WO2012149909A1 - Wheel speed sensor - Google Patents
Wheel speed sensor Download PDFInfo
- Publication number
- WO2012149909A1 WO2012149909A1 PCT/CN2012/075086 CN2012075086W WO2012149909A1 WO 2012149909 A1 WO2012149909 A1 WO 2012149909A1 CN 2012075086 W CN2012075086 W CN 2012075086W WO 2012149909 A1 WO2012149909 A1 WO 2012149909A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- cable
- sensing element
- wheel speed
- speed sensor
- 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.)
- Ceased
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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
Definitions
- wheel speed sensors There are two types of wheel speed sensors commonly used, one is passive wheel speed sensor and another is active wheel speed sensor. Compared with the passive wheel speed sensor, the active wheel speed sensor has the relatively small volume, light weight, high integration level, great anti-interference capacity, and other advantages. Thus the active wheel speed sensor becomes more and more popular.
- the integral overmolding is made directly to form an integral housing.
- This manufacturing process can produce one type of the wheel speed sensors. Different sensing elements require different molds and production lines. Thereby, the flexibility of the product design is poor, and it is impossible to meet the requirement of using a single mold for manufacturing different types or models of wheel speed sensors in batch.
- Fig. 2 is a schematic perspective view of an H-terminal used in the existing conventional active wheel speed sensor
- Fig. 4 is a schematic perspective view of a holder receiving the assembly shown in Fig. 3;
- Fig. 6 is a schematic perspective view after the sensing element in Fig. 5 is electrically connected to the H-terminal in the holder;
- Fig. 10 is a schematic perspective view of a sensor core according to an illustrative embodiment of the present invention.
- Fig. 11 is a general structural schematic view of a wheel speed sensor according to an illustrative embodiment of the present invention.
- an additional intermediate element namely an H-terminal
- an additional connecting process is required, thereby resulting complex manufacturing processes, long production cycle and high production cost.
- the risk of reducing the reliability of the wheel speed sensor is increased.
- the integral overmolding step is carried out directly after the H-terminal is electrically connected to the sensing element, this process may cause some disadvantages such as the products produced are single in type and the flexibility of the product design is poor.
- a cable 11 and a sensing element 13 are received in a holder 14, and wires 12 of the cable 11 are directly electrically connected to leads of the sensing element 13 by means of resistance welding, as shown in Fig. 9.
- Through holes 15 are provided in the holder 14 at the positions corresponding to the electrically connecting positions of the wires 12 and the leads of the sensing element 13, so as to facilitate the resistance welding.
- the predetermined length is in a range of from 4 mm to 8 mm
- the width of the predetermined cross section is in a range of from 0.9 mm to 1.5 mm
- the thickness of the predetermined cross section is in a range of from 0.18 mm to 0.28 mm.
- a second molding step is carried out in another mold for the sensor core shown in Fig. 10, so as to form outside of the sensor core a second housing comprising a flange 17 and ribs 18, and thereby obtaining the wheel speed sensor as shown in Fig. 11 finally.
- the second molding step corresponding to the notches 160 on the first housing 16, several or a plurality of bumps (not shown) engaging with the notches 160 are formed on the second housing to bring an interference fit between the first housing 16 and the second housing.
- the electrical connection between the cable and the sensing element can be made via a single step, thereby the manufacturing process is greatly simplified.
- the omission of the H-terminal reduces the amount of the components, thereby the product design is simplified.
- the omission of the connecting process of the H-terminal simplifies the manufacturing process, thereby the production cost is reduced and the production efficiency is improved.
- the holder receiving the sensing element and the cable is formed as an independent intermediate product, i.e., the sensor core, after the first molding step.
- the sensor core can be used as a universal or common core for use in the production of different wheel speed sensors during the subsequent working procedure.
- the wheel speed sensor according to the present invention can meet market requirements especially for low volumes and high variety (also called as "Variant Design"), thereby greatly reducing the types of tool-inserts, tool-costs and test-costs, shorten the lead time and reduce total cost of the product.
