JP2010195128A - Management device of component, and manufacturing method of component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To previously avoid mistakes of erroneously retaining different components in retaining the parts of different shapes in a holder. <P>SOLUTION: A first cylinder retaining recessed part 25a of a first holder Ha of first and second holders Ha, Hb separately storing a first breather joint Ja having a short first cylinder part 21a and a first positioning protrusion 24a with a larger outside diameter and a second breather joint Jb having a long second cylinder part 21b and a second positioning protrusion 24b with a smaller outside diameter has such a depth that the first cylinder part 21a is fitted and that the second cylinder part 21b is not fitted, and a second flange retaining recessed part 26b of the second holder Hb has such a shape that the second positioning protrusion 24b is fitted and that the first positioning protrusion 24a is not fitted. Even if the second breather joint Jb is attempted to be retained on the first holder Ha, the second cylinder part 21b is caught not to be retained. On the other hand, even if the first breather joint Ja is attempted to be retained on the second holder Hb, the first positioning protrusion 24a is caught not to be retained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a first part in which a first flange portion extends in a radial direction from one end of a cylindrical first tube portion, and an end of a second cylindrical portion that is longer than the first cylindrical portion. A component comprising a first holder and a second holder for separating and storing a second component projecting in a radial direction from a second flange portion having a smaller outer diameter than at least a part of the first flange portion. The present invention relates to a management apparatus and a part manufacturing method for manufacturing the first and second parts with a mold.

  The upper space of the tank body of the fuel tank and the vicinity of the filler tube filler port are connected by a small-diameter breather tube.When fueling, the fuel level in the tank body reaches the full tank level and the lower end opening of the breather tube is opened. When the tank is closed, the upper space of the tank body is substantially sealed, and the fuel is raised in the filler tube to operate the auto-stop device of the fuel gun.

Japanese Patent Laid-Open No. 7-119556

  By the way, the breather tube is connected to a breather joint fixed to the tank body of the fuel tank. The length of the breather joint that protrudes into the tank body is determined by the laws and regulations of each country. There are two types: type and short type. Since fuel tanks having different specifications are flowed randomly in the assembly line of the factory, it is necessary to select and install one of two types of breather joints having different cylinder lengths for each fuel tank. At that time, in order to prevent the mistake of assembling the breather joints of different lengths, the two types of breather joints are held in the holder in a predetermined order corresponding to the order of the fuel tanks to be flown in advance. It prevents the assembly from occurring.

  However, when holding the two types of breather joints in a predetermined order in the holder, erroneous assembly may occur if different types of breather joints are mistakenly held.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to avoid a mistake that erroneously holds different parts when holding different parts in a holder.

  In order to achieve the above object, according to the first aspect of the present invention, a first part in which a first flange portion projects radially from one end of a cylindrical first tube portion, and the first tube A second part projecting in a radial direction from a first end of a second cylindrical part having a longer cylindrical shape than the first flange part. A component management apparatus comprising a first holder and a second holder for separate storage, wherein the first holder includes a first cylinder holding recess into which the first cylinder is fitted, and the first cylinder A first flange portion holding recess that is connected to an upper end of the holding recess and into which the first flange portion is fitted; and the second holder is a second cylinder portion holding recess in which the second tube portion is fitted. The second flank that is connected to the upper end of the second cylindrical portion holding recess and fits with the second flange portion A first holding portion having a depth at which the first cylindrical portion is completely fitted and the second cylindrical portion is incompletely fitted, and the second flange is provided. The part holding recess has a shape in which the second flange portion is completely fitted and the first flange portion is incompletely fitted, and a component management device is proposed.

  According to the invention described in claim 2, in addition to the structure of claim 1, the first and second parts are breather joints for connecting a breather tube to a tank body of a fuel tank. The first and second flange portions include first and second positioning protrusions that indicate the mounting angles of the first and second parts with respect to the mounting holes of the tank body, respectively, and the second positioning protrusion is the first positioning protrusion. The management apparatus characterized by making the said 2nd flange part smaller than the said 1st flange part by making it smaller than the process protrusion is proposed.

  According to the invention described in claim 3, the first mold in which both the first and second parts described in claim 2 are divided by a plane passing through the axes of the first and second cylindrical portions. A method of manufacturing a part molded using a mold comprising a half body and a second mold half body, wherein when the first part is molded, a first insert is inserted into the mold. A method of manufacturing a part is proposed, wherein the first cylindrical part of the first part is molded.

  According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, the second positioning protrusion of the second part is a shape obtained by removing a part of the first positioning protrusion of the first part. And at least one of the first and second mold halves has a cavity part for molding the first positioning projection, and when the second part is molded, a second nesting is provided in the cavity part. A method of manufacturing a part is proposed, wherein the second positioning projection is formed by inserting

  The first breather joint Ja of the embodiment corresponds to the first part of the present invention, and the second breather joint Jb of the embodiment corresponds to the second part of the present invention.

  According to the configuration of the first aspect, the first part in which the first flange portion having a large outer diameter projects from the one end of the short first tube portion in the radial direction and the second component having a small outer diameter from the one end of the long second tube portion. Of the first holder and the second holder for separating and storing the second part that the flange portion projects in the radial direction, the first tube portion is completely fitted into the first tube portion holding recess of the first holder. And the second flange portion holding recess of the second holder is completely fitted into the second flange portion so that the first flange portion is incompletely fitted. When the second holder is mistakenly held by the first holder, the long second cylindrical portion of the second part is caught by the first holder and cannot be held. When trying to hold one part, the large first flange of the first part is caught. Holding becomes impossible, whereby the first, the second component first, it is possible to correctly held in the second holder.

