-SR501RD-624 to realize inducing function, when someone connects
When near-sighted window, the close signal of human body is passed to controller by the first infrared sensor, and controller control switching mechanism makes form
It opens.After human body is separate, the first infrared sensor can't detect the infrared ray that human body distributes, and controller controls opening/closing machine at this time
Structure makes form automatically into closed state.
Handle therein can be outer throwing or the setting of outwardly extending handrail shape, and windowing key and pass window on the handle are pressed
Key is arranged at the Impact direction of corresponding handle operation, therefore opening and closing can be reasonably triggered during operating handle compared with aspect
Mechanism carries out corresponding.And emergency stop key is then arranged in front of handle, convenient for during the automatic shutter of form emergent stopping regard
The on-off action of window terminates unexpected occur.In addition the handle can also be arranged for attacker's shape of indent, when handle is indent setting
When, it windowing key on the handle and closes window key and is respectively provided with the side for corresponding to the stress of handle operation in a groove.
Form can slide up and down by the sliding rail of window two sides to be cooperated with window, when needing to open form, passes through handle
Hand makes form slide upwards to open window, when needing to close form, form whereabouts can be sealed this by handle
Window, therefore the sliding rail as the constraint form direction of motion and range is mounted on window two sides, form corresponds to the guide rail point of two sides
Not She You sliding block cooperate with it.In order to provide driving force to form, lead screw and transmission nut on guide rail are mentioned as driving force
For mechanism, when control order drive motor rotary work, lead screw rotation, and slide block movement is driven by transmission nut, into
And promote form that movement is opened and closed, wherein the lead screw of two sides is to move synchronously, and guarantees that form lifting is smooth.
First infrared sensor is for detecting whether someone is close, and under auto state, when someone is close, form is automatic
It opens, people walks form and is automatically closed.And the second infrared sensor is for preventing having personnel to carry out to vent cabinet interior items
Form accidental switches off when operation, the trigger signal to the second infrared sensor of controller using the limited grade setting of highest,
Therefore no matter any situation after the second infrared sensor collects the infrared signal of human body, form all terminates out code.
Touching item therein has the scope of activities formed for trigger switch, can be realized by connecting rod articulated manner,
Or the linear bearing mode that is vertically arranged is realized, normal condition touching item hangs down under the action of gravity or spring force to be regarded
The bottom of window lower edge, in form dropping process, when touching item encounters the barriers such as the arm of people, touching item is blocked, into
And touch switch is triggered, when the signal of monitoring control devices to touch switch is, the operating of stopping drive motor immediately prevents form
Event is accidentally injured caused by whereabouts.
By access control system, the open and close of the form can be acted and be subject to permission, limit specific personnel's operation, thus
Avoid illegal invasion experimental project.Specific access control system can be using such as RFID mode, at that time for the operation of imparting permission
Person allots ID card, while can also be by characteristics of human body's identification technology such as fingerprint, iris, to improve security level.
Controller is equipped with PLC interface, for being communicated with external, programmable control equipment.To reach automation control
The function of management.
First stop switch and the second stop switch are for feeding back viewing window position signal to controller, when form is opened completely
The first stop switch is triggered by sliding block after opening, monitoring control devices stop drive motor operating after being triggered to the first stop switch,
And by window state recording mark at open state.In form closing process, since sliding block moves downward, contact stops to first
The triggering of point switch, therefore window state is marked as in movement by controller, and after form completely closes, sliding block triggering second
Stop switch, monitoring control devices stop drive motor operating after being triggered to the second stop switch, and window state is recorded and is marked
Remember into closed state.Window state label in controller can carry out window state to outside by output interface, such as PLC interface
Conveying, thus supervision of the edge to form.
Detailed description of the invention
Fig. 1 is front schematic diagram of the present invention；
Fig. 2 is side view of the present invention；
Fig. 3 is elevating mechanism cross-sectional view of the present invention；
Fig. 4 is that the present invention touches a schematic diagram；
Fig. 5 is travel switch schematic diagram of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention is described in detail.
