EP3350057A1 - Fahrzeuglenkrad - Google Patents
FahrzeuglenkradInfo
- Publication number
- EP3350057A1 EP3350057A1 EP16766924.1A EP16766924A EP3350057A1 EP 3350057 A1 EP3350057 A1 EP 3350057A1 EP 16766924 A EP16766924 A EP 16766924A EP 3350057 A1 EP3350057 A1 EP 3350057A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical conductor
- steering wheel
- vehicle steering
- sheath
- plastic part
- 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.)
- Withdrawn
Links
- 239000004033 plastic Substances 0.000 claims abstract description 64
- 229920003023 plastic Polymers 0.000 claims abstract description 64
- 239000004020 conductor Substances 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000006260 foam Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000016571 aggressive behavior Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/06—Rims, e.g. with heating means; Rim covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/06—Rims, e.g. with heating means; Rim covers
- B62D1/065—Steering wheels with heating and ventilating means
Definitions
- the present invention generally relates to a vehicle steering wheel mounted on a motor vehicle, and in particular a vehicle wheel with at least one electrical conductor which is at least partially embedded or overmolded in a plastic material such as polyurethane.
- An object of the present invention is to meet the disadvantages of the documents of the prior art mentioned above and in particular, first of all, to propose a vehicle steering wheel with an electrical conductor which is at least partially overmolded in a material plastic such as polyurethane, but whose manufacture, during the operation of making the plastic part, has reduced risks of leakage of liquid plastic.
- a first aspect of the invention relates to a vehicle steering wheel comprising:
- At least one plastic part made from a fluid base material with a method such as injection,
- At least one electrical conductor of which at least a first portion is at least partially overmolded by said at least one plastic part, and comprising at least a second portion which extends out of said at least one plastic part
- the flywheel comprises at least one sheath added around a third portion of said at least one electrical conductor, ranging from said at least one first portion to said at least one second portion, said at least one sheath forming an interface sealing to prevent leakage of base material along said at least one electrical conductor, during overmoulding of said at least first portion by said at least one plastic portion.
- the vehicle steering wheel according to the present implementation comprises at least one electrical conductor which is partially overmoulded / embedded in a plastic material, such as polyurethane.
- the invention proposes to implant a sheath portion around this electrical conductor, in the area straddling the plastic material and the free portion of the electrical conductor. In other words, this zone (the third portion) is opposite the manufacturing mold used to mold the plastic part.
- the sheath acts as a sealing interface at the mold and as it has a smooth or continuous external surface without asperities, it prevents leakage along the electrical conductor of liquid or fluid plastic outwardly. .
- said at least one sheath is a heat-shrinkable sheath retracted around said at least one electrical conductor.
- a sheath is easy to set up and ensures good contact between the electrical conductor and the inside of the sheath, which further limits the risk of leakage between the sheath and the driver.
- said at least one electrical conductor is a bundle comprising at least two cables or electrical wires.
- the beam is a cable strand.
- the vehicle steering wheel comprises a glue arranged between said at least one sheath and said at least one electrical conductor. Such an adhesive makes it possible to fill the voids or spaces between the electrical conductor and the sheath, in the case where the electrical conductor has asperities or discontinuities on its external surface.
- the vehicle steering wheel comprises at least one other plastic part, made before said at least one plastic part, and comprising retaining means arranged to retain and / or position on the steering wheel said at least a second portion, at least during the production of said at least one plastic part.
- the retaining means on the other plastic part make it possible to simplify the tooling or the manufacturing mold of the plastic part which overmould at least partially the electrical conductor. This also ensures that the driver will be in the correct position when closing the mold which avoids any risk of degradation of the connector or quality defect positioning of the connector.
- said at least one other portion of plastic material comprises at least one cavity arranged to receive said at least a second portion.
- said at least one other plastic part is made of polyurethane.
- the vehicle steering wheel comprises a connector arranged at a free end of said at least a second portion.
- the cavity is arranged to receive and retain the connector.
- said at least one plastic part is made of polyurethane.
- a second aspect of the invention relates to a motor vehicle comprising a vehicle steering wheel according to the first aspect of the invention.
