KR20170064384A - A speed sensor assembly for a car and manufacturing method thereof - Google Patents

A speed sensor assembly for a car and manufacturing method thereof Download PDF

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Publication number
KR20170064384A
KR20170064384A KR1020150170145A KR20150170145A KR20170064384A KR 20170064384 A KR20170064384 A KR 20170064384A KR 1020150170145 A KR1020150170145 A KR 1020150170145A KR 20150170145 A KR20150170145 A KR 20150170145A KR 20170064384 A KR20170064384 A KR 20170064384A
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KR
South Korea
Prior art keywords
terminal
lead terminal
relay terminal
lead
speed sensor
Prior art date
Application number
KR1020150170145A
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Korean (ko)
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KR101754499B1 (en
Inventor
황진태
Original Assignee
주식회사 현대케피코
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Priority to KR1020150170145A priority Critical patent/KR101754499B1/en
Publication of KR20170064384A publication Critical patent/KR20170064384A/en
Application granted granted Critical
Publication of KR101754499B1 publication Critical patent/KR101754499B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/38—Inputs being a function of speed of gearing elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/302—Temperature sensors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The present invention relates to a vehicle speed sensor assembly, and more particularly, to a speed sensor assembly for a vehicle, which comprises a sensor portion for detecting a speed of an input shaft or an output shaft of a transmission, a lead terminal extending from the sensor portion, And a relay terminal electrically connected to an end portion of the lead terminal by means of the relay terminal. Thus, it is possible to easily check whether there is a welding defect between the two terminal components through the energization inspection.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a speed sensor assembly for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a speed sensor assembly for a vehicle, and more particularly, to a speed sensor assembly for a vehicle mounted on a transmission and detecting a rotation speed of an input shaft or an output shaft.

Generally, a speed sensor of a vehicle transmission measures an engine rotation speed, which is an input value of a transmission, and transmits an electrical signal to a TCU. The TCU controls the speed change stage based on the sensor signal received from the speed sensor.

As shown in FIGS. 1 and 2, a speed sensor assembly 100 mounted on a transmission includes a transmission case fixedly coupled to a transmission case and rotatably supporting a target gear (or a target wheel) rotating integrally with an input shaft or an output shaft .

A pair of speed sensor assemblies 100 are provided at both ends of the casing 210. The cable unit 220 is connected to the casing 210 via the connector 230 and the connector 230 is connected to the TCU . Each speed sensor assembly 100 includes a speed sensor, a lead terminal, and a relay terminal. An external terminal is provided inside the casing 210, and a cable is provided inside the cable unit 220.

The signal detected from the speed sensor is transmitted to the TCU side in the order of the lead terminal, the relay terminal, the external terminal, the cable, and the connector 230, and the external power is supplied to the speed sensor in the reverse order. Since the detection signal is transmitted and the power is supplied through connection of these various parts, a structure for connection between the parts in assembling each part is important.

Here, the relay terminal and the lead terminal of the speed sensor assembly 100 are welded in a state where the two parts are in contact with each other. In this case, it is difficult to check whether or not the welding is bad. That is, since the relay terminal and the lead terminal are in contact with each other before the welding, even if the power is tested before and after welding, the current remains in the energized state.

In the rotation detection sensor disclosed in Japanese Patent Laid-Open Publication No. JP2008-209198A (prior art document), the welding structure between the lead terminal and the relay terminal of the sensor IC is as shown in Figs. 3 and 4 of the prior art, It can be seen that at least one of the contact protrusions is provided so as to hold the contacts of the contact protrusions. Thus, conventionally, the two terminals are always in contact with each other regardless of welding.

The present invention provides a vehicle speed sensor assembly capable of easily checking whether there is a welding defect between two terminal parts through an energization test, .

In order to achieve the above object, a vehicle speed sensor assembly according to the present invention includes a sensor portion for detecting a speed of an input shaft and an output shaft of a transmission, a lead terminal extending from the sensor portion, And a relay terminal electrically connected to an end of the lead terminal by a welding portion and electrically connected to the external terminal.

