WO2019224167A2 - Wheel speed sensor, sensor head of wheel speed sensor and vehicle - Google Patents

Wheel speed sensor, sensor head of wheel speed sensor and vehicle Download PDF

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Publication number
WO2019224167A2
WO2019224167A2 PCT/EP2019/063033 EP2019063033W WO2019224167A2 WO 2019224167 A2 WO2019224167 A2 WO 2019224167A2 EP 2019063033 W EP2019063033 W EP 2019063033W WO 2019224167 A2 WO2019224167 A2 WO 2019224167A2
Authority
WO
WIPO (PCT)
Prior art keywords
base
sensor
pins
wheel speed
sensor head
Prior art date
Application number
PCT/EP2019/063033
Other languages
French (fr)
Other versions
WO2019224167A3 (en
Inventor
Weina WANG
Anwar Hegazi
Tingjun ZHANG
Ruoyu DUAN
Xinxu XIA
Chao SHEN
Shen SHAN
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2019224167A2 publication Critical patent/WO2019224167A2/en
Publication of WO2019224167A3 publication Critical patent/WO2019224167A3/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14426—Coating the end of wire-like or rod-like or cable-like or blade-like or belt-like articles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors

Definitions

  • Wheel speed sensor Sensor head of wheel speed sensor and vehicle Technical Field
  • the present utility model relates to the technical field of sensors, and in particular to a wheel speed sensor, a sensor head of a wheel speed sensor and a vehicle.
  • Wheel speed sensors are sensors for detecting a wheel speed of a vehicle, and can provide valuable wheel speed information for apparatuses, devices or systems such as electronic stability programs (ESP), anti-lock braking systems (ABS), control systems for automatic transmissions, power assist systems that are arranged on the vehicle, which is of great significance for ensuring and enhancing the operation control and safe driving of the vehicle.
  • ESP electronic stability programs
  • ABS anti-lock braking systems
  • control systems for automatic transmissions power assist systems that are arranged on the vehicle, which is of great significance for ensuring and enhancing the operation control and safe driving of the vehicle.
  • the present utility model provides a wheel speed sensor, a sensor head for the wheel speed sensor and a vehicle, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.
  • a wheel speed sensor having a sensor head and a transmission portion, the transmission portion being connected to the sensor head and having at least two transmission channels, wherein the sensor head comprises:
  • a sensor chip element configured to be entirely placed in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths.
  • the transmission portion is a wire harness
  • the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
  • the base further comprises:
  • a positioning portion provided on the base, for positioning the pins in preset positions on the base;
  • a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions;
  • a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
  • the positioning portion is provided as the deformable fixing portion, and/or the sealing portion is provided on two sides of the base.
  • the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is entirely placed in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
  • the pins and the connectors are further connected by welding.
  • the sensor head is provided with a plurality of sensor chip elements
  • the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
  • the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
  • a wheel speed sensor having a sensor head and a transmission portion, the transmission portion being connected to the sensor head and having at least two transmission channels, wherein the sensor head comprises:
  • a sensor chip element arranged in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins;
  • connectors each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths, wherein at least one of the connectors has a portion extending out of the base and positioned by folding from the outer side of the base towards the inner side thereof.
  • the at least one of the connectors is positioned, by folding, to be at least partially above the base or above at least another connector;
  • the at least one of the connectors includes two of the connectors arranged on two sides of the base; and/or
  • the portion is configured in the shape of a sheet.
  • the transmission portion is a wire harness
  • the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
  • the base further comprises:
  • a positioning portion provided on the base, for positioning the pins in preset positions on the base;
  • a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions;
  • a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
  • the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is arranged in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
  • the pins and the connectors are further connected by welding.
  • the sensor head is provided with a plurality of sensor chip elements
  • the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
  • the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
  • a sensor head for a wheel speed sensor comprising a transmission portion which is connected to the sensor head and has at least two transmission channels, wherein the sensor head comprises:
  • a sensor chip element configured to be entirely placed in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins;
  • connectors each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths.
  • the transmission portion is a wire harness
  • the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
  • the base further comprises:
  • a positioning portion provided on the base, for positioning the pins in preset positions on the base;
  • a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions;
  • a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
  • the positioning portion is provided as the deformable fixing portion, and/or the sealing portion is provided on two sides of the base.
  • the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is entirely placed in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
  • the pins and the connectors are further connected by welding.
  • the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively.
  • the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
  • a sensor head for a wheel speed sensor comprising a transmission portion which is connected to the sensor head and has at least two transmission channels, characterized in that the sensor head comprises:
  • a sensor chip element arranged in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins;
  • connectors each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths, wherein at least one of the connectors has a portion extending out of the base and positioned by folding from the outer side of the base towards the inner side thereof.
  • the at least one of the connectors is positioned, by folding, to be at least partially above the base or above at least another connector;
  • the at least one of the connectors includes two of the connectors arranged on two sides of the base; and/or
  • the portion is configured in the shape of a sheet.
  • the transmission portion is a wire harness
  • the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
  • the base further comprises:
  • a positioning portion provided on the base, for positioning the pins in preset positions on the base;
  • a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions;
  • a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
  • the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is arranged in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
  • the pins and the connectors are further connected by welding.
  • the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
  • the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
  • a vehicle provided with one or more wheel speed sensors according to any one described above, or with one or more sensor heads according to any one described above.
  • the wheel speed sensor designed and provided according to the present utility model has very significant technical advantages, which not only has a small volume, low costs, simple manufacturing processes and easy assembly, but also has a firm overall structure, a good sealing performance, stable and reliable detection signal, and therefore very strong practicability.
  • Fig. 1 is a schematic perspective structural diagram of an embodiment of a wheel speed sensor according to the present utility model.
  • Fig. 2 is a schematic perspective structural diagram of a part of a sensor head in the embodiment of the wheel speed sensor shown in Fig. 1.
  • Fig. 3 is a schematic perspective structural diagram of the sensor head of the embodiment of the wheel speed sensor shown in Fig. 1 when being assembled with a transmission portion.
