CN106154016B - Current sensor for automobile crash test - Google Patents
Current sensor for automobile crash test Download PDFInfo
- Publication number
- CN106154016B CN106154016B CN201610742580.0A CN201610742580A CN106154016B CN 106154016 B CN106154016 B CN 106154016B CN 201610742580 A CN201610742580 A CN 201610742580A CN 106154016 B CN106154016 B CN 106154016B
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- magnetic ring
- cover plate
- lower cover
- current sensor
- upper cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses a current sensor for an automobile collision test, which comprises a lower cover and an upper cover plate, wherein the upper cover plate comprises a covering part and an upper magnetic ring mounting part, one side of the upper magnetic ring mounting part is integrally connected with the covering part, a wire inlet is reserved between the other side of the upper magnetic ring mounting part and the covering part, and the inner side of the wire inlet is provided with a detection hole; the lower cover is internally provided with a lower magnetic ring which can be closed with the upper magnetic ring, a Hall element which induces the magnetic field change of the magnetic ring and a circuit conversion device which is connected with the Hall element, and the circuit conversion device is communicated with an external output device through an output line; two sides of the covering part of the upper cover plate are respectively provided with a sliding guide groove, a screw with the diameter of a nut larger than the width of the sliding guide groove penetrates through the sliding guide groove to be connected with the upper cover plate and the lower cover, relative sliding can occur between the upper cover plate and the lower cover along the sliding guide groove, and a spring with a steel ball at the top is arranged on the lower cover and is positioned under the sliding guide groove. The invention has the advantages of flexible and small structure, convenient operation, good locking condition and good current test sensitivity, and meets the requirements of automobile crash tests.
Description
Technical Field
The invention relates to a current sensor, in particular to a current detection sensor for an automobile crash test.
Background
In the process of automobile crash test, how the working condition of the motor of the automobile concerns the performance, safety and maintenance of the automobile, and the working condition of the motor can be visually represented on current output. Current sensors in the current market are large in size and not firm in locking, or are not enough in collision strength and cannot be used in collision tests.
Disclosure of Invention
The invention aims to solve the technical problem of providing a current sensor for an automobile crash test, which has the advantages of small volume, flexible operation, firm locking and good current test sensitivity.
In order to solve the technical problem, the current sensor for the automobile crash test comprises a lower cover and an upper cover plate,
the upper cover plate comprises a covering part positioned at the lower part and an upper magnetic ring mounting part positioned at the upper part and internally provided with an upper magnetic ring, one side of the upper magnetic ring mounting part is integrally connected with the covering part, a wire inlet for leading in and out of a wire is reserved between the other side of the upper magnetic ring mounting part and the covering part, and the inner side of the wire inlet is provided with a detection hole;
the lower cover is internally provided with a lower magnetic ring which can be closed with the upper magnetic ring, a Hall element which induces the magnetic field change of the magnetic ring and a circuit conversion device which is connected with the Hall element, and the circuit conversion device is communicated with an external output device through an output line;
two sides of the covering part of the upper cover plate are respectively provided with a sliding guide groove, a screw with the diameter of a nut larger than the width of the sliding guide groove penetrates through the sliding guide groove to connect the upper cover plate and the lower cover, the upper cover plate and the lower cover can slide relative to each other along the sliding guide groove, and a spring with a top provided with a steel ball is arranged on the lower cover and under the sliding guide groove.
Furthermore, an upper magnetic ring cavity with the same shape as the upper magnetic ring is arranged in the upper magnetic ring mounting part, and the longitudinal section of the upper magnetic ring is in a semicircular ring shape.
Furthermore, a wire pressing plate for fixing the output wire is arranged in the lower cover.
Furthermore, an output line groove located above the output line is formed in the bottom surface of the line pressing plate.
Furthermore, the lower magnetic ring comprises a left magnetic ring and a right magnetic ring, and the Hall element is located in a gap between the left magnetic ring and the right magnetic ring.
Furthermore, a cavity groove is arranged in the lower cover, the cavity groove comprises a lower magnetic ring cavity used for fixing the lower magnetic ring, a circuit conversion device groove used for placing a circuit conversion device, and a line collecting groove used for placing an output line, and an output line hole for the output line to extend out is formed in the bottom of the lower cover; the cavity also includes a spring hole for securing a spring.
