JP2814737B2 - Electric car - Google Patents
Electric carInfo
- Publication number
- JP2814737B2 JP2814737B2 JP31546390A JP31546390A JP2814737B2 JP 2814737 B2 JP2814737 B2 JP 2814737B2 JP 31546390 A JP31546390 A JP 31546390A JP 31546390 A JP31546390 A JP 31546390A JP 2814737 B2 JP2814737 B2 JP 2814737B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- wheel motor
- air
- wheel
- motor
- 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
Links
- 239000003570 air Substances 0.000 description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000428 dust Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、ホイールモータに用いた電気自動車に関す
る。Description: TECHNICAL FIELD The present invention relates to an electric vehicle used for a wheel motor.
［従来の技術］ 電気自動車の駆動系において、ドライブシャフトをな
くしエネルギの利用効率を上げるため、あるいは車両の
自在走行性を向上させるために、駆動車輪モータとを一
体としたホイールモータを利用した電気自動車が提案さ
れている（特開平２−11419、特開昭63−275427等参
照） 従来のホイールモータでは、外部からの水や塵挨の進
入を防ぐため、回転部と固定部とのすきまにリップシー
ルやダストシールを用い、モータ内部を気密にすること
で、防水性、防塵性を確保する構造であった。[Related Art] In a drive system of an electric vehicle, an electric motor using a wheel motor integrated with a drive wheel motor is used in order to eliminate a drive shaft and increase energy use efficiency or to improve a vehicle's free running property. A car has been proposed (see Japanese Patent Application Laid-Open No. 2-11419, Japanese Patent Application Laid-Open No. 63-275427, etc.). In a conventional wheel motor, in order to prevent water or dust from entering from outside, a clearance between a rotating part and a fixed part is required. Using a lip seal or dust seal, the inside of the motor is made airtight to ensure waterproofness and dustproofness.
［発明が解決しようとする課題］ しかし従来技術によるホイールモータでは、防水性、
防塵性が不完全であり、外部からの水や塵挨の進入を完
全に防ぐことは出来ない。特に外気圧に変化が生じた
り、モータの温度が下がった場合、モータ内圧が外気圧
より低くなるため、水の進入を防ぐことは困難である。
そのため、ホイールモータ内部に水が入り、コイル巻線
の絶縁不良等を生じるため、雨天時に走行が出来ないと
いう問題点を有する。[Problems to be Solved by the Invention] However, in the wheel motor according to the prior art, waterproofness,
Insufficient dustproofing cannot completely prevent water or dust from entering from outside. In particular, when the external pressure changes or the temperature of the motor decreases, it is difficult to prevent water from entering because the motor internal pressure becomes lower than the external pressure.
As a result, water enters the wheel motor, causing poor insulation of the coil windings and the like.
本発明はかかる問題点に鑑みてなされたものであっ
て、その目的とするところはホイールモータの防水性、
防塵性を格段に向上させ、ホイールモータを用いた電気
自動車の信頼性を向上させることにより、雨天時でもホ
イールモータを用いた電気自動車の走行を可能にするこ
とにある。The present invention has been made in view of such a problem, and the object thereof is to provide waterproofness of a wheel motor,
An object of the present invention is to make it possible to drive an electric vehicle using a wheel motor even in rainy weather by significantly improving dust resistance and improving the reliability of an electric vehicle using a wheel motor.