Fig. 1, Fig. 2, Fig. 3, Fig. 4 are please referred to, a kind of automatic viewing device of finger laboratory hood, vent cabinet is cabinet
Setting, and arbitrary side is provided with window characterized by comprising it is installed on the form to be opened/closed of the window；The view
Window is mounted at the window of the vent cabinet by switching mechanism；The form is equipped with first far from the side of the window
The controller of infrared sensor, first infrared sensor and the switching mechanism is electrically connected；The controller setting exists
The outside of any side of vent cabinet.
By above-mentioned setting, the first infrared sensor 4 can incude human body it is close with leave, such as: pass through model HC-
The human body infrared induction electronic module of SR501RD-624 is popped one's head in realize inducing function, and when someone is close to form 3, first is red
The close signal of human body is passed to controller 6 by outer sensor 4, and controller 6, which controls switching mechanism 5, opens form 3.Work as human body
Far from after, the first infrared sensor 4 can't detect the infrared ray that human body distributes, and controller 6, which controls switching mechanism 5, at this time makes form
3 automatically into closed state.
As a preferred embodiment, 3 exterior bottom of form is equipped with handle 7, and the handle 7 is equipped with manual switch, described
Manual switch and the controller 6 are electrically connected；The manual switch includes that windowing key 9, pass window key 10 and emergency stop are pressed
Key.
Handle 7 therein can be outer throwing or the setting of outwardly extending handrail shape, windowing key 9 and pass on the handle 7
Window key 10 is arranged at the Impact direction that corresponding handle 7 operates, therefore can be compared with aspect reasonably during operating handle 7
Triggering switching mechanism 5 carries out accordingly.And emergency stop key is then arranged in 7 front of handle, convenient for during the automatic shutter of form 3
The on-off action of emergent stopping form 3 terminates unexpected occur.In addition the handle 7 can also be arranged for attacker's shape of indent, work as handle
When hand 7 is that indent is arranged, windowing key 9 and pass window key 10 on the handle 7 are respectively provided with corresponds to the operation of handle 7 in a groove
Stress side.
As a preferred embodiment, including fixing the sliding rails 12 of the window two sides, the two sides point of the form 3 vertically respectively
It is not fixed with the sliding block 13 being slidably matched in the sliding rail 12；It further include the lead screw being vertically arranged from inside the sliding rail 12
14, the lead screw 14 is equipped with drive motor 15, and the sliding block 13 is connected with the transmission nut with the lead screw 14 cooperation；The drive
Dynamic motor 15 is electrically connected with the controller 6.
Form 3 can slide up and down by the sliding rail 12 of window two sides to be cooperated with window, when needing to open form 3, is led to
Crossing handle 7 makes form 3 slide upwards to open window, when needing to close form 3, form 3 can be fallen by handle 7
To seal the window, therefore window two sides are mounted on as the sliding rail 12 for constraining 3 direction of motion of form and range, form 3 is corresponding
The guide rail of two sides is respectively equipped with sliding block 13 and cooperates with it.Lead screw 14 and transmission in order to provide driving force to form 3, on guide rail
Nut provides mechanism as driving force, and when 6 order 15 rotary work of drive motor of controller, lead screw 14 rotates, and passes through biography
Dynamic nut band movable slider 13 moves, and then promotes form 3 that movement is opened and closed, and wherein the lead screw 14 of two sides is to move synchronously, and protects
Card form 3 goes up and down smooth.
As a preferred embodiment, first infrared sensor 4 is fixed at the form 3 far from the vent cabinet 1
Side, for having detected whether that living body is close；It further include second infrared sensor 17, second infrared sensor 17
It is fixed at 3 bottom of form, for detecting whether 3 lower section of form has living body movement, second infrared sensing
Device 17 and the controller 6 are electrically connected.