Furthermore, the cavity groove further comprises a line pressing plate groove, and the line collecting groove is formed in the line pressing plate groove.
Further, the upper surface of the covering part of the upper cover plate is provided with a skid-proof part.
Furthermore, the upper cover plate is provided with the draw runner below both sides, the lower cover both sides are provided with the gliding slide rail of confession draw runner.
Further, the relative slidable distance between the upper cover plate and the lower cover is equal to the width L of the wire inlet opening.
The screw used by the invention not only plays a role in fixing the upper cover plate and the lower cover plate, but also plays a role in guiding and limiting in the sliding guide groove, and simultaneously, the spring and the steel ball are matched with the upper cover plate to realize the fixation of any position in the stroke by acting force when the upper cover plate slides. The invention has the advantages of flexible and small structure, convenient operation, good locking condition and good current test sensitivity, and meets the requirements of automobile crash tests.
Drawings
FIG. 1 is a schematic diagram of an exploded structure of a current detection sensor according to the present invention;
FIG. 2 is a schematic structural diagram of an upper cover plate of the current detection sensor according to the present invention;
FIG. 3 is a schematic structural diagram of a lower cover of the current sensor of the present invention;
FIG. 4 is a schematic diagram of the current sensor of the present invention in a closed configuration;
fig. 5 is a schematic structural diagram of the current sensor according to the present invention when it is turned on.
In the figure: 1-upper cover plate; 1.1-a cover; 1.2-mounting a magnetic ring; 1.3-upper magnetic ring cavity; 1.4-anti-slip part; 1.5-a slider; 1.6-detection holes; 1.7-wire inlet; 2-lower cover; 2.1-lower notch; 2.21-lower magnetic ring cavity; 2.22-circuit switching device slot; 2.23-trunking; 2.24-groove of wire pressing plate; 2.3-output line hole; 2.4-spring hole; 2.5-screw holes; 2.6-sliding rail; 3-screws; 4-a wire pressing plate; 4.1-output line groove; 5-steel balls; 6-a spring; 7-a hall element; 8.1-mounting a magnetic ring; 8.2-lower magnetic ring; 8.21-left magnetic ring; 8.22-right magnetic ring; 9-a sliding guide groove; 10-an output line; 11-circuit switching device.
Detailed Description
The embodiment of the invention comprises the following steps:
the present invention will be described in further detail with reference to the drawings and the detailed description.
The current sensor for the automobile crash test, as shown in fig. 1-5, mainly comprises a lower cover 2 and an upper cover plate 1.
As shown in fig. 2, the upper cover plate 1 includes a covering portion 1.1 located at a lower portion and an upper magnetic ring mounting portion 1.2 located at an upper portion and having an upper magnetic ring 8.1 built therein, one side (left side shown in fig. 1-5) of the upper magnetic ring mounting portion 1.2 is integrally connected with the covering portion 1.1, a wire inlet 1.7 for a wire to enter and exit is reserved between the other side (right side shown in fig. 1-5) and the covering portion 1.1, and a detection hole 1.6 is formed inside the wire inlet 1.7. The longitudinal section of the upper magnetic ring 8.1 is semicircular ring-shaped. An upper magnetic ring cavity 1.3 which is consistent with the upper magnetic ring 8.1 in shape is arranged in the upper magnetic ring mounting part 1.2, and the upper magnetic ring 8.1 is fixed in the upper magnetic ring cavity 1.3.
As shown in fig. 3, the lower cover 2 is provided with a lower notch 2.1 having a semicircular longitudinal section at the top and a cavity groove arranged inside, the cavity groove includes a lower magnetic ring cavity 2.21 located below the lower notch 2.1, the lower side of the lower magnetic ring cavity 2.21 is communicated with a circuit converter groove 2.22, a line pressing plate groove 2.24 and a line collecting groove 2.23 further arranged in the line pressing plate groove 2.24 are arranged below the circuit converter groove 2.22, and the bottom of the lower cover 2 is provided with an output line hole 2.3.
