CN112394195A - Quartz flexible accelerometer servo circuit and assembling method - Google Patents
Quartz flexible accelerometer servo circuit and assembling method Download PDFInfo
- Publication number
- CN112394195A CN112394195A CN202011270496.6A CN202011270496A CN112394195A CN 112394195 A CN112394195 A CN 112394195A CN 202011270496 A CN202011270496 A CN 202011270496A CN 112394195 A CN112394195 A CN 112394195A
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- pin
- rectangular connector
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- micro
- servo circuit
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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
- G01P15/0802—Details
Abstract
The invention discloses a servo circuit of a quartz flexible accelerometer and an assembling method, belonging to the field of microelectronics. According to the quartz flexible accelerometer servo circuit, the wire connection between the quartz flexible accelerometer servo circuit sensor heads is changed into the elastic contact pin micro rectangular connector connection, the quartz flexible accelerometer servo circuit does not need to reserve a through hole any more, the problems that the traditional quartz flexible accelerometer servo circuit is complex in operation and poor in air tightness in the assembling process of the quartz flexible accelerometer servo circuit and the quartz flexible accelerometer heads are solved, and the production efficiency and the reliability are improved. Aiming at the port of the meter head of the quartz flexible accelerometer, designing the positions of an elastic contact pin micro rectangular connector and a jack matched with the port; the servo circuit substrate of the quartz flexible accelerometer meets the requirement of electric connection between an electric connector and the circuit substrate; the quartz flexible accelerometer servo circuit shell meets the installation requirement of the elastic contact pin micro rectangular connector.
Description
Technical Field
The invention belongs to the field of microelectronics, and particularly relates to a quartz flexible accelerometer servo circuit and an assembling method.
Background
The quartz flexible accelerometer servo circuit is an important component of a quartz flexible accelerometer and is widely applied to the fields of inertial navigation and other acceleration measurement. The quartz flexible accelerometer is divided into a quartz flexible accelerometer servo circuit and a quartz flexible accelerometer gauge head, due to the industrial development direction, the quartz flexible accelerometer servo circuit and the quartz flexible accelerometer gauge head are usually produced by different manufacturers, and finally the quartz flexible accelerometer gauge head manufacturers complete assembly, and a bonding pad is reserved on the back of the quartz flexible accelerometer servo circuit and is connected with a corresponding port of the quartz flexible accelerometer gauge head through a flexible lead. In the assembly mode, a lead needs to penetrate through a through hole in a servo circuit of the quartz flexible accelerometer from a port of a meter head of the quartz flexible accelerometer to be connected to the back of the servo circuit of the quartz flexible accelerometer, multiple times of lead welding is needed, a through hole needs to be reserved in the circuit, and the problems of complex operation and poor air tightness exist.
Disclosure of Invention
The invention aims to solve the problems of complex operation and poor air tightness of a traditional quartz flexible accelerometer servo circuit in the process of assembling the traditional quartz flexible accelerometer servo circuit with a meter head of a quartz flexible accelerometer, and provides the quartz flexible accelerometer servo circuit and an assembling method.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a servo circuit of a quartz flexible accelerometer comprises a circuit substrate, a circuit shell, a ceramic cover plate, a two-pin elastic contact pin micro rectangular connector and a three-pin elastic contact pin micro rectangular connector;
two mounting holes are formed in the circuit substrate, two blind holes are formed in the corresponding position of the circuit shell, two bonding pads are distributed outside one mounting hole of the circuit substrate, and three bonding pads are distributed outside the other mounting hole of the circuit substrate;
the two-pin elastic contact pin micro-rectangular connector comprises a cylindrical base body, two connecting holes penetrate through the base body, second insulating glue used for sealing is arranged at the bottoms of the connecting holes, twist pins are arranged in the connecting holes, and 1 copper wire extending outwards is further arranged in each connecting hole;
the three-pin elastic contact pin micro-rectangular connector comprises a cylindrical base body, three connecting holes penetrate through the base body, second insulating glue used for sealing is arranged at the bottoms of the connecting holes, twist pins are arranged in the connecting holes, and 1 copper wire extending outwards is further arranged in each connecting hole;
the circuit board is arranged on the circuit shell, the ceramic cover plate is arranged on the circuit board, the two-pin elastic pin micro-rectangular connector is arranged in the mounting hole distributed with the two bonding pads, and two copper wires of the two-pin elastic pin micro-rectangular connector are respectively connected to the bonding pads; the three-pin elastic pin micro-rectangular connector is arranged in the mounting holes distributed with the three bonding pads, and three copper wires of the three-pin elastic pin micro-rectangular connector are respectively connected to the bonding pads.
