CN203053994U - Digital rotating speed sensor - Google Patents
Digital rotating speed sensor Download PDFInfo
- Publication number
- CN203053994U CN203053994U CN 201320015493 CN201320015493U CN203053994U CN 203053994 U CN203053994 U CN 203053994U CN 201320015493 CN201320015493 CN 201320015493 CN 201320015493 U CN201320015493 U CN 201320015493U CN 203053994 U CN203053994 U CN 203053994U
- Authority
- CN
- China
- Prior art keywords
- board unit
- printed board
- rotating speed
- flexible shaft
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a digital rotating speed sensor, comprising a flexible shaft, a magnetic ring arranged on the flexible shaft, and a printed board unit. The magnetic ring is magnetized to have a plurality of pairs of magnetic poles. The printed board unit comprises a Hall circuit and a three-core cable. The flexible shaft and the printed board unit are externally provided with a shell and a shaft sleeve. According to the digital rotating speed sensor provided by the utility model, the magnetic ring is arranged on the flexible shaft, the magnetic ring is magnetized to have the plurality of pairs of magnetic poles, the printed board unit welded with the Hall circuit is connected through the three-core cable, and in this way, the flexible shaft is directly connected with a rotating shaft to be tested, thereby outputting rotating speed-related digital signals. The digital rotating speed sensor employs a Hall effect principle to convert magnetic flux changes caused by rotation into voltage digital signals to output and to obtain rotating speed signals through the processing by a post-stage circuit; and thanks to the arrangement of the flexible shaft, the influences brought by ferromagnetic substance adsorption and working air gaps can be prevented and the electrical property, the stability property, and the safety property of the sensor are improved.
Description
Technical field
The utility model relates to a kind of digital speed probe, is specifically related to the digital speed probe that a kind of flexible axle drives.
Background technology
At present, speed probe generally adopts magneto-electric and hall effect type sensor, at turning axle to be measured a ferromagnetism gear is installed, and during this gear rotation, changes the distribution of magnetic flux, makes sensor produce the output signal relevant with rotating speed.This sensor, output signal depend on factors such as the shape, material, operating distance of magnetic gear, therefore, need the only novel rotating speed sensor relevant with rotating speed of a kind of output signal of exploitation badly.
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the digital speed probe that the utility model provides a kind of flexible axle to drive, by at flexible axle magnet ring being set, it is many to magnetic pole to magnetize at magnet ring, and directly be connected with turning axle to be measured by flexible axle, export the digital signal relevant with rotating speed.
Technical scheme: for achieving the above object, a kind of digital speed probe of the present utility model, comprise flexible axle, be arranged on magnet ring, printed board unit on the flexible axle, it is some to magnetic pole to have magnetized on the described magnet ring, described printed board unit comprises Hall circuit and triple cable, and described flexible axle and printed board unit outside are provided with housing and axle sleeve.
Flexible axle refers to the plastic shaft that Shooting Technique is processed herein, is referred to as flexible axle for the metallic hard axle.
As preferably, described housing and axle sleeve are assembled by ultra-sonic welded.
As preferably, described Hall circuit and triple cable are welded on the printed board unit, and described triple cable is drawn by the hole on the housing, and triple cable is connected with power end, earth terminal and signal line end respectively.
In the utility model, housing is provided with internal thread, and axle sleeve is provided with external thread.Described flexible axle is connected with turning axle to be measured, and the connected mode of flexible axle and turning axle to be measured has two kinds: a kind of is that described flexible axle is provided with the hole of inserting for turning axle to be measured, in the hole of turning axle insertion flexible axle to be measured; Another kind is that flexible axle inserts in the hole of turning axle to be measured, and is connected and fixed by the internal thread of housing.
Beneficial effect: digital speed probe of the present utility model, by at flexible axle magnet ring being set, and it is many to magnetic pole to magnetize at magnet ring, and the printed board unit that is welded with Hall circuit by the triple cable connection, flexible axle directly is connected with turning axle to be measured, thus the output digital signal relevant with rotating speed.The flux change that the utility model application Hall effect principle causes rotation is converted to voltage digital signal output, draw tach signal through the late-class circuit processing, by flexible axle is set, can avoid the influence of ferromagnetic material absorption, working gas gap, improve electrical property, stability and the security performance of sensor.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of flexible axle and magnet ring among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
As depicted in figs. 1 and 2, a kind of digital speed probe of the present utility model, comprise flexible axle 1, be arranged on magnet ring 6 and printed board unit 4 on the flexible axle 1, it is some to magnetic pole to have magnetized on the magnet ring 6, the magnetic pole logarithm can be made as required, printed board unit 4 comprises Hall circuit 5 and triple cable, and flexible axle 1 and printed board unit 4 outsides are provided with housing 2 and axle sleeve 3.