A lower magnetic ring 8.2 consisting of a left magnetic ring 8.21 and a right magnetic ring 8.22 is arranged in the lower magnetic ring cavity 2.21, and a gap is reserved between the left magnetic ring 8.21 and the right magnetic ring 8.22 and is used as an air gap when the magnetic field is closed. The air gap is provided with a Hall element 7 for inducing the magnetic field change of the magnetic ring, the Hall element 7 is connected with a circuit conversion device 11 positioned in a circuit conversion device groove 2.22, and the circuit conversion device 11 passes through an output wire hole 2.3 through an output wire 10 positioned in a line concentration groove 2.23 to be communicated with an external output device. Line ball board groove 2.24 internal fixation line ball board 4, line ball board 4 bottoms are provided with line ball board groove 4.1, and this line ball board groove 4.1 just is located output line 10's top after the installation, makes line ball board 4 play the fixed action to output line 10. The wire pressing plate 4 is fixed with the lower cover 2 through two ends by screws.
Two sliding guide grooves 9 are respectively arranged at the symmetrical positions at two sides of the covering part 1.1 of the upper cover plate 1, a screw 3 with the nut diameter larger than the width of the sliding guide groove 9 passes through the sliding guide grooves 9 and is fixed in a screw hole 2.5 arranged at the corresponding position of the lower cover 2, and the upper cover plate 1 and the lower cover 2 are installed and fixed. The sliding guide groove 9 is a waist-shaped hole (namely, two ends are semicircular arcs, and the middle is a long round hole parallel to a plane), so that the upper cover plate 1 can slide. The screw 3 plays the roles of connection, limiting and guiding.
Two sides of the lower cover 2 are positioned below the screw holes 2.5, spring holes 2.4 are also arranged at the positions right below the sliding guide grooves 9, springs 6 are arranged in the spring holes 2.4, and a steel ball 5 is placed at the top of each spring 6. The combination of the spring 6 and the steel ball 5 pre-tightens the upper cover plate 1, tightly presses and pushes the upper cover plate 1 to realize the opening and closing of the wire inlet 1.7, and the magnetic rings on the upper cover plate and the lower cover plate form a circle when the upper cover plate and the lower cover plate are closed.
And sliding strips 1.5 are arranged below two sides of the upper cover plate 1, and sliding rails 2.6 for the sliding strips 1.5 to slide are arranged on two sides of the lower cover 2. The relative slidable distance between the upper cover plate 1 and the lower cover 2 is equal to the opening width L of the wire inlet 1.7.
The cover part 1.1 covers the lower cover 2, and the upper magnetic ring mounting part 1.2 is positioned at the top of the lower cover 2, so that the upper magnetic ring 8.1 and the lower magnetic ring 8.2 can be opened and closed along with the relative sliding between the upper cover plate 1 and the lower cover 2.
The upper surface of the covering part 1.1 of the upper cover plate 1 is provided with an anti-skid part 1.4, the anti-skid part 1.4 is arranged into a concave-convex strip-shaped structure, and materials with large friction coefficient, such as an anti-skid rubber sheet, can also be fixed. The open state of the invention is shown in fig. 5, at this time, the upper magnetic ring mounting part 1.2 of the upper cover plate 1 leaves the lower cover 2, and a closed magnetic field cannot be formed between the upper magnetic ring 8.1 and the lower magnetic ring 8.2. The screw 3 is located at the bottom of the sliding guide 9. When the detection is needed, in the opening state, the lead to be detected is placed into the detection hole 1.6 through the wire inlet 1.7. The anti-skid part 1.4 of the upper cover plate 1 is pressed, the upper cover plate 1 is pushed to slide downwards until the screw 3 is positioned at the top of the sliding guide groove 9 (for an upper limit position), the relative slidable distance between the upper cover plate 1 and the lower cover 2 is equal to the opening width L of the wire inlet 1.7, at the moment, the wire inlet 1.7 is just closed, the upper magnetic ring mounting part 1.2 of the upper cover plate 1 is attached to the top of the lower cover 2, and the upper magnetic ring 8.1 and the lower magnetic ring 8.2 form a circular magnetic ring to obtain a closed cylindrical magnetic field and induce the change of the current of a lead.
After the detection is finished, the anti-skid part 1.4 of the upper cover plate 1 is pressed, the upper cover plate 1 is pushed to slide upwards until the screw 3 is positioned at the bottom (lower limit) of the sliding guide groove 9, at the moment, the wire inlet 1.7 has the largest opening, and the wire is taken out.