Furthermore, three positioning steps are uniformly distributed on the periphery of the base body.
Further, the material of the substrate is polyphenylene sulfide.
Further, the diameter of the copper wire is 0.1 mm.
Further, the material of the circuit casing is 304# stainless steel.
The invention discloses an assembling method of a servo circuit of a quartz flexible accelerometer, which comprises the following steps:
1) bonding the circuit substrate to the circuit housing;
2) injecting insulating epoxy glue into the blind hole of the circuit shell through 2 mounting holes of the circuit substrate;
3) the two-pin elastic pin micro rectangular connector and the three-pin elastic pin micro rectangular connector are respectively inserted into the two-pin elastic pin micro rectangular connector and the three-pin elastic pin micro rectangular connector through 2 mounting holes of the circuit substrate;
4) when the insulating epoxy glue is cured and the two-pin elastic pin micro-rectangular connector and the three-pin elastic pin micro-rectangular connector are fixed, respectively welding copper wires on the two-pin elastic pin micro-rectangular connector and the three-pin elastic pin micro-rectangular connector on corresponding bonding pads;
5) and bonding the ceramic cover plate on the circuit substrate to complete the assembly. Compared with the prior art, the invention has the following beneficial effects:
according to the quartz flexible accelerometer servo circuit and the assembling method, the wire connection between the sensor heads of the quartz flexible accelerometer servo circuit is changed into the elastic contact pin micro rectangular connector connection, the quartz flexible accelerometer servo circuit does not need to reserve a through hole any more, the problems that the traditional quartz flexible accelerometer servo circuit is complex in operation and poor in air tightness in the assembling process of the quartz flexible accelerometer servo circuit and the quartz flexible accelerometer head are solved, and the production efficiency and the reliability are improved. Aiming at the port of the meter head of the quartz flexible accelerometer, designing the positions of an elastic contact pin micro rectangular connector and a jack matched with the port; the servo circuit substrate of the quartz flexible accelerometer meets the requirement of electric connection between an electric connector and the circuit substrate; the quartz flexible accelerometer servo circuit shell meets the installation requirement of the elastic contact pin micro rectangular connector.
Drawings
FIG. 1 is a schematic diagram of a two pin spring pin micro rectangular connector, wherein FIG. 1(a) is a cross-sectional view and FIG. 1(b) is a top view;
FIG. 2 is a schematic diagram of a three-pin spring pin micro rectangular connector, wherein FIG. 2(a) is a cross-sectional view and FIG. 2(b) is a top view;
FIG. 3 is a block diagram of the substrate of the servo circuit of the quartz flexure accelerometer of the present invention;
FIG. 4 is a block diagram of the housing of the servo circuit of the quartz flexure accelerometer of the present invention, wherein FIG. 4(a) is a cross-sectional view and FIG. 4(b) is a top view;
FIG. 5 is an exploded view of the servo circuit of the quartz flexure accelerometer of the present invention;
fig. 6 is a structural diagram of a servo circuit of a quartz flexible accelerometer of the invention, wherein fig. 6(a) is a top view and fig. 6(b) is a front view.
Wherein, 1-twist needle; 2-a copper wire; 3-first insulating glue; 4-insulating epoxy resin; and 5-second insulating glue.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The quartz flexible accelerometer servo circuit is provided with the elastic contact pin micro-rectangular connector, can be directly connected with the meter head of the quartz flexible accelerometer in an opposite insertion mode, has no through hole, greatly simplifies assembly operation and improves air tightness.