  • Fig. 4 is a schematic perspective structural view of the sensor head in another embodiment of the wheel speed sensor according to the present utility model when being assembled with the transmission portion.
  • Fig. 5 is a schematic perspective structural diagram of the sensor head of the embodiment of the wheel speed sensor shown in Fig. 4 after being assembled with the transmission portion, wherein two connectors located on two sides of the base have been positioned by folding toward a central axis direction of the base.
  • Fig. 1 generally and schematically illustrates a three-dimensional structure of an embodiment of a wheel speed sensor according to the present utility model.
  • the wheel speed sensor 1 is provided with a sensor head 2 and a transmission portion 3, and is further provided with an assembly structure 4 for mounting the wheel speed sensor 1 to a wheel, which will be described in detail below by means of this embodiment.
  • the transmission part 3 may have two or more transmission channels through which wheel speed information detected by the wheel speed sensor can be transmitted outward (e.g., in the form of current signals), electric energy can be supplied to chip elements located in the sensor head 2, etc. after the transmission portion 3 and the sensor head 2 are connected to each other to form several electrical paths.
  • the sensor head 2 and the transmission portion 3 may be integrally formed by means of, for example, an injection moulding process.
  • the wheel speed sensor shown in Fig. 1 is manufactured using an injection moulding process, realizing a relatively compact, firm and reliable integrated structure.
  • Figs. 2 and 3 show a part of the sensor head 2 mentioned above and a three-dimensional structure when the sensor head 2 is assembled with the transmission portion 3, respectively, which will be described in detail below with reference to the two figures.
  • the sensor head 2 in this embodiment of the wheel speed sensor may comprise a base 10, a sensor chip element 20, and connectors 14.
  • An overall support frame of the wheel speed sensor is formed by the base 10, which particularly provides a basic support for the sensor head 2, and the base 10 is provided with a receiving portion 18 adapted to receive the sensor chip element 20.
  • the receiving portion 18 is exemplarily configured to be of a groove shape so as to receive and place the sensor chip element 20 in such a groove.
  • the present utility model completely allows the receiving portion 18 to be constructed into any suitable structural shape so as to receive and place the corresponding sensor chip elements 20 therein.
  • the sensor chip element 20 is arranged in the sensor head 2, and is a wheel speed information collection part in the wheel speed sensor, in which components such as circuits and capacitors have been integrated, so that it is suitable for the sensor chip element 20 as a whole to be placed in the receiving portion 18 of the base 10, and the sensor chip element can then be assembled and fixed on the base 10 very firmly by injection moulding.
  • the sensor chip element 20 may be connected to two or more pins; for example, in the illustrated embodiment, one sensor chip element 20 is connected to two pins 21, 22, through one of which an input signal or an output signal can be interacted with the outside, and through the other of which electric energy can be supplied to the sensor chip element.
  • the sensor chip element 20 is directly placed in the receiving portion 18 as a whole very conveniently, quickly and efficiently, so it is not necessary to apply pressure to the sensor chip element to press-fit it into the receiving portion, and then the sensor chip element 20 can be more reliably fixed to the base 10 with an injection moulding process, so that they integrally form an overall firm structure.
  • one or more positioning portions 11 may be defined on the base 10 so as to position the pins connected to the sensor chip element 20 in preset positions on the base 10. It can be understood that, without departing from the subject matter of this application, the present utility model allows the specific arrangement position, set number, shape and configuration of the positioning portions 11 to be flexibly selected and set according to the actual application situation.
  • one or more deformable fixing portions 12 may be defined on the base 10, and such deformable fixing portions 12 are provided for being deformed when subjected to external action, so that pins connected to the sensor chip element 20 can be fixed in preset positions on the base 10 in advance.
  • the external action applied to the deformable fixing portion 12 described above can be achieved in various ways including but not limited to being deformed by applying a force on or heating the deformable fixing portion 12, or a combination thereof.
  • the deformable fixing portion 12 can achieve the functions of the positioning portion 11 before deformation, it is conceivable to provide part or all of the positioning portion 11 as the deformable fixing portion 12.
  • one or more sealing portions 15 may be provided on the base 10, and such sealing portions 15 may be made of the same material as the injection moulding material, so as to be able to be better integrated with the injection moulding material to form an integrated structure during injection moulding, thereby facilitating better sealing and coating of part or all of the base 10.
  • the sealing portion 15 may be provided on two sides of the base 10 to form good sealing on both sides after injection moulding is completed, which is very advantageous for the durability of the wheel speed sensor and for ensuring a reliable transfer of the signal of wheel speed information without interference.
  • FIG. 1 shows the wheel speed sensor 1 with the auxiliary structure 16 removed; and the recessed structure 17 is configured to receive more injection moulding materials so as to facilitate the formation of a more reliable overall structure of the wheel speed sensor, and in particular, the connectors 14 can be more firmly injection moulded and fixed in the wheel speed sensor, which facilitates further improving the stable transfer reliability of signals such as wheel speed information and electric energy.
  • the transmission portion 3 in the wheel speed sensor 1 directly takes the form of a wire harness, but it should be understood that the transmission portion 3 can use any suitable parts, components or devices such as rigid plug-in connectors, various terminals to provide the aforementioned transmission channel in actual applications.
  • the transmission portion 3 will be connected to the aforementioned pins 21 and 22 respectively via the connectors 14 so as to form mutually independent electrical paths for signal interaction with the sensor chip element 20 or for supplying electric energy to the sensor chip element 20.
  • a portion of the connector 14 is injection moulded into the base 10 and has an end portion extending out of the base 10, and the connector is used to be connected to and cooperate with the transmission portion 3 in the form of a wire harness by means of such an end portion.
  • a coating portion 13 is provided at the above-mentioned end portion of the connector 14, and can be deformed when a force is applied to the coating portion 13, so that a corresponding connecting wire 31 of the wire harness placed at the end portion of the connector 14 can be coated and fixed at the position, thereby forming an electrical path from the sensor chip element 20 to the connecting wire; as mentioned above, such an electrical path can be used to enable the signal interaction of the sensor chip element 20 with the outside or the supply of electric energy to the sensor chip element 20.
  • the coating portion 13 may be arranged integrally with the connector 14 or may be arranged separately from the connector 14.
  • the need is avoided for additionally and separately arranging a plurality of coating portions in the existing wheel speed sensor to connect the connecting wires of the wire harness with the head of the wheel speed sensor one by one, which not only effectively simplifies the assembly operation, making the installation more efficient and simpler, but also further facilitates saving the cost.
  • the connectors 14 are provided as intermediate parts for connecting the sensor chip element 20 with the transmission portion 3 together to form several electrical paths.
  • the above-mentioned pins 21, 22 and the connectors 14 are all exemplarily configured to be sheet-shaped.
  • the pins 21, 22 with the sheet-shaped structure will form a larger contact surface and a more reliable mutual contact with the connectors 14 with the sheet-shaped structure as well, which facilitates realizing better and more reliable electrical connection paths.
  • the pins can also be optionally fixedly welded to the connectors 14 in the present utility model. In an optional case, two or more of these connectors 14 may use a mutual parallel arrangement.
  • two or more sensor chip elements 20 may be arranged in the sensor head 2, and the receiving portion 18 of the base 10 is correspondingly configured to have two or more receiving spaces independent of each other to respectively receive these sensor chip elements 20.
  • the receiving portion 18 of the base 10 is correspondingly configured to have two or more receiving spaces independent of each other to respectively receive these sensor chip elements 20.
  • a plurality of items of wheel speed information can be collected and output, thus completely meeting the redundancy requirement for wheel speed information in some applications.
  • a pair of sensor chip elements 20 are arranged in parallel on the sensor head 2 to provide two sets of independent wheel speed information.
  • FIG. 4 Another embodiment of the wheel speed sensor according to the present utility model is also shown in Figs. 4 and 5, in which the three- dimensional structures when the sensor head and the transmission portion are being assembled and after the assembling is completed are schematically shown respectively.
  • the wheel speed sensor is provided with a sensor head and a transmission portion, and may also be provided with an assembly structure for mounting the wheel speed sensor to a wheel, wherein the sensor head comprises a base 10, connectors 14, and a sensor chip element 20.
  • the sensor head comprises a base 10, connectors 14, and a sensor chip element 20.
  • the sensor chip element 20 is provided in the receiving portion 18 of the base 10, and the sensor chip element 20 is then fixed to the base 10 by means of injection moulding processing. It should be mentioned that before the injection moulding process, the sensor chip element 20 may be directly placed in the receiving part 18 as a whole, or the sensor chip element 20 may be placed in the receiving part 18 in a press-fit manner; and the above arrangement can be realized by adaptively setting the specific shape structure, size and the like of both the sensor chip element 20 and the receiving portion 18.
  • the connector 14 at least a portion thereof is a transmission channel arranged on the base 10 for connecting the pins 21, 22 and the transmission portion 3 to form mutually independent electrical paths for signal interaction with the sensor chip element 20 or for supplying electric energy to the sensor chip element 20.
  • at least one of the connectors 14 is configured to have a portion extending out of the base 10 and to position the portion by folding toward the inner side of the base 10 from the outer side of the base 10, that is to say, the two connectors 14 located on two sides of the base 10 can be positioned by folding in the direction of the central axis of the base 10 as illustratively shown in Fig.
  • the portion of the at least one of the connectors discussed above may be configured in the shape of a sheet or in any other suitable shape.
  • At least one of the connectors 14 may be positioned by folding such that it is at least partially located above the base 10 or above at least another connector. In this way, the overall occupied space of these connectors 14 can be effectively reduced by using such a staggered or stacked arrangement, thereby facilitating the formation of a more compact structural layout.
  • a sensor head for a wheel speed sensor takes the form of that in the wheel speed sensor designed and provided according to the present utility model, that is, the sensor head may comprise a base, a sensor chip element and connectors as discussed above, so that these significant technical advantages as mentioned above can be obtained.
  • a vehicle on which one or more wheel speed sensors or sensor heads for a wheel speed sensor designed and provided according to the present utility model are provided, for example, at least one such wheel speed sensor or sensor head for the wheel speed sensor may be provided on one or more wheels of the vehicle, so as to realize the technical advantages of the present utility model which are significantly superior to those of the prior art as described above.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Regulating Braking Force (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The present utility model relates to a wheel speed sensor, a sensor head for the wheel speed sensor and a vehicle. The wheel speed sensor has a sensor head and a transmission portion, the transmission portion being connected to the sensor head and having at least two transmission channels, wherein the sensor head comprises: a base having a receiving portion; a sensor chip element configured to be entirely placed in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths. The present utility model not only has a small volume, low costs, simple manufacturing processes and easy assembly, but also has a firm overall structure, a good sealing performance, stable and reliable detection signal, and very strong practicability.

Description

Description
Wheel speed sensor, sensor head of wheel speed sensor and vehicle Technical Field
[0001] The present utility model relates to the technical field of sensors, and in particular to a wheel speed sensor, a sensor head of a wheel speed sensor and a vehicle. Background Art
[0002] Wheel speed sensors (WSSs) are sensors for detecting a wheel speed of a vehicle, and can provide valuable wheel speed information for apparatuses, devices or systems such as electronic stability programs (ESP), anti-lock braking systems (ABS), control systems for automatic transmissions, power assist systems that are arranged on the vehicle, which is of great significance for ensuring and enhancing the operation control and safe driving of the vehicle. Although a large number and various types of various wheel speed sensors have been provided in the prior art, these existing wheel speed sensors still present some drawbacks and deficiencies in structural construction, manufacturing process, control over use costs, signal redundancy implementation, reliability, etc.
Summary of the Utility Model
[0003] In view of this, the present utility model provides a wheel speed sensor, a sensor head for the wheel speed sensor and a vehicle, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.