- the illustrative embodiment of the present invention includes a step of forming an independent sensor core, this step also is optional during the practice. In other words, this step can be omitted according to actual demands. Obviously, all these changes or modifications fall within the scope of the present invention.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
A wheel speed sensor comprises a sensing element (13), a cable (11), a holder (14) for receiving the sensing element (13) and the cable (11), and an insulating housing for encapsulating the holder (14), the sensing element (13) being electrically connected to a wire (12) at one end of the cable (11) by a lead, and the other end of the cable (11) being connected to an electrical control unit during use. Wherein, the lead and the wire (12) are electrically connected to each other by resistance welding, the wire (12) being superposed on the lead. The insulating housing is a two-piece housing comprising a first housing (16) and a second housing, and wherein the first housing (16) is used to house the sensing element (13), the cable (11) and the holder (14) to form a sensor core, and the second housing is formed outside of the sensor core. The wheel speed sensor has the advantages of simple structure, convenient manufacturing process and low production cost and so on.
Description
WHEEL SPEED SENSOR
FIELD OF THE INVENTION
The present invention relates to a sensor manufacturing technique, and especially to a wheel speed sensor, which is used in an anti-lock braking system (ABS for short) of a vehicle for real-time detection of wheel speed.
BACKGROUND OF THE INVENTION
It is well-known in the art that it is possible for the wheels of a vehicle such as an automobile during running to lock up under emergency braking. In order to prevent the wheel from locking up, the anti-lock braking system as a necessary safety system has been widely used in the vehicle. During the braking of the vehicle, a wheel-speed sensor in the anti-lock braking system detects the speed of the wheel real-time and transmits the detected signal to an electrical control unit (ECU). The electrical control unit carries out logical judgment, analysis and calculation for processing these signals. Once it detects that the wheel is about to lock up, a command is sent to a hydraulic or pneumatic modulator to duly adjust the pressure in the wheel-brake cylinder so as to prevent the wheel from locking up, thereby ensuring the favorable running stability during the braking process of the vehicle and avoiding a traffic accident.
There are two types of wheel speed sensors commonly used, one is passive wheel speed sensor and another is active wheel speed sensor. Compared with the passive wheel speed sensor, the active wheel speed sensor has the relatively small volume, light weight, high integration level, great anti-interference capacity, and other advantages. Thus the active wheel speed sensor becomes more and more popular.
The existing active wheel speed sensor mainly comprises a sensing element such as a Hall IC, a cable electrically connected to the sensing element via a H-terminal, a holder for receiving these components and an insulating housing for encapsulating the holder. The sensor is typically manufactured by the following processes.
Firstly, the wires of the cable are connected to one end of the H-terminal by means of crimping. Then, the cable and the H-terminal that are connected together are
subjected to molding to form a terminal holder for receiving the cable and the H-terminal. Subsequently, the sensing element such as a Hall IC is placed in the holder, and by means of resistance welding, the sensing element is electrically connected to the other end of the H-terminal exposed from the holder. Finally, the assembly formed by the above processes is subjected to integral overmolding in a mold to form an insulating housing comprising a flange and ribs, and thereby a wheel speed sensor is finally obtained.
It can be clearly seen from the above description that in the structural design of the existing wheel speed sensor, an intermediate element (namely an H-terminal) is necessary for electrically connecting the sensing element to the cable. Moreover, the following two connecting processes are required: firstly, crimping the H-terminal and the cable, and then electrically connecting the H-terminal and the sensing element. Obviously, the use of an additional intermediate element (namely an H-terminal) and the additional connecting process result in complex manufacturing processes, long production cycle and high cost.
In addition, during the above manufacturing process of the existing wheel speed sensor, after the H-terminal and the sensing element are electrically connected to each other, the integral overmolding is made directly to form an integral housing. This manufacturing process can produce one type of the wheel speed sensors. Different sensing elements require different molds and production lines. Thereby, the flexibility of the product design is poor, and it is impossible to meet the requirement of using a single mold for manufacturing different types or models of wheel speed sensors in batch.
SUMMARY OF THE IVENTION
In view of the above background, one object of the invention is to eliminate the disadvantages in the prior art, and to provide a wheel speed sensor with a simple structure, convenient manufacturing process and low production cost.
