JP7257635B2 - Output connector structure of hall IC for torque sensor - Google Patents

Description

The present invention relates to an output connector structure of a Hall IC for a torque sensor, and in particular, the Hall IC is protected from the temperature and pressure of the resin by inserting the Hall IC provided on the bent terminal body into the insulating sleeve and molding it with resin. The object of the present invention is to prevent the occurrence of cracks and the like.

As a conventional torque sensor of this type, for example, the configuration disclosed in FIG. 5A of Patent Document 1 can be cited as shown in FIG.
That is, in FIG. 7, the torque sensor is mainly configured by integrally molding the coil 10, the substrate 53, and the connector 54 outside the torsion bar 120 with resin to form the resin mold portion 51, thereby forming the sensor assembly SA. Was.

JP WO2005/097577A1 2005.10.20

Conventionally used torque sensors of this type have the following problems because they are configured as described above.
That is, the torque sensor is molded by soldering the Hall IC to a printed circuit board for holding the Hall IC having two or three pins in a resin holder, and directly molding the Hall IC with resin, or after primary molding. , the method of secondary molding is common.
However, there is a concern that the temperature and injection pressure of the injection-molded resin at the time of molding affect the main body of the Hall IC.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In particular, by inserting a Hall IC provided on a bent terminal body into an insulating sleeve and molding it with resin, the Hall IC can be It is an object of the present invention to provide an output connector structure for a Hall IC for a torque sensor, which protects against pressure and prevents cracks from occurring.

An output connector structure for a torque sensor Hall IC according to the present invention comprises: a resin holder insert-molded in a portion of a ring-shaped metal case so as to include the portion, and having a connector connecting portion; a bent terminal body having a plurality of bent terminals; a Hall IC connected to a base of the bent terminal body; and an insulating sleeve into which the base and the Hall IC are inserted, wherein the insulating sleeve and The Hall IC is positioned in the resin holder, the Hall IC is directed toward the inner side of the ring-shaped metal case, and the bent terminals are made of copper plates having a plurality of types of shapes. and the part of the ring-shaped metal case is provided with a metal case piece that is integrated with the resin holder during the insert molding, and the metal case piece is the ring-shaped metal case. The Hall IC provided on the base portion of the bent terminal body is connected to the base portion by soldering or welding or via a substrate. The insulating sleeve is a cylindrical body with a bottom or a cylindrical body, and the first, second, third and fourth bending terminals forming the bending terminal body are provided. Among the terminals, the second and third bent terminals are positioned between the first and fourth bent terminals, and the first, second, third and fourth pins at the tips of the bent terminals are connected to the connector. The first and fourth bending terminals have the same length, and the second and third bending terminals have the same length. , the lengths of the first and fourth bent terminals are shorter than the lengths of the pins, and the lengths of the pins are the same.

Since the torque sensor Hall IC output connector structure according to the present invention is configured as described above, the following effects can be obtained.
That is, a resin holder having a connector connecting portion which is insert-molded in a portion of a ring-shaped metal case with a resin so as to include the portion, and a bending terminal provided in the resin holder and having a plurality of bending terminals. a body, a Hall IC connected to the base of the bent terminal body, and an insulating sleeve into which the base and the Hall IC are inserted, wherein the insulating sleeve and the Hall IC are positioned in the resin holder. Since the Hall IC faces the inner side of the ring-shaped metal case, it is possible to perform molding without transmitting the temperature and pressure of the molding resin directly to the Hall IC by means of the insulating sleeve. In addition, this molding can prevent cracks from occurring in the resin holder, and a connector-integrated structure can be realized.
In addition, since each of the bent terminals is composed of copper plates having a plurality of types of shapes, a series of processes can be performed by pressing, and a significant cost reduction can be achieved.
Further, since the ring-shaped metal case is provided with a metal case piece that is integrated with the resin holder at the time of the insert molding, the ring-shaped metal case and the resin holder having the connector connecting portion are separated from each other. Integral molding can be reliably performed.
Moreover, since the metal case piece is bent in a direction orthogonal to the axial direction of the ring-shaped metal case, the strength of the resin holder after molding can be improved.
In addition, since the Hall IC provided on the base portion of the bending terminal body is configured to be provided to the base portion via soldering, welding, or a substrate, the Hall IC cannot be fixed to the bending terminal body. can be certain.
In addition, since the insulating sleeve is composed of a cylinder with a bottom or a cylindrical body, the entire Hall IC is covered with the insulating sleeve, so that the temperature and pressure of the molded resin are not directly transmitted to the Hall IC. can do.
Further, of the first, second, third and fourth bending terminals forming the bending terminal body, the second and third bending terminals are positioned between the first and fourth bending terminals, The first, second, third, and fourth pins at the tip of each bent terminal are positioned within the internal space of the connector connecting portion. can be provided in a square shape.
Further, among the respective bending terminals, the lengths of the first and fourth bending terminals are the same, the lengths of the second and third bending terminals are shorter than the lengths of the first and fourth bending terminals, and Four bent terminals, each of which has the same length, are used to arrange four pins at four corners of a square on a plane, forming a 4-pin type connector connection. Obtainable.