- a third aspect of the invention relates to a method of manufacturing a vehicle steering wheel comprising a step of overmolding at least partially at least a first portion of at least one electrical conductor by at least a portion of plastic, made to from a fluid base material with a process such as injection,
- the method comprising a step prior to the overmolding step of adding at least one sheath around a third portion of said at least one electrical conductor, ranging from said at least a first portion to said at least a second portion, so forming with said at least one sheath a sealing interface for preventing leakage of base material along said at least one electrical conductor, upon overmolding said at least a first portion by said at least one plastic portion.
- the third aspect of the invention relates to a method of manufacturing a vehicle steering wheel according to the first aspect of the invention.
- FIG. 1 shows a schematic view of a steering wheel according to the invention, with an electrical conductor which is partially overmolded in a plastic material;
- FIG. 2 shows a section of the steering wheel of Figure 1, at the electrical conductor in its portion overmolded by the plastic material.
- FIG. 1 shows a front view of a flywheel according to the invention, which comprises a plastic part 10, and another plastic part 40.
- An electrical conductor 20 is partially overmolded in the plastic part 1 0 , and opens at the top of the other plastic part 40, for housing a connector 24 attached to a free end of the electrical conductor 20 in a cavity 41 formed in the other plastic part 40.
- the electrical conductor 20 thus comprises a first portion overmolded or embedded in the plastic part 10 and a second free portion, which extends out of the plastic part 10.
- the electrical conductor 20 comprises two individual conductors 22 and 23 which supply heating resistors arranged in the rim of the steering wheel, for example, these conductors can be protected by insulation sheaths not shown.
- the plastic part 10 is made with a molding operation. It is conceivable to use an injectable polymer in liquid or fluid form, such as polyurethane for example.
- an injectable polymer in liquid or fluid form, such as polyurethane for example.
- the invention proposes to add a sheath 30, a length between 5 and 50mm, around the electrical conductor 20, locally at the electrical conductor portion 20 facing the manufacturing mold. That is, the sheath 30 is in contact with at least one of the cavities of the mold during the injection of the plastic portion 10, a first end of said sheath 30 being positioned in the cavity receiving the part of plastic material 10 and the other end opening to the outside of the cavity.
- a third portion extending from the first portion of the electrical conductor 20 overmolded to the second portion of the free electrical conductor 20 is covered by the sheath 30.
- a heat-shrinkable sheath that is easy to position at good place, and then retracted around the electrical conductor 20 under the effect of heating.
- the retaining means are arranged to retain the electrical conductor 20 and / or the connector 24 in the cavity 41, which improves the molding operation of the plastic part 10 because the position of the electrical conductor 20 is controlled.
- FIG 2 shows a section of the steering wheel of Figure 1, along a broken line (ll-ll).
- ll-ll a broken line
- the conductors 22 23 and the plastics 10 and 40 are shown for clarity.
- the other components generally used for the construction of a steering wheel such as armature or sheathing do not appear.
- the sheath 30 thus seals between itself and the electrical conductor 20.
- the sheath 30 still seals between itself and the electrical conductor 20, but also: - between it same and a manufacturing mold (which would come into contact with the sheath 30 and the other plastic part 40 from above);
- the electrical conductor 20 thus comprises the two unitary conductors 22 and 23 which are wound in a conventional manner on one another spirally to form for example a strand. Such winding leads to an outer surface of the irregular electrical conductor and with asperities.
- the sheath 30 covers the electrical conductor 20 and has in turn a smooth and continuous outer surface, which allows to form an effective sealing interface with the manufacturing mold to limit leakage.
- a filler material between the sheath 30 and the electrical conductor 20 to fill the voids or internal spaces between these two components.
- this filler blocks the escape paths in the sheath 30 itself.