［課題を解決するための手段］ 上記課題を解決するために、本発明の電気自動車は、
圧縮空気を貯蔵する圧力貯蔵手段と、気密手段を設けた
ホイールモータとを圧力伝達手段で接続し、更に前記圧
力貯蔵手段と前記気密手段との間に圧力調整手段を有す
るホイールモータを用いた電気自動車において、前記ホ
イールモータ内部圧力を外気圧より高く設定して、前記
ホイールモータ内部圧力が設定圧力より低下した場合に
前記圧力調整手段により圧縮空気を前記圧力貯蔵手段か
ら圧力伝達手段を介して前記ホイールモータに供給する
ことで、前記ホイールモータ内部圧力を常時設定圧力に
調整することを特徴とする。[Means for Solving the Problems] In order to solve the above problems, the electric vehicle of the present invention includes:
The pressure storage means for storing the compressed air and the wheel motor provided with the airtight means are connected by pressure transmitting means, and the electric power using a wheel motor having a pressure adjusting means between the pressure storage means and the airtight means. In an automobile, the wheel motor internal pressure is set higher than the outside air pressure, and when the wheel motor internal pressure falls below a set pressure, the compressed air is compressed by the pressure adjusting means from the pressure storage means through the pressure transmitting means to the wheel motor. By supplying the pressure to the wheel motor, the internal pressure of the wheel motor is constantly adjusted to a set pressure.
［作用］ 本発明は上記の構成を有するのでレギュレータの働き
により、空気タンクより圧縮空気が供給され、ホイール
モータ内部は常に外気圧より高くなる。ホイールモータ
内の圧力が、外気の圧力より高いため、外部から水や塵
挨は進入できない。[Operation] Since the present invention has the above-described configuration, compressed air is supplied from the air tank by the operation of the regulator, and the inside of the wheel motor is always higher than the outside air pressure. Since the pressure in the wheel motor is higher than the pressure of the outside air, water and dust cannot enter from outside.
［実施例］ 以下本発明の実施例について図面に基づいて詳細に説
明する。第１図は本発明による電気自動車の構成を示す
図、第２図は第１図に示すホイールモータの断面図であ
る。なお、本実施例では、ホイールモータを四輪用いて
いるが、四輪とも構成、動作は同一であるので、以下一
輪についてのみ説明する。Example An example of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a view showing the configuration of an electric vehicle according to the present invention, and FIG. 2 is a sectional view of the wheel motor shown in FIG. In this embodiment, four wheel motors are used. However, since the four wheels have the same configuration and operation, only one wheel will be described below.
１は圧力貯蔵手段である空気タンク、２は圧力調整手
段であるレギュレータであり、リリーフ機能なしのもの
を用いている。３は圧力伝達手段である配管である。４
も圧力伝達手段である配管であり、可撓性を有するホー
スを用いている。５はホイールモータである。６はバル
ブ、７はエアドライヤである。Reference numeral 1 denotes an air tank serving as pressure storage means, and reference numeral 2 denotes a regulator serving as pressure adjustment means, which has no relief function. Reference numeral 3 denotes a pipe serving as a pressure transmitting means. 4
Is also a pipe which is a pressure transmitting means, and uses a flexible hose. 5 is a wheel motor. Reference numeral 6 denotes a valve, and 7 denotes an air dryer.
空気タンク１には、0.8MPaの空気が充填されている。
バルブ６は、自動車用ホイールに用いられている通常の
タイヤバルブであり、逆止め弁が内蔵されている。ガソ
リンスタンド等に設置されているタイヤの空気入れ用の
設備を用いて、バルブ６より空気タンク１に簡単に空気
を充填することができる。バルブ６と空気タンク１の間
には、エアドライヤ７があり、空気タンク１に送る空気
から水分を取り除き、乾燥空気にしている。なお、図示
していないが、乾燥剤が空気タンク１、レギュレータ
２、ホイールモータ５などに適宜入れられている。空気
タンク１の圧縮空気は、配管３、レギュレータ２、ホー
ス４を経由して、ホイールモータ５の内部に加えられて
いる。レギュレータは大気圧より0.02MPa高く設定され
ており、ホイールモータ内部は0.02MPa高く加圧されて
いる。The air tank 1 is filled with 0.8 MPa air.