In the speed sensor assembly for a vehicle according to an embodiment of the present invention, the first vertical portion, the horizontal portion and the second vertical portion are bent in a 'C' shape to form an end portion, But may be provided spaced apart at a predetermined interval.

In the vehicle speed sensor assembly according to an embodiment of the present invention, the first vertical portion and the second vertical portion may be embedded in a terminal holder, and the horizontal portion may be exposed to the outside of the terminal holder.

In the vehicle speed sensor assembly according to the embodiment of the present invention, the sensor unit is a Hall IC, and a magnet for generating a magnetic force for the operation of the Hall IC may be provided.

According to another aspect of the present invention, there is provided a method of manufacturing a speed sensor assembly for a vehicle, the method comprising the steps of: coupling the relay terminal and the lead terminal to the terminal holder so as to be spaced apart from each other, And welding the relay terminal and the lead terminal, which are coupled to each other at a distance from each other.

In the method of manufacturing a speed sensor assembly for a vehicle according to an embodiment of the present invention, the relay terminal may be inserted into the terminal holder to perform injection molding.

In the method of manufacturing a speed sensor assembly for a vehicle according to an embodiment of the present invention, in the coupling step, the sensor portion and the lead terminal may be detachably coupled in a state where the relay terminal is coupled to the terminal holder.

In the method of manufacturing a speed sensor assembly for a vehicle according to an embodiment of the present invention, it may further include determining whether a weld failure is detected by checking whether the relay terminal welded in the welding step and the lead terminal are electrically connected.

In the vehicle speed sensor assembly according to the embodiment of the present invention, it is possible to determine that the welding failure is caused when the relay terminal and the lead terminal are not energized.

As described above, according to the vehicle speed sensor assembly of the present invention, when the lead terminal and the relay terminal of the transmission speed sensor are welded with a certain clearance between the two parts at the time of welding, And it is possible to reduce manufacturing time and cost.

1 is a side view showing a state in which a conventional vehicle speed sensor assembly is mounted,
2 is a perspective view showing the automotive speed sensor assembly shown in Fig. 1,
3 is an exploded perspective view of a vehicle speed sensor assembly according to an embodiment of the present invention,
Fig. 4 is a side view of Fig. 3,
Fig. 5 is a perspective view showing the speed sensor and the terminal holder shown in Fig. 3,
Figure 6 is a side view of Figure 5,
7 is a flowchart illustrating a method of manufacturing a vehicle speed sensor assembly according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 to 6, a vehicle speed sensor assembly according to an embodiment of the present invention includes a sensor unit 11 for detecting a speed of an input shaft or an output shaft of a transmission, A relay terminal 20 provided at a predetermined distance from the end of the lead terminal 12 and a terminal holder 40 to which the relay terminal 20 and the relay terminal 20 are fixedly connected ).

The sensor unit 11 senses the speed and direction of the target gear of the input shaft or the output shaft of the transmission with three hole probes as a Hall IC. A magnet 15 for generating a magnetic force for the operation of the Hall IC is provided adjacent to the sensor unit 11. [

The sensor unit 11 is electrically connected to the relay terminal 20 via the lead terminal 12 and the relay terminal 20 is supplied with external power through an external terminal And transmits the sensor signal detected from the sensor unit 11 to the control unit (ECU or TCU).

The lead terminal 12 extends from the sensor portion 11 and is adjacent to the relay terminal 20 at an end thereof. The relay terminal 20 is electrically connected to the end of the lead terminal 12 by a weld 30.

The end portion of the relay terminal 20 is bent in a 'C' shape with the first vertical portion 21, the horizontal portion 22 and the second vertical portion 23. The first vertical portion 21 and the second vertical portion 23 are embedded in the terminal holder 40. The horizontal portion 22 is exposed to the outside of the terminal holder 40 and is spaced apart from the lead terminal 12 in parallel at a predetermined interval.

