CN210464357U - Pointing stick strain gauge - Google Patents
Pointing stick strain gauge Download PDFInfo
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- CN210464357U CN210464357U CN201921663259.9U CN201921663259U CN210464357U CN 210464357 U CN210464357 U CN 210464357U CN 201921663259 U CN201921663259 U CN 201921663259U CN 210464357 U CN210464357 U CN 210464357U
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- strain gauge
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- gage
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Abstract
The utility model discloses a track point strain gauge, which comprises a strain base, wherein the strain base is in a shape of a Chinese character 'tu', a support column is arranged at the center above the strain base, and a first strain gauge, a fourth strain gauge, a third strain gauge and a second strain gauge are arranged on the upper, lower, left and right sides of the support column; the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are respectively provided with two joints, the two joints are respectively arranged on two sides of the strain gauge, and a first bonding pad, a second bonding pad, a third bonding pad, a fourth bonding pad, a fifth bonding pad and a sixth bonding pad are sequentially bonded below the substrate from right to left; the joint of the upper side of the second strain gauge is connected with the first pad through a silver wire, the joint of the lower side and the right side of the second strain gauge is connected with the second pad through a silver wire, the joint of the left side of the fourth strain gauge is connected with the third pad through a silver wire, the joint of the lower side of the third strain gauge is connected with the fourth pad through a silver wire, the joint of the upper side of the third strain gauge and the joint of the left side of the first strain gauge are connected with the fifth pad through a silver wire, and the joint of the right side of the first strain gauge is connected.
Description
Technical Field
The utility model relates to a special type foil gage technical field specifically is a track point foil gage.
Background
In the prior art, a single sheet or a right-angle sheet is used as a material in the design of a pointing stick and is attached to a PCB (printed circuit board) elastomer to form a bridge for testing. 120 ohm strain gauge is selected as the strain gauge resistor. The surface welding spot is welded manually, and the reliability, consistency, protection and the like of the welding spot are relatively poor. The existing pointing stick often has the phenomena of drifting, inaccurate pointing and the like. The manual wind identification patch is difficult to position accurately, and the problems of finger deviation and the like can be caused. The 120 ohm strain gauge has high energy consumption and poor signal. The manual welding of solder joints requires higher technical and empirical support of operators, and the consistency and the batch reliability of the manual welding need to be considered.
SUMMERY OF THE UTILITY MODEL
The technical insufficiency that exists to the aforesaid, the utility model aims at providing a track point foil gage to solve the problem that proposes in the background art.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a pointing stick foil gage, including foil gage one, foil gage two, foil gage three, foil gage four, basement, support column, locating hole, pad one, pad two, pad three, pad four, pad five and pad six, the basement is "protruding" font slice, basement top center department is equipped with the support column, the top of support column is equipped with foil gage one, the right side of support column is equipped with foil gage two, the left side of support column is equipped with foil gage three, the below of support column is equipped with foil gage four, foil gage one, foil gage two, foil gage three and foil gage four all fix in the basement through the bonding mode, foil gage one, foil gage two, foil gage three and foil gage four are the cross and distribute, and the angle is 90 between two adjacent foil gages, angle offset +/-0.3, foil gage one, foil gage two, Grid wires of the third strain gauge and the fourth strain gauge are perpendicular to the supporting columns.
The first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are respectively provided with two joints, and the two joints are respectively arranged on two sides of the strain gauges. Wherein two joints of the first strain gauge and the fourth strain gauge are positioned on the left side and the right side of the strain gauge, and two joints of the second strain gauge and the third strain gauge are positioned on the upper side and the lower side of the strain gauge.
A first bonding pad, a second bonding pad, a third bonding pad, a fourth bonding pad, a fifth bonding pad and a sixth bonding pad are sequentially bonded below the substrate from right to left;
the connector of the upside of the second strain gauge passes through the first silver wire connection pad, the connector of the downside and the right side of the second strain gauge passes through the second silver wire connection pad, the connector of the four left sides of the strain gauge passes through the third silver wire connection pad, the connector of the three downside of the strain gauge passes through the fourth silver wire connection pad, the three upside of the strain gauge and the connector of the one left side of the strain gauge pass through the fifth silver wire connection pad, the connector of the one right side of the strain gauge passes through the sixth silver wire connection pad, and the first pad, the second pad, the third pad, the fourth pad, the fifth pad and the sixth pad are all connected with the silver wire and adopt laser spot welding.
The size, the dimension and the resistance of the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are the same, the dimension of each strain gauge is 1.62mm x 1.65mm, and therefore the width of the grid wire on each strain gauge is 1.62 mm. The resistance of strain gage one is 320 ohms.
Preferably, the thicknesses of the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are all 0.1 mm.
Preferably, the length L of the substrate is 13.9 mm.
Preferably, the width d2 of the lower portion of the base is 10.5 mm.
Preferably, the width d3 of the upper portion of the base is 6.6 mm.
Preferably, the length d1 from the first right side of the pad to the sixth left side of the pad is 8.2 mm.
Preferably, the diameter R of the positioning hole is 1.5 mm.