In the utility model, housing 2 and axle sleeve 3 are assembled by ultra-sonic welded, housing 2 and axle sleeve 3 be respectively equipped with internal thread with external thread in order to fixedly connected, be welded with electronic circuits such as Hall circuit 5, Resistor-Capacitor Unit, post processing circuitry on the printed board unit 4, be welded with triple cable simultaneously, realize the function that power supply input and signal are exported by triple cable.Triple cable is drawn by the hole on the housing 2, and triple cable is connected with power end, earth terminal and signal line end respectively.
In the utility model, flexible axle 1 is connected with turning axle to be measured, flexible axle 1 is provided with the hole of inserting for turning axle to be measured, flexible axle 1 has two kinds with the connected mode of turning axle to be measured, a kind of is that turning axle to be measured inserts in the hole of flexible axle 1, a kind of is that flexible axle 1 inserts in the hole of axle to be measured, and fixing by being threaded on the housing 2 respectively.For example, flexible axle 1 can be designed to following structure: flexible axle 1 one ends have endoporus, can adapt to the requirement that turning axle to be measured inserts, and flexible axle 1 other end does not have endoporus can adapt to the requirement of inserting turning axle to be measured.
The above only is preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. digital speed probe, it is characterized in that: comprise flexible axle (1), be arranged on magnet ring (6) and printed board unit (4) on the flexible axle (1), it is some to magnetic pole to have magnetized on the described magnet ring (6), described printed board unit (4) comprises Hall circuit (5) and triple cable, and described flexible axle (1) and printed board unit (4) outside are provided with housing (2) and axle sleeve (3).
2. digital speed probe according to claim 1, it is characterized in that: described housing (2) and axle sleeve (3) are assembled by ultra-sonic welded.
3. digital speed probe according to claim 1, it is characterized in that: described Hall circuit (5) and triple cable are welded on the printed board unit (4), described triple cable is drawn by the hole on the housing (2), and triple cable is connected with power end, earth terminal and signal line end respectively.
4. digital speed probe according to claim 1, it is characterized in that: described flexible axle (1) is connected with turning axle to be measured, and described flexible axle (1) is provided with the hole of inserting for turning axle to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015493 CN203053994U (en) | 2013-01-11 | 2013-01-11 | Digital rotating speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015493 CN203053994U (en) | 2013-01-11 | 2013-01-11 | Digital rotating speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053994U true CN203053994U (en) | 2013-07-10 |
Family
ID=48736934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320015493 Expired - Lifetime CN203053994U (en) | 2013-01-11 | 2013-01-11 | Digital rotating speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203053994U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015101222A1 (en) * | 2013-12-31 | 2015-07-09 | 博世汽车部件(苏州)有限公司 | Wheel speed sensor and vehicle |
| CN104849486A (en) * | 2014-11-24 | 2015-08-19 | 重庆斯凯力科技有限公司 | Rotating speed sensor |
| CN107947489A (en) * | 2017-10-20 | 2018-04-20 | 珠海凯邦电机制造有限公司 | The control structure and motor of motor speed |
| CN109374918A (en) * | 2018-11-30 | 2019-02-22 | 桂林航天电子有限公司 | A kind of digital wheel speed sensors |
-
2013
- 2013-01-11 CN CN 201320015493 patent/CN203053994U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015101222A1 (en) * | 2013-12-31 | 2015-07-09 | 博世汽车部件(苏州)有限公司 | Wheel speed sensor and vehicle |
| CN104849486A (en) * | 2014-11-24 | 2015-08-19 | 重庆斯凯力科技有限公司 | Rotating speed sensor |
| CN107947489A (en) * | 2017-10-20 | 2018-04-20 | 珠海凯邦电机制造有限公司 | The control structure and motor of motor speed |
| CN109374918A (en) * | 2018-11-30 | 2019-02-22 | 桂林航天电子有限公司 | A kind of digital wheel speed sensors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |