TWI421499B - Vehicle speed sensing device - Google Patents
Vehicle speed sensing device Download PDFInfo
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- TWI421499B TWI421499B TW099105591A TW99105591A TWI421499B TW I421499 B TWI421499 B TW I421499B TW 099105591 A TW099105591 A TW 099105591A TW 99105591 A TW99105591 A TW 99105591A TW I421499 B TWI421499 B TW I421499B
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- rotor
- vehicle
- sensing device
- positioning
- speed
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- Transmission And Conversion Of Sensor Element Output (AREA)
- Measuring Volume Flow (AREA)
- Measurement Of Distances Traversed On The Ground (AREA)
Description
一種車輛的速度感測裝置，尤指偵側車輛行車速度之速度感測裝置。A speed sensing device for a vehicle, in particular a speed sensing device for detecting the speed of a vehicle.
按，車輛的行車速度也日趨加快，而車輛上皆會設置有時速表以供駕駛得知目前車輛之速度。傳統的時速表大多利用車軸上所設置之計數齒輪，以及計數齒輪所連接之鋼索來帶動時速表轉動；然而，此種作法會因齒輪或鋼索損壞而失效，讓駕駛無法得知目前車輛的行車速度而造成危險。According to the vehicle speed, the speed of the vehicle is also increasing, and the speedometer is set on the vehicle for driving to know the speed of the current vehicle. Conventional speedometers mostly use the counting gears provided on the axles and the steel cables connected to the counting gears to drive the speedometer to rotate; however, this method will fail due to the damage of the gears or cables, making it impossible for the driver to know the current driving of the vehicle. Speed is dangerous.
再者，目前有一種電子式時速感測器利用感測元件偵測車軸轉速，再將偵測訊號傳送至電子式時速表判讀，進而顯示目前車輛的行車速度，但此種感測元件為利用霍爾元件，而霍爾元件之成本較高，讓使用者望之卻步，所以，即有相關業者在車軸上加裝轉子，以感測轉子之轉速來偵測行車速度，然而，一般轉子大多利用全部磁鐵或金屬所製成，製作成本相當的高，且不易製作，即使以塑膠磁鐵代替也無法有效的降低成本，若以嵌入式射出將鐵片包覆於轉子內，則品質也無法有效的提升，更是無法降低成本。Furthermore, there is an electronic speed sensor that uses the sensing component to detect the axle speed, and then transmits the detection signal to the electronic speedometer for reading, thereby displaying the current vehicle speed, but the sensing component is utilized. Hall elements, and the high cost of the Hall elements, the user is discouraged, so that the relevant industry to install a rotor on the axle to sense the speed of the rotor to detect the speed of the vehicle, however, the general rotor is mostly Made of all magnets or metals, the manufacturing cost is quite high, and it is not easy to manufacture. Even if it is replaced by a plastic magnet, it can not effectively reduce the cost. If the iron piece is covered in the rotor by embedded injection, the quality cannot be effectively effective. The improvement is even more impossible to reduce costs.
是以，如何解決上述習知技術之不足與缺失，即為從事此相關行業業者所亟欲改善之問題所在。Therefore, how to solve the above-mentioned shortcomings and shortcomings of the prior art is the problem that those who are engaged in this related industry want to improve.
本發明之主要目的乃在於，利用轉子之本體與感磁片分開製作再進行組裝，俾使本體與感磁片之製造成本大為降低。The main object of the present invention is to separate and manufacture the main body of the rotor and the magnetic sensitive sheet, so that the manufacturing cost of the main body and the magnetic sensitive sheet is greatly reduced.
本發明之次要目的乃在於，利用非金屬材質所製成之本體以及金屬材質所製成之感磁片，使感測器可產生明顯之磁動勢，以讓車輛可正確的顯示出行車速度。The secondary object of the present invention is to use a magnetic body made of a non-metallic material and a magnetic material made of a metal material, so that the sensor can generate a significant magnetomotive force, so that the vehicle can correctly display the driving. speed.
