JPH09257511A - Multidimensional mounting structure and manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain an installation error between both elements in the stage of manufacture, and detect a multishaft directional component by setting of an accurate angle by fixing a mold in a condition where plural detecting elements are turned in the respectively different directions. SOLUTION: Inclined parts 2b and 2c which are parallel to each other and have an angle of 45 degrees to an installing surface 2a, are arranged in upper and lower positions of front and rear surfaces of a mold body 2 to shape a mounting structure, and a lead frame 3 is turned downward from the inclined part 2b, and a lead frame 4 is projected in the vertical direction to the lead frame 3 from the inclined part 2c. In this way, since the lead frames 3 and 4 are constituted so as to become a right angle from the beginning, magnetism detecting elements 5 and 6 fixed on them can be mutually vertically set, and magnetic fluxes in the vertical two directions can be respectively and accurately detected in the X direction by the detecting element 5 and in the Y direction by the detecting element 6. It can also be applied to an element such as an optical element without being limited to magnetism.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a multidimensional mounting structure,
More specifically, the present invention relates to a magnetic sensor used as a rotation angle sensor for detecting a rotation angle of an automobile throttle or the like and a manufacturing method thereof.

[0002]

2. Description of the Related Art A conventional multidimensional mounting structure technology is disclosed in, for example, Japanese Patent Laid-Open No. 15252/1990. This conventional technique is a mounting technique in which the magnetic sensitive body is vertically embedded in the mold with respect to the mounting surface and the lead frame is pulled out in parallel to the mounting surface. by this,
It is possible to capture the magnetic flux parallel to the mounting surface exactly in parallel with the mounting surface. For this reason, in a normal mold structure, since it is easy to embed the magnetic sensitive body in parallel to the mounting surface in the mold, if both are mounted side by side, magnetic flux perpendicular to the mounting surface can be sensed. You can know the magnitude and direction of the magnetic flux. A rotation angle sensor is obtained by attaching a magnet to the center of the rotation axis and adding a mechanism for changing the direction of the magnetic flux depending on the rotation angle.

[0003]

However, in such a conventional technique, two kinds of elements, vertical and parallel, are required to capture the magnetic flux in two directions. Further, the angles of the two elements must be carefully adjusted. Even if it was decided and installed, there was a problem that it was necessary to allow for errors.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a multi-dimensional mounting structure and a manufacturing method capable of suppressing a mounting error between both elements at a manufacturing stage. To do.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a plurality of detection elements are fixed in a mold with the respective detection elements facing different directions.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
The sectional view from the side of the mounting structure 1 of the embodiment is shown.
In FIG. 1, the lower surface of the mold body 2 that forms the mounting structure 1 is a mounting surface 2a, and the inclined portions 2b that are parallel to each other at the upper and lower positions of the front and rear surfaces of the mold body 2 and that have an angle of 45 ° with the mounting surface 2a. , 2c are provided. The lead frame 3 projects downward from the inclined portion 2b. Inclined part 2
From c, the lead frame 4 projects in the vertical direction of the lead frame 3. The lead frame 4 includes a vertical portion 4a that is bent from the middle and extends downward. Each of the lead frames 3 and 4 has a magnetic detection element 5,
6 are connected.

FIG. 2 shows a front view of the mounting structure 1 of the first embodiment. The lead frames 3 and 4 are arranged alternately.

Next, the operation will be described. Since the lead frame 3 and the lead frame 4 are set at right angles from the beginning as shown in FIG. 1, the magnetic detection elements 5 and 6 fixed on them can be set perpendicular to each other. Therefore, the magnetic detection element 5 can detect the magnetic flux in the X direction of FIG. 1 and the magnetic detection element 6 in the Y direction of FIG. It should be noted that the present invention is not limited to magnetism, and can be applied to elements such as optical elements.

(Second Embodiment) FIG. 3 shows a second embodiment of the present invention.
The top view of the original flat frame 7 for manufacturing the lead frames 3 and 4 of the mounting structure 1 of the embodiment of FIG. In FIG. 3, base portions 8 and 9 are provided at the roots of the lead frames 3 and 4, respectively, and the bridging portion 7 of the frame 7 is provided.
It is connected to a by thin bent portions 8a and 9a, respectively. A lead frame 3 to which a magnetic detection element 5 is fixed,
A group of other electrically connected lead frames 3 is fixed to a common base 8. The lead frame 4 to which the magnetic detection element 6 is fixed and a group of other lead frames 4 electrically connected are fixed to a common base 9. The lead frames 3 and 4 are arranged alternately.