The valve 6 is a normal tire valve used for a vehicle wheel, and has a built-in check valve. The air tank 1 can be easily filled with air from the valve 6 by using a facility for inflating tires installed at a gas station or the like. An air dryer 7 is provided between the valve 6 and the air tank 1 to remove moisture from the air sent to the air tank 1 to make the air dry. Although not shown, a desiccant is appropriately contained in the air tank 1, the regulator 2, the wheel motor 5, and the like. The compressed air in the air tank 1 is added to the inside of the wheel motor 5 via the pipe 3, the regulator 2, and the hose 4. The regulator is set at 0.02 MPa higher than the atmospheric pressure, and the inside of the wheel motor is pressurized at 0.02 MPa higher.
第２図において、８はタイヤ、９はホイールである。
10a〜10cはロータ、11はロータ磁石、12は気密カバーで
あり、８〜12は一体となり回転する。ロータ10a〜10c、
気密カバー12の接合部にはシールやガスケットを用い、
空気の漏れを生じないようにしてある。13はステータ、
14はコイルである。15は車軸であり、内部に空気を通す
穴が明けてある。車軸15の前記の空気穴にはホース４が
接続されており、レギュレータ２からの空気でホイール
モータ内部を加圧している。車軸15は、サスペンション
16a、16bにより、車体（図示せず）に取り付けられてい
る。17は気密手段であるリップシールであり、ホイール
モータ内部の空気が漏れないように気密を保っている。
18a,18bは軸受であり、ロータ部分８〜12を回転自在に
支持している。コイル14に電流が流されると、電流とロ
ータ磁石11の磁束との相互作用によって、ロータ部分８
〜12は回転駆動される。In FIG. 2, 8 is a tire and 9 is a wheel.
10a to 10c are rotors, 11 is a rotor magnet, 12 is an airtight cover, and 8 to 12 rotate integrally. Rotors 10a to 10c,
Use a seal or gasket at the joint of the airtight cover 12,
Air leakage is prevented. 13 is a stator,
14 is a coil. Reference numeral 15 denotes an axle, which has a hole through which air passes. The hose 4 is connected to the air hole of the axle 15, and pressurizes the inside of the wheel motor with air from the regulator 2. Axle 15, suspension
It is attached to a vehicle body (not shown) by 16a and 16b. Reference numeral 17 denotes a lip seal as airtight means, which keeps airtight so that air inside the wheel motor does not leak.
18a and 18b are bearings that rotatably support the rotor portions 8 to 12. When a current flows through the coil 14, the interaction between the current and the magnetic flux of the rotor magnet 11 causes the rotor portion 8 to rotate.
12 are driven to rotate.
大気の絶対圧力は、標高や天気などにより変化してい
る。また、ホイールモータの発熱により、ホイールモー
タ内部の圧力も変化する。電気自動車が運転されると、
ホイールモータが発熱し、ホイールモータの内圧が高く
なる、シールをしていても多少の空気の漏れは生じる。
水たまりに入り、ホイールモータが冷えた場合、ホイー
ルモータの内圧が低くなる。しかし、レギュレータ２の
働きにより、空気タンク１より圧縮空気が供給され、ホ
イールモータ内部には常に外気圧により0.02MPa以上高
くなる。このようにしてホイールモータ内の圧力は決し
て外気圧より低くはならず、ホイールモータ内の圧力の
方が、外気の圧力より高いため、外部から水や塵挨は進
入できない。標高が変化し、外気圧が変化した場合で
も、同様にレギュレータ２が働き、ホイールモータ内部
の圧力は常に外気圧より0.02MPa以上高くなる。The absolute pressure of the atmosphere changes depending on altitude and weather. The pressure inside the wheel motor also changes due to the heat generated by the wheel motor. When an electric car is driven,
The wheel motor generates heat, the internal pressure of the wheel motor increases, and some air leakage occurs even with sealing.
When the wheel motor enters a puddle and cools, the internal pressure of the wheel motor decreases. However, the compressed air is supplied from the air tank 1 by the operation of the regulator 2, and the inside of the wheel motor is constantly increased by 0.02 MPa or more due to the external pressure. In this way, the pressure in the wheel motor is never lower than the outside air pressure, and since the pressure in the wheel motor is higher than the pressure of the outside air, water and dust cannot enter from outside. Even when the altitude changes and the outside air pressure changes, the regulator 2 operates similarly, and the pressure inside the wheel motor always becomes higher than the outside air pressure by 0.02 MPa or more.
