JP2013088335A - Sensor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sensor device for easily securing position accuracy with respect to a mold of a metal terminal extended from a detection part.SOLUTION: A sensor device 10 is provided with a detection part 2, a plurality of metal terminals 11, 12 and 13 for transmitting a detection signal from the detection part 2, and a housing part 6 which integrally supports the detection part 2 and the metal terminals 11, 12 and 13 and is moulded by resin. In the sensor device 10, end parts 11a, 12a and 13a of the plurality of metal terminals 11, 12 and 13 comprise a connector terminal, and at least a part of the plurality of metal terminals 11, 12 and 13 seen from an axis direction of the connector terminals are placed overlapped. The metal terminals 11, 12 and 13 are provided with protrusion parts 11c and 12c for protruding in the direction different from the axis direction of the connector terminals.

Description

  The present invention relates to a sensor device such as a rotation detection device used for detecting rotation of various detected rotating bodies in, for example, an in-vehicle engine, and in particular, a sensor device in which a housing portion that holds a main body of the sensor device is resin-molded. It is about.

  Conventionally, as a sensor device used for detecting rotation of various detected rotating bodies in an in-vehicle engine or a general machine, for example, as disclosed in Japanese Patent Application Laid-Open No. 2006-308330 (Patent Document 1), it is a detected rotating body. A detection unit disposed so as to face the rotor, a housing unit that supports the detection unit, and a flange that is molded integrally with the housing unit and is used for fastening to the engine body, for example. There is.

  This sensor device is configured as shown in FIG. That is, the sensor device 1 includes, for example, three electrodes (not shown) that are electrically connected to a sensor chip built in the detection unit 2, and these electrodes are, for example, power supply terminals of the detection unit 2. Are connected to the base ends of the three metal terminals 3, 4 and 5 serving as output terminals and ground terminals by welding or the like. The three metal terminals 3, 4, 5 are extended from the detection unit 2 so as to overlap each other in the same vertical plane direction, that is, in the vertical direction in FIG. Are integrally supported by a housing portion 6 formed of mold resin or the like. And the connector part 7 which uses the front-end | tip part 3a, 4a, 5a (metal terminal part exposed from mold resin) of the metal terminals 3, 4, 5 as a connector terminal is comprised.

JP 2006-308330 A (paragraph 0004, FIG. 4)

  The sensor device 1 configured as described above may determine the shape and the orientation of the connector portion 7 according to the shape of the attachment site and the surrounding space. In that case, the method of devising the shape of the metal terminals 3, 4, 5 to an appropriate shape is adopted. For example, as shown in FIG. 10, when the orientation of the connector part 7 is perpendicular to the axis of the metal terminals 3, 4, 5 connected to the detection part 1, By making the shape bent in the vertical direction, the directions of the tip portions 3 a, 4 a, 5 a of the metal terminals 3, 4, 5 are matched with the direction of the connector portion 7.

  By the way, the tip portions 3a, 4a and 5a of the metal terminals 3, 4 and 5 are fitted with the female connector side terminals in the connector portion 7 and transmit the detection signal of the detection portion 1, so the dimensions thereof are desired. Accuracy is required. For example, in the sensor device 1 that forms an exterior such as the housing part 6 and the connector part 7 by molding resin molding, the distance from the tip of the tip part 3a, 4a, 5a to the mold resin end face that covers the tip part 3a, 4a, 5a That is, since the pin height h affects the fitting state of the connector portion 7, it is important to obtain an appropriate accuracy of the pin height h. The accuracy of the pin height h depends on the positional accuracy when the tip portions 3a, 4a, and 5a of the metal terminals 3, 4, and 5 are inserted into a molding die.

  When the sensor device 1 molds the metal terminals 3, 4, and 5 with mold resin, for example, as shown in FIG. 11, the tip portions 3 a, 4 a, and 5 a of the metal terminals 3, 4, and 5 are inserted into the mold 8. There is a need. When the metal terminals 3, 4, 5 are viewed from the direction opposite to the direction seen from the tips 3 b, 4 b, 5 b (hereinafter referred to as the pin direction) in FIG. In addition, the metal terminals 3 and 4 are disposed so as to at least partially overlap the metal terminal 5. For this reason, the metal terminals 3 and 4 are difficult to press in the pin direction when inserted into the mold 8, and the positions of the tip portions 3 a, 4 a and 5 a inserted into the mold 8, that is, the pin height h has high accuracy. It's hard to be done.