In order to achieve the above object, the present invention provides a wheel speed sensor comprising a sensing element, a cable, a holder for receiving the sensing
element and the cable and an insulating housing for encapsulating the holder, the sensing element being electrically connected to a wire at one end of the cable by a lead, and the other end of the cable being connected to an electrical control unit during use, wherein the lead and the wire are electrically connected to each other by resistance welding, the wire being superposed (or laminated) on the lead, the insulating housing is a two-piece housing comprising a first housing and a second housing, and wherein the first housing is used to house the sensing element, the cable and the holder so as to form a sensor core, and the second housing is formed outside of the sensor core.
According to one aspect of the present invention, a wheel speed sensor is provided, which comprises a sensing element, a cable, a holder for receiving the sensing element and the cable and an insulating housing for encapsulating the holder, the sensing element being electrically connected to a wire at one end of the cable by a lead, and the other end of the cable being connected to an electrical control unit during use, wherein the lead is directly electrically connected to the wire, the insulating housing is a two-piece housing comprising a first housing and a second housing, and wherein the first housing is used to house the sensing element, the cable and the holder so as to form a sensor core, and the second housing is formed outside of the sensor core.
According to another aspect of the present invention, a wheel speed sensor is provided, which comprises a sensing element, a cable, a holder for receiving the sensing element and the cable and an insulating housing for encapsulating the holder, the sensing element being electrically connected to a wire at one end of the cable by a lead, and the other end of the cable being connected to an electrical control unit during use, wherein the lead and the wire are directly electrically connected to each other by resistance welding, the insulating housing is a two-piece housing comprising a first housing and a second housing, and wherein the first housing is used to house the sensing element, the cable and the holder so as to form a sensor core, and the second housing is formed outside of the sensor core.
According to the invention, since the wire of the cable is directly electrically
connected to the lead of the sensing element by means of for example resistance welding, the electrical connection is completed via a single step, the H-terminal in the prior art is omitted and the crimping process is not required, thereby it can reduce the amount of the elements and greatly simplify the manufacturing process and reduce the production cost.
Moreover, according to the invention, the insulating housing comprises a first housing that is used to house the sensing element, the cable and the holder to form a sensor core, and a second housing that is formed outside of the sensor core. In this way, the holder, in which the sensing element and the cable is received, is molded as an independent intermediate product, i.e., the sensor core, and the sensor core can be used as a universal or common core for use in the production of different wheel speed sensors. For example, under the condition that the sensor core is unchanged, second housings with flanges and ribs of different shapes can be manufactured by means of different molds, so as to be adapted to different application circumstances and mounting requirements. Or, under the condition that the same mold is used (the positions and shapes of the flange and the ribs are unchanged), different types or models of wheel speed sensors can be obtained by employing different sensor cores or changing the relative positional relation between the sensor core and the flange and the ribs. Therefore, the wheel speed sensor according to the present invention has excellent applicability and flexibility.
Advantageously, the wire of the cable is composed of a plurality of thin wires, and the wire is pre-compacted over a predetermined length prior to resistance welding to form a shape adapted to resistance welding and having a predetermined cross section, such as a rectangle. The pre-compacting process can be made by applying a certain current on the wire under a pressurized state. In this way, smooth implementation and the quality of the resistance welding can be ensured.
Advantageously, the predetermined length is in a range of from 4 mm to 8 mm, the width of the predetermined cross section is in a range of from 0.9 mm to 1.5 mm, and the thickness of the predetermined cross section is in a range of from 0.18 mm to 0.28 mm.
It has been found that the optimum resistance-welding effect can be obtained by properly selecting the sizes of the predetermined cross section and set them within the above ranges.
Advantageously, several notches and several bumps engaged with the notches are formed between the first housing and the second housing to bring an interference fit between the first housing and the second housing.
Advantageously, the wire is superposed on the lead, such that the relative position between the wire and the lead can be conveniently determined and adjusted when performing the electrical connection (such as resistance welding), thereby making the electrical connection to be carried out conveniently and reliably and facilitating the design and arrangement of the manufacturing process and optimizing the production line.
Advantageously, according to different requirements, the first housing and the second housing may be made of the same or different material(s).