The terminal holder 40 fixes the sensor unit 11 and the lead terminal 12 and the relay terminal 20 so that the horizontal part 22 of the relay terminal 20 and the lead terminal 12 are fixed to predetermined And is fixedly supported so as to be spaced apart from the gap d.

The relay terminal 20 is embedded and fixed in the terminal holder 40 by insert injection and the sensor unit 11 and the lead terminal 12 are detachably coupled to the terminal holder 40.

The terminal holder 40 includes a sensor engagement groove 41 for receiving the sensor unit 11 and includes a plurality of engagement protrusions 42 and fixing protrusions 43 for fixing and supporting the lead terminals 12 Respectively. The lead terminal 12 is formed in the sensor portion 11 in an elbow shape and has a bent portion formed with a terminal fitting groove 13 into which the engaging projection 42 of the terminal holder 40 is inserted.

The sensor unit 11 is inserted into the sensor engagement groove 41 while the relay terminal 20 is embedded in the terminal holder 40 and the engagement protrusion 42 of the terminal holder 40 is inserted into the terminal engagement groove 41 When the sensor unit 11 and the lead terminal 12 are coupled to the terminal holder 40 so as to be seated between the fixing protrusions 43 of the lead terminal 12, A predetermined gap d is formed between the horizontal portion 22 of the lead terminal 12 and the end portion of the lead terminal 12. [

If the welding is performed while the horizontal part 22 and the lead terminal 12 are separated from each other, the welding part 30 is formed in the gap d between the horizontal part 22 and the lead terminal 12 And the two parts are electrically connected by the welding portion 30. [ At this time, when the welding part 30 is properly welded so that the horizontal part 22 and the lead terminal 12 are connected to each other, the two parts are energized and if the welding is not properly performed, the horizontal part 22 and the lead terminal 12 12 are not energized with each other. Accordingly, it is possible to confirm whether welding is properly performed through the energization inspection between the relay terminal and the lead terminal 12. [

Referring to FIG. 7, a method of manufacturing a speed sensor assembly for a vehicle according to an embodiment of the present invention includes a step S10 of inserting the relay terminal 20 and injection molding the terminal holder 40, (S30) of welding the relay terminal (20) and the lead terminal (12), and a step (S30) of welding the relay (20) welded in the welding step (S30) And an inspection step (S40) of judging welding defects between the terminal (20) and the lead terminal (12).

First, the sensor unit 11 and the lead terminal 12 are manufactured, and the relay terminal 20 is manufactured separately, followed by injection molding.

In the injection molding step S10, the prefabricated relay terminal 20 is inserted into an injection mold and injection-molded.

After the terminal holder 40 is injection molded in the injection molding step S10, the sensor unit 11 and the lead terminal 12 are coupled to the terminal holder 40 (S20). The sensor unit 11 is inserted into the sensor engaging groove 41 and the engaging projection 42 of the terminal holder 40 is inserted into the terminal engaging groove 13 while the engaging projection 42 of the lead terminal 12 43, respectively. When the sensor portion 11 and the lead terminal 12 are coupled to the terminal holder 40, the end portion of the lead terminal 12 and the horizontal portion 22 of the relay terminal 20 are spaced apart from each other by a predetermined gap d. .

In this embodiment, the sensor unit 11 and the lead terminal 12 are separately assembled by injection molding the terminal holder 40 by inserting only the relay terminal 20, It is also within the scope of the present invention that a part of the terminal 12 is insert-injected into the terminal holder 40 together with the relay terminal 20.

When the relay terminal 20 and the lead terminal 12 are separated from each other by a predetermined distance through the coupling step S20, the two parts are welded to each other to conduct current (S30).

In the welding step S30, the welding part 30 is formed in the gap d between the relay terminal 20 and the lead terminal 12 so that the two parts can be electrically connected to each other. In the welding step (S30), laser welding may be adopted as a welding method, and in addition, a welding method capable of welding two terminals may be adopted. When the welding process (S30) is completed, it is inspected whether the welding is properly performed (S40).