First infrared sensor 4 is for detecting whether someone is close, and under auto state, when someone is close, form 3 is certainly
Dynamic to open, people walks form 3 and is automatically closed.And the second infrared sensor 17 is for preventing having personnel to 1 inside object of vent cabinet
Form 3 accidental switches off when product are operated, and controller 6 has the trigger signal of the second infrared sensor 17 using highest
Limit grade setting, therefore no matter any situation after the second infrared sensor 17 collects the infrared signal of human body, form 3 is all terminated
Out code.
As a preferred embodiment, 3 bottom of form is also connected with touching item 18；The touching item 18 and the view
Touch switch 19 is equipped between 3 lower edge of window, the touch switch 19 is electrically connected with the controller 6.
Touching item 18 therein has the scope of activities formed for trigger switch, can be real by connecting rod articulated manner
It is existing, or the linear bearing mode that is vertically arranged realizes that normal condition touches item 18 under the action of gravity or spring force
It hangs down in the bottom of 3 lower edge of form, in 3 dropping process of form, when touching item 18 encounters the barriers such as the arm of people, touches item
18 are blocked, and then trigger touch switch 19, when controller 6 monitors that the signal of touch switch 19 is to stop driving horse immediately
Up to 15 operating, event is accidentally injured caused by preventing form 3 from falling.
As a preferred embodiment, the controller 6 is electrically connected with access control system 20；The access control system 20 is equipped with RFID
Identifier.
By access control system 20, the open and close of the form 3 can be acted and be subject to permission, limit specific personnel's operation,
To avoid illegal invasion experimental project.Specific access control system 20 can be using such as RFID mode, at that time for assigning permission
Operator allot ID card, while can also be by characteristics of human body's identification technology such as fingerprint, iris, to improve security level.
As a preferred embodiment, the controller 6 is equipped with PLC interface 22, for carrying out with external, programmable control equipment
Communication.To reach the function of automation control management.
As a preferred embodiment, the switching mechanism 5 of the form 3 is equipped with travel switch, and the travel switch includes being used for
Detect the second stop switch that the completely open first stop switch 24 of the form 3 and the detection form 3 completely close
25, the first stop switch 24 is electrically connected with the controller 6 respectively with the second stop switch 25；Described first stops
Point switch 24 and the second stop switch 25 are respectively and fixedly installed to the upper and lower ends of the sliding rail 12, and described first
Stop switch 24 and the second stop switch 25 are vertical corresponding with the sliding block 13.
First stop switch 24 and the second stop switch 25 are used to feed back 3 position signal of form to controller 6, work as form
3 fully open after the first stop switch 24 triggered by sliding block 13, controller 6 monitors to stop after the first stop switch 24 is triggered
Drive motor 15 operates, and 3 state recording of form is marked as open state.In 3 closing process of form, due to sliding block 13 to
Lower movement, contacts triggering to the first stop switch 24, thus controller 6 by 3 status indication of form in movement, and work as form
After 3 completely close, sliding block 13 triggers the second stop switch 25, and controller 6 monitors to stop after the second stop switch 25 is triggered
Drive motor 15 operates, and 3 state recording of form is marked as closed state.3 status indication of form in controller 6 can pass through
Output interface, if PLC interface 22 carries out the conveying of 3 state of form to outside, thus supervision of the edge to form 3.
