CN207730857U - A kind of bimetallic contact formula test device and button switch - Google Patents
A kind of bimetallic contact formula test device and button switch Download PDFInfo
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- CN207730857U CN207730857U CN201820116197.9U CN201820116197U CN207730857U CN 207730857 U CN207730857 U CN 207730857U CN 201820116197 U CN201820116197 U CN 201820116197U CN 207730857 U CN207730857 U CN 207730857U
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Abstract
The utility model provides a kind of bimetallic contact formula test device, described device includes button switch, detection circuit and processor, the button switch includes the first contact and the second contact, first contact is connect with external low-impedance voltage source, second contact is connect with the detection signal input part of the detection circuit, and the detection signal output end of the detection circuit is connect with the detection signal input part of the processor.The utility model also proposed a kind of button switch.The button switch of contact is used in test device described in the utility model, elastic deformation or displacement process are not present during the work time, be not in frequently to use caused structural failure or failure, the service life for substantially increasing switch, to ensure that job stability, reliability and the durability of human body antistatic comprehensive tester complete machine.
Description
Technical field
The utility model is related to antistatic testing fields more particularly to a kind of bimetallic contact formula test device and button to open
It closes.
Background technology
Human body antistatic comprehensive tester is generally located on antistatic workspace entrance, is whether tester correctly wears
Antistatic tool, the instrument and equipment for whether reaching electrostatic leakage resistance requirement.
Human body antistatic comprehensive tester currently on the market is substantially using mechanically the pressing with spring of metal
Button.So that switch internal spring, reed etc. is deformed upon or displacement by pressed by external force, make switch movable contact point and stationary contact point contact from
And trigger test circuit.The course of work of mechanical contact switch depends on the deformation and reset of elastomeric element, and frequently using will
Lead to elastic construction failure, damage or be difficult to reset, and then mechanical contact is caused to switch cisco unity malfunction.Therefore, mechanical
Touch switch has the limitation of access times.Human body antistatic comprehensive tester in actual use, staff
It is both needed to be detected into antistatic workspace, the mechanical contact switch of comprehensive tester is frequently pressed/bounced, and frequency is used
Numerous and access times are huge, often result in complete machine and are forced to reprocess because of mechanical botton switching damage.
Utility model content
One of to solve above-mentioned technical problem, the utility model provides a kind of bimetallic contact formula test device.It is described
Device includes button switch, detection circuit and processor, and the button switch includes the first contact and the second contact, and described first
Contact is connect with external low-impedance voltage source, and second contact is connect with the detection signal input part of the detection circuit, institute
The detection signal output end for stating detection circuit is connect with the detection signal input part of the processor.
Preferably, described device further includes insulation shell, and first contact and the second contact are arranged at the insulation
On shell.
Preferably, described device further includes first resistor, and one end of the first resistor connects the second contact and institute simultaneously
State detection circuit detection signal input part, the other end ground connection of the first resistor.
Preferably, first contact and second contact are cylinder or cuboid.
One of to solve above-mentioned technical problem, the utility model additionally provides a kind of button switch, the button switch packet
The first contact and the second contact are included, first contact is connect with external low-impedance voltage source, and second contact is examined with external
Slowdown monitoring circuit connects.
Preferably, the button switch further includes insulation shell, and first contact and the second contact are arranged at described
On insulation shell.
Preferably, first contact and second contact are cylinder or cuboid.
The beneficial effects of the utility model are as follows：
The button switch that contact is used in test device described in the utility model, is not present elasticity during the work time
Deformation or displacement process are not in frequently to use caused structural failure or failure, and substantially increase switch uses the longevity
Life, to ensure that job stability, reliability and the durability of human body antistatic comprehensive tester complete machine.
Meanwhile tester's finger switchs detection circuit of directly setting out by contact button, is not integrated with human body antistatic
The measuring loop of tester is directly connected to, the influence so as to avoid contact resistance to test result.In addition, the utility model institute
Stating device only can just be connected after tester's contact button switch, open new primary test, respond sensitive reliable.It is not present
Blocked after mechanical switch is pressed cannot restore, bounce caused by unusual condition.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is the principle schematic of button switch described in the utility model；
Fig. 2 is a kind of appearance schematic diagram of the first contact described in the utility model and the second contact；
Fig. 3 is another appearance schematic diagram of the first contact described in the utility model and the second contact；
Fig. 4 is another appearance schematic diagram of the first contact described in the utility model and the second contact；
Fig. 5 is the principle schematic of bimetallic contact formula test device described in the utility model.
Specific implementation mode
In order to make the technical scheme in the embodiment of the utility model and advantage be more clearly understood, below in conjunction with attached drawing to this
The exemplary embodiment of utility model is described in more detail, it is clear that described embodiment is only the utility model
A part of the embodiment, rather than the exhaustion of all embodiments.It should be noted that in the absence of conflict, this practicality is new
The feature in embodiment and embodiment in type can be combined with each other.
Embodiment 1
As shown in Figure 1, present embodiments providing a kind of button switch, the button switch is applied to be integrated in human body antistatic
In tester, antistatic test job is carried out for starting the human body antistatic comprehensive tester.
