JP3529720B2 - Case integrated connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a case integrated with a printed board, various boards such as an IC board, electronic parts, etc. mounted inside and mounted on a vehicle such as an automobile to electronically control the respective devices. It is about connectors.

[0002]

2. Description of the Related Art In a case-integrated connector according to the present invention, as shown in FIGS. 1 and 2, a connector portion 2 is integrally formed on the outside of a side wall portion 1 of a resin-molded case body G. At the same time, the inner bottom portion of the side wall portion 1 has a first partial bottom plate portion 3 for supporting the connector terminal T on its upper surface.
Is integrally formed, and a second partial bottom plate portion 5 is integrally formed at an inner bottom portion of another side wall portion 4 facing the side wall portion 1. A large number of connector terminals T are arranged in parallel at a predetermined interval, and a portion arranged outside the case body G is accommodated in the connector portion 2 in a space arrangement state and the case is formed. The portion arranged inside the main body G is supported on the upper surface of the first partial bottom plate portion 3.

On the back surface side of the case body G, a heat radiation cover 6 is fixed to the back surfaces of the first and second partial bottom plate portions 3 and 5 by adhesion, and the heat radiation cover 6 allows the case body G to be attached.
The heat generated from the printed circuit board V mounted inside is dissipated. Then, the printed circuit board V is mounted on the case body G by using an automatic machine (not shown), and the origin position of the automatic machine with respect to the case body G fixed at a predetermined position is determined. Thus, in order to mount the printed circuit board V at a regular position with respect to the case body G, an origin mark called “fiducial mark” which is optically recognizable is provided on the case body G. M is provided. In order to improve the accuracy of detecting the position of the case main body G, the origin mark M is generally provided along the diagonal direction of the rectangular case main body G and at the two most distant positions. In the example of the case body G shown in FIGS. 1 and 2, the case body G is provided at two locations on the upper surface of each of the first and second partial bottom plate portions 3 and 5 along the diagonal direction of the case body G.

As one of the conventional origin marks, the one having the structure shown in FIGS. 9 and 10 is implemented. That is,
At the time of molding the case body G, the annular concave portion 21 is molded so that the circular convex portion 22 remains in the center thereof, and the white paint 23 is formed on the bottom surface of the circular concave portion 21.
Was used as the origin mark M '. The ground color of the case body G is other than white, and in many cases,
It is black. 9 and 10, 3a, 5
a is the first or second partial bottom plate portion 3, 5 of the case body G
The plane part of the upper surface of FIG.

Then, when light is emitted from a large number of light sources arranged annularly around a point directly above the origin mark M ', the reflectance of white as the color of the annular concave portion 21 and the circular shape of the central portion thereof. There is a large difference from the reflectance of black, which is the color of the convex portion 22. Therefore, as shown in FIG. 11, in each of the annular concave portion 21 and the circular convex portion 22,
A large illuminance difference occurs, the contrast between the two 21 and 22 becomes clear, and the circular boundary line E between the two 21 and 22 appears clearly. When the circular boundary line E is optically recognized, the position of the center C thereof is detected by automatic calculation. However, the origin mark M ′ of the above structure requires the white paint 23 to be poured into the bottom surface of the annular recess 21 after the case body G is molded, and the work of pouring the white paint 23 into the narrow portion is extremely troublesome. In addition, it takes time to cure the white paint 23, which increases the manufacturing cost of the origin mark M ′.

Therefore, in order to solve the above-mentioned problems, as shown in FIGS. 12 and 13, when the case main body G is molded, the hole to be detected has a small inner diameter and is deep (for example, inner diameter × depth = 0. An attempt was made to open the 5 × 6 mm) 31 and make the detected hole 31 function as the origin mark M ″. However, the origin mark M ″ also had the following problems. (1) When the detected hole 31 is irradiated with light, the contrast based on the illuminance difference between the detected hole 31 and the surrounding flat surface portion 3a (5a) is unclear, and The detection accuracy of the detection hole 31 is low. (2) Since the inner diameter of the detected hole 31 is small and deep, the hole forming pin protruding in the mold for opening the detected hole 31 is easily deformed or broken by the pressure during molding. , The durability of the mold is low (the mold cannot be used repeatedly).