[0004] First, according to an aspect of the present utility model, there is provided a wheel speed sensor having a sensor head and a transmission portion, the transmission portion being connected to the sensor head and having at least two transmission channels, wherein the sensor head comprises:
a base having a receiving portion;
a sensor chip element configured to be entirely placed in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths.
[0005] In the wheel speed sensor according to the present utility model, optionally, the transmission portion is a wire harness, and the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
[0006] In the wheel speed sensor according to the present utility model, optionally, the base further comprises:
a positioning portion provided on the base, for positioning the pins in preset positions on the base;
a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions; and/or
a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
[0007] In the wheel speed sensor according to the present utility model, optionally, at least a part of the positioning portion is provided as the deformable fixing portion, and/or the sealing portion is provided on two sides of the base.
[0008] In the wheel speed sensor according to the present utility model, optionally, the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is entirely placed in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
[0009] In the wheel speed sensor according to the present utility model, optionally, the pins and the connectors are further connected by welding.
[0010] In the wheel speed sensor according to the present utility model, optionally, the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
[0011] In the wheel speed sensor according to the present utility model, optionally, the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
[0012] In addition, according to a second aspect of the present utility model, there is also provided a wheel speed sensor having a sensor head and a transmission portion, the transmission portion being connected to the sensor head and having at least two transmission channels, wherein the sensor head comprises:
a base having a receiving portion;
a sensor chip element arranged in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and
connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths, wherein at least one of the connectors has a portion extending out of the base and positioned by folding from the outer side of the base towards the inner side thereof.
[0013] In the wheel speed sensor according to the present utility model, optionally, the at least one of the connectors is positioned, by folding, to be at least partially above the base or above at least another connector;
the at least one of the connectors includes two of the connectors arranged on two sides of the base; and/or
the portion is configured in the shape of a sheet.
[0014] In the wheel speed sensor according to the present utility model, optionally, the transmission portion is a wire harness, and the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
[0015] In the wheel speed sensor according to the present utility model, optionally, the base further comprises:
a positioning portion provided on the base, for positioning the pins in preset positions on the base; a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions; and/or
a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
[0016] In the wheel speed sensor according to the present utility model, optionally, the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is arranged in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
[0017] In the wheel speed sensor according to the present utility model, optionally, the pins and the connectors are further connected by welding.
[0018] In the wheel speed sensor according to the present utility model, optionally, the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
[0019] In the wheel speed sensor according to the present utility model, optionally, the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
[0020] Furthermore, according to a third aspect of the present utility model, there is also provided a sensor head for a wheel speed sensor, the wheel speed sensor comprising a transmission portion which is connected to the sensor head and has at least two transmission channels, wherein the sensor head comprises:
a base having a receiving portion;
a sensor chip element configured to be entirely placed in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and
connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths.
[0021] In the sensor head according to the present utility model, optionally, the transmission portion is a wire harness, and the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
[0022] In the sensor head according to the present utility model, optionally, the base further comprises:
a positioning portion provided on the base, for positioning the pins in preset positions on the base;
a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions; and/or
a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
[0023] In the sensor head according to the present utility model, optionally, at least a part of the positioning portion is provided as the deformable fixing portion, and/or the sealing portion is provided on two sides of the base.
[0024] In the sensor head according to the present utility model, optionally, the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is entirely placed in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
[0025] In the sensor head according to the present utility model, optionally, the pins and the connectors are further connected by welding.
[0026] In the sensor head according to the present utility model, optionally, the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively.
[0027] In the sensor head according to the present utility model, optionally, the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
[0028] In addition, according to a fourth aspect of the present utility model, there is also provided a sensor head for a wheel speed sensor, the wheel speed sensor comprising a transmission portion which is connected to the sensor head and has at least two transmission channels, characterized in that the sensor head comprises:
a base having a receiving portion;
a sensor chip element arranged in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and
connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths, wherein at least one of the connectors has a portion extending out of the base and positioned by folding from the outer side of the base towards the inner side thereof.
[0029] In the sensor head according to the present utility model, optionally, the at least one of the connectors is positioned, by folding, to be at least partially above the base or above at least another connector;
the at least one of the connectors includes two of the connectors arranged on two sides of the base; and/or
the portion is configured in the shape of a sheet.
[0030] In the sensor head according to the present utility model, optionally, the transmission portion is a wire harness, and the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
[0031] In the sensor head according to the present utility model, optionally, the base further comprises:
a positioning portion provided on the base, for positioning the pins in preset positions on the base;
a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions; and/or
a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
[0032] In the sensor head according to the present utility model, optionally, the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is arranged in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
[0033] In the sensor head according to the present utility model, optionally, the pins and the connectors are further connected by welding.
[0034] In the sensor head according to the present utility model, optionally, the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
[0035] In the sensor head according to the present utility model, optionally, the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
[0036] In addition, according to a fifth aspect of the present utility model, there is provided a vehicle provided with one or more wheel speed sensors according to any one described above, or with one or more sensor heads according to any one described above.
[0037] The principles, features, characteristics and advantages of various technical solutions according to the present utility model will be clearly understood from the following detailed description in conjunction with the drawings. For example, it will be appreciated that as compared with the prior art, the wheel speed sensor designed and provided according to the present utility model has very significant technical advantages, which not only has a small volume, low costs, simple manufacturing processes and easy assembly, but also has a firm overall structure, a good sealing performance, stable and reliable detection signal, and therefore very strong practicability.
Brief Description of the Drawings
[0038] The technical solutions of the present utility model will be described below in further detail with reference to the drawings and embodiments. However, these drawings are designed for the purpose of explanation only and are merely intended to conceptually illustrate the structural configurations herein, and are not necessarily drawn to scale.
[0039] Fig. 1 is a schematic perspective structural diagram of an embodiment of a wheel speed sensor according to the present utility model.
[0040] Fig. 2 is a schematic perspective structural diagram of a part of a sensor head in the embodiment of the wheel speed sensor shown in Fig. 1. [0041] Fig. 3 is a schematic perspective structural diagram of the sensor head of the embodiment of the wheel speed sensor shown in Fig. 1 when being assembled with a transmission portion.