  As can be understood from FIG. 11, the pin height h is regulated by the contact surface between the tips 3b, 4b, and 5b of the tip portions 3a, 4a, and 5a and the mold 8, so that the pin height h is set to the metal terminal. It cannot be visually confirmed at the time of insertion into the mold 8 of 3, 4, and 5. In that case, coupled with the difficulty of holding the metal terminals 3 and 4, the variation of the pin height h due to insufficient insertion amount of the metal terminals 3 and 4 into the mold 8, or the deformation of the metal terminals 3 and 4 due to excessive insertion force. May lead to

  An object of this invention is to provide the sensor apparatus which can ensure easily the position accuracy with respect to the metal mold | die of the metal terminal extended from a detection part in view of the above problems.

  The sensor device according to the present invention includes a detection unit, a plurality of metal terminals that transmit detection signals from the detection unit, and a housing unit that integrally supports the detection unit and the metal terminal, and is molded of resin. A plurality of metal terminals constituting a connector terminal, wherein the plurality of metal terminals are arranged at least partially overlapping when viewed from the axial direction of the connector terminal. Are provided with projecting portions that project in a direction different from the axial direction of the connector terminal.

  In the sensor device according to the present invention, the tip end portions of a plurality of metal terminals constitute a connector terminal, and at least a part of the metal terminal is overlapped when viewed from the axial direction of the connector terminal. Then, since the protruding portion that protrudes in a direction different from the axial direction of the connector terminal is provided, the metal terminal can be inserted into the mold while holding the protruding portion. Thereby, the positional accuracy of the metal terminal with respect to the mold can be ensured.

It is sectional drawing seen from the front of the sensor apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the state before shaping | molding of the metal terminal of the sensor apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the state before shaping | molding of the metal terminal of the sensor apparatus in which a mold dividing direction differs from FIG. It is a schematic diagram explaining the condition at the time of shaping | molding of the sensor apparatus which concerns on Embodiment 1 of this invention. It is the figure which compared the protrusion force of the protrusion part of the metal terminal of the sensor apparatus which concerns on Embodiment 2 of this invention, and the force added to the insertion to a metal mold | die. It is the figure which compared the protrusion force of the protrusion part of the metal terminal of the sensor apparatus which concerns on Embodiment 3 of this invention, and the force added to the insertion to a metal mold | die. It is the figure which compared the protrusion force of the protrusion part of the metal terminal of the sensor apparatus which concerns on Embodiment 3 of this invention, and the force added to the insertion to a metal mold | die. It is a figure which shows the state before shaping | molding of the metal terminal of the sensor apparatus which concerns on Embodiment 4 of this invention. It is a figure which shows the state before shaping | molding of the metal terminal of the sensor apparatus which concerns on Embodiment 5 of this invention. It is sectional drawing which looked at the conventional sensor apparatus from the front. It is a figure which shows the state before shaping | molding of the metal terminal of the conventional sensor apparatus.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a sensor device according to the invention will be described with reference to the drawings. The invention is not limited by these embodiments, and the embodiments can be combined, or the embodiments can be appropriately changed or omitted within the scope of the invention.

Embodiment 1 FIG.
A sensor device according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1A is a cross-sectional view of the sensor device 10 according to Embodiment 1 as viewed from the front. This sensor device 10 is substantially the same as the conventional sensor device 1 described in FIG. 10, and is provided with, for example, three electrodes (not shown) that are electrically connected to a sensor chip built in the detection unit 2. These electrodes are connected to the base end portions of the three metal terminals 11, 12, 13 serving as, for example, a power supply terminal, an output terminal, and a ground terminal of the detection unit 1 by welding or the like. The three metal terminals 11, 12, and 13 are extended from the detection unit 2 so as to overlap each other in the same vertical plane direction, that is, the vertical direction in FIG. 1A, and are detected as these metal terminals 11, 12, and 13. The portion 2 is integrally supported by a housing portion 6 formed of mold resin or the like. And the connector part 7 which uses the front-end | tip part 11a, 12a, 13a (metal terminal part exposed from a mold resin) of the metal terminals 11, 12, 13 as a connector terminal is comprised. The three metal terminals 11, 12, 13 are not limited to three, and may be configured by a plurality of terminals.

  As shown in FIG. 1A, the direction of the connector portion 7 is formed perpendicular to the axis of the metal terminals 11, 12, 13 connected to the detection portion 2, and the metal terminals 11, 12, 13 are The shape is bent in the vertical direction along the way. The orientations of the tip portions 11 a, 12 a, and 13 a of the metal terminals 11, 12, and 13 are aligned with the orientation of the connector portion 7. Further, as shown in FIG. 1 (b), protrusions 11c and 12c are provided at the tip portions 11a and 12a of the metal terminals 11 and 12 in a direction different from the pin direction so as not to overlap when viewed from the pin direction. ing. FIG. 1B is a cross-sectional view of the protruding portions 11c and 12c of FIG.