為達上述目的，本發明之車輛的速度感測裝置係設置有座體，而座體內具有可隨車軸轉動之轉子，該轉子係設有以非金屬材質所製成之本體，而本體外緣依本體轉動方向間隔設置有以金屬材質所製成之感磁片，並於轉子一側設置有可偵測轉子轉速之感測器，而感測器可於轉子轉動時產生磁動勢，並將此磁動勢變更為方波，使車輛之儀表可利用此方波加以計算車輛之行進速度。To achieve the above object, the speed sensing device of the vehicle of the present invention is provided with a seat body, and the seat body has a rotor rotatable with the axle, and the rotor is provided with a body made of a non-metal material, and the outer edge of the body A magnetic sensitive sheet made of a metal material is disposed at intervals of the rotation direction of the body, and a sensor capable of detecting the rotational speed of the rotor is disposed on one side of the rotor, and the sensor generates a magnetomotive force when the rotor rotates, and The magnetomotive force is changed to a square wave, so that the vehicle's instrument can use the square wave to calculate the traveling speed of the vehicle.
請參閱第一圖至第四圖所示，由圖中可清楚看出，本發明之轉速感知器係設置有座體1、轉子2及感測器3，其中：該座體1為具有第一容置空間11，而第一容置空間11一側設置有第二容置空間12，且第一容置空間11內固設有軸承13。Referring to the first to fourth figures, it can be clearly seen from the figure that the rotation speed sensor of the present invention is provided with a seat body 1, a rotor 2 and a sensor 3, wherein: the seat body 1 has the first A accommodating space 11 is disposed, and a second accommodating space 12 is disposed on a side of the first accommodating space 11 , and a bearing 13 is fixed in the first accommodating space 11 .
該轉子2設有以非金屬材質所製成之本體21，而本體21外緣間隔凹設有複數定位空間211，且各定位空間211二側凹設有定位槽2111，並於定位槽2111之側壁設置有卡摯槽2112；而各定位空間211內設有以金屬材質所製成之感磁片22，而感磁片22二側分別彎折有翼部221，且翼部221表面剖設有卡摯片2211，並使二翼部221穿入於定位槽2111內，讓卡摯片2211為卡固於卡摯槽2112內形成定位，且感磁片22表面為與本體21表面形成平整曲面，該非金屬材質可為塑膠類材質。The rotor 2 is provided with a body 21 made of a non-metallic material, and the outer edge of the body 21 is recessed with a plurality of positioning spaces 211, and the positioning holes 211 are recessed on both sides of the positioning space 211, and are located in the positioning groove 2111. The side wall is provided with a latching groove 2112; and each of the positioning spaces 211 is provided with a magnetic sensitive sheet 22 made of a metal material, and the two sides of the magnetic sensitive sheet 22 are respectively bent with a wing portion 221, and the surface of the wing portion 221 is cut. There is a clamping piece 2211, and the two wings 221 are inserted into the positioning groove 2111, so that the locking piece 2211 is locked in the locking groove 2112 to form a positioning, and the surface of the magnetic sensitive piece 22 is formed to be flat with the surface of the body 21. The surface, the non-metallic material can be a plastic material.
該感測器3設有基板31，而基板31於靠近轉子2側設置有鐵心32，且鐵心32表面繞設有線圈33，使線圈33電性連接於基板31，而鐵心32上方設有永久磁鐵34。The sensor 3 is provided with a substrate 31, and the substrate 31 is provided with a core 32 near the rotor 2, and a coil 33 is disposed around the surface of the core 32, so that the coil 33 is electrically connected to the substrate 31, and the core 32 is permanently provided. Magnet 34.
請參閱第六圖所示，當本發明於組構時，係將轉子2樞設於座體1之軸承13外緣，並將感測器3定位於第二容置空間12內，使感測器3之線圈33靠近於轉子2。Referring to FIG. 6 , when the present invention is configured, the rotor 2 is pivotally disposed on the outer edge of the bearing 13 of the base 1 , and the sensor 3 is positioned in the second receiving space 12 . The coil 33 of the detector 3 is close to the rotor 2.