[0042] Fig. 4 is a schematic perspective structural view of the sensor head in another embodiment of the wheel speed sensor according to the present utility model when being assembled with the transmission portion.
[0043] Fig. 5 is a schematic perspective structural diagram of the sensor head of the embodiment of the wheel speed sensor shown in Fig. 4 after being assembled with the transmission portion, wherein two connectors located on two sides of the base have been positioned by folding toward a central axis direction of the base.
Detailed Description of Embodiments
[0044] Firstly, it should be noted that structural compositions, features and advantages of the wheel speed sensor, the sensor head for the wheel speed sensor and the vehicle of the present utility model will be described in detail below by way of example, however, all the descriptions are for illustration only and do not constitute any limitation to the present utility model.
[0045] In addition, for any single technical feature described or implied in the embodiments mentioned herein, the present utility model still allows any combination or removal of these technical features (or their equivalents) without any technical obstacles, and thus it should also be considered that these further embodiments according to the present utility model are within the scope of the description herein. Furthermore, for the sake of simplifying the drawings, the same or similar parts and features may only be labeled in one or several places in the same drawing.
[0046] Reference is made to Fig. 1, which generally and schematically illustrates a three-dimensional structure of an embodiment of a wheel speed sensor according to the present utility model. In this embodiment, the wheel speed sensor 1 is provided with a sensor head 2 and a transmission portion 3, and is further provided with an assembly structure 4 for mounting the wheel speed sensor 1 to a wheel, which will be described in detail below by means of this embodiment.
[0047] As shown in Fig. 1, in the wheel speed sensor 1, the transmission part 3 may have two or more transmission channels through which wheel speed information detected by the wheel speed sensor can be transmitted outward (e.g., in the form of current signals), electric energy can be supplied to chip elements located in the sensor head 2, etc. after the transmission portion 3 and the sensor head 2 are connected to each other to form several electrical paths. In order to form a firmer overall structure, the sensor head 2 and the transmission portion 3 may be integrally formed by means of, for example, an injection moulding process. The wheel speed sensor shown in Fig. 1 is manufactured using an injection moulding process, realizing a relatively compact, firm and reliable integrated structure.
[0048] Figs. 2 and 3 show a part of the sensor head 2 mentioned above and a three-dimensional structure when the sensor head 2 is assembled with the transmission portion 3, respectively, which will be described in detail below with reference to the two figures.
[0049] The sensor head 2 in this embodiment of the wheel speed sensor may comprise a base 10, a sensor chip element 20, and connectors 14. An overall support frame of the wheel speed sensor is formed by the base 10, which particularly provides a basic support for the sensor head 2, and the base 10 is provided with a receiving portion 18 adapted to receive the sensor chip element 20. As shown in Figs. 2 and 3, in the given embodiment, the receiving portion 18 is exemplarily configured to be of a groove shape so as to receive and place the sensor chip element 20 in such a groove. However, it should be recognized that according to the actual application situation, for example, since the sensor chip element 20 may have different shapes in different application situations, the present utility model completely allows the receiving portion 18 to be constructed into any suitable structural shape so as to receive and place the corresponding sensor chip elements 20 therein.
[0050] The sensor chip element 20 is arranged in the sensor head 2, and is a wheel speed information collection part in the wheel speed sensor, in which components such as circuits and capacitors have been integrated, so that it is suitable for the sensor chip element 20 as a whole to be placed in the receiving portion 18 of the base 10, and the sensor chip element can then be assembled and fixed on the base 10 very firmly by injection moulding. In order to perform operations such as signal interaction or electric energy reception, the sensor chip element 20 may be connected to two or more pins; for example, in the illustrated embodiment, one sensor chip element 20 is connected to two pins 21, 22, through one of which an input signal or an output signal can be interacted with the outside, and through the other of which electric energy can be supplied to the sensor chip element.
[0051] Through a large amount of researches, the designer of the present utility model has found that in the prior art, a plurality of components (such as individual capacitors) with different functions are generally respectively arranged at different positions of the sensor head, and then a detection signal of the wheel speed sensor is provided by means of mutual cooperation of these components, and these components are generally respectively pressed into a corresponding mating structure installed in the sensor head by using a press-fit operation method. The design, structural arrangement and assembly operation of the above components are not only complicated and time-consuming, which may cause damage to the components during the press-fitting, but also occupy a large space; moreover, due to the high assembly requirements, the requirements for mould manufacturing have been increased, so that the overall cost has been increased.
[0052] Different from the prior art, in the present utility model, the sensor chip element 20 is directly placed in the receiving portion 18 as a whole very conveniently, quickly and efficiently, so it is not necessary to apply pressure to the sensor chip element to press-fit it into the receiving portion, and then the sensor chip element 20 can be more reliably fixed to the base 10 with an injection moulding process, so that they integrally form an overall firm structure.
[0053] By way of example, in an optional case, one or more positioning portions 11 may be defined on the base 10 so as to position the pins connected to the sensor chip element 20 in preset positions on the base 10. It can be understood that, without departing from the subject matter of this application, the present utility model allows the specific arrangement position, set number, shape and configuration of the positioning portions 11 to be flexibly selected and set according to the actual application situation.
[0054] In addition, in an optional case, one or more deformable fixing portions 12 may be defined on the base 10, and such deformable fixing portions 12 are provided for being deformed when subjected to external action, so that pins connected to the sensor chip element 20 can be fixed in preset positions on the base 10 in advance. The external action applied to the deformable fixing portion 12 described above can be achieved in various ways including but not limited to being deformed by applying a force on or heating the deformable fixing portion 12, or a combination thereof. Likewise, without departing from the subject matter of the present utility model, it is possible to flexibly select and set the specific arrangement position, the set number, the shape and configuration or the like of the deformable fixing part 12 according to the actual application situation. Still further, since the deformable fixing portion 12 can achieve the functions of the positioning portion 11 before deformation, it is conceivable to provide part or all of the positioning portion 11 as the deformable fixing portion 12.