According to Fig. 5, as a preferred embodiment, travel switch includes the shell of pedestal 30 and tail portion back-off on it, pedestal
30 and shell form a hollow cavity, cavity is built-in with switch enclosure, and drive rod 32 wears and stretches out in switch enclosure and fall
It is buckled in push rod 42,32 other end of drive rod is buckled in the button being threaded through on pedestal 30, and cunning is respectively arranged in switch enclosure
Motion block and locating piece 34, sliding shoe are slidably arranged in locating piece 34, and the switch gearing of button and magnet exciting coil 36 is arranged in and encourages
Electromagnet core in magnetic coil 36 is connected between button and drive rod 32, and preceding touching has been respectively clamped into the open slot of switch enclosure
38 and back contact 39 are put, is respectively equipped with the movable contact 44 that can be contacted with front contact 38 and back contact 39, front contact 38 on sliding shoe
With stationary contact and terminal screw, one end face sliding shoe of push rod 42 are respectively equipped on back contact 39.Coil is additionally provided in cavity
Fixed frame, magnet exciting coil 36 are wrapped on coil fixing support, and copper sheathing, the other end positioning of copper sheathing are equipped in magnet exciting coil 36
Annular groove is caught in magnet exciting coil 36, and blocking fixes it, and protective case 40 is equipped on button, and one end of protective case 40 is stuck in snap ring
In pedestal 30.Pedestal 30, switch enclosure, arresting lever 41, locating piece 34, push rod 42, button and shell are preferably plastic material.It opens
It closes and is equipped with arresting lever 41 in the middle part of box, arresting lever 41 is vertical with push rod 42, and sliding shoe is logical equipped with what is be adapted to arresting lever 41
Hole.Arresting lever 41 is braked when can be urgent to sliding shoe.36 lead-out wire of magnet exciting coil is built in 30 bottom of pedestal, passes through switch enclosure
Bottom gap be connected on coil power supply terminal, the tension disc for pushing down conducting wire is additionally provided in cavity, is pacified on coil power supply terminal
Equipped with terminal screw.46 rear compression spring 46 of front compression spring 43 and rear compression spring is respectively equipped in switch enclosure, after front compression spring 43 and rear compression spring 46
Pressure spring 46 is coaxially disposed, and front compression spring 43 is set between two movable contacts 44 contacted respectively with front contact 38 and back contact 39,
46 rear compression spring 46 of rear compression spring is disposed therein between a movable contact 44 and the inner wall of switch enclosure.It is quiet equipped with can be changed in switch enclosure
The connecting plate of contact on-off, connecting plate are slideably positioned between 46 rear compression spring 46 of rear compression spring and movable contact 44.Change in switch enclosure
The on-off of corresponding contacts can be changed in the position of connecting plate.Shell is equipped with the groove for installing sealing ring, sealing ring and protective case
40 be rubber material.When equipment is faulty or needs disconnecting circuit, applied external force actuation button drives electromagnet core
Its built-in switch contact is disconnected to inside push rod 42 after displacement, when needing to be reset, external world's power supply magnet exciting coil 36, electromagnet
Iron core rebounds under the active force in magnetic field causes contact closure, to realize auto-reset function, instead of multiple by armstrong's patent
Position, more convenient operation, safety, flexible, applicability is stronger.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (9)
1. a kind of automatic viewing device of finger laboratory hood, vent cabinet is cabinet setting, and arbitrary side is provided with window
Mouthful characterized by comprising
It is installed on the form to be opened/closed of the window；
The form is mounted at the window of the vent cabinet by switching mechanism；
The form is equipped with the first infrared sensor, first infrared sensor and the opening and closing far from the side of the window
The controller of mechanism is electrically connected；The outside of any side of the vent cabinet is arranged in the controller.
2. the automatic viewing device of finger laboratory hood according to claim 1, it is characterised in that: outside the form
Side bottom is equipped with handle, and the handle is equipped with manual switch, and the manual switch and the controller are electrically connected；It is described manual
Switch includes windowing key, closes window key and emergency stop key.
3. the automatic viewing device of finger laboratory hood according to claim 2, it is characterised in that: including erecting respectively
The sliding rail of the window two sides is directly fixed, the two sides of the form are fixed with the sliding block being slidably matched in the sliding rail respectively；
Further include the lead screw being vertically arranged from inside the sliding rail, the lead screw is equipped with drive motor, the sliding block be connected with it is described
The transmission nut of lead screw cooperation；The drive motor and the controller are electrically connected.
4. the automatic viewing device of finger laboratory hood according to claim 3, it is characterised in that: described first is red
Outer sensor is fixed at side of the form far from the vent cabinet, for having detected whether that living body is close；Further include
Second infrared sensor, second infrared sensor is fixed at the form bottom, for detecting the form
Whether lower section has living body movement, and second infrared sensor and the controller are electrically connected.
