CN105403732A - Quartz flexible accelerometer capacitance sensor insulator lead wire and mounting structure - Google Patents
Quartz flexible accelerometer capacitance sensor insulator lead wire and mounting structure Download PDFInfo
- Publication number
- CN105403732A CN105403732A CN201510963535.3A CN201510963535A CN105403732A CN 105403732 A CN105403732 A CN 105403732A CN 201510963535 A CN201510963535 A CN 201510963535A CN 105403732 A CN105403732 A CN 105403732A
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- insulator
- overcoat
- wire
- hole
- quartz flexible
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/125—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by capacitive pick-up
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/0802—Details
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pressure Sensors (AREA)
Abstract
The invention discloses a quartz flexible accelerometer capacitance sensor insulator lead wire and a mounting structure. The lead wire comprises two binding posts and an insulation lining, wherein the two binding posts pass through the insulation lining. The insulation lining is a glass lining generated by use of a glass insulator sintering process, the insulation lining is externally sleeved by a jacket, and the insulation lining is sintered and fixed to the binding posts and the jacket through the glass insulator sintering process so as to form an integral body. The insulator lead wire is installed in an upper yoke mounting hole; the mounting hole in an upper yoke is a step hole, the jacket falls to the step of the step hole, and the portion between the outer wall of the jacket and the inner wall of a step large hole is coated with bonding glue so that the jacket is bonded to the step hole of the upper yoke. The preparation is simple, the process is mature, and the production efficiency, the yield, the insulation strength of an insulator and the precision of a sensor can be effectively improved.
Description
Technical field
The present invention relates to the improvement of insulator lead design, particularly inertial navigation, guidance and control system quartz flexible accelerometer capacitance signal sensor insulator lead-in wire and mounting structure, belong to quartz flexible accelerometer field.
Background technology
Quartz flexible accelerometer is a kind of dynamic balance pendulous accelerometer, there is good stability, precision be high, structure is simple, the easy feature such as miniaturization, be in the Navigation, Guidance and Control system of Aeronautics and Astronautics, navigation and various strategy/tactical weapon, apply to obtain a class accelerometer the most widely at present.
Quartz flexible accelerometer is primarily of the formation such as quality pendulum, capacitance signal sensor, electromagnetic torque device and servo circuit.Wherein, the golden film that the movable plate electrode of capacitance signal sensor (abbreviation capacitive transducer) is deposited by vacuum coating by quartz pendulous reed surface is formed, and static plate electrode is made up of upper lower yoke abrasive surface.Gone between by insulator, capacitance signal is drawn out to watch core outside, to be electrically connected with servo circuit.For capacitive transducer, insulator lead-in wire is extremely important, and its insulating property are directly connected to the precision of sensor, even can affect the work of sensor normal reliable.
Existing capacitive transducer insulator lead-in wire adopts the mode of resolution element perfusion bonded adhesives to complete, and namely makes insulating bushing 2 with pottery or glass material, makes binding post 1 with copper wire; During assembling, insulating bushing 2, binding post 1 and upper yoke 3 are poured into fixing by bonded adhesives 5, sees Fig. 1 and Fig. 2.
There is following shortcoming in existing mode:
1. pottery or glass insulation lagging material quality hard, easily collapse limit or break, processed finished products rate is low;
2. in order to the position of link post and lining, prevent bonded adhesives water clock, need special tooling and repeat to mend glue, efficiency of assembling is lower simultaneously;
3. repeatedly after high/low temperature circulation and temperature shock, because the thermal expansion coefficient difference of lining, binding post and bonded adhesives is comparatively large, bonded adhesives may shrinkage cracking, causes that binding post is loosening even to come off;
4. for increasing bonding fastness, be adhesively fixed after lining and binding post, all bonded adhesives is applied on whole insulating bushing surface, and bonded adhesives ftractures or there is bubble, easy adsorbing moisture, make the decreasing insulating between insulator binding post and between binding post and upper yoke, cause sensor output noise increase or produce zero drift slowly;
5. binding post is connected with lead-in wire by welding manner, and welding is generated heat and easily made bonded adhesives deliquescing around binding post, thus causes binding post to loosen, comes off.