In the inspecting step S40, whether or not the relay terminal 20 and the lead terminal 12 are electrically connected is checked. If it is determined that the relay terminal 20 and the lead terminal 12 are not energized, it is determined that the welding is defective. If the two components are energized, it is determined that the welding is good.

As described above, the gap d between the relay terminal 20 and the lead terminal 12 is artificially welded, so that it is possible to easily judge whether or not the welding defect is caused by simply performing the energization inspection between the two components. The defective parts of the parts can be detected early and the defective parts can be lowered.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that the modification or the modification is possible by the person.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

11:
12: Lead terminal
13: Terminal coupling groove
15: Magnet
20: Relay terminal
21: first vertical part
22:
23: second vertical part
30:
40: Terminal holder
41: sensor coupling groove
42: engaging projection
43: Fixing projection

Claims (9)

A sensor unit for detecting a speed of an input shaft or an output shaft of the transmission;
A lead terminal extending to the sensor unit;
A relay terminal spaced apart from the end of the lead terminal by a predetermined distance and electrically connected to an end of the lead terminal by a weld; And
A terminal holder fixedly supporting the lead terminal and the relay terminal;
The speed sensor assembly comprising: The apparatus of claim 1, wherein the relay terminal comprises:
Wherein the first vertical portion, the horizontal portion, and the second vertical portion are bent in a " C " shape to form an end portion, and the horizontal portion is spaced apart from the lead terminal by a predetermined distance. 3. The method of claim 2,
Wherein the first vertical portion and the second vertical portion are embedded in the terminal holder,
Wherein the horizontal portion is exposed to the outside of the terminal holder. The method according to claim 1,
Wherein the sensor unit is a Hall IC, and comprises a magnet for generating a magnetic force for operation of the Hall IC. A method of manufacturing a speed sensor assembly for a vehicle according to claim 1,
Connecting the relay terminal and the lead terminal to the terminal holder so as to be spaced apart from each other by a predetermined distance so that the relay terminal and the lead terminal are not in contact with each other; And
Welding the relay terminal and the lead terminal to the terminal holder so as to be spaced apart from each other;
Wherein the step of assembling the speed sensor assembly comprises the steps of: 6. The method of claim 5,
Wherein the relay terminal is inserted and the terminal holder is injection molded. 7. The method according to claim 6,
Wherein the sensor portion and the lead terminal are detachably coupled to each other in a state where the relay terminal is coupled to the terminal holder. 6. The method of claim 5,
Determining whether welding failure is caused by checking whether the relay terminal and the lead terminal welded in the welding step are energized;
Further comprising the steps of: 9. The method according to claim 8,
And determining that the welding failure is caused when the relay terminal and the lead terminal are not energized.
KR1020150170145A 2015-12-01 2015-12-01 A speed sensor assembly for a car and manufacturing method thereof KR101754499B1 (en)

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KR1020150170145A KR101754499B1 (en) 2015-12-01 2015-12-01 A speed sensor assembly for a car and manufacturing method thereof

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Application Number Priority Date Filing Date Title
KR1020150170145A KR101754499B1 (en) 2015-12-01 2015-12-01 A speed sensor assembly for a car and manufacturing method thereof

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KR20170064384A true KR20170064384A (en) 2017-06-09
KR101754499B1 KR101754499B1 (en) 2017-07-05

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KR101806795B1 (en) 2017-09-21 2017-12-08 김찬회 injection molding machine with assistance press and inspection apparatus of insulation
KR102318599B1 (en) * 2020-11-27 2021-10-28 주식회사 케이엠에프 Manufacturing method for wheel bearing sensor

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JP2002257587A (en) * 2001-03-01 2002-09-11 Calsonic Kansei Corp Rotation sensor
JP5459090B2 (en) * 2010-06-14 2014-04-02 株式会社デンソー Control device for automatic transmission

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