5. the automatic viewing device of finger laboratory hood according to claim 4, it is characterised in that: the form bottom
Portion is also connected with touching item；Between the touching item and the form lower edge be equipped with touch switch, the touch switch with
The controller is electrically connected.
6. the automatic viewing device of finger laboratory hood according to claim 1, it is characterised in that: the controller
It is electrically connected with access control system；The access control system is equipped with RFID identification device.
7. the automatic viewing device of finger laboratory hood according to claim 1, it is characterised in that: the controller
Equipped with PLC interface, for being communicated with external control devices.
8. the automatic viewing device of finger laboratory hood according to claim 3, it is characterised in that: the form
Switching mechanism is equipped with travel switch, the travel switch include for detect the form completely open first stop switch with
And the second stop switch that the detection form completely closes, the first stop switch and second stop switch respectively with
The controller is electrically connected；The first stop switch and second stop switch are respectively and fixedly installed to the sliding rail
Upper and lower ends, and first stop switch with second stop switch with the sliding block it is corresponding vertically.
9. the automatic viewing device of finger laboratory hood according to claim 8, it is characterised in that: the stroke is opened
Closing includes the shell of pedestal and fastening on it, and the pedestal and shell form a hollow cavity, which is characterized in that described
Cavity is built-in with switch enclosure, and drive rod is equipped on the switch enclosure, and one end of the drive rod is connected in push rod, the biography
Lever other end is connected to the button worn on the base, and sliding block and locating piece, institute are respectively arranged in the switch enclosure
It states sliding block to be slidably arranged in the locating piece, the switch gearing of the button and magnet exciting coil is arranged in the magnet exciting coil
Interior electromagnet core is connected between the button and the drive rod, and front contact and rear touching are respectively equipped in the switch enclosure
Point is respectively equipped with the movable contact that can be contacted with the front contact and back contact, one end face institute of the push rod on the sliding block
Sliding block is stated, coil fixing support is additionally provided in the cavity, the magnet exciting coil is wrapped on the coil fixing support, the excitation
Copper sheathing is equipped in coil, the other end of the copper sheathing is caught in the magnet exciting coil with positioning ring groove；It is equipped on the button
Protective case, one end of the protective case are stuck in the pedestal；Arresting lever, the arresting lever are equipped in the middle part of the switch enclosure
Vertical with the push rod, the sliding block is equipped with the through-hole being adapted to the arresting lever；It is connected with conducting wire on the magnet exciting coil,
The other end of the conducting wire is welded on the coil power supply terminal in the pedestal, is equipped with wiring on the coil power supply terminal
Screw；Stationary contact and terminal screw are respectively equipped on the front contact and back contact；Front compression spring is respectively equipped in the switch enclosure
With rear compression spring rear compression spring, the front compression spring and the rear compression spring rear compression spring coaxial arrangement, the front compression spring be set to respectively with institute
It states between front contact and two movable contacts of back contact contact, the rear compression spring rear compression spring is disposed therein an institute
It states between movable contact and the inner wall of the switch enclosure；The shell is equipped with the groove for installing sealing ring, the sealing ring
It is rubber material with the protective case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910074738.5A CN109701985A (en) | 2019-01-25 | 2019-01-25 | A kind of automatic viewing device of finger laboratory hood |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910074738.5A CN109701985A (en) | 2019-01-25 | 2019-01-25 | A kind of automatic viewing device of finger laboratory hood |
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| CN109701985A true CN109701985A (en) | 2019-05-03 |
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| CN201910074738.5A Pending CN109701985A (en) | 2019-01-25 | 2019-01-25 | A kind of automatic viewing device of finger laboratory hood |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552100A (en) * | 2019-09-25 | 2019-12-10 | 鲁普耐特集团有限公司 | Fiber yarn and fiber rope relaxation setting equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Application publication date: 20190503 |