In other words, regarding the former problem, as shown in FIG. 12, a large number of light sources A composed of LEDs or the like are arranged annularly around a point directly above the hole 31 to be detected, and When the periphery of the detection hole 31 is illuminated, the hole 31
The reflected light is specularly reflected on the flat surface portion 3a (5a) in the vicinity of, but the light irradiating the inside of the detected hole 31 is repeatedly reflected several times in the hole 31, so that the reflectance of the light is reduced. Will decrease synergistically. As a result, when the illuminance of the detected hole 31 and its surroundings is measured directly above the detected hole 31, the detected hole 31 and the flat portion 3a (5) outside the detected hole 31 are measured.
In (a), a large illuminance difference occurs, and the position of the detected hole 31 is temporarily detected, but the detected hole 31 portion and the flat portion 3a (5a) on the outside thereof have the same color. Therefore, the illuminance difference between the two is small as compared with that of the origin mark M ′ in which the white paint 23 is poured. Therefore, as shown in FIG.
The boundary line between the part (1) and the flat surface part 3a (5a) outside the part is not clearly recognized. In FIG. 12, the light source A
Shows the light ray L from the light source A in only one place, but since many light sources A are annularly arranged around a point directly above the hole 31 to be detected, The light irradiation conditions along the circumferential direction of the detection hole 31 are all the same.

In the industry to which the present technology belongs, when the detected hole formed in the case body is used as the origin mark, the opening corner portion of the detected hole must be a right angle in a sectional view. It is believed that the so-called "pin angle" is indispensable in the field, and in the industry to which the present technology belongs, the hole to be detected having the above-described shape has been used for many years.

[0009]

SUMMARY OF THE INVENTION According to the present invention, in a case-integrated connector, when a mounting machine mounts a substrate on a case body, the position of the case body is detected to determine the origin position of the mounting machine. It is an object to simplify the structure of the origin mark of, and to make it possible to optically recognize with high accuracy.

[0010]

According to the invention of claim 1 for solving the above-mentioned problems, when mounting a substrate on a case body by a mounting machine, an origin position of the mounting machine with respect to the case body is determined. origin mark, a case integral connector provided in the case body, the origin mark, that it is constituted by a chamfer with a hole having a rounded chamfered chamfered surface, and its features.

According to the first aspect of the present invention, the incident angles of the light rays from a large number of light sources annularly arranged about a point directly above the origin mark are close to 90 °, and the origin mark is Light rays can be incident on the entire surface of the bottom surface of the chamfered hole that constitutes the. Then, the light rays incident on the bottom surface of the chamfered hole and the flat surface portion around the hole are
Although the specular reflection, Earl chamfered opening inner peripheral surface of the chamfer with holes
Light rays incident on the chamfered surface are almost
Diffuse reflection occurs in any direction . As a result, the part where the light rays are specularly reflected and the chamfered surface that is rounded are almost arbitrary.
A large difference in illuminance is generated between the chamfered hole and the inner peripheral surface that is continuous with the bottom surface of the chamfered hole and is perpendicular to the bottom surface. And the difference in illuminance from the outside is particularly large. Therefore, the peripheral edge of the bottom surface of the chamfered hole that constitutes the origin mark,
The contrast with the outside becomes clear, the peripheral edge of the bottom surface is clearly identified, and the origin position of the mounting machine with respect to the case body is detected.

Further, according to the invention of claim 1, since the origin mark is constituted by the chamfered hole having the chamfered surface, the chamfered hole is projected on the molding surface of the mold for molding the chamfered hole. The hole forming pin has a shape in which the outer diameter rapidly increases from the tip end toward the base end. For this reason, the strength of the hole forming pin is increased, deformation or breakage due to the forming pressure during forming is eliminated, and the forming die can be repeatedly used.

[0013] Here, as in the invention of claim 2, Earl
If the chamfered surface is configured to be convex or concave, almost any
The degree of diffuse reflection is further increased to the bottom of the chamfered hole.
The edges of the surface are more easily recognized.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to Examples. FIG. 1 is a perspective view of a case-integrated connector having an origin mark M _{1 according} to the present invention.
FIG. 3 is also a sectional view, and FIG. 3 shows the chamfered hole H ₁ in the state where a large number of light sources A are annularly arranged around a point directly above the chamfered hole H ₁ that constitutes the origin mark M _1. each portion, and the hole H ₁ of the periphery of the flat portion 3a of the (5
FIG. 5 is a schematic cross-sectional view showing a reflection state of a light ray with respect to a), FIG. 4 is a perspective view of a chamfered hole H ₁ , and FIG.
Chamfering attachment hole H _1, and a schematic diagram showing a photometric around the. The same parts as those described in the section of "Prior Art" are designated by the same reference numerals to avoid redundant description, and only the unique parts of the present invention will be described.