Summary of the invention
For prior art above shortcomings, a kind of quartz flexible accelerometer capacitive transducer insulator is the object of the present invention is to provide to go between and mounting structure.The present invention makes simply, technical maturity, can effectively enhance productivity, yield rate and the dielectric strength of insulator and the precision of sensor.
To achieve these goals, the technical solution used in the present invention is as follows:
A quartz flexible accelerometer capacitive transducer insulator lead-in wire, comprise two binding posts and insulating bushing, two binding posts pass from insulating bushing; Described insulating bushing is the glass lining adopting glass insulator sintering process to generate, be set with overcoat outside insulating bushing, insulating bushing is sintered to fix with binding post, overcoat and forms an entirety while forming glass lining by described glass insulator sintering process.
Described overcoat and binding post material are and can cut down material 4J29.
A kind of quartz flexible accelerometer capacitive transducer insulator lead wire mounting structure, described insulator lead-in wire is aforesaid quartz flexible accelerometer capacitive transducer insulator lead-in wire; Insulator lead-in wire is arranged in yoke mounting hole; Mounting hole on upper yoke is stepped hole, and overcoat external diameter is between stepped hole hole diameter and diameter macropores; Overcoat drops on stepped hole step, applies bonded adhesives to be bonded in by overcoat in yoke stepped hole between outer casing outer wall and step macropore inwall.
Compared to existing technology, the present invention has following beneficial effect:
1, the present invention adopts glass insulator sintering process, lining, binding post, overcoat are sintered to fix formation assembly, do not re-use bonded adhesives, avoid bonding loosening, the obscission brought with the welding of binding post lead-in wire between lining and binding post, solid and reliable.
2, this structure binding post and overcoat all adopt and can cut down material 4J29, its thermal expansivity is close with thermal expansion coefficient of glass, the through hole simultaneously going up yoke adhesive bonding wrap is stepped hole, can realize the Leakless sealing with glass lining, improves accelerometer infrabar performance.
3, be glass insulator between binding post and between binding post and overcoat, insulating property are very good, and sensor output noise and zero drift obviously reduce.
4, do not need the special perfusion fixture of bonded adhesives in this Standard process, reduce cost, improve production efficiency.
Accompanying drawing explanation
Fig. 1-existing insulator lead-in wire scheme of installation.
Sectional view installed by Fig. 2-existing insulator lead-in wire.
Fig. 3-insulator lead-in wire scheme of installation of the present invention.
Sectional view installed by Fig. 4-insulator lead-in wire of the present invention.
Embodiment
See Fig. 3 and Fig. 4, upper as can be seen from figure, quartz flexible accelerometer capacitive transducer insulator lead wire mounting structure of the present invention, comprise two binding posts 1, glass insulator 2 and upper yoke 3, two binding posts 1 pass from insulating bushing 2, upper yoke 3 is provided with mounting hole, and insulating bushing 2 is arranged in mounting hole.In order to avoid the defect that bonded adhesives brings, the present invention is set with overcoat 4 outside insulating bushing 2, and insulating bushing 2 is for glass and be sintered to fix by glass sintering technique and binding post 1, overcoat 4 and formed an entirety.Change the mounting hole on upper yoke into stepped hole, overcoat external diameter is between stepped hole hole diameter and diameter macropores simultaneously; Overcoat drops on stepped hole step, adopts bonded adhesives 5 to be bonded in yoke stepped hole by overcoat 4 between overcoat 4 outer wall and step macropore inwall.
The present invention adopts glass insulator SINTERING TECHNOLOGY, binding post, overcoat is sintered to fix, and forms an assembly, is then bonded in yoke hole.Overcoat and binding post all adopt and can cut down material 4J29, close with glass expansion coefficient, improve sealing; The through hole simultaneously going up the bonding insulator of yoke changes stepped hole into, can realize the Leakless sealing with insulating bushing.Glass insulator is between this structure binding post and between binding post and overcoat, insulating property are very good, sensor output noise and zero drift obviously reduce, and also overcome original bonded structure and binding post may be caused to loosen the defect that even comes off, solid and reliable.Meanwhile, this new structure, does not need the special perfusion fixture of bonded adhesives, reduces cost, improve production efficiency in assembling process.