  In the molding resin molding process of the sensor device 10 configured as described above, the metal terminals 11, 12, and 13 connected to the detection unit 2 are inserted into the molding die 8 as shown in FIG. And molding resin molding. When the tip portions 11a, 12a, 13a of the metal terminals 11, 12, 13 are inserted into the mold 8, the metal terminal 13 can hold the tip portion 13a, and the metal terminals 11, 12 are shown in FIG. ), The protruding portions 11c and 12c can be pressed down. Thereby, the front-end | tip parts 11a, 12a, and 13a of the metal terminals 11, 12, and 13 can be inserted in the metal mold | die 8 with a sufficient positional accuracy. Moreover, workability | operativity improves by providing several protrusion part 11c, 12c on the same plane, as shown by the code | symbol B of FIG.2 (b). 2B is a cross-sectional view of the tip portions 11a and 12a of the metal terminals 11 and 12 shown in FIG.

  Further, the effect of pressing the protruding portions 11 c and 12 c when the metal terminals 11, 12 and 13 are inserted into the mold 8 is effective regardless of the dividing direction of the mold 8. As an example, FIG. 3 shows a state before molding when the mold dividing direction of the mold 8 is perpendicular to FIG. 3A is a view seen from above, and FIG. 3B is a cross-sectional view seen from the front. The insertion direction of the metal terminals 11, 12, 13 shown in FIG. 3 into the mold 8 is perpendicular to FIG. Even in this case, the metal terminal 13 holds the tip portion 13a, and the metal terminals 11 and 12 hold the protrusions 11c and 12c, thereby leading the tip portions 11a, 12a, and 13a of the metal terminals 11, 12, and 13a. Can be inserted into the mold 8 with high positional accuracy.

  Further, when the metal terminals 11 and 12 are inserted into the mold 8, the mold 8 can be used as a means for pressing the protruding portions 11c and 12c. This will be described with reference to FIG. First, the tips 11 a and 12 a of the metal terminals 11 and 12 are inserted into the mold 8. At this time, the positional accuracy of the tip portions 11a and 12a is not limited. Thereafter, as shown in FIG. 4A, at the same time as the mold 8 is closed, the projecting portions 11c and 12c are moved by the block 14 provided on the mold 8 on the side opposite to the side where the tip portions 11a and 12a are inserted. The front ends 11 a and 12 a of the presser and metal terminals 11 and 12 are inserted into the mold 8. As shown in FIG. 4B, the block 14 is removed before the molding material is introduced into the mold 8. Thereby, the front-end | tip parts 11a and 12a of the metal terminals 11 and 12 can be inserted in the metal mold | die 8 with the position accuracy with the shape precision of the metal mold | die 8. FIG.

  In addition, the protrusion shape of the protrusion parts 11c and 12c of the metal terminals 11 and 12 can be formed by sheet metal processing. Usually, since the metal terminals 11 and 12 are formed by sheet metal processing, the protruding portions 11c and 12c can be formed on the metal terminals 11 and 12 without increasing the number of steps.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. FIG. 5 is a diagram illustrating the sensor device according to the second embodiment. In order to improve the workability when the tip portions 11a, 12a of the metal terminals 11, 12 described in the first embodiment are inserted into the mold 8, as shown in FIG. When pushing 12c, it is effective to push in the direction perpendicular to the surface of the projecting portions 11c, 12c as seen from the pin direction as indicated by symbol A, but the metal terminals 11, 12 when inserted into the mold 8 are effective. In order to suppress deformation of the tip portions 11a and 12a, it is desirable not to apply a force other than the pin direction to the tip portions 11a and 12a. For this reason, as shown to the code | symbol A of FIG.5 (b), it is desirable for the protrusion direction of protrusion part 11c, 12c to be perpendicular | vertical with respect to a pin direction, and protrusion part 11c, 12c is formed by a bending process. A symbol P shown in FIG. 5 indicates an insertion force of the tip portions 11a and 12a into the mold 8. Other configurations are the same as those in the first embodiment, and the illustration and description are omitted.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described. 6 and 7 are diagrams for explaining the sensor device according to the third embodiment. When the tip portions 11a, 12a of the metal terminals 11, 12 are inserted into the mold 8, the projection portions 11c, 12c are arranged so that the tip portions 11a, 12a are not deformed in order to suppress deformation of the tip portions 11a, 12a of the metal terminals 11, 12. It is preferable to provide it in the vicinity of the tip of the tip portions 11a and 12a so that the bending moment Q acting on the tip becomes small. As shown in FIGS. It is desirable to be on the axis 12a. 6A shows a case where the roots of the projecting portions 11c and 12c are not on the axis of the tip portions 11a and 12a, and FIG. 7A shows the root of the projecting portions 11c and 12c. FIGS. 6 (b) and 7 (b) are cross-sectional views of FIGS. 6 (a) and 7 (a) as viewed from the side, respectively. Other configurations are the same as those in the first embodiment, and the illustration and description are omitted.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described. FIG. 8 is a diagram for explaining the sensor device according to the fourth embodiment. In the first to third embodiments, the case where the protruding portions 11c and 12c are provided at the tip portions 11a and 12a among the tip portions 11a, 12a and 13a of the three metal terminals 11, 12, and 13 has been described. However, as shown in FIG. 8, the protruding portion 13 c may be provided also at the tip end portion 13 a of the metal terminal 13, and it does not overlap when viewed from the pin direction among the plurality of metal terminals connected to the detection unit 2. It can also be provided on metal terminals. In this case, when inserting a plurality of metal terminals into the mold, the locations to be pressed can be aligned on the same plane. This improves workability. The same reference numerals as those in FIG. 1 used in FIG. 8 are the same as those described in FIG. 1, and reference numeral 80 indicates a sensor device according to the fourth embodiment.