Advantageously, the second housing comprises a flange and ribs that surround the sensor core.
Advantageously, the positions of the flange and the ribs relative to the sensor core are variable.
BRIEF DESCRIPTION OF THE DRAWINGS
Hereinafter the preferred embodiments of the present invention are described with reference to the drawings so as to be helpful in understanding other features, details and advantages of the invention more clearly and completely, wherein:
Fig. 1 is a schematic perspective view of a cable used in an existing conventional active wheel speed sensor;
Fig. 2 is a schematic perspective view of an H-terminal used in the existing conventional active wheel speed sensor;
Fig. 3 is a schematic perspective view after the cable in Fig. 1 and the H-terminal in Fig. 2 are crimped together;
Fig. 4 is a schematic perspective view of a holder receiving the assembly shown in
Fig. 3;
Fig. 5 is a schematic perspective view of a sensing element used in the existing conventional active wheel speed sensor;
Fig. 6 is a schematic perspective view after the sensing element in Fig. 5 is electrically connected to the H-terminal in the holder;
Fig. 7 is a general structural schematic view of the existing conventional active wheel speed sensor;
Fig. 8 is a schematic perspective view of the relative positional relation between a cable and a sensing element prior to resistance welding used in a wheel speed sensor according to an illustrative embodiment of the present invention;
Fig. 9 is a schematic top view of a state where the assembly shown in Fig. 8 is received in a holder;
Fig. 10 is a schematic perspective view of a sensor core according to an illustrative embodiment of the present invention; and
Fig. 11 is a general structural schematic view of a wheel speed sensor according to an illustrative embodiment of the present invention.
EMBODIMENTS FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention is described in details with the aid of illustrative embodiments. Those skilled in the art will easily appreciated that the following embodiments are just some examples provided for illustrative purpose only, and do not mean any limit to the present invention.
Before describing the wheel speed sensor according to the present invention, the manufacturing process of an existing conventional active wheel speed sensor is described first with reference to Figs. 1-7.
As shown in Fig. 1, the cable 1 used in the existing conventional active wheel speed sensor is a twisted-pair cable twisted by two core wires, and two wires 2 are exposed from one end of the cable. Each wire 2 is composed of a plurality of thin wires (not shown), and the other end of the cable 1 can be connected to an electrical control unit during use (not shown).
Moreover, as shown in Fig. 2, the existing conventional active wheel speed sensor employs an H-terminal, one end 3 of which is used to be crimped to the wire 2, and the other end 4 of which is used to be electrically connected to a sensing element (such as an integrated circuit element).
At the beginning of the manufacturing process, the cable 1 shown in Fig. 1 is connected to the one end 3 of the H-terminal by crimping to form an assembly as shown in Fig. 3.
Then, the assembly shown in Fig. 3 is molded to form a holder 5 for receiving and covering the assembly, as shown in Fig. 4, wherein the other end 4 of the H-terminal is exposed so as to facilitate the subsequent electrical connection to a lead 7 of a sensing element 6 (an integrated circuit element) as shown in Fig. 5.
Subsequently, the sensing element 6 shown in Fig. 5 is positioned in the holder 5, and the lead 7 of the sensing element 6 is electrically connected to the other end 4 of the H-terminal by means of resistance welding, so as to form an assembled state as shown in Fig. 6.
Finally, an integral overmolding step is made to the assembly shown in Fig. 6 with the aid of a mold to form an integral insulating housing comprising a flange 8 and ribs 9, and the existing conventional active wheel speed sensor as shown in Fig. 7 is obtained finally.
As mentioned above, an additional intermediate element (namely an H-terminal) is required when the sensing element and the cable are electrically connected in the above existing wheel speed sensor, and an additional connecting process is required, thereby resulting complex manufacturing processes, long production cycle and high production cost. Moreover, with the increase in the amount of the components and intermediate steps, the risk of reducing the reliability of the wheel speed sensor is increased.
In addition, during the manufacturing process of the above existing wheel speed sensor, the integral overmolding step is carried out directly after the H-terminal is electrically connected to the sensing element, this process may cause some disadvantages such as the products produced are single in type and the flexibility of
the product design is poor.