The invention is described in further detail below with reference to the accompanying drawings:
the elastic pin micro-rectangular connector comprises two types, and the appearance, the jack position, the material and the like of the elastic pin micro-rectangular connector are designed according to the port of the meter head of the quartz flexible accelerometer. Referring to fig. 1, fig. 1(a), fig. 1(b) is two needles elasticity contact pin little rectangular connector's cross-sectional view and plan view respectively, two needles elasticity contact pin little rectangular connector's base member is the cylinder form, the peripheral equipartition of base member has three location step, be equipped with two connecting holes in the base member, the connecting hole runs through the base member, the bottom of connecting hole is equipped with the second insulating cement 5 that is used for sealing, the interlude of connecting hole inwards is equipped with the mounting bracket, be equipped with the twist needle 1 on the mounting bracket, be equipped with 2 copper wires 2 on the mounting bracket, 2 corresponding base members departments of copper wire are equipped with the breach, copper wire 2 outwards extends through the breach, breach department is equipped with and is used for first insulating cement 3. Phi of copper wire 2 is 0.1 mm. The material of the substrate is polyphenylene sulfide which can resist high temperature of 230 ℃.
Referring to fig. 2, fig. 2(a) and fig. 2(b) are a cross-sectional view and a top view of a three-pin elastic pin micro-rectangular connector, which are different from the two-pin elastic pin micro-rectangular connector in that 3 connecting holes are formed in a base body, and 3 copper wires with the diameter of 0.1mm electrically connected with the 3 connecting holes are reserved.
Referring to fig. 3, fig. 3 is a structural diagram of a servo circuit substrate of the quartz flexible accelerometer of the invention; the circuit substrate is used for mounting components such as a chip, a capacitor, an elastic pin micro-rectangular connector and the like, two mounting holes are formed in the substrate, and 2 bonding pads are arranged around one mounting hole and used for being welded with copper wires of the two elastic pin micro-rectangular connectors; and 3 bonding pads are arranged around the other mounting hole and used for being welded with a copper wire of the three-pin elastic contact pin micro-rectangular connector.
Referring to fig. 4, fig. 4 is a structural diagram of a housing of a servo circuit of the quartz flexure accelerometer of the invention, wherein fig. 4(a) is a cross-sectional view and fig. 4(b) is a top view; circuit shell mainly used bears circuit substrate and outer pin, and 2 circular blind holes of circuit shell design in electric connector mounted position, and it has insulating epoxy glue to pre-inject during the circuit equipment in the blind hole, and the lower part of the little rectangular connector of elasticity contact pin passes substrate hole to shell blind hole, and blind hole and insulating epoxy glue help the little rectangular connector location of elasticity contact pin to increase the installation intensity of the little rectangular connector of elasticity contact pin. Housing material 304# stainless steel.
The assembling method comprises the following steps:
1) bonding the circuit substrate to the circuit housing;
2) injecting a proper amount of insulating epoxy glue into the blind hole of the shell through 2 mounting holes of the circuit substrate;
3) the two-pin elastic pin micro rectangular connector and the three-pin elastic pin micro rectangular connector are respectively inserted through 2 mounting holes of the circuit substrate, and meanwhile, the correct angle of the jack of the connector is noticed;
4) and after the insulating epoxy glue is solidified and the two-pin elastic pin micro-rectangular connector and the three-pin elastic pin micro-rectangular connector are reliably fixed, respectively welding copper wires on the two-pin elastic pin micro-rectangular connector and the three-pin elastic pin micro-rectangular connector on the corresponding bonding pads.
5) And bonding the ceramic cover plate on the circuit substrate to complete the assembly.