FIG. 4 is a plan view showing a flat terminal body immediately after pressing and before bending in the output connector structure of the torque sensor Hall IC according to the embodiment of the present invention; 2 is a perspective view showing a state in which each terminal of the terminal body shown in FIG. 1 is bent by a pressing machine to form a bent terminal body, and then first and second Hall ICs are attached and inserted into an insulating sleeve; FIG. FIG. 3 is a perspective view showing a connector using the bent terminal body of FIG. 2C after insert molding; FIG. 4 is a plan view of FIG. 3; FIG. 5 is a cross-sectional view taken along line AA of FIG. 4; 5 is an exploded perspective view showing a state in which only the resin holder of the output connector structure shown in FIGS. 3 and 4 is tentatively separated from the ring-shaped metal case; FIG. FIG. 10 is a cross-sectional view of a conventional torque sensor;

The torque sensor Hall IC output connector structure according to the present invention protects the Hall IC from the temperature and pressure of the resin and prevents cracks by inserting the Hall IC provided on the bent terminal body into the insulating sleeve and molding the resin. It is to obtain the prevention of the occurrence of

Preferred embodiments of the output connector structure of a torque sensor Hall IC according to the present invention will now be described with reference to the drawings.
Identical or equivalent portions to those of the conventional example are denoted by the same reference numerals.
FIG. 1 shows a terminal body 60 immediately after being pressed from a copper hoop material with a pressing machine (not shown) used for processing the output connector structure of a torque sensor Hall IC according to the present invention, and before bending. there is

The terminal body 60 is separated into mutually independent first, second, third and fourth terminals 61, 62, 63 and 64, and the terminal body 60 is made of copper. First, second, third and fourth pins 60a, 60b, 60c and 60d are formed at the tips of the terminals 61, 62, 63 and 64, respectively.
In the state of FIG. 2A, the terminals 61, 62, 63, 64 of the terminal body 60 of FIG. A bent terminal body 60A having fourth bent terminals 61A, 62A, 63A and 64A is formed.
After pressing, the terminals 61 to 64 are insulated from each other and processed to be integrated in a post-process.

Each of the bent terminals 61A, 62A, 63A, and 64A is bent backward at a first bent portion 70 as viewed in FIG. It is bent upward along the vertical direction M by two bent portions 71 .
The lengths L1 and L2 from the first bent portion 70 to the second bent portion 71 of the bent terminals 61A, 62A, 63A and 64A are the same for the first and fourth bent terminals 61A and 64A, and The three-fold terminals 62A and 63A are identical.
In addition, the length L1 of the first and fourth bent terminals 61A and 64A is longer than the length L2 of the second and third bent terminals 62A and 63A. , 60b, 60c, and 60d, when the bent terminal body 60A is viewed in plan, if the tops of the pins 60a, 60b, 60c, and 60d are temporarily tied with a thread, they form a quadrangle, and each corner of the quadrangle has Each pin 60a-60d is configured to be positioned.

In the state shown in FIG. 2B, a pair of Hall ICs 81 and 82 are attached to the bases 80 of the bent terminals 61A, 62A, 63A and 64A shown in FIG. It is attached by welding or a substrate (not shown), and the outputs of the Hall ICs 81 and 82 are configured to be output to the outside via the pins 60a, 60b, 60c and 60d.

Next, as shown in FIG. 2C, the base portion 80 to which the Hall ICs 81 and 82 are attached is moved into a cylindrical body with a bottom made of resin or the like or an insulating sleeve 83 made of a cylindrical body. By inserting it into 84, the assembly of the bent terminal body 60A itself is completed.

Next, the assembled bent terminal body 60A shown in FIG. 2C is placed in a mold cavity of an injection molding machine (not shown) in which a ring-shaped metal case 100 (described later) is installed, and a core (not shown) is inserted. After injection molding is performed, the mold is opened, and as shown in FIGS. A resin holder 51 having a cylindrical connector connecting portion 54 is insert-molded.