Preferably, the vertical distance h between the middle part of the bonding pad and the center of the positioning hole is 4.07 mm.
Preferably, the width d4 of the first pad is 0.7 mm.
Preferably, the distance d5 between the first pad and the second pad is 0.8 mm.
The beneficial effects of the utility model reside in that:
(1) the utility model discloses a track point foil gage does not adopt conventional pad structure, but adopts the soft board basement, draws forth with the silver-colored line, and the welding of silver-colored line and pad adopts tin spraying laser spot welding, and the back processing procedure of being convenient for is used, and laser tin spraying electric welding is extremely low to pad and joint injury, and the far superior conventional welding of reliability and uniformity.
(2) And (3) directly opening the die to manufacture the strain gauge, wherein the angle between two adjacent strain gauges is required to be 90 degrees, and the angle offset is +/-0.3 degrees. Avoiding the position deviation caused by the offset of the strain gauge.
(3) The strain gauge is molded according to the structural requirement, the shape of the strain gauge is completely matched with the elastic body, and the position deviation possibly caused by actual assembly can be avoided.
(4) The width of the grid wire on the strain gauge is 1.62mm, the strain gauge adopts a structure with shorter and denser grid wires, and the output model is relatively stronger and more sensitive. And the energy consumption is relatively lower.
(5) Through support column and locating hole double location, the location is more accurate, and batch reliability is good.
(6) The resistances of the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are all 320 ohms, so that the energy consumption is low and the signal is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a size marking diagram of the present invention.
Description of reference numerals:
the structure comprises a first 1-strain gauge, a second 2-strain gauge, a third 3-strain gauge, a fourth 4-strain gauge, a 5-substrate, a 6-supporting column, a 7-positioning hole, a first 8-pad, a second 9-pad, a third 10-pad, a fourth 11-pad, a fifth 12-pad and a sixth 13-pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1 and 2, the utility model provides a pointing stick strain gauge, which comprises a first strain gauge 1, a second strain gauge 2, a third strain gauge 3, a fourth strain gauge 4, a base 5, a support pillar 6, a positioning hole 7, a first pad 8, a second pad 9, a third pad 10, a fourth pad 11, a fifth pad 12 and a sixth pad 13, wherein the base 5 is in a shape of a Chinese character 'tu', the support pillar 6 is arranged at the center above the base 5 for positioning, the first strain gauge 1 is arranged above the support pillar 6, the second strain gauge 2 is arranged on the right side of the support pillar 6, the third strain gauge 3 is arranged on the left side of the support pillar 6, the fourth strain gauge 4 is arranged below the support pillar 6, the first strain gauge 1, the second strain gauge 2, the third strain gauge 3 and the fourth strain gauge 4 are all fixed on the base 5 by bonding, the first strain gauge 1, the second strain gauge 2, the third strain gauge 3 and the fourth strain gauge 4 are in a cross distribution, the angle between two adjacent strain gauges is 90 degrees, the angle offset is +/-0.3 degrees, and the grid wires of the first strain gauge 1, the second strain gauge 2, the third strain gauge 3 and the fourth strain gauge 4 are all perpendicular to the support column 6.
The first strain gauge 1, the second strain gauge 2, the third strain gauge 3 and the fourth strain gauge 4 are respectively provided with two joints, and the two joints are respectively arranged on two sides of the strain gauge. Wherein two joints of the first strain gauge 1 and the fourth strain gauge 4 are positioned on the left side and the right side of the strain gauge, and two joints of the second strain gauge 2 and the third strain gauge 3 are positioned on the upper side and the lower side of the strain gauge.
A first bonding pad 8, a second bonding pad 9, a third bonding pad 10, a fourth bonding pad 11, a fifth bonding pad 12 and a sixth bonding pad 13 are bonded below the substrate 5 from right to left in sequence,
the joint of the upside of two 2 of foil gauges passes through silver-colored line connection pad 8, the joint on two 2 downside of foil gauge and four 4 right sides of foil gauge all passes through silver-colored line connection pad two 9, the left joint of four 4 of foil gauges passes through silver-colored line connection pad three 10, the joint of three 3 downside of foil gauge passes through silver-colored line connection pad four 11, three 3 upsides of foil gauge and the left joint of one 1 of foil gauge all pass through silver-colored line connection pad five 12, the joint on one 1 right side of foil gauge passes through silver-colored line connection pad six 13, and wherein pad one 8, pad two 9, pad three 10, pad four 11, pad five 12 and pad six 13 all adopt laser spot welding with silver-colored line connection.
The size, the dimension and the resistance of the first strain gauge 1, the second strain gauge 2, the third strain gauge 3 and the fourth strain gauge 4 are the same, the dimension of the strain gauge 1 is 1.62mm x 1.65mm, and thus the width of the grid wire on the strain gauge 1 is 1.62 mm. The resistance of the first strain gauge 1 is 320 ohms.
The thicknesses of the first strain gauge 1, the second strain gauge 2, the third strain gauge 3 and the fourth strain gauge 4 are all 0.1 mm.