[0015] The chamfer with a hole H ₁ that constitute the origin mark M ₁
Is [inner diameter (D) × depth (B)] = (0.5 × 0.9 mm) as shown in FIGS. 3 to 5, and is approximately (2/3) of the depth. The chamfering radius (R) = 0.5 mm is greatly rounded up to a certain extent. That is, the inner surface of the chamfered hole H ₁ has a bottom surface 11 parallel to the flat surface portion 3a (5a) of the upper surface of the first or second partial bottom plate portion 3, 5, a round chamfered surface 12 on the opening side, and the bottom surface. It is perpendicular to 11 and is composed of three surfaces, an inner peripheral surface 13 that connects the bottom surface 11 and the round chamfered surface 12.

In the state shown in FIG. 3, since a large number of light sources A are arranged as described above, the bottom surface 11 of the chamfered hole H ₁ and the first or second partial bottom plate portion 3,
The incident angle of the light ray L with respect to the flat surface portion 3a (5a) of the upper surface of 5 is slightly smaller than 90 °. Note that, in FIG. 3 as well, the light source A is shown only at one location, and
Although is shown the light L from, the plurality of light sources A, around a single point directly above the chamfer with holes H ₁ because it is cyclic arrangement, the light along the circumferential direction of the chamfer with the hole H ₁ The irradiation conditions are all the same, which is the same as described in the item of "Prior Art".

The light ray L incident on the bottom surface 11 of the chamfered hole H ₁ and the flat surface portion 3a (5a) is specularly reflected, but the light ray L incident on the round chamfered surface 12 is the entire portion thereof. Since the reflection directions are different in
Diffuse reflection. As a result, a large illuminance difference occurs between the portion where the light ray L is specularly reflected and the portion where the light ray L is irregularly reflected. Moreover, since the inner peripheral surface 13 that is continuous with the bottom surface 11 of the chamfered hole H ₁ is perpendicular to the bottom surface 11, the illuminance difference between the peripheral edge of the bottom surface 11 and the outside thereof is particularly large. Become. Therefore, as shown in FIG. 5, the contrast between the periphery of the bottom surface 11 of the chamfered hole H ₁ and the outside thereof becomes clear, and the circular boundary line E of the periphery of the bottom surface 11 becomes clear.
Is clearly identified, and the origin position of the automatic machine with respect to the case body G is reliably detected.

Further , in the above embodiment, the bottom surface 11 is provided between the bottom surface 11 of the chamfering hole H ₁ and the round chamfered surface 12.
Although there is an inner peripheral surface 13 that is perpendicular to the inner peripheral surface, as shown in FIG. 6, the inner peripheral surface 13 is eliminated and the lower end edge of the round chamfered surface 12 and the bottom surface 11 are directly connected to each other. The origin mark M ₂ may be formed by the chamfered hole H ₂ of. With this configuration, even when the light source A is not disposed directly above the chamfered hole H ₂ , the presence of the inner peripheral surface 13 reduces the number of light rays L that are blocked from entering the bottom surface 11, and the detection of the peripheral edge of the bottom surface 11 is performed. Accuracy (Detection accuracy of chamfered hole H ₂ )
Is increased. Further, the shape of the chamfered surface provided on the inner peripheral surface of the opening of the chamfered hole that constitutes the origin mark is not limited to the above-described round chamfer, but as shown in FIG. 7, the chamfered surface becomes an inverted conical surface. Chamfered surface 14 with a linear cross section
Which may be a chamfered hole H having the chamfered surface 14.
_The origin mark M ₃ can also be constituted by ₃ . Also on the chamfered surface 14, the angle of reflection on the surface 14 differs greatly from the other surfaces and is reflected several times. Therefore, the illuminance of the bottom surface 11 becomes high, and a large illuminance difference occurs between the bottom surface 11 and the chamfered surface 14, and the circular boundary line at the peripheral edge of the bottom surface 11 is clearly identified.

In the case of a chamfered hole having a round chamfered surface, the chamfered radius must be 0.5 mm or more when the inner diameter is about 0.5 mm, preferably 0.5 mm. ~ 2 mm.