The above disadvantages in the prior art can be overcome completely by the wheel speed sensor according to the present invention. Hereinafter, the structure and the manufacturing process of a wheel speed sensor according to an illustrative embodiment of the present invention will be described with reference to Figs. 8-11.
It should be noted that the following description for the manufacturing process of the wheel speed sensor according to the present invention is only directed to the parts different from the prior art, and the parts same with the prior art will not be repeated. In addition, hereinafter only such contents that are directly related to the present invention are described, and as to other contents, they belong to the existing technologies or those skilled in the art can make a suitable choice based on the existing technologies, and will not influence the understanding to the invention. Thereby, for the sake of conciseness, the detailed description for those contents is omitted.
According to the illustrative embodiment of the present invention, under a state of the relative positional relation shown in Fig. 8, a cable 11 and a sensing element 13 (an integrated circuit element) are received in a holder 14, and wires 12 of the cable 11 are directly electrically connected to leads of the sensing element 13 by means of resistance welding, as shown in Fig. 9. Through holes 15 are provided in the holder 14 at the positions corresponding to the electrically connecting positions of the wires 12 and the leads of the sensing element 13, so as to facilitate the resistance welding.
As can be seen from Fig. 8, according to the illustrative embodiment, at the time of or after performing the resistance welding, the wires 12 are superposed on the leads of the sensing element 13, such that at the time of performing the welding, the relative position between the wires and the leads can be conveniently determined and adjusted, thereby making the resistance welding to be carried out conveniently and reliably and facilitating the design and arrangement of the manufacturing process and optimizing the production line.
According to a preferred embodiment of the present invention, each wire 12 (composed of a plurality of thin wires) shown in Fig. 8 is pre-compacted over a
predetermined length prior to resistance welding to form a shape adapted to the resistance welding and having a predetermined cross section, and the shape is preferably a rectangle or square. The pre-compacting process can be made by applying a certain current on the wire under a pressurized state. In this way, smooth implementation and the quality of the resistance welding can be ensured, and the reliability can be improved.
Preferably, the predetermined length is in a range of from 4 mm to 8 mm, the width of the predetermined cross section is in a range of from 0.9 mm to 1.5 mm, and the thickness of the predetermined cross section is in a range of from 0.18 mm to 0.28 mm.
It has been found that the optimum resistance-welding effect can be obtained by selecting the above preferred ranges in size. Of course, in accordance with the specific applications and practical experiences, the above sizes can be changed, and appropriate specific sizes can be selected freely within the above ranges so as to be adapted to different actual demands.
The description for the manufacturing process according to the present invention is continued hereinafter. After the above resistance- welding step, as shown in Fig. 10, a first molding step is carried out in a mold for the holder 14 receiving the sensing element 13 and the cable 11 shown in Fig. 9, to form a first housing 16 outside of the holder 14 and thus form a sensor core shown in Fig. 10. Several or a plurality of notches 160 are formed on the first housing 16.
Subsequently, a second molding step is carried out in another mold for the sensor core shown in Fig. 10, so as to form outside of the sensor core a second housing comprising a flange 17 and ribs 18, and thereby obtaining the wheel speed sensor as shown in Fig. 11 finally. In the second molding step, corresponding to the notches 160 on the first housing 16, several or a plurality of bumps (not shown) engaging with the notches 160 are formed on the second housing to bring an interference fit between the first housing 16 and the second housing.
It can be appreciated that in other embodiments the bumps may be arranged on the first housing 16 and the notches 160 may be arranged on the second housing.
According to the present invention, the first housing and the second housing may be made of the same or different material(s), so as to be adapted to different working environments and application requirements. Usually, the material may be resin material, such as nylon resin and so on.
From the above description, it can be seen that in the present invention, the electrical connection between the cable and the sensing element can be made via a single step, thereby the manufacturing process is greatly simplified. In particular, the omission of the H-terminal reduces the amount of the components, thereby the product design is simplified. In addition, the omission of the connecting process of the H-terminal simplifies the manufacturing process, thereby the production cost is reduced and the production efficiency is improved.