The length L of the substrate 5 is 13.9mm, the width 5d2 of the lower part of the substrate 5 is 10.5mm, the width d3 of the upper part of the substrate 5 is 6.6mm, and the length d1 from the right side of the first pad 8 to the left side of the sixth pad 13 is 8.2 mm.
The diameter R of the positioning hole 7 is 1.5mm, the vertical distance h from the middle of the first bonding pad 1 to the center of the positioning hole 7 is 4.07mm, the width d4 of the first bonding pad 8 is 0.7mm, and the distance d5 between the second bonding pads 9 of the first bonding pad 8 is 0.8 mm.
The utility model discloses a track point foil gage does not adopt conventional pad structure, but adopts the soft board basement, draws forth with the silver-colored line, and the welding of silver-colored line and pad adopts tin spraying laser spot welding, and the back processing procedure of being convenient for is used, and laser tin spraying electric welding is extremely low to pad and joint injury, and the far beyond conventional welding process of reliability and uniformity.
And (3) directly opening the die to manufacture the strain gauge, wherein the angle between two adjacent strain gauges is required to be 90 degrees, and the angle offset is controlled to be +/-0.3 degrees by using the process. Avoiding the position deviation caused by the offset of the strain gauge.
The strain gauge is molded according to the structural requirement, the shape of the strain gauge is completely matched with the elastic body, and the position deviation possibly caused by actual assembly can be avoided.
The strain gauge adopts a structure with shorter and denser grid wires, and has a relatively stronger output model and is more sensitive. And the energy consumption is relatively lower.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A track point strain gauge is characterized by comprising a first strain gauge, a second strain gauge, a third strain gauge, a fourth strain gauge, a substrate, a supporting column, a positioning hole, a first bonding pad, a second bonding pad, a third bonding pad, a fourth bonding pad, a fifth bonding pad and a sixth bonding pad, the substrate is in a shape of a convex sheet, a support column is arranged at the center above the substrate, a first strain gauge is arranged above the support column, a second strain gauge is arranged on the right side of the supporting column, a third strain gauge is arranged on the left side of the supporting column, a fourth strain gauge is arranged below the supporting column, the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are fixed on the substrate in an adhesion mode, the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are distributed in a cross shape, and grid wires of the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are all perpendicular to the support column;
the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are respectively provided with two joints, the two joints are respectively arranged on two sides of the strain gauge, the two joints of the first strain gauge and the fourth strain gauge are positioned on the left side and the right side of the strain gauge, and the two joints of the second strain gauge and the third strain gauge are positioned on the upper side and the lower side of the strain gauge;
a first bonding pad, a second bonding pad, a third bonding pad, a fourth bonding pad, a fifth bonding pad and a sixth bonding pad are sequentially bonded below the substrate from right to left,
the joint of the upside of foil gage two passes through silver-colored line connection pad one, the joint on two downside of foil gage and right side all passes through silver-colored line connection pad two, the joint on four left joints of foil gage all passes through silver-colored line connection pad three, the joint of three downside of foil gage all passes through silver-colored line connection pad four, three upsides of foil gage and the left joint of foil gage all pass through silver-colored line connection pad five, the joint of one upside of foil gage passes through silver-colored line connection pad six, and wherein pad one, pad two, pad three, pad four, pad five and pad six all adopt laser spot welding with silver-colored line connection.
2. The track point strain gage of claim 1 wherein the angle between adjacent strain gages is 90 ° and the angular offset is ± 0.3 °.
3. The track point strain gage of claim 1 wherein said first, second, third and fourth strain gages are all the same size, dimension and resistance, said strain gage having a dimension of 1.62mm x 1.65mm, such that the width of the wire grid on the strain gage is 1.62mm and the resistance of the first strain gage is 320 ohms.
4. The track point strain gage of claim 1 wherein the first, second, third and fourth strain gages are each 0.1mm thick.
5. A track point strain gage as defined in claim 1 wherein the base has a length L of 13.9mm, the base upper portion has a width d3 of 6.6mm, and the base lower portion has a width d2 of 10.5 mm.
6. A track point strain gage as recited in claim 1, wherein the length d1 from one right side of the pad to the six left sides of the pad is 8.2 mm.
7. A track point strain gage as claimed in claim 1 wherein the diameter R of the registration hole is 1.5 mm.
8. The track point strain gage of claim 1 wherein a vertical distance h from a center of said pad to a center of said locating hole is 4.07 mm.
9. The track point strain gage of claim 1 wherein said first lands have a width d4 of 0.7mm and said second lands have a spacing d5 of 0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921663259.9U CN210464357U (en) | 2019-09-30 | 2019-09-30 | Pointing stick strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921663259.9U CN210464357U (en) | 2019-09-30 | 2019-09-30 | Pointing stick strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210464357U true CN210464357U (en) | 2020-05-05 |
Family
ID=70434881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921663259.9U Active CN210464357U (en) | 2019-09-30 | 2019-09-30 | Pointing stick strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210464357U (en) |
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2019
- 2019-09-30 CN CN201921663259.9U patent/CN210464357U/en active Active
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