請參閱第五圖及第六圖所示，當本發明於使用時，為將座體1固定於車輛4，並使軸承13套設於車軸41外緣，當車輛4於行進時，車軸41會隨著車輛4行進的速度變化而改變轉動速率，此時車軸41會同時帶動轉子2於軸承13上樞轉，且轉子2之樞轉速率為相同於車軸41之樞轉速率，而當轉子2樞轉時，會使永久磁鐵34產生的磁力線通過鐵心32時，受到轉子2之感磁片22與本體21切替的影響產生變化，所以在轉子2轉動時，感磁片22與本體21為會依序與鐵心32產生磁通密度的變化，俾使繞設於鐵心32表面之線圈33產生磁動勢(如第八圖所示)，但此磁動勢為微弱的全形波，不利作為偵測計算之用，所以此磁動勢會經由基板31變更為方波(如第九圖所示)，使車輛4可利用此方波加以計算車輛4之行進速度，進而由儀表42顯示，以讓駕駛者可清楚得知車輛4之行進速度。Referring to the fifth and sixth figures, when the present invention is used, the seat body 1 is fixed to the vehicle 4, and the bearing 13 is sleeved on the outer edge of the axle 41. When the vehicle 4 is traveling, the axle 41 is used. The rotation rate will change as the speed of the travel of the vehicle 4 changes. At this time, the axle 41 will simultaneously drive the rotor 2 to pivot on the bearing 13, and the pivot speed of the rotor 2 is the same as the pivoting speed of the axle 41, and when the rotor When the pivoting force 2 causes the magnetic field lines generated by the permanent magnets 34 to pass through the core 32, the magneto-optical sheets 22 of the rotor 2 are changed by the influence of the magnetic strips 22 and the body 21, so that when the rotor 2 rotates, the magnetic sensitive sheets 22 and the main body 21 are The magnetic flux density is changed sequentially with the core 32, and the magnetomotive force is generated by the coil 33 wound around the surface of the core 32 (as shown in the eighth figure), but the magnetomotive force is a weak full-shaped wave, which is disadvantageous. As the detection calculation, the magnetomotive force is changed to a square wave via the substrate 31 (as shown in FIG. 9), so that the vehicle 4 can use the square wave to calculate the traveling speed of the vehicle 4, and then display by the meter 42. In order to let the driver know the speed of the vehicle 4 clearly.
由於前述實施例轉子2之本體21為利用間隔凹設有複數定位空間211，使感磁片22二側之翼部221穿入定位於定位空間211之定位槽2111內，以方便組裝，且組裝時不需使用工具鎖附，進而降低組裝所需之工時與成本，而本體21與感磁片22為分開製作再進行組裝，俾使本體21與感磁片22之製造成本大為降低。Because the body 21 of the rotor 2 of the foregoing embodiment is provided with a plurality of positioning spaces 211 by using the spacers, the wings 221 of the two sides of the magnetic sensitive sheet 22 are inserted into the positioning slots 2111 of the positioning space 211 for assembly and assembly. When the tool lock is not required, the labor and cost required for assembly are reduced, and the main body 21 and the magnetic sensitive sheet 22 are separately assembled and assembled, so that the manufacturing cost of the main body 21 and the magnetic sensitive sheet 22 is greatly reduced.
再請參閱第七圖所示，由圖中可清楚看出，該轉子2之感磁片22可於本體21利用射出成形時，以一體成形方式包覆於本體21外緣，讓感磁片22表面為與本體21表面形成平整曲面，進而可更加降低本體21與感磁片22之製造成本，並可方便組裝。Referring to the seventh figure, it can be clearly seen from the figure that the magnetic sensitive sheet 22 of the rotor 2 can be integrally formed on the outer edge of the body 21 when the body 21 is formed by injection molding, so that the magnetic sensitive sheet can be used. The surface of the 22 surface forms a flat curved surface with the surface of the body 21, thereby further reducing the manufacturing cost of the body 21 and the magnetic sensitive sheet 22, and facilitating assembly.
1．．．座體1. . . Seat
11．．．第一容置空間11. . . First accommodation space
12．．．第二容置空間12. . . Second accommodation space
13．．．軸承13. . . Bearing
2．．．轉子2. . . Rotor
21．．．本體twenty one. . . Ontology
211．．．定位空間211. . . Positioning space
2111．．．定位槽2111. . . Positioning slot
2112．．．卡摯槽2112. . . Card slot
22．．．感磁片twenty two. . . Magnetic sheet
221．．．翼部221. . . Wing
2211．．．卡摯片2211. . . Card sheet
3．．．感測器3. . . Sensor
31．．．基板31. . . Substrate
32．．．鐵心32. . . core
33．．．線圈33. . . Coil
34．．．永久磁鐵34. . . permanent magnet
4．．．車輛4. . . vehicle
41．．．車軸41. . . Axle
42．．．儀表42. . . meter
第一圖係為本發明之立體外觀圖。The first figure is a perspective view of the present invention.
第二圖係為本發明之立體分解圖。The second figure is a perspective exploded view of the present invention.