[0055] Furthermore, in an optional case, one or more sealing portions 15 may be provided on the base 10, and such sealing portions 15 may be made of the same material as the injection moulding material, so as to be able to be better integrated with the injection moulding material to form an integrated structure during injection moulding, thereby facilitating better sealing and coating of part or all of the base 10. By way of exemplary illustration only, it is shown in Figs. 2 and 3 that the sealing portion 15 may be provided on two sides of the base 10 to form good sealing on both sides after injection moulding is completed, which is very advantageous for the durability of the wheel speed sensor and for ensuring a reliable transfer of the signal of wheel speed information without interference. Figs. 2 and 3 show an auxiliary structure 16 used in the injection moulding process and a recessed structure 17 for receiving injection moulding materials, and the auxiliary structure 16 can be removed after the injection moulding is completed, for example, Fig. 1 shows the wheel speed sensor 1 with the auxiliary structure 16 removed; and the recessed structure 17 is configured to receive more injection moulding materials so as to facilitate the formation of a more reliable overall structure of the wheel speed sensor, and in particular, the connectors 14 can be more firmly injection moulded and fixed in the wheel speed sensor, which facilitates further improving the stable transfer reliability of signals such as wheel speed information and electric energy.
[0056] In the given embodiment, the transmission portion 3 in the wheel speed sensor 1 directly takes the form of a wire harness, but it should be understood that the transmission portion 3 can use any suitable parts, components or devices such as rigid plug-in connectors, various terminals to provide the aforementioned transmission channel in actual applications. The transmission portion 3 will be connected to the aforementioned pins 21 and 22 respectively via the connectors 14 so as to form mutually independent electrical paths for signal interaction with the sensor chip element 20 or for supplying electric energy to the sensor chip element 20.
[0057] Specifically, with reference to Figs. 2 and 3, in the given example, a portion of the connector 14 is injection moulded into the base 10 and has an end portion extending out of the base 10, and the connector is used to be connected to and cooperate with the transmission portion 3 in the form of a wire harness by means of such an end portion. A coating portion 13 is provided at the above-mentioned end portion of the connector 14, and can be deformed when a force is applied to the coating portion 13, so that a corresponding connecting wire 31 of the wire harness placed at the end portion of the connector 14 can be coated and fixed at the position, thereby forming an electrical path from the sensor chip element 20 to the connecting wire; as mentioned above, such an electrical path can be used to enable the signal interaction of the sensor chip element 20 with the outside or the supply of electric energy to the sensor chip element 20. The coating portion 13 may be arranged integrally with the connector 14 or may be arranged separately from the connector 14. By using the way where the coating portion 13 and the connecting portion 14 are integrally arranged, the need is avoided for additionally and separately arranging a plurality of coating portions in the existing wheel speed sensor to connect the connecting wires of the wire harness with the head of the wheel speed sensor one by one, which not only effectively simplifies the assembly operation, making the installation more efficient and simpler, but also further facilitates saving the cost.
[0058] The connectors 14 are provided as intermediate parts for connecting the sensor chip element 20 with the transmission portion 3 together to form several electrical paths. In the given embodiment, the above-mentioned pins 21, 22 and the connectors 14 are all exemplarily configured to be sheet-shaped. In this way, when the sensor chip element 20 is placed in the receiving portion 18 of the base 10 as a whole, the pins 21, 22 with the sheet-shaped structure will form a larger contact surface and a more reliable mutual contact with the connectors 14 with the sheet-shaped structure as well, which facilitates realizing better and more reliable electrical connection paths. Of course, in order to be safer and more reliable, the pins can also be optionally fixedly welded to the connectors 14 in the present utility model. In an optional case, two or more of these connectors 14 may use a mutual parallel arrangement.
[0059] In actual applications, for example, due to the consideration of redundancy requirements for wheel speed information, it may be necessary to arrange multiple wheel speed sensors on one wheel at the same time; however, this will inevitably increase the application cost and also impose higher requirements for the installation environment, for example, at wheels, which will incur considerable equipment installation and maintenance expenses, especially in the case of large-scale applications.
[0060] In order to solve the above problems, according to the design idea of the present utility model, two or more sensor chip elements 20 may be arranged in the sensor head 2, and the receiving portion 18 of the base 10 is correspondingly configured to have two or more receiving spaces independent of each other to respectively receive these sensor chip elements 20. In this way, by disposing these sensor chip elements 20, a plurality of items of wheel speed information can be collected and output, thus completely meeting the redundancy requirement for wheel speed information in some applications. As an example, in the embodiment discussed above, it is exemplarily illustrated that a pair of sensor chip elements 20 are arranged in parallel on the sensor head 2 to provide two sets of independent wheel speed information. Therefore, by using the above technical solution according to the present utility model, not only can the redundancy requirement for wheel speed information be met, but also it is especially easy to manufacture and convenient to install, the occupied space is small, the overall cost is low, and the detection signal is stable and reliable.
[0061] Another embodiment of the wheel speed sensor according to the present utility model is also shown in Figs. 4 and 5, in which the three- dimensional structures when the sensor head and the transmission portion are being assembled and after the assembling is completed are schematically shown respectively.
[0062] Firstly, in the embodiment shown in Fig. 4, the wheel speed sensor is provided with a sensor head and a transmission portion, and may also be provided with an assembly structure for mounting the wheel speed sensor to a wheel, wherein the sensor head comprises a base 10, connectors 14, and a sensor chip element 20. As for the technical content such as the structure, composition, function, connection and matching, installation arrangement, and quantity selection of the same or similar parts in this embodiment as those in the previous embodiment shown in Figs. 1 to 3, since the detailed description and discussion have been made in the foregoing, reference can be made to the specific description at the corresponding place in the foregoing, which will not be repeated here.