On the other hand, the hole forming pin projecting from the forming surface of the forming die for forming the chamfered hole has a shape in which the outer diameter increases rapidly from the tip end to the base end.
The strength of the hole forming pin is increased and deformation or breakage due to the molding pressure during molding is eliminated, and the mold can be used repeatedly.

Further, as shown in FIG. 8, the origin mark M ₄ can also be constituted by the chamfered hole H ₄ having the chamfered surface 15 which is chamfered in the reverse radius. in this way,
Even if the chamfered surface 15 is concavely chamfered and has a concave shape, the light ray L is diffusely reflected on the chamfered surface 15, so that the bottom surface 11 and the chamfered chamfered surface 15 that has been reverse-chamfered.
And a large illuminance difference occurs, and the circular boundary line at the peripheral edge of the bottom surface 11 is clearly recognized.

[0022]

According to the present invention, an origin mark for determining the origin position of the mounter with respect to the case body when mounting the board on the case body by the mounter is provided in the case body. the connector, the chamfered with holes having a chamfered surface in which the opening inner peripheral surface is larger radiusing, so constitutes the origin mark,
The structure of the origin mark is simplified and can be optically recognized with high accuracy.

[Brief description of drawings]

FIG. 1 is a perspective view of a case-integrated connector provided with an origin mark M _{1 according} to the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 shows each portion of the chamfered hole H _{1 and} the hole H ₁ in a state where a large number of light sources A are annularly arranged around a point directly above the chamfered hole H ₁ constituting the origin mark M ₁ .
FIG. 3 is a schematic cross-sectional view showing a reflection state of light rays on the flat surface portion 3a (5a) around ₁ ;

FIG. 4 is a perspective view of a chamfering hole H ₁ .

FIG. 5 is a schematic diagram showing an illuminance difference between a chamfered hole H ₁ and its surroundings.

FIG. 6 is a plan view 3 of each surface of the chamfering hole H ₂ and its periphery.
It is a schematic cross section which shows the reflection state of the light ray with respect to a (5a).

FIG. 7: Plane part 3 of each surface of the chamfering hole H ₃ and its periphery
It is a schematic cross section which shows the reflection state of the light ray with respect to a (5a).

FIG. 8 is a planer part 3a (5a) of each surface of a chamfering hole H ₄ provided with a chamfered surface 14 having a reverse chamfer and its periphery.
FIG. 6 is a schematic cross-sectional view showing a reflected state of light rays with respect to.

9 is a cross-sectional view of a conventional origin mark M'using white paint 23. FIG.

FIG. 10 is a perspective view of the same.

FIG. 11 is a schematic diagram showing a circular convex portion 22 forming an origin mark M ′ and an illuminance difference around the circular convex portion 22.

FIG. 12 is a diagram illustrating a state in which the light source A is arranged at a position slightly deviated from directly above the detected hole 31 forming the origin mark M ″, and the detected hole 31 and the flat surface portion 3a (around the hole 31). 5a) is a schematic cross-sectional view showing a reflected state of light rays with respect to FIG.

FIG. 13 is a perspective view of a hole to be detected 31.

FIG. 14 is a schematic diagram showing an illuminance difference between the detected hole 31 forming the origin mark M ″ and its surroundings.

[Explanation of symbols]

H ₁ to H _4: chamfer attachment hole G: case body M ₁ ~M _4: the origin mark V: printed circuit board (substrate) 11: bottom surface of the chamfer with holes 12: Earl chamfered chamfered surface 13: Of the chamfer with holes Circumferential surface 14: chamfered surface having a linear cross section 15: chamfered surface with reverse round chamfering

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Fukunishi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (56) References JP 2000-100509 (JP, A) JP 11-103166 ( JP, A) JP 2000-195598 (JP, A) JP 62-158395 (JP, A) JP 2001-124520 (JP, A) JP 64-50528 (JP, A) JP 5 -13918 (JP, A) JP-A-8-139498 (JP, A) JP-A-2-208504 (JP, A) JP-A-4-342196 (JP, A) (58) Fields investigated (Int.Cl) . ⁷ , DB name) H05K 7/14

Claims (2)

(57) [Claims] 1. An origin mark for defining an origin position of the mounting machine with respect to the case body when the board is mounted on the case body by the mounting machine is a case integrated connector provided in the case body. the origin mark, the case integral connector, characterized in that it is constituted by a chamfer with a hole having a rounded chamfered chamfered surface. 2. The chamfered chamfer is formed in a convex shape or a concave shape.
The integrated case according to claim 1, wherein the case is integrated.
connector.