Referring to fig. 6, fig. 6 is a structural diagram of a servo circuit of a quartz flexible accelerometer of the present invention, and as can be seen from fig. 6(a) and 6(b), a circuit housing is disposed corresponding to a circuit substrate, mounting holes and blind holes of the circuit housing are disposed corresponding to blind holes of the circuit substrate, a protrusion on the circuit housing is disposed corresponding to a hole on the circuit substrate, a ceramic cover plate is disposed on the circuit substrate, and a two-pin elastic pin micro rectangular connector and a three-pin elastic pin micro rectangular connector are disposed in the mounting holes and blind holes of the circuit housing, respectively.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (6)
1. A servo circuit of a quartz flexible accelerometer is characterized by comprising a circuit substrate, a circuit shell, a ceramic cover plate, a two-pin elastic contact pin micro rectangular connector and a three-pin elastic contact pin micro rectangular connector;
two mounting holes are formed in the circuit substrate, two blind holes are formed in the corresponding position of the circuit shell, two bonding pads are distributed outside one mounting hole of the circuit substrate, and three bonding pads are distributed outside the other mounting hole of the circuit substrate;
the two-pin elastic contact pin micro-rectangular connector comprises a cylindrical base body, two connecting holes penetrate through the base body, second insulating glue (5) used for sealing is arranged at the bottoms of the connecting holes, twist pins (1) are arranged in the connecting holes, and 1 copper wire (2) extending outwards is further arranged in the connecting holes;
the three-pin elastic contact pin micro-rectangular connector comprises a cylindrical base body, three connecting holes penetrate through the base body, second insulating glue (5) used for sealing is arranged at the bottoms of the connecting holes, twist pins (1) are arranged in the connecting holes, and 1 copper wire (2) extending outwards is further arranged in the connecting holes;
the circuit board is arranged on the circuit shell, the ceramic cover plate is arranged on the circuit board, the two-pin elastic pin micro-rectangular connector is arranged in the mounting hole distributed with the two bonding pads, and two copper wires (2) of the two-pin elastic pin micro-rectangular connector are respectively connected to the bonding pads; the three-pin elastic pin micro-rectangular connector is arranged in the mounting holes distributed with the three bonding pads, and three copper wires (2) of the three-pin elastic pin micro-rectangular connector are respectively connected to the bonding pads.
2. The quartz flexure accelerometer servo circuit of claim 1, wherein three positioning steps are uniformly distributed on the periphery of the base.
3. The quartz flexure accelerometer servo circuit of claim 1, wherein the substrate material is polyphenylene sulfide.
4. The quartz flexure accelerometer servo circuit of claim 1, wherein the diameter of the copper wire (2) is 0.1 mm.
5. The quartz flexure accelerometer servo circuit of claim 1 wherein the circuit housing material is 304# stainless steel.
6. A method of assembling a servo circuit of a quartz flexure accelerometer according to any of claims 1-5, comprising the steps of:
1) bonding the circuit substrate to the circuit housing;
2) injecting insulating epoxy glue into the blind hole of the circuit shell through 2 mounting holes of the circuit substrate;
3) the two-pin elastic pin micro rectangular connector and the three-pin elastic pin micro rectangular connector are respectively inserted into the two-pin elastic pin micro rectangular connector and the three-pin elastic pin micro rectangular connector through 2 mounting holes of the circuit substrate;
4) when the insulating epoxy glue is cured and the two-pin elastic pin micro-rectangular connector and the three-pin elastic pin micro-rectangular connector are fixed, respectively welding copper wires on the two-pin elastic pin micro-rectangular connector and the three-pin elastic pin micro-rectangular connector on corresponding bonding pads;
5) and bonding the ceramic cover plate on the circuit substrate to complete the assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011270496.6A CN112394195B (en) | 2020-11-13 | 2020-11-13 | Quartz flexible accelerometer servo circuit and assembling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011270496.6A CN112394195B (en) | 2020-11-13 | 2020-11-13 | Quartz flexible accelerometer servo circuit and assembling method |
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| CN112394195A true CN112394195A (en) | 2021-02-23 |
| CN112394195B CN112394195B (en) | 2023-04-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922128A (en) * | 2021-10-29 | 2022-01-11 | 西安微电子技术研究所 | Structure and manufacturing method of miniature electric connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113922128A (en) * | 2021-10-29 | 2022-01-11 | 西安微电子技术研究所 | Structure and manufacturing method of miniature electric connector |
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| CN112394195B (en) | 2023-04-07 |
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