Embodiment 5 FIG.
Next, a fifth embodiment of the present invention will be described. FIG. 9 is a diagram for explaining a sensor device according to the fifth embodiment. As shown in FIG. 9, the sensor device 90 according to the fifth embodiment includes contact portions 11d, 12d, and 13d that contact the mold 8 in front of the distal ends of the respective distal end portions 11a, 12a, and 13a of the metal terminals 11, 12, and 13a. Is provided. In addition, about another structure, it is the same as that of Embodiment 4, and attaches | subjects the same code | symbol and abbreviate | omits description.

  The effect of the contact portions 11d, 12d, and 13d is that when the tip portions 11a, 12a, and 13a of the metal terminals 11, 12, and 13 are inserted into the mold 8, the contact portions 11d, 12d, and 13d A contact can be visually observed and the insertion depth of the front-end | tip parts 11a, 12a, and 13a of the metal terminals 11, 12, and 13 with respect to the metal mold | die 8 can be confirmed. Variations in the pin height h due to insufficient insertion of the tips 11a, 12a, 13a into the mold 8 and deformation of the tips 11a, 12a, 13a due to excessive insertion force are suppressed, and the tips 11a, 12a, 13a are made of gold. Positional accuracy with respect to the mold 8 can be ensured.

  As described above, the first to fifth embodiments of the present invention have been described. In these embodiments, the case where the protruding portion is provided at the tip portion of the metal terminal has been illustrated and described. However, the formation position of the protruding portion is not limited to the tip portion of the metal terminal, and the same effect can be obtained regardless of the position of the metal terminal.

DESCRIPTION OF SYMBOLS 1, 10, 80, 90 Sensor apparatus 2 Detection part 3, 4, 5 Metal terminal 3a, 4a, 5a Tip part 3b, 4b, 5b Tip 6 Housing part 7 Connector part 8 Mold 11c, 12c, 13c Protrusion part 11d, 12d, 13d Contact part 14 Block h Pin height P Insertion force Q into mold Q Bending moment

Claims (7)

A plurality of metal terminals, a plurality of metal terminals that transmit detection signals from the detection units, and a housing part that integrally supports the detection units and the metal terminals and is molded from resin. In the sensor device in which the tip of the portion constitutes a connector terminal, and the plurality of metal terminals are arranged at least partially overlapping when viewed from the axial direction of the connector terminal,
A sensor device, wherein the metal terminal is provided with a protruding portion that protrudes in a direction different from the axial direction of the connector terminal.   The sensor device according to claim 1, wherein the protrusions are formed on a plurality of the metal terminals, and the protrusions are provided on the same plane.   The sensor device according to claim 1, wherein the protruding portion has a shape extending in a direction perpendicular to an axial direction of the connector terminal.   The sensor device according to claim 1, wherein a base of the protruding portion is formed on an axis of the connector terminal.   The sensor device according to any one of claims 1 to 4, wherein the protrusion is provided on all of the plurality of metal terminals.   The sensor device according to any one of claims 1 to 5, wherein a contact portion with a mold for forming the housing portion is provided in the vicinity of a tip portion of the connector terminal.   The sensor device according to claim 3, wherein the protruding portion is bent in a direction perpendicular to the axial direction of the connector terminal.

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