第三圖係為本發明感磁片之立體外觀圖。The third figure is a three-dimensional appearance of the magnetic sensitive sheet of the present invention.
第四圖係為本發明轉子之側視剖面局部分解圖。The fourth figure is a partial exploded view of a side view of the rotor of the present invention.
第五圖係為係為車輛之外觀示意圖。The fifth figure is a schematic view of the appearance of the vehicle.
第六圖係為本發明之剖面示意圖。The sixth drawing is a schematic cross-sectional view of the present invention.
第七圖係為本發明轉子再一實施例之立體外觀圖。The seventh drawing is a perspective view of a further embodiment of the rotor of the present invention.
第八圖係為線圈產生磁動勢之波形示意圖。The eighth figure is a waveform diagram showing the magnetomotive force generated by the coil.
第九圖係為磁動勢經比較放大電路整形後之波形示意圖。The ninth picture is a waveform diagram of the magnetomotive force after being shaped by the comparison amplifying circuit.
2．．．轉子2. . . Rotor
21．．．本體twenty one. . . Ontology
211．．．定位空間211. . . Positioning space
2111．．．定位槽2111. . . Positioning slot
2112．．．卡摯槽2112. . . Card slot
22．．．感磁片twenty two. . . Magnetic sheet
221．．．翼部221. . . Wing
2211．．．卡摯片2211. . . Card sheet
Claims (5)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099105591A TWI421499B (en) | 2010-02-26 | 2010-02-26 | Vehicle speed sensing device |
| JP2011020591A JP2011180132A (en) | 2010-02-26 | 2011-02-02 | Speed detection device of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099105591A TWI421499B (en) | 2010-02-26 | 2010-02-26 | Vehicle speed sensing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201129803A TW201129803A (en) | 2011-09-01 |
| TWI421499B true TWI421499B (en) | 2014-01-01 |
Family
ID=44691757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW099105591A TWI421499B (en) | 2010-02-26 | 2010-02-26 | Vehicle speed sensing device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011180132A (en) |
| TW (1) | TWI421499B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5592319B2 (en) | 2011-08-22 | 2014-09-17 | 日立オートモティブシステムズステアリング株式会社 | Integral power steering system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW330899B (en) * | 1995-10-17 | 1998-05-01 | Seiko Epson Corp | The apparatus for sensor, driving force-supplemented & torque sensor zero adjusting includes detecting shaft, detecting disc, magnetic sheet, magnetic yoke, magnet & magetic device to detect rotating angle of article |
| US20030234578A1 (en) * | 2002-03-08 | 2003-12-25 | Ntn Corporation | Rotation detecting device and anti-skid braking system using the same |
| TWM323015U (en) * | 2007-06-13 | 2007-12-01 | Jr-Bo Chen | Fluid switch |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0754861Y2 (en) * | 1990-03-16 | 1995-12-18 | サンケン・エアパクス株式会社 | Coil device |
| JPH0749353A (en) * | 1993-08-05 | 1995-02-21 | Matsushita Electric Works Ltd | Rotor for rotating speed sensor |
| JP3013732B2 (en) * | 1995-02-13 | 2000-02-28 | トヨタ自動車株式会社 | Body speed detector |
| JP2002242928A (en) * | 2001-02-16 | 2002-08-28 | Nsk Ltd | Rotation support device with sensor |
| JP4120216B2 (en) * | 2001-12-10 | 2008-07-16 | 日本精工株式会社 | Rolling bearing device with sensor |
-
2010
- 2010-02-26 TW TW099105591A patent/TWI421499B/en not_active IP Right Cessation
-
2011
- 2011-02-02 JP JP2011020591A patent/JP2011180132A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW330899B (en) * | 1995-10-17 | 1998-05-01 | Seiko Epson Corp | The apparatus for sensor, driving force-supplemented & torque sensor zero adjusting includes detecting shaft, detecting disc, magnetic sheet, magnetic yoke, magnet & magetic device to detect rotating angle of article |
| US20030234578A1 (en) * | 2002-03-08 | 2003-12-25 | Ntn Corporation | Rotation detecting device and anti-skid braking system using the same |
| TWM323015U (en) * | 2007-06-13 | 2007-12-01 | Jr-Bo Chen | Fluid switch |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201129803A (en) | 2011-09-01 |
| JP2011180132A (en) | 2011-09-15 |
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| MM4A | Annulment or lapse of patent due to non-payment of fees |