In addition, it can be seen from the above manufacturing process that in the illustrative embodiment according to the present invention, the holder receiving the sensing element and the cable is formed as an independent intermediate product, i.e., the sensor core, after the first molding step. The sensor core can be used as a universal or common core for use in the production of different wheel speed sensors during the subsequent working procedure. For example, after the step of forming the sensor core, under the condition that the sensor core is unchanged, second housings with flanges and ribs of different shapes can be manufactured by using different molds so as to form a series of products having different types and sizes (for example, the shapes and the positions of the flange and the ribs can be changed, the flange can be rotated by any angle relative to the sensor core, and the center distance between the flange and the core can be changed). Or, under the condition that the same mold is used (for example, the flange and the ribs adopt standardized geometries, and the positions and the shapes of the flange and ribs are unchanged), different types of wheel speed sensors can be obtained by employing different sensor cores (for example, the length and diameter of the core can be changed) or changing the relative positional relation between the sensor core and the flange and ribs. Therefore, the wheel speed sensor according to the present invention has very excellent applicability and flexibility. In other words, since the sensor core according to the present invention can be used in
different products as a universal core, and the positions and shapes of the flange and the ribs during overmolding can be flexibly changed, the wheel speed sensor according to the present invention can meet market requirements especially for low volumes and high variety (also called as "Variant Design"), thereby greatly reducing the types of tool-inserts, tool-costs and test-costs, shorten the lead time and reduce total cost of the product.
The foregoing is a detailed description of the present invention in conjunction with the detailed embodiments. Obviously, the foregoing description and the embodiments shown in the drawings shall be understood for illustrative purposes only, rather than the limit to the present invention. It will be apparent to those skilled in the art that various changes or modifications can be made without departing from the spirit of the present invention. For example, although the foregoing describes that the wires of the cable are preferably pre-compacted prior to resistance welding, this step also can be omitted during the actual application according to the actual demand. That is, the resistance welding is carried out without any preliminary treatment, but under this condition, the welding reliability may be influenced to a certain degree. Another example, although the illustrative embodiment of the present invention includes a step of forming an independent sensor core, this step also is optional during the practice. In other words, this step can be omitted according to actual demands. Obviously, all these changes or modifications fall within the scope of the present invention.
Claims
1. A wheel speed sensor comprising a sensing element, a cable, a holder for receiving the sensing element and the cable and an insulating housing for encapsulating the holder, the sensing element being electrically connected to a wire at one end of the cable by a lead, and the other end of the cable being connected to an electrical control unit during use, wherein the lead and the wire are electrically connected to each other by resistance welding, the wire being superposed on the lead, the insulating housing is a two-piece housing comprising a first housing and a second housing, and wherein the first housing is used to house the sensing element, the cable and the holder to form a sensor core, and the second housing is formed outside of the sensor core.
2. The wheel speed sensor in accordance with claim 1, wherein the wire is composed of a plurality of thin wires, and the wire is pre-compacted over a predetermined length prior to resistance welding to form a shape having a predetermined cross section.
3. The wheel speed sensor in accordance with claim 2, wherein the predetermined cross section is formed as a rectangle.
4. The wheel speed sensor in accordance with claim 2, wherein the predetermined length is in a range of from 4 mm to 8 mm, and the predetermined cross section has a width in a range of from 0.9 mm to 1.5 mm and a thickness in a range of from 0.18 mm to 0.28 mm.
5. The wheel speed sensor in accordance with claim 1, wherein several notches and several bumps engaged with the notches are formed between the first housing and the second housing to bring an interference fit between the first housing and the second housing.
6. The wheel speed sensor in accordance with claim 1, wherein the second housing comprises a flange and ribs surrounding the sensor core.
7. The wheel speed sensor in accordance with claim 6, wherein the positions of the flange and the ribs relative to the sensor core are variable.
8. A wheel speed sensor comprising a sensing element, a cable, a holder for receiving the sensing element and the cable and an insulating housing for encapsulating the holder, the sensing element being electrically connected to a wire at one end of the cable by a lead, and the other end of the cable being connected to an electrical control unit during use, wherein the lead is directly electrically connected to the wire, the insulating housing is a two-piece housing comprising a first housing and a second housing, and wherein the first housing is used to house the sensing element, the cable and the holder to form a sensor core, and the second housing is formed outside of the sensor core.