During the sliding of the upper cover 1, the spring 6 is further compressed, giving the upper cover 1 a counter force as a tightening force, so that the upper cover 1 can be held at any position during the sliding. When the screw 3 is in the upper limit position, namely the sensor device is in the closed state, the compression amount of the spring 6 is reduced, and the steel ball 5 is partially clamped in the sliding guide groove 9 to play a role in fixing.
When the paper is placed according to the figures 4 and 5, the vertical direction of the paper is vertical, and the left and right directions of the paper are horizontal.
The invention is particularly suitable for detecting small-size wires with the diameter less than or equal to 3mm, so as to set the opening width of the small-size wire inlet 1.7 (namely, the opening width L =3mm of the wire inlet 1.7), and can further embody the advantages of flexibility, smallness and simple and convenient operation.
The above description is only about the preferred embodiment of the present invention, but it should not be understood as limiting the claims, and the present invention may be modified in other structures, not limited to the above structures. In general, all changes which come within the meaning and range of the independent claims are to be embraced within their scope.
Claims (10)
1. The utility model provides a current sensor for car crash test which characterized in that: the current sensor comprises a lower cover (2) and an upper cover plate (1),
the upper cover plate (1) comprises a covering part (1.1) positioned at the lower part and an upper magnetic ring mounting part (1.2) positioned at the upper part and internally provided with an upper magnetic ring (8.1), one side of the upper magnetic ring mounting part (1.2) is integrally connected with the covering part (1.1), a wire inlet (1.7) for a wire to enter and exit is reserved between the other side of the upper magnetic ring mounting part and the covering part (1.1), and a detection hole (1.6) is arranged at the inner side of the wire inlet (1.7);
a lower magnetic ring (8.2) which can be closed with the upper magnetic ring (8.1), a Hall element (7) for sensing the magnetic field change of the magnetic ring and a circuit switching device (11) connected with the Hall element (7) are arranged in the lower cover (2), and the circuit switching device (11) is communicated with an external output device through an output line (10);
the two sides of the covering part (1.1) of the upper cover plate (1) are respectively provided with a sliding guide groove (9), the sliding guide grooves (9) are waist-shaped holes, a screw (3) with the diameter larger than the width of each sliding guide groove (9) penetrates through each sliding guide groove (9), is fixed into a screw hole (2.5) arranged at the corresponding position of the lower cover (2) and is connected with the upper cover plate (1) and the lower cover (2), relative sliding can occur between the upper cover plate (1) and the lower cover (2) along each sliding guide groove (9), two sides of the lower cover (2) are located below the screw holes (2.5), spring holes (2.4) are also arranged under the sliding guide grooves (9), springs (6) are arranged in the spring holes (2.4), steel balls (5) are placed at the tops of the springs (6), and the combination of the springs (6) and the steel balls (5) pre-tightens the upper cover plate (1).
2. The current sensor for a crash test of an automobile according to claim 1, wherein: an upper magnetic ring cavity (1.3) which is consistent with the upper magnetic ring (8.1) in shape is arranged in the upper magnetic ring mounting part (1.2), and the longitudinal section of the upper magnetic ring (8.1) is in a semi-circular ring shape.
3. The current sensor for a crash test of an automobile according to claim 1, wherein: and a wire pressing plate (4) for fixing the output wire (10) is also arranged in the lower cover (2).
4. The current sensor for a crash test of an automobile according to claim 3, wherein: an output line groove (4.1) positioned above the output line (10) is formed in the bottom surface of the line pressing plate (4).
5. The current sensor for a crash test of an automobile according to claim 1, wherein: the lower magnetic ring (8.2) comprises a left magnetic ring (8.21) and a right magnetic ring (8.22), and the Hall element (7) is positioned in a gap between the left magnetic ring (8.21) and the right magnetic ring (8.22).
6. The current sensor for the automobile crash test according to claim 1, characterized in that: a cavity groove is arranged in the lower cover (2), the cavity groove comprises a lower magnetic ring cavity (2.21) for fixing a lower magnetic ring, a circuit conversion device groove (2.22) for placing a circuit conversion device (11) and a line collecting groove (2.23) for placing an output line (10), and an output line hole (2.3) for the output line (10) to extend out is formed in the bottom of the lower cover (2); the cavity groove also comprises a spring hole (2.4) for fixing the spring (6).
