CN209387744U - A kind of device detecting the positive stiffness symmetry of quartz pendulous reed - Google Patents
A kind of device detecting the positive stiffness symmetry of quartz pendulous reed Download PDFInfo
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- CN209387744U CN209387744U CN201821527648.4U CN201821527648U CN209387744U CN 209387744 U CN209387744 U CN 209387744U CN 201821527648 U CN201821527648 U CN 201821527648U CN 209387744 U CN209387744 U CN 209387744U
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- capacitor plate
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- spring draw
- draw pin
- pedestal
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Abstract
The utility model relates to a kind of devices for detecting the positive stiffness symmetry of quartz pendulous reed, including pedestal, Top fastening screw, left capacitor plate, right capacitor plate, spring draw pin and insulating sleeve, left capacitor plate and right capacitor plate are symmetricly set on pedestal, and the installation region for placing pendulum to be measured is formed between two capacitor plates；One Top fastening screw of each side installation of pedestal, two Top fastening screws are pressed against respectively on the lateral wall of left and right capacitor plate；Two spring draw pins are installed by insulating sleeve in the top of left and right capacitor plate, and the resilient contact of the spring draw pin is located in the installation region of pendulum to be measured, and the connecting pin of the spring draw pin extends to the outside of capacitor plate.Capacitor Symmetry Detection and screening can be carried out to pendulum before assembly using after the device, avoid and cause to be assembled into the bias off-gage phenomenon after table since pendulum symmetry is bad, improve 10% or more survival rate of assembly, reduce production cost.
Description
Technical field
The utility model relates to accelerometer detection technique field, a kind of especially positive stiffness of detection quartz pendulous reed is symmetrical
The device of property.
Background technique
Quartz flexible accelerometer is a kind of high-precision sensor for measuring acceleration, is the important component of inertia system,
Quartz pendulous reed is the core part of accelerometer, and the performance quality of quartz pendulous reed has very big shadow to the final performance of accelerometer
It rings.The positive stiffness symmetry of quartz pendulous reed directly affects the bias size of accelerometer, high-precision accelerometer is needed tight
Lattice control bias size, but the prior art can not before assembly individually detect the positive stiffness symmetry of pendulum, existing
There is technology after forming accelerometer watch core component, can only just can detecte bias size in assembling process.But at this time due to pendulum
Piece has been bonded with torquer coil component and has carried out spun gold conducting welding, and bias is overproof to will lead to pendulum and torquer coil component
It scraps.The prior art is due to the overproof caused scrappage about 10% of bias after assembly.
Utility model content
The purpose of this utility model is that providing a kind of detection quartz pendulous reed positive and negative electricity in place of making up the deficiencies in the prior art
Hold the device of symmetry, the present apparatus individually can be detected and be screened to pendulum before quartz accelerometer assembles, and fill up acceleration
Count a blank in detection technique.
The purpose of this utility model is realized by following technological means:
A kind of device detecting the positive stiffness symmetry of quartz pendulous reed, it is characterised in that: including pedestal, Top fastening screw, a left side
A mounting groove, left capacitor plate are produced in capacitor plate, right capacitor plate, spring draw pin and insulating sleeve, the upper surface of pedestal
It is both placed in the mounting groove with right capacitor plate, left capacitor plate and right capacitor plate are symmetrical arranged, and two capacitor plates
Inner sidewall between form the installation region for placing pendulum to be measured；Produced on the left side wall and right side wall of pedestal one with
The threaded hole of mounting groove connection, two threaded holes are symmetrical arranged, and a Top fastening screw is respectively mounted in each threaded hole, and this two
The medial end of Top fastening screw is pressed against respectively on the lateral wall of left capacitor plate and right capacitor plate；Left capacitor plate and right electricity
Two spring draw pins are installed by insulating sleeve in the top for holding pole plate, and the inner end of the spring draw pin is resilient contact, the bullet
Property contact be located in the installation region of pendulum to be measured, the outboard end of the spring draw pin is connecting pin, which extends to capacitor
The outside of pole plate.
Moreover, the left and right capacitor plate is identical with the characteristic size of pendulum to be measured, thus coaxially fixed on pedestal
Position；The working face of left and right capacitor plate, that is, capacitance detecting face is identical with the coated electrode layer planform of pendulum to be measured.
It insulate, and is adhesively fixed on left and right capacitor plate respectively moreover, the spring draw pin passes through insulating sleeve
On left and right capacitor plate, the resilient contact of spring draw pin exposes capacitor plate 0.1mm-0.5mm.
Moreover, the outside connecting pin of the spring draw pin connects capacitance detecting instrument.