In the case described above, the part 51a of the resin holder 51 enters into the recess 103 between the metal case pieces 101 and 102 and is integrally formed, and the metal case pieces 101 and 102 are connected to the ring-shaped metal case 100. It is bent in a direction orthogonal to the axial direction P.
FIG. 4 shows a plan view of FIG. 3, in which the four pins 60a, 60b, 60c, and 60d are insert-molded in the connector connecting portion 54 at the corners of the square. You can see the state.

FIG. 5 shows a cross-sectional view along AA in FIG. 4, in which the pins 60a, 60b, 60c, and 60d are arranged in an exposed state in the internal space 110 of the connector connection portion 54, and the pins 60a, 60b, 60c, and 60d A portion 100 a of the ring-shaped metal case 100 is insert-molded in the resin holder 51 .

The base portion 80 housed in the insulating sleeve 83 and the pair of Hall ICs 81 and 82 provided on the base portion 80 are also insert-molded in the resin holder 51 .
In this case, each of the Hall ICs 81 and 82 faces the inner side of the ring-shaped metal case 100 and detects the torsion state of the torsion bar 120 coaxially penetrating the inner side 100b of the ring-shaped metal case 100. Electrical conversion can be used to detect the limits of the torque being applied to the torsion bar 120 .
As a reference, FIG. 6 shows a state in which the resin holder 51 and the ring-shaped metal case 100 are separated after insert molding.

The output connector structure of the Hall IC for torque sensor according to the present invention is a state in which a plurality of bent terminals having a plurality of pins and a Hall IC are grouped together with an insulating sleeve, and a part of the ring-shaped metal case is provided with:
Since the torque sensor can be integrally molded as a resin holder having a connector connecting portion, the torque sensor can be easily manufactured.

51 resin holder 51a part 54 connector connecting part 60 terminal body 60a first pin 60b second pin 60c third pin 60d fourth pin 61 first terminal 62 second terminal 63 third terminal 64 fourth terminal 60A bent terminal body 61A First bent terminal 62A Second bent terminal 63A Third bent terminal 64A Fourth bent terminal 70 First bent portion 71 Second bent portion 80 Base 81, 82 Hall IC
83 insulating sleeve 84 storage space 100 annular metal case 100a part 100b inside 101 metal case piece 102 metal case piece 103 recess 110 internal space 120 torsion bar

Claims (8)

A resin holder (51) having a connector connecting part (54), which is insert-molded with a resin to a part (100a) of a ring-shaped metal case (100) so as to include the part (100a), and the resin holder A bent terminal body (60A) provided inside (51) and having a plurality of bent terminals (61A to 64A), and Hall ICs (81, 82) connected to a base (80) of the bent terminal body (60A). and an insulating sleeve (83) into which the base (80) and the Hall ICs (81, 82) are inserted,
The insulating sleeve (83) and the Hall ICs (81, 82) are located in the resin holder (51), and the Hall ICs (81, 82) face the inner side of the ring-shaped metal case (100). An output connector structure of a hall IC for a torque sensor. 2. The torque sensor Hall IC output connector structure according to claim 1, wherein each of said bending terminals (61A, 62A, 63A, 64A) is composed of a plurality of types of shaped copper plates. 2. A configuration in which metal case pieces (101, 102) that are integrated with the resin holder (51) during the insert molding are provided on the part (100a) of the ring-shaped metal case (100). 3. The torque sensor Hall IC output connector structure according to 2 above. 4. The output of the torque sensor Hall IC according to claim 3, wherein said metal case pieces (101, 102) are bent in a direction perpendicular to the axial direction (P) of said ring-shaped metal case (100). connector structure. The Hall ICs (81, 82) provided on the base portion (80) of the bent terminal body (60A) are provided to the base portion (80) by soldering or welding or via a substrate. 5. The output connector structure of a torque sensor Hall IC according to any one of claims 1 to 4. 6. The torque sensor Hall IC output connector structure according to any one of claims 1 to 5, wherein said insulating sleeve (83) is formed of a cylinder with a bottom or a cylinder. Between the first and fourth bending terminals (61A, 64A) of the first, second, third, and fourth bending terminals (61A, 62A, 63A, 64A) forming the bending terminal body (60A) , the second and third bending terminals (62A, 63A) are positioned, and the first, second, third and fourth pins (60a, 60a, 60b, 60c, 60d) are positioned within the inner space (110) of the connector connecting portion (54), the output of the torque sensor Hall IC according to any one of claims 1 to 6. connector structure. Of the respective bending terminals (61A, 62A, 63A, 64A), the first and fourth bending terminals (61A, 64A) have the same length, and the second and third bending terminals (62A, 63A) have the same length. The pin length is shorter than the length of the first and fourth bent terminals (61A, 64A), and the pins (60a-60d) have the same length. Output connector structure of Hall IC for torque sensor described.

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