従来のホイールモータを用いた電気自動車は、雨天時
には約20分間走行すると、水が進入して電気のリークの
ため走行不可能になったが、本発明による電気自動車
は、２時間以上走ってもまったく問題が生じない。ま
た、ホイールモータ内部の空気が乾燥しているため、コ
イル被覆の劣化等が起きず、長期信頼性も良好である。Conventional electric vehicles using wheel motors, when running for about 20 minutes in rainy weather, water entered and it became impossible to run due to electric leakage, but the electric vehicle according to the present invention could run for more than 2 hours No problem at all. In addition, since the air inside the wheel motor is dry, deterioration of the coil coating does not occur, and the long-term reliability is good.
なお、ホイールモータ内部設定圧力は、高い方が防水
性能は高くなるが、空気の漏れ量が増えるため、シール
を強化しなければならない。このことはシール部の摩擦
損失を増加させるため、本実施例では0.02MPaとした。
しかし設定圧力はこれに限定するものではなく、電気自
動車に水センサを備え、水を検出した時には設定圧力を
0.04MPaに上げより防水性を高める、など設定圧力値を
状況により可変にすることはきわめて有効な手段であ
る。また、空気の代わりに水素、窒素など他の気体を用
いることはもちろん可能であり、特に不活性な気体を用
いることはモータの信頼性の面で効果が高い。The higher the set pressure inside the wheel motor, the higher the waterproof performance, but the amount of air leakage increases, so the seal must be strengthened. In order to increase the friction loss of the seal portion, the pressure is set to 0.02 MPa in this embodiment.
However, the set pressure is not limited to this, and the electric vehicle is provided with a water sensor, and when water is detected, the set pressure is reduced.
It is extremely effective to change the set pressure value depending on the situation, such as increasing the water resistance to 0.04 MPa. It is of course possible to use other gases such as hydrogen and nitrogen instead of air. In particular, using an inert gas is highly effective in terms of motor reliability.
［発明の効果］ 本発明の電気自動車は、圧縮空気を貯蔵する圧力貯蔵
手段と、気密手段を設けたホイールモータとを圧力伝達
手段で接続し、更に前記圧力貯蔵手段と前記気密手段と
の間に圧力調整手段を有するホイールモータを用いた電
気自動車において、前記ホイールモータ内部圧力を外気
圧より高く設定して、前記ホイールモータ内部圧力が設
定圧力より低下した場合に前記圧力調整手段により圧縮
空気を前記圧力貯蔵手段から圧力伝達手段を介して前記
ホイールモータに供給することで、前記ホイールモータ
内部圧力を常時設定圧力に調整して、ホイールモータの
防水性、防塵性を格段に向上させて、ホイールモータの
信頼性を向上させることが可能となり、雨天時でもホイ
ールモータを用いた電気自動車の走行が可能になるとい
う効果を有する。更に、外気圧とホイールモータ内部の
圧力差が低くなった時だけ圧縮空気を供給すれば良く圧
縮空気の利用効率が良いという効果を有する。[Effect of the Invention] In the electric vehicle of the present invention, the pressure storage means for storing the compressed air and the wheel motor provided with the airtight means are connected by the pressure transmitting means, and the pressure storage means and the airtight means are connected between the pressure storage means and the airtight means. In an electric vehicle using a wheel motor having pressure adjusting means, the internal pressure of the wheel motor is set higher than the outside air pressure, and when the internal pressure of the wheel motor falls below a set pressure, compressed air is released by the pressure adjusting means. By supplying the wheel motor via the pressure transmitting means to the wheel motor via a pressure transmitting means, the internal pressure of the wheel motor is constantly adjusted to a set pressure, and the waterproofness and dustproofness of the wheel motor are significantly improved. It is possible to improve the reliability of the motor, and it is possible to run an electric vehicle using a wheel motor even in rainy weather. Have fruit. Furthermore, the compressed air needs to be supplied only when the difference between the outside air pressure and the pressure inside the wheel motor is low, and the compressed air can be used efficiently.