Moreover, the spring draw pin for being located at the left and right sides is symmetrical arranged.
The advantages and positive effects of the utility model are as follows:
1, the utility model is mainly by pedestal, Top fastening screw, left capacitor plate, right capacitor plate, spring draw pin and insulation
Casing is constituted, two capacitor plates clamping pendulums to be measured, on the resilient contact and pendulum to be measured of the spring draw pin on capacitor plate
Coated electrode layer contact and be connected, capacitance detecting instrument is connected with corresponding spring draw pin, can measure pendulum front and back sides respectively
The capacitance of coated electrode.A technology sky in the detection means of quartz accelerometer assembling quality is compensated for using the present apparatus
It is white, make it possible the preparatory detection of the positive stiffness of pendulum, ensure that the timeliness of accelerometer assembling quality.
2, the bad pendulum of positive stiffness symmetry can be shifted to an earlier date before accelerometer assembles using after the utility model
It rejects, has saved cost, improve the yield rate of accelerometer assembly.
3, utility model device is simple, and when use does not damage pendulum surface coating layer, easy to use, not only ensure that plus
The timeliness of speedometer assembling quality detection, while also improving production efficiency.
4, the utility model passes through experimental study, it is determined that the judgment criteria of capacitor symmetry makes the detection of pendulum performance
It is more accurate with screening.
5, this measuring device is put forward for the first time at home.After the device, capacitor can be carried out to pendulum before assembly
Symmetry Detection and screening avoid and cause to be assembled into the bias off-gage phenomenon after table since pendulum symmetry is bad, improve
10% or more survival rate is assembled, production cost is reduced, is applied in NJS/A type quartz accelerometer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the positive stiffness Symmetry Detection device of pendulum；
Fig. 2 is the schematic diagram that the positive stiffness Symmetry Detection device of pendulum is connect with capacitance detecting instrument；
Fig. 3 is the structural schematic diagram of the capacitor plate in the positive stiffness Symmetry Detection device of pendulum；
Fig. 4 is the cross-sectional view of Fig. 3；
Fig. 5 is the structural schematic diagram of the pendulum to be measured of the positive stiffness Symmetry Detection device of pendulum；
Fig. 6 is the cross-sectional view of Fig. 5.
Specific embodiment
Embodiment of the utility model will be described in detail below with reference to the attached drawings, it should be noted that the present embodiment is narrative
, it is not restrictive, protection scope of this utility model cannot be limited by this.
As shown in Figure 1, a kind of device for detecting the positive stiffness symmetry of quartz pendulous reed, including pedestal 2,1 and of Top fastening screw
8, a mounting groove is produced in left capacitor plate 3, right capacitor plate 7, spring draw pin 5 and insulating sleeve 6, the upper surface of pedestal, left
Capacitor plate and right capacitor plate are both placed in the mounting groove, and left capacitor plate and right capacitor plate are symmetrical arranged, and two
The installation region for placing pendulum 4 to be measured is formed between the inner sidewall of capacitor plate.Left and right capacitor plate and pendulum to be measured
Characteristic size is identical, and capacitor plate and pendulum are positioned on pedestal by outer diameter, to coaxially position on pedestal；Left and right electricity
The working face (i.e. capacitance detecting face) for holding pole plate is identical with the coated electrode layer planform of pendulum to be measured.
The threaded hole being connected to mounting groove is produced on the left side wall and right side wall of pedestal, two threaded holes are symmetrical
It is arranged, is respectively mounted a Top fastening screw in each threaded hole, the medial end of two Top fastening screws presses against left capacitor respectively
On the lateral wall of pole plate and right capacitor plate.That is: two Top fastening screws 1,8 screw by the threaded hole on pedestal and withstand left electricity
Hold pole plate, pendulum to be measured and right capacitor plate.
The top of left capacitor plate and right capacitor plate is respectively mounted two spring draw pins.The outside of each spring draw pin is same
Axle sleeve fills insulating sleeve, and spring draw pin is insulated with left and right capacitor plate respectively by insulating sleeve, and is adhesively fixed on left and right
On capacitor plate.The inner end of the spring draw pin is resilient contact, which is located in the installation region of pendulum to be measured
(that is: the resilient contact of spring draw pin exposes capacitor plate 0.1mm-0.5mm), the outboard end of the spring draw pin are connecting pin, should
Connecting pin extends to the outside of capacitor plate, in order to connect with capacitance detecting instrument 9.Left and right capacitor plate and pendulum pendulum pressure to be measured
Next, the resilient contact of spring draw pin is shunk, and the coated electrode layer on spring force and pendulum to be measured is contacted and is connected；In order to support
The spring force for the spring draw pin that disappears influences the deformation of pendulum, and the spring draw pin positioned at the left and right sides is symmetrical arranged, so that acting on
Perturbed force on pendulum front and back sides to be measured is cancelled out each other.Spring draw pin connect capacitance detecting instrument, the timesharing of capacitance detecting instrument respectively and
Spring draw pin connection on left and right capacitor plate, detects the positive and negative capacitance of corresponding pendulum to be measured.