FIG. 4 is a side view of the flat frame 7 shown in FIG. 3 after being bent. In order not to bend the lead frames 3 and 4, bending stress is applied between the bases 8 and 9 of the lead frames 3 and 4 and the frame 7, so that the lead frames 3 and 4 are bent perpendicular to each other. Part 8
It is bent at a and 9a.

FIG. 5 is an explanatory view showing a state where the frame 7 is molded. The mold for forming the mold body 2 is divided into an upper mold and a lower mold. The mold 10 has a mountain shape of 45 ° so that the lead frames 3 and 4 are perpendicular to each other, and a recess is formed at the top to form the mold body 2. The mounting surface 2a of the molded body 2 is set to be perpendicular to the lead frame 3. The surfaces of the mold for forming the inclined portions 2b and 2c are divided into upper and lower molds and the mold body 2
Is set vertically to the base surface of the mold 10 in order to pull it out vertically. The same applies to the mold 11, and the surface of the mold for forming the inclined portions 2b and 2c is set to be perpendicular to the base surface of the mold 11 in order to pull out the mold body 2 vertically.

Next, the operation will be described. Since bending stress is applied between the bases 8 and 9 and the frame 7, the lead frames 3 and 4 are not affected by bending. After the frame 7 that has been subjected to the bending process is sandwiched between the molds 10 and 11, a molding material is inserted to mold the molded body 2. Since the lead frames 3 and 4 are sandwiched by the vertical surfaces set by the molds 10 and 11, they do not move even when a molding material is put therein, and can form mutually vertical surfaces. Further, the mounting surface 2a is also the mold 10
Can be set accurately. Molded body 2 is mold 1
You can easily pull it out vertically from 0 and 11. After that, the lead frames 3 and 4 are separated from the base portions 8 and 9, and the lead frame 4 is bent from the inside to form a vertical portion 4a directed downward.

(Third Embodiment) FIG. 6 shows a frame 12 for carrying out three-dimensional magnetic detection according to a third embodiment of the present invention. In FIG. 6, the lead frames 13, 1
4 and lead frame 15 for detecting the Y direction
Is provided on the original frame 12. In the third embodiment, substantially the same manufacturing steps as those in the second embodiment are taken, and the lead frames 13, 14 and 15 are bent at right angles to each other and then molded to form a three-dimensional structure.

[0015]

As described above, according to the present invention, a plurality of detecting elements are molded in advance while being fixed at their respective set angles, so that it is possible to detect directional components of multiple axes with accurate angle settings.

[Brief description of drawings]

FIG. 1 is a side sectional view of a mounting structure 1 according to a first embodiment of the present invention.

FIG. 2 is a front view of the mounting structure 1 according to the first embodiment of this invention.

FIG. 3 is a plan view of a lead frame according to a second embodiment of the present invention.

FIG. 4 is a side view of the lead frame according to the second embodiment of the present invention after bending.

FIG. 5 is a side view showing a state where a molding process according to a second embodiment of the present invention is performed.

FIG. 6 is a plan view of a lead frame according to a third embodiment of the present invention.

[Explanation of symbols]

 1 Mounting structure 2 Molded body 2a Mounting surface 2b, 2c Inclined part 3,4,13,14,15 Lead frame 4a Vertical part 5,6 Magnetic detection element 7,12 Frame 7a Bridging part 8,9 Base part 8a, 9a Bending part 10,11 mold

Claims (4)

[Claims] 1. A multi-dimensional mounting structure, wherein a plurality of detection elements are fixed to a mold, with the respective detection elements facing different directions. 2. The method for manufacturing a multi-dimensional mounting structure according to claim 1, wherein the plurality of detection elements are fixed by molding with the respective detection elements facing different directions. 3. A plurality of lead frames to which the detecting elements are fixed are formed on an integral frame, and the lead frames are bent in different directions and then fixed by molding. 2. The method for manufacturing a multidimensional mounting structure according to 2. 4. A base portion connected to a lead frame to which a detecting element is fixed, and a bending portion connecting the base portion and the frame are provided in the frame, and bending processing in different directions is performed at the bending portion. The method for manufacturing a multidimensional mounting structure according to claim 2 or 3.