[0063] In this embodiment, the sensor chip element 20 is provided in the receiving portion 18 of the base 10, and the sensor chip element 20 is then fixed to the base 10 by means of injection moulding processing. It should be mentioned that before the injection moulding process, the sensor chip element 20 may be directly placed in the receiving part 18 as a whole, or the sensor chip element 20 may be placed in the receiving part 18 in a press-fit manner; and the above arrangement can be realized by adaptively setting the specific shape structure, size and the like of both the sensor chip element 20 and the receiving portion 18. [0064] In addition, for the connector 14, at least a portion thereof is a transmission channel arranged on the base 10 for connecting the pins 21, 22 and the transmission portion 3 to form mutually independent electrical paths for signal interaction with the sensor chip element 20 or for supplying electric energy to the sensor chip element 20. Different from the previous embodiment, in this embodiment, at least one of the connectors 14 is configured to have a portion extending out of the base 10 and to position the portion by folding toward the inner side of the base 10 from the outer side of the base 10, that is to say, the two connectors 14 located on two sides of the base 10 can be positioned by folding in the direction of the central axis of the base 10 as illustratively shown in Fig. 5, thereby effectively reducing the overall size of the wheel speed sensor and reducing its occupied space, thereby enabling the application area of the present utility model to be wider and more flexible. By way of example, the portion of the at least one of the connectors discussed above may be configured in the shape of a sheet or in any other suitable shape.
[0065] In an optional case, at least one of the connectors 14 (e.g., two connectors located on both sides of the base 10) may be positioned by folding such that it is at least partially located above the base 10 or above at least another connector. In this way, the overall occupied space of these connectors 14 can be effectively reduced by using such a staggered or stacked arrangement, thereby facilitating the formation of a more compact structural layout.
[0066] In addition, according to further technical solutions of the present utility model, there is also provided a sensor head for a wheel speed sensor, and the sensor head takes the form of that in the wheel speed sensor designed and provided according to the present utility model, that is, the sensor head may comprise a base, a sensor chip element and connectors as discussed above, so that these significant technical advantages as mentioned above can be obtained. It can be understood that since the two embodiments have been listed in the foregoing, and the technical contents such as the structure, composition, function, connection and matching, installation arrangement, and quantity selection of the sensor head for the wheel speed sensor as well as the base, the sensor chip element and the connectors included in the sensor head have been described in great detail by using such an exemplary example, a direct reference can be made to the detailed description of the corresponding parts mentioned above, and it is not necessary to repeat the description here. [0067] Furthermore, according to yet another technical solution of the present utility model, there is also provided a vehicle, on which one or more wheel speed sensors or sensor heads for a wheel speed sensor designed and provided according to the present utility model are provided, for example, at least one such wheel speed sensor or sensor head for the wheel speed sensor may be provided on one or more wheels of the vehicle, so as to realize the technical advantages of the present utility model which are significantly superior to those of the prior art as described above.
[0068] The wheel speed sensor, the sensor head for the wheel speed sensor and the vehicle according to the present utility model have been described in detail above by way of example only, and these examples are only for the purpose of explaining the principle of the present utility model and its implementation, rather than the limitation of the present utility model. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the present utility model. For example, the assembly structure 4 and/or the recessed structure 17 in the given embodiment may be modified or omitted according to actual application requirements. As another example, since many types of wheel speed sensors have been provided in the prior art, other parts, modules, devices or structures, which are not mentioned in this description and may be provided in the wheel speed sensors, may refer to and use the corresponding parts, modules, devices or structures in these existing wheel speed sensors, and these existing techniques are all allowed and can be used by the present utility model, so it is not necessary to explain them all herein. Therefore, all the equivalent technical solutions should fall within the scope of the present utility model and be defined by the claims of the present utility model.

Claims

Claims
1. Wheel speed sensor having a sensor head and a transmission portion, the transmission portion being connected to the sensor head and having at least two transmission channels, characterized in that the sensor head comprises:
a base having a receiving portion;
a sensor chip element configured to be entirely placed in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and
connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths.
2. Wheel speed sensor according to Claim 1, wherein the transmission portion is a wire harness, and the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
3. Wheel speed sensor according to Claim 2, wherein the base further comprises:
a positioning portion provided on the base, for positioning the pins in preset positions on the base;
a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions; and/or
a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
4. Wheel speed sensor according to Claim 3, wherein at least a part of the positioning portion is provided as the deformable fixing portion, and/or the sealing portion is provided on two sides of the base.
5. Wheel speed sensor according to Claim 1, wherein the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is entirely placed in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
6. Wheel speed sensor according to Claim 5, wherein the pins and the connectors are further connected by welding.
7. Wheel speed sensor according to any one of Claims 1-6, wherein the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
8. Wheel speed sensor according to Claim 7, wherein the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
9. Wheel speed sensor having a sensor head and a transmission portion, the transmission portion being connected to the sensor head and having at least two transmission channels, characterized in that the sensor head comprises:
a base having a receiving portion;
a sensor chip element arranged in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and
connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths, wherein at least one of the connectors has a portion extending out of the base and positioned by folding from the outer side of the base towards the inner side thereof.
10. Wheel speed sensor according to Claim 9, wherein the at least one of the connectors is positioned, by folding, to be at least partially above the base or above at least another connector; the at least one of the connectors includes two of the connectors arranged on two sides of the base; and/or the portion is configured in the shape of a sheet.
11. Wheel speed sensor according to Claim 9, wherein the transmission portion is a wire harness, and the connector is provided with a first end and a second end which are respectively connected to the pin and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
12. Wheel speed sensor according to Claim 11, wherein the base further comprises:
a positioning portion provided on the base, for positioning the pins in preset positions on the base;
a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions; and/or
a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
13. Wheel speed sensor according to Claim 9, wherein the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is arranged in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
14. Wheel speed sensor according to Claim 13, wherein the pins and the connectors are further connected by welding.
15. Wheel speed sensor according to any one of Claims 9-14, wherein the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
16. Wheel speed sensor according to Claim 15, wherein the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
17. Sensor head for a wheel speed sensor, the wheel speed sensor comprising a transmission portion connected to the sensor head and having at least two transmission channels, characterized in that the sensor head comprises:
a base having a receiving portion;
a sensor chip element configured to be entirely placed in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and
connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths.