The application method of the utility model are as follows:
The Top fastening screw 1 for first adjusting pedestal side arrives suitable position, is then close to Top fastening screw 1 and pedestal is put into left capacitor
Pole plate is sequentially placed into pendulum to be measured and right capacitor plate, is close to pedestal positioning respectively, while screwing Top fastening screw 8, guarantees left electricity
Hold pole plate, pendulum to be measured and right capacitor plate three to be adjacent to pedestal simultaneously and compressed by Top fastening screw 1,8, in general, according to
The design of quartz pendulous reed, the gap of capacity plate antenna are 0.02mm or so.
The positive stiffness Symmetry Detection device of pendulum is placed in the plane leveled in advance, capacitance detecting instrument is separately connected
With the respective springs draw pin on capacitor plate 3,7, the capacitance of pendulum front and back sides coated electrode can be measured respectively, also
Obtain the symmetry of the positive stiffness of pendulum.Screening according to symmetrical implementations, before being assembled to pendulum.
Claims (5)
1. a kind of device for detecting the positive stiffness symmetry of quartz pendulous reed, it is characterised in that: including pedestal, Top fastening screw, left electricity
Hold pole plate, right capacitor plate, spring draw pin and insulating sleeve, a mounting groove is produced in the upper surface of pedestal, left capacitor plate and
Right capacitor plate is both placed in the mounting groove, and left capacitor plate and right capacitor plate are symmetrical arranged, and two capacitor plates
The installation region for placing pendulum to be measured is formed between inner sidewall；One and peace are produced on the left side wall and right side wall of pedestal
The threaded hole of tankage connection, two threaded holes are symmetrical arranged, and a Top fastening screw is respectively mounted in each threaded hole, this two tops
The medial end of tight screw is pressed against respectively on the lateral wall of left capacitor plate and right capacitor plate；Left capacitor plate and right capacitor
Two spring draw pins are installed by insulating sleeve in the top of pole plate, and the inner end of the spring draw pin is resilient contact, the elasticity
Contact is located in the installation region of pendulum to be measured, and the outboard end of the spring draw pin is connecting pin, which extends to capacitance pole
The outside of plate.
2. a kind of device for detecting the positive stiffness symmetry of quartz pendulous reed according to claim 1, it is characterised in that: described
Left and right capacitor plate it is identical with the characteristic size of pendulum to be measured, to coaxially be positioned on pedestal；Left and right capacitor plate
Working face, that is, capacitance detecting face is identical with the coated electrode layer planform of pendulum to be measured.
3. a kind of device for detecting the positive stiffness symmetry of quartz pendulous reed according to claim 1, it is characterised in that: described
Spring draw pin pass through insulating sleeve and insulate respectively with left and right capacitor plate, and be adhesively fixed on left and right capacitor plate,
The resilient contact of spring draw pin exposes capacitor plate 0.1mm-0.5mm.
4. a kind of device for detecting the positive stiffness symmetry of quartz pendulous reed according to claim 1, it is characterised in that: described
Spring draw pin outside connecting pin connect capacitance detecting instrument.
5. a kind of device for detecting the positive stiffness symmetry of quartz pendulous reed according to claim 1, it is characterised in that: be located at
The spring draw pin of the left and right sides is symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527648.4U CN209387744U (en) | 2018-09-19 | 2018-09-19 | A kind of device detecting the positive stiffness symmetry of quartz pendulous reed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527648.4U CN209387744U (en) | 2018-09-19 | 2018-09-19 | A kind of device detecting the positive stiffness symmetry of quartz pendulous reed |
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| CN209387744U true CN209387744U (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821527648.4U Active CN209387744U (en) | 2018-09-19 | 2018-09-19 | A kind of device detecting the positive stiffness symmetry of quartz pendulous reed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049849A (en) * | 2021-01-08 | 2021-06-29 | 中国船舶重工集团公司第七0七研究所 | Flexible accelerometer pendulous reed temperature performance test method and system |
-
2018
- 2018-09-19 CN CN201821527648.4U patent/CN209387744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049849A (en) * | 2021-01-08 | 2021-06-29 | 中国船舶重工集团公司第七0七研究所 | Flexible accelerometer pendulous reed temperature performance test method and system |
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