9. The wheel speed sensor in accordance with claim 8, wherein the wire is superposed on the lead.
10. A wheel speed sensor comprising a sensing element, a cable, a holder for receiving the sensing element and the cable and an insulating housing for encapsulating the holder, the sensing element being electrically connected to a wire at one end of the cable by a lead, and the other end of the cable being connected to an electrical control unit during use, wherein the lead and the wire are directly electrically connected to each other by resistance welding, the insulating housing is a two-piece housing comprising a first housing and a second housing, and wherein the first housing is used to house the sensing element, the cable and the holder to form a sensor core, and the second housing is formed outside of the sensor core.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120145833 CN202075298U (en) | 2011-05-04 | 2011-05-04 | Wheel speed sensor |
| CN201120145833.9 | 2011-05-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012149909A1 true WO2012149909A1 (en) | 2012-11-08 |
Family
ID=45113395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2012/075086 Ceased WO2012149909A1 (en) | 2011-05-04 | 2012-05-04 | Wheel speed sensor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202075298U (en) |
| WO (1) | WO2012149909A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015212684A (en) * | 2014-02-19 | 2015-11-26 | センサータ テクノロジーズ インコーポレーテッド | Velocity sensor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202075298U (en) * | 2011-05-04 | 2011-12-14 | 博世汽车部件(苏州)有限公司 | Wheel speed sensor |
| CN104749393B (en) * | 2013-12-31 | 2019-08-20 | 森萨塔科技麻省公司 | A Hall sensor device and its manufacturing method |
| DE102014223356A1 (en) * | 2014-11-17 | 2016-05-19 | Robert Bosch Gmbh | Arrangement with a sensor and with an electrical cable |
| CN108828257A (en) * | 2018-09-07 | 2018-11-16 | 株洲联诚集团控股股份有限公司 | A kind of motor-car velocity sensor |
| CN115494256B (en) * | 2022-09-29 | 2026-03-03 | 欧摩威汽车电子(连云港)有限公司 | Wheel speed sensor and method of manufacturing the same |
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| US20050115317A1 (en) * | 2002-03-27 | 2005-06-02 | Siemens Vdo Automotive | Method of producing a wheel speed sensor and the corresponding sensor |
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| CN202075298U (en) * | 2011-05-04 | 2011-12-14 | 博世汽车部件(苏州)有限公司 | Wheel speed sensor |
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- 2011-05-04 CN CN 201120145833 patent/CN202075298U/en not_active Expired - Lifetime
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2012
- 2012-05-04 WO PCT/CN2012/075086 patent/WO2012149909A1/en not_active Ceased
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| US6253614B1 (en) * | 1998-07-15 | 2001-07-03 | Ssi Technologies, Inc. | Speed sensor having a UV-cured glue seal and a method of applying the same |
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| US20050115317A1 (en) * | 2002-03-27 | 2005-06-02 | Siemens Vdo Automotive | Method of producing a wheel speed sensor and the corresponding sensor |
| CN1930481A (en) * | 2004-03-06 | 2007-03-14 | 罗伯特·博世有限公司 | Movement sensor and method for producing a movement sensor |
| CN202075298U (en) * | 2011-05-04 | 2011-12-14 | 博世汽车部件(苏州)有限公司 | Wheel speed sensor |
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| JP2015212684A (en) * | 2014-02-19 | 2015-11-26 | センサータ テクノロジーズ インコーポレーテッド | Velocity sensor |
| CN105116163A (en) * | 2014-02-19 | 2015-12-02 | 森萨塔科技公司 | Speed sensor |
| EP2919017A3 (en) * | 2014-02-19 | 2016-02-17 | Sensata Technologies, Inc. | Speed sensor |
| US9664705B2 (en) | 2014-02-19 | 2017-05-30 | Sensata Technologies, Inc. | Speed sensor |
| CN105116163B (en) * | 2014-02-19 | 2019-05-07 | 森萨塔科技公司 | speed sensor |
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