The above embodiment of the present invention is only for example of the present invention is described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here cannot give exhaustive to all embodiments.Every belong to technical scheme of the present invention the apparent change of amplifying out or variation be still in the row of protection scope of the present invention.
Claims (3)
1. a quartz flexible accelerometer capacitive transducer insulator lead-in wire, comprise two binding posts and insulating bushing, two binding posts pass from insulating bushing, it is characterized in that: described insulating bushing is the glass lining adopting glass insulator sintering process to generate, be set with overcoat outside insulating bushing, insulating bushing is sintered to fix with binding post, overcoat and forms an entirety while forming glass lining by described glass insulator sintering process.
2. quartz flexible accelerometer capacitive transducer insulator lead-in wire according to claim 1, is characterized in that: described overcoat and binding post material are and can cut down material 4J29.
3. a quartz flexible accelerometer capacitive transducer insulator lead wire mounting structure, described insulator lead-in wire is the quartz flexible accelerometer capacitive transducer insulator lead-in wire described in claim 1 or 2; Insulator lead-in wire is arranged in yoke mounting hole; It is characterized in that: the mounting hole on upper yoke is stepped hole, and overcoat external diameter is between stepped hole hole diameter and diameter macropores; Overcoat drops on stepped hole step, applies bonded adhesives to be bonded in by overcoat in yoke stepped hole between outer casing outer wall and step macropore inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963535.3A CN105403732A (en) | 2015-12-21 | 2015-12-21 | Quartz flexible accelerometer capacitance sensor insulator lead wire and mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963535.3A CN105403732A (en) | 2015-12-21 | 2015-12-21 | Quartz flexible accelerometer capacitance sensor insulator lead wire and mounting structure |
Publications (1)
| Publication Number | Publication Date |
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| CN105403732A true CN105403732A (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510963535.3A Pending CN105403732A (en) | 2015-12-21 | 2015-12-21 | Quartz flexible accelerometer capacitance sensor insulator lead wire and mounting structure |
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| CN (1) | CN105403732A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066405A (en) * | 2016-06-29 | 2016-11-02 | 中国电子科技集团公司第二十六研究所 | Quartz flexible accelerometer air-tight packaging structure |
| CN108502693A (en) * | 2018-05-18 | 2018-09-07 | 通力电梯有限公司 | The detection device that step for detecting escalator is lost |
| CN111350732A (en) * | 2018-12-21 | 2020-06-30 | 航天科工惯性技术有限公司 | Assembling device and assembling method for accelerometer excitation ring assembly |
| CN113030512A (en) * | 2019-12-25 | 2021-06-25 | 航天科工惯性技术有限公司 | Accelerometer and accelerometer gauge head and servo circuit connection method |
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-
2015
- 2015-12-21 CN CN201510963535.3A patent/CN105403732A/en active Pending
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066405A (en) * | 2016-06-29 | 2016-11-02 | 中国电子科技集团公司第二十六研究所 | Quartz flexible accelerometer air-tight packaging structure |
| CN108502693A (en) * | 2018-05-18 | 2018-09-07 | 通力电梯有限公司 | The detection device that step for detecting escalator is lost |
| CN111350732A (en) * | 2018-12-21 | 2020-06-30 | 航天科工惯性技术有限公司 | Assembling device and assembling method for accelerometer excitation ring assembly |
| CN111350732B (en) * | 2018-12-21 | 2021-12-31 | 航天科工惯性技术有限公司 | Assembling device and assembling method for accelerometer excitation ring assembly |
| CN113030512A (en) * | 2019-12-25 | 2021-06-25 | 航天科工惯性技术有限公司 | Accelerometer and accelerometer gauge head and servo circuit connection method |
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Application publication date: 20160316 |