7. The current sensor for a crash test of an automobile according to claim 6, wherein: the cavity groove further comprises a line pressing plate groove (2.24), and the line collecting groove (2.23) is arranged in the line pressing plate groove (2.24).
8. The current sensor for the automobile crash test according to claim 1, characterized in that: the upper surface of the covering part (1.1) of the upper cover plate (1) is provided with an anti-skid part (1.4).
9. The current sensor for a crash test of an automobile according to claim 1, wherein: the upper cover plate is characterized in that sliding strips (1.5) are arranged below two sides of the upper cover plate (1), and sliding rails (2.6) for the sliding strips (1.5) to slide are arranged on two sides of the lower cover plate (2).
10. The current sensor for a crash test of an automobile according to claim 1, wherein: the relative slidable distance between the upper cover plate (1) and the lower cover (2) is equal to the opening width L of the wire inlet (1.7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610742580.0A CN106154016B (en) | 2016-08-26 | 2016-08-26 | Current sensor for automobile crash test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610742580.0A CN106154016B (en) | 2016-08-26 | 2016-08-26 | Current sensor for automobile crash test |
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| Publication Number | Publication Date |
|---|---|
| CN106154016A CN106154016A (en) | 2016-11-23 |
| CN106154016B true CN106154016B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610742580.0A Active CN106154016B (en) | 2016-08-26 | 2016-08-26 | Current sensor for automobile crash test |
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| CN (1) | CN106154016B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802472B (en) * | 2017-04-28 | 2021-01-01 | 南宁富桂精密工业有限公司 | Current detection device |
| CN107167623B (en) * | 2017-05-22 | 2021-11-26 | 杭州集普科技有限公司 | Triaxial angular velocity sensor for automobile crash test |
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| JP2004212280A (en) * | 2003-01-07 | 2004-07-29 | Nec Tokin Corp | Two-directional detection type impact sensor |
| CN101952732A (en) * | 2007-12-07 | 2011-01-19 | 矢崎总业株式会社 | Current sensor |
| CN102004179A (en) * | 2009-09-01 | 2011-04-06 | 天津市松正电动科技有限公司 | Magnetic induction current sensor for electric vehicle controller |
| CN202305634U (en) * | 2011-09-30 | 2012-07-04 | 上海蓝伯科电子科技有限公司 | Current detection system |
| CN203275498U (en) * | 2013-05-31 | 2013-11-06 | 大洋电机新动力科技有限公司 | Current sensor module of electric automobile |
| CN204302357U (en) * | 2014-12-25 | 2015-04-29 | 南京中旭电子科技有限公司 | A kind of Hall current sensor |
| CN206002587U (en) * | 2016-08-26 | 2017-03-08 | 杭州集普科技有限公司 | A kind of vehicle impact testing current sensor |
-
2016
- 2016-08-26 CN CN201610742580.0A patent/CN106154016B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004212280A (en) * | 2003-01-07 | 2004-07-29 | Nec Tokin Corp | Two-directional detection type impact sensor |
| CN101952732A (en) * | 2007-12-07 | 2011-01-19 | 矢崎总业株式会社 | Current sensor |
| CN102004179A (en) * | 2009-09-01 | 2011-04-06 | 天津市松正电动科技有限公司 | Magnetic induction current sensor for electric vehicle controller |
| CN202305634U (en) * | 2011-09-30 | 2012-07-04 | 上海蓝伯科电子科技有限公司 | Current detection system |
| CN203275498U (en) * | 2013-05-31 | 2013-11-06 | 大洋电机新动力科技有限公司 | Current sensor module of electric automobile |
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| CN206002587U (en) * | 2016-08-26 | 2017-03-08 | 杭州集普科技有限公司 | A kind of vehicle impact testing current sensor |
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| CN106154016A (en) | 2016-11-23 |
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Address after: Room 101, 1st Floor, Building 2, No. 503, Xingguo Road, Donghu Street, Linping District, Hangzhou City, Zhejiang Province, 311106 Applicant after: HANGZHOU JEBOOL TECHNOLOGY CO.,LTD. Address before: 311101 Hangzhou Jipu Technology Co., Ltd. 1-401, Qiaosi Science Park, No. 69, Xinye Road, Qiaosi Town, Yuhang District, Hangzhou City, Zhejiang Province Applicant before: HANGZHOU JEBOOL TECHNOLOGY CO.,LTD. |
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