18. Sensor head according to Claim 17, wherein the transmission portion is a wire harness, and the connector is provided with a first end and a second end which are respectively connected to the pins and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
19. Sensor head according to Claim 18, wherein the base further comprises: a positioning portion provided on the base, for positioning the pins in preset positions on the base;
a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions; and/or
a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
20. Sensor head according to Claim 19, wherein at least a part of the positioning portion is provided as the deformable fixing portion, and/or the sealing portion is provided on two sides of the base.
21. Sensor head according to Claim 17, wherein the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is entirely placed in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
22. Sensor head according to Claim 21, wherein the pins and the connectors are further connected by welding.
23. Sensor head according to any one of Claims 17-22, wherein the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively.
24. Sensor head according to Claim 23, wherein the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
25. Sensor head for a wheel speed sensor, the wheel speed sensor comprising a transmission portion connected to the sensor head and having at least two transmission channels, characterized in that the sensor head comprises:
a base having a receiving portion;
a sensor chip element arranged in the receiving portion and then fixed to the base by means of injection moulding, the sensor chip element being connected to at least two pins; and
connectors, each having at least a portion arranged on the base, for connecting the pins and the transmission channels to form at least two independent electrical paths, wherein at least one of the connectors has a portion extending out of the base and positioned by folding from the outer side of the base towards the inner side thereof.
26. Sensor head according to Claim 25, wherein the at least one of the connectors is positioned, by folding, to be at least partially above the base or above at least another connector;
the at least one of the connectors includes two of the connectors arranged on two sides of the base; and/or the portion is configured in the shape of a sheet.
27. Sensor head according to Claim 25, wherein the transmission portion is a wire harness, and the connector is provided with a first end and a second end which are respectively connected to the pins and the transmission portion, the second end extending out of the base and being provided with a coating part for coating and fixing a connecting wire of the wire harness after being deformed by force, and the coating portion being disposed integrally with the connector, or the coating portion being disposed separately from the connector.
28. Sensor head according to Claim 27, wherein the base further comprises: a positioning portion provided on the base, for positioning the pins in preset positions on the base;
a deformable fixing portion provided on the base, for being deformed when subjected to external action to fix the pins in the preset positions; and/or
a sealing portion provided on the base and made of the same material as an injection moulding material, for being formed integrally with the injection moulding material during injection moulding to seal and coat at least a part of the base.
29. Sensor head according to Claim 28, wherein the receiving portion is configured in the shape of a groove; and/or both the pins and the connectors are configured in the shape of a sheet, and when the sensor chip element is arranged in the receiving portion, the pins and the connectors come into contact with each other to form electrical connections.
30. Sensor head according to Claim 25, wherein the pins and the connectors are further connected by welding.
31. Sensor head according to any one of Claims 25-30, wherein the sensor head is provided with a plurality of sensor chip elements, and the receiving portion is provided with a plurality of receiving spaces independent of each other for receiving the plurality of sensor chip elements respectively; and/or at least two of the connectors are arranged parallel to each other.
32. Sensor head according to Claim 31, wherein the sensor head is provided with a pair of the sensor chip elements, which are arranged in parallel in the sensor head.
33. Vehicle, characterized in that the vehicle is provided with one or more wheel speed sensors of any one of Claims 1-16, or with one or more sensor heads of any one of Claims 17-32.
PCT/EP2019/063033 2018-05-25 2019-05-21 Wheel speed sensor, sensor head of wheel speed sensor and vehicle WO2019224167A2 (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2020088895A1 (en) * 2018-10-31 2020-05-07 Robert Bosch Gmbh Connection support for a wheel speed sensor
EP3756851A1 (en) * 2019-06-25 2020-12-30 Nxp B.V. Dual sensor assembly and method of fabrication
WO2022214373A1 (en) * 2021-04-07 2022-10-13 Robert Bosch Gmbh Sensor unit and method for producing a sensor unit
WO2023277566A1 (en) * 2021-06-30 2023-01-05 주식회사 만도 Wheel speed sensing device
DE102021133000A1 (en) 2021-09-27 2023-03-30 Hyundai Mobis Co., Ltd. Wheel speed sensor for vehicle

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CN116593727B (en) * 2023-05-18 2023-10-31 温州伟力汽车部件有限公司 ABS sensor end and automatic injection molding manufacturing equipment thereof

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FR2837926B1 (en) * 2002-03-27 2004-05-28 Siemens Vdo Automotive METHOD OF MANUFACTURING A WHEEL SPEED SENSOR AND CORRESPONDING SENSOR
DE102009000428A1 (en) * 2009-01-27 2010-07-29 Robert Bosch Gmbh Method for producing a sensor
DE102009028963A1 (en) * 2009-08-28 2011-03-03 Robert Bosch Gmbh Connection arrangement for a sensor arrangement and sensor arrangement
CN203011935U (en) * 2012-09-03 2013-06-19 大陆汽车电子(长春)有限公司 Wheel speed sensor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020088895A1 (en) * 2018-10-31 2020-05-07 Robert Bosch Gmbh Connection support for a wheel speed sensor
EP3756851A1 (en) * 2019-06-25 2020-12-30 Nxp B.V. Dual sensor assembly and method of fabrication
US10942227B2 (en) 2019-06-25 2021-03-09 Nxp B.V. Dual sensor assembly and method of fabrication
WO2022214373A1 (en) * 2021-04-07 2022-10-13 Robert Bosch Gmbh Sensor unit and method for producing a sensor unit
WO2023277566A1 (en) * 2021-06-30 2023-01-05 주식회사 만도 Wheel speed sensing device
DE102021133000A1 (en) 2021-09-27 2023-03-30 Hyundai Mobis Co., Ltd. Wheel speed sensor for vehicle
US11940460B2 (en) 2021-09-27 2024-03-26 Hyundai Mobis Co., Ltd. Wheel speed sensor for vehicle

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