第１図は、本発明による電気自動車の構成を示す図。 第２図は、第１図に示すホイールモータの断面図。 １……空気タンク ２……レギュレータ ３……配管 ４……ホース ５……ホイールモータ 12……気密カバー 17……リップシール FIG. 1 is a diagram showing a configuration of an electric vehicle according to the present invention. FIG. 2 is a sectional view of the wheel motor shown in FIG. 1 ... Air tank 2 ... Regulator 3 ... Piping 4 ... Hose 5 ... Wheel motor 12 ... Airtight cover 17 ... Lip seal
Claims (1)
手段を設けたホイールモータとを圧力伝達手段で接続
し、更に前記圧力貯蔵手段と前記気密手段との間に圧力
調整手段を有するホイールモータを用いた電気自動車に
おいて、前記ホイールモータ内部圧力を外気圧より高く
設定して、前記ホイールモータ内部圧力が設定圧力より
低下した場合に前記圧力調整手段により圧縮空気を前記
圧力貯蔵手段から圧力伝達手段を介して前記ホイールモ
ータに供給することで、前記ホイールモータ内部圧力を
常時設定圧力に調整することを特徴とする電気自動車。1. A wheel having pressure storing means for storing compressed air and a wheel motor provided with airtight means connected by pressure transmitting means, and further having a pressure adjusting means between said pressure storing means and said airtight means. In an electric vehicle using a motor, the internal pressure of the wheel motor is set higher than the outside air pressure, and when the internal pressure of the wheel motor falls below a set pressure, compressed air is transmitted from the pressure storage unit by the pressure adjusting unit to the pressure storage unit. An electric vehicle, wherein the pressure inside the wheel motor is constantly adjusted to a set pressure by supplying the pressure to the wheel motor via a means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31546390A JP2814737B2 (en) | 1990-11-20 | 1990-11-20 | Electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31546390A JP2814737B2 (en) | 1990-11-20 | 1990-11-20 | Electric car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04185533A JPH04185533A (en) | 1992-07-02 |
| JP2814737B2 true JP2814737B2 (en) | 1998-10-27 |
Family
ID=18065664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31546390A Expired - Lifetime JP2814737B2 (en) | 1990-11-20 | 1990-11-20 | Electric car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2814737B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648565A (en) * | 2009-12-07 | 2012-08-22 | 谢夫勒科技股份两合公司 | Electrical drive unit for a motor vehicle |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4694147B2 (en) * | 2004-05-26 | 2011-06-08 | トヨタ自動車株式会社 | Wheel support device |
| JP4183014B1 (en) | 2007-05-28 | 2008-11-19 | トヨタ自動車株式会社 | Motor insulation protection device and vehicle having the same |
| JP4285562B2 (en) | 2007-05-28 | 2009-06-24 | トヨタ自動車株式会社 | MOBILE BODY MOTOR DEVICE AND MOBILE BODY HAVING SAME |
| JP5035108B2 (en) * | 2008-05-19 | 2012-09-26 | トヨタ自動車株式会社 | Insulation structure of rotating electrical machine |
| JP6364442B2 (en) * | 2016-05-26 | 2018-07-25 | 本田技研工業株式会社 | Pressure regulator for rotating electrical machines |
-
1990
- 1990-11-20 JP JP31546390A patent/JP2814737B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648565A (en) * | 2009-12-07 | 2012-08-22 | 谢夫勒科技股份两合公司 | Electrical drive unit for a motor vehicle |
| CN102648565B (en) * | 2009-12-07 | 2015-02-18 | 谢夫勒科技股份两合公司 | Electric drive units for vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04185533A (en) | 1992-07-02 |
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