- An adhesive 31 may be provided, for example, which may already be present on the thermoformable sheath before it is positioned on the connectors.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1558594A FR3040965B1 (fr) | 2015-09-15 | 2015-09-15 | Volant de vehicule |
| PCT/EP2016/071655 WO2017046137A1 (fr) | 2015-09-15 | 2016-09-14 | Volant de vehicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3350057A1 true EP3350057A1 (de) | 2018-07-25 |
Family
ID=54783790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16766924.1A Withdrawn EP3350057A1 (de) | 2015-09-15 | 2016-09-14 | Fahrzeuglenkrad |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20180244298A1 (de) |
| EP (1) | EP3350057A1 (de) |
| CN (1) | CN108025756A (de) |
| FR (1) | FR3040965B1 (de) |
| WO (1) | WO2017046137A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3006976B1 (fr) * | 2013-06-14 | 2016-02-26 | Autoliv Dev | Volant de vehicule |
| FR3043381B1 (fr) | 2015-11-11 | 2018-04-27 | Autoliv Development Ab | Volant de vehicule |
| JP6789891B2 (ja) * | 2017-06-30 | 2020-11-25 | 日本プラスト株式会社 | ハンドル |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140326708A1 (en) * | 2013-05-02 | 2014-11-06 | W.E.T. Automotive Systems, Ltd. | Liquid resistant heating element |
| US20150122790A1 (en) * | 2012-04-27 | 2015-05-07 | Nihon Plast Co., Ltd. | Steering handle, and method and apparatus for manufacturing the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB779918A (en) * | 1956-08-31 | 1957-07-24 | Lawrence Frank Fulham | Improvements in electrical heaters for steering wheels |
| CN1453172B (zh) * | 2002-04-25 | 2011-01-26 | 松下电器产业株式会社 | 方向盘 |
| DE102004021979A1 (de) * | 2004-05-04 | 2005-11-24 | Eichenauer Heizelemente Gmbh & Co. Kg | Verfahren zum elektrischen Isolieren eines elektrischen Funktionselements und derart isolierte Funktionselemente aufweisende Einrichtung |
| CN101611086B (zh) * | 2006-11-01 | 2013-10-09 | 陶氏环球技术有限责任公司 | 聚氨酯组合物、由其制备的制品及其制备方法 |
| GB0921658D0 (en) * | 2009-12-10 | 2010-01-27 | Autoliv Dev | A steering wheel |
| EP2511154B1 (de) * | 2011-04-06 | 2013-05-29 | Autoliv Development AB | Lenkrad |
| CN103374111B (zh) * | 2012-04-27 | 2015-02-11 | 温州市登达化工有限公司 | 汽车方向盘用慢回弹聚氨酯软泡原液的制备方法 |
| KR101836518B1 (ko) * | 2012-08-23 | 2018-03-08 | 현대자동차주식회사 | 발열부를 갖는 스티어링휠 및 그 스티어링휠의 발열부 설치방법 |
| CN203294168U (zh) * | 2013-05-22 | 2013-11-20 | 北汽福田汽车股份有限公司 | 方向盘骨架、方向盘和车辆 |
| JP6140653B2 (ja) * | 2014-06-20 | 2017-05-31 | 豊田合成株式会社 | ヒータエレメントとステアリングホイール |
-
2015
- 2015-09-15 FR FR1558594A patent/FR3040965B1/fr not_active Expired - Fee Related
-
2016
- 2016-09-14 EP EP16766924.1A patent/EP3350057A1/de not_active Withdrawn
- 2016-09-14 CN CN201680053739.6A patent/CN108025756A/zh active Pending
- 2016-09-14 WO PCT/EP2016/071655 patent/WO2017046137A1/fr active Application Filing
- 2016-09-14 US US15/758,493 patent/US20180244298A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150122790A1 (en) * | 2012-04-27 | 2015-05-07 | Nihon Plast Co., Ltd. | Steering handle, and method and apparatus for manufacturing the same |
| US20140326708A1 (en) * | 2013-05-02 | 2014-11-06 | W.E.T. Automotive Systems, Ltd. | Liquid resistant heating element |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2017046137A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180244298A1 (en) | 2018-08-30 |
| WO2017046137A1 (fr) | 2017-03-23 |
| FR3040965A1 (fr) | 2017-03-17 |
| FR3040965B1 (fr) | 2018-08-03 |
| CN108025756A (zh) | 2018-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20180313 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20190308 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Effective date: 20190903 |