The button switch includes the first contact and the second contact, and first contact connects with external low-impedance voltage source
It connects, second contact is connect with outer detecting circuit.
Specifically, two contacts of the button switch described in the present embodiment are metal material, conducting function is made it have.
First contact portion low-impedance voltage source, the second contact portion detection circuit, the detection circuit can be voltage detecting circuit
Or current detection circuit is one such, two kinds of detection circuits and can also deposit.First contact and the are contacted when there is finger
When two contacts, human body resistance will establish an access between the first contact and the second contact, at this point, the second contact and detection
Voltage or electric current between circuit will change a lot, and this variation will be detected by voltage or current detection circuit
It arrives, the state detected can be with processor in announcing circuit, such as CPU or MCU etc., to start primary new measurement.The
Access electrode of one contact as human body.Since low-impedance voltage source is the low impedance source of constant voltage, so flowing into human body
Electric current is not influenced by finger contact detection circuit.
The first contact and the second contact of button switch described in the present embodiment can be designed to diversified forms, such as rectangular
Body or cylinder etc..Its main feature is that being insulation between two contacts, and it is fixed by the carrier with insulation performance.This
Pad is all flowed out for being welded in circuit in two contacts.The appearance forrns of first contact and the second contact can be a variety of
Various, as shown in Figures 2 to 4, shown in Fig. 2 is two semicircular shapes, and Fig. 3 show the shape of concentric circles, shown in Fig. 4
For the shape of concentric ring.
Embodiment 2
As shown in figure 5, the present embodiment proposes a kind of bimetallic contact formula test device, described device include button switch,
Detection circuit and processor, the button switch include the first contact and the second contact, first contact and external Low ESR
Voltage source connects, and second contact is connect with one end of the detection signal input part of the detection circuit and first resistor, institute
The other end ground connection of first resistor is stated, the detection signal output end of the detection circuit is inputted with the detection signal of the processor
End connection.
Specifically, two contacts of the button switch described in the present embodiment are metal material, conducting function is made it have.
First contact portion low-impedance voltage source, the second contact portion detection circuit, the detection circuit can be voltage detecting circuit
Or current detection circuit is one such, two kinds of detection circuits and can also deposit.First contact and the are contacted when there is finger
When two contacts, human body resistance will establish an access between the first contact and the second contact, at this point, the second contact and detection
Voltage or electric current between circuit will change a lot, and this variation will be detected by voltage or current detection circuit
It arrives, the state detected can be with processor in announcing circuit, such as CPU or MCU etc., to start primary new measurement.The
Access electrode of one contact as human body.Since low-impedance voltage source is the low impedance source of constant voltage, so flowing into human body
Electric current is not influenced by finger contact detection circuit.
The first contact and the second contact of button switch described in the present embodiment can be designed to diversified forms, such as rectangular
Body or cylinder etc..Its main feature is that being insulation between two contacts, and it is fixed by the carrier with insulation performance.This
Pad is all flowed out for being welded in circuit in two contacts.The appearance forrns of first contact and the second contact can be a variety of
Various, as shown in Figures 2 to 4, shown in Fig. 2 is two semicircular shapes, and Fig. 3 show the shape of concentric circles, shown in Fig. 4
For the shape of concentric ring.
Test device described in the utility model and button switch can effectively avoid opening because of original mechanical contact
It closes work delay caused by damage to reprocess with complete machine, improves durability and the use of human body antistatic comprehensive tester button switch
Service life.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (7)
1. a kind of bimetallic contact formula test device, which is characterized in that described device includes button switch, detection circuit and processing
Device, the button switch include the first contact and the second contact, and first contact is connect with external low-impedance voltage source, described
Second contact is connect with the detection signal input part of the detection circuit, the detection signal output end of the detection circuit with it is described
The detection signal input part of processor connects.
2. the apparatus according to claim 1, which is characterized in that described device further includes insulation shell, first contact
It is arranged on the insulation shell with the second contact.
3. the apparatus according to claim 1, which is characterized in that described device further includes first resistor, the first resistor
One end connect the second contact and the detection circuit simultaneously and detect signal input part, the other end ground connection of the first resistor.
4. device according to any one of claims 1 to 3, which is characterized in that first contact and second contact
For cylinder or cuboid.
5. a kind of button switch, which is characterized in that the button switch includes the first contact and the second contact, first contact
It is connect with external low-impedance voltage source, second contact is connect with outer detecting circuit.
6. button switch according to claim 5, which is characterized in that the button switch further includes insulation shell, described
First contact and the second contact are arranged on the insulation shell.
7. button switch according to claim 5 or 6, which is characterized in that first contact and second contact are
Cylinder or cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820116197.9U CN207730857U (en) | 2018-01-23 | 2018-01-23 | A kind of bimetallic contact formula test device and button switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820116197.9U CN207730857U (en) | 2018-01-23 | 2018-01-23 | A kind of bimetallic contact formula test device and button switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207730857U true CN207730857U (en) | 2018-08-14 |
Family
ID=63083291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820116197.9U Active CN207730857U (en) | 2018-01-23 | 2018-01-23 | A kind of bimetallic contact formula test device and button switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207730857U (en) |
-
2018
- 2018-01-23 CN CN201820116197.9U patent/CN207730857U/en active Active
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