  According to the second aspect of the present invention, the first and second parts are breather joints for connecting the breather tube to the tank body of the fuel tank, and the first and second flange portions of these breather joints are the first. Since each of the second positioning protrusions is provided, the breather joint can be fixed to the tank body in the correct phase with the first and second positioning protrusions as a guide. In addition, by making the second positioning projection smaller than the first positioning projection, the second flange portion becomes smaller than the first flange portion, so that the first and second parts are correctly held in the first and second holders. Can be made.

  According to the configuration of claim 3, if the mold is used as it is, the second part having the long second cylindrical portion can be formed, and if the first insert is inserted into the mold, the first cylindrical portion is short. Since one part can be molded, it is possible to use a common mold for the first and second parts, and the mold cost can be reduced.

  According to the fourth aspect of the present invention, since the second positioning projection of the second part has a shape obtained by removing a part of the first positioning projection of the first part, the first and second mold halves are attached to each other. If it is used as it is, the first positioning projection of the first part can be formed, and if the second insert is inserted into one of the first and second mold halves, the second positioning projection of the second part is formed. Molding can be performed, thereby making it possible to use a common mold for the first and second parts and reducing the mold cost.

The perspective view of the fuel tank for vehicles. FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. 1 (a front view of the first breather joint). FIG. 3 is a view in the direction of arrows 3 in FIG. 2 (plan view of the first breather joint). The figure which shows the shape of a 2nd breather joint. The longitudinal cross-sectional view of the 1st holder holding the 1st breather joint. The longitudinal cross-sectional view of the 2nd holder holding the 2nd breather joint. The figure which shows the 1st, 2nd holder in which the incorrect breather joint was inserted. The longitudinal cross-sectional view of the metal mold | die which shape | molds a 1st, 2nd breather joint. 9A-9A and 9B-9B line sectional views of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, a fuel tank T mounted on a lower surface of a floor panel at the rear of a vehicle body of an automobile includes a tank body 11 formed by blow molding a resin, and the tank body 11 has a recess formed on its lower surface. The communication part 11a, and the first tank chamber 11b and the two tank chambers 11c connected to both sides of the communication part 11a in the vehicle width direction.

  The upper wall of the first tank chamber 11b is provided with a cap 12 that closes the insertion opening of the chamber that houses the pump module. The upper wall of the second tank chamber 11c has an insertion opening of the chamber that houses the suction filter. A closing cap 13 is provided. A breather joint Ja (Jb) made of resin is fixed to the upper wall of the communication portion 11a, and a breather tube 14 is connected thereto. The breather joints Ja and Jb have different lengths according to the laws and regulations of the country where the vehicle is used.

  As shown in FIGS. 2 and 3, the first breather joint Ja includes a first cylindrical portion 21 a having a cylindrical shape with a constant diameter, a first generally circular first flange portion 22 a provided on the first cylindrical portion 21 a, A first joint portion 23a extending in a direction perpendicular to the first tube portion 21a from the flange portion 22a. The first cylinder portion 21a is inserted into an attachment hole 11d formed in the tank body 11, and the lower surface of the first flange portion 22a is fixed to the upper surface of the tank body 11 by means such as vibration welding.

  As shown in FIG. 4, the second breather joint Jb has a shape similar to that of the first breather joint Ja, but differs in shape in two respects. The first is that the length Lb of the second cylindrical portion 21b of the second breather joint Jb is longer than the length La of the first cylindrical portion 21a of the first breather joint Ja.

  Second, the first positioning protrusion 24a formed on the first flange portion 22a of the first breather joint Ja has a trapezoidal shape, whereas it is formed on the second flange portion 22b of the second breather joint Jb. The second positioning projections 24b have a triangular shape smaller than the first positioning projections 24a. That is, the first flange portion 22a is formed such that the outer diameter of the first positioning projection 24a is larger than the outer diameter of the second positioning projection 24b of the second flange portion 22b.

  The shape of the second joint portion 23b of the second breather joint Jb is the same as the shape of the first joint portion 23a of the first breather joint Ja. Further, the first positioning protrusion 24a and the second positioning protrusion 24b are marks 11e provided on the tank body 11 (FIG. 3) when the first and second breather joints Ja and Jb are fixed to the mounting holes 11d of the tank body 11. ) Is oriented to position the first and second breather joints Ja and Jb in the rotational direction.

  As shown in FIG. 5, the first holder Ha that holds the first breather joint Ja to be assembled to the fuel tank T in the assembly line of the factory is a substantially quadrangular prism-shaped member, and the first holder Ha is directed downward from the upper surface thereof. The cylinder holding recess 25a extends, and a shallow circular first flange holding recess 26a is formed at the open end. A trapezoidal first cutout 27a is formed in a part of the first flange holding recess 26a.

  The depth of the first cylindrical portion holding recess 25a is equal to the length La of the first cylindrical portion 21a of the first breather joint Ja, and the shape of the first notch 27a is the first positioning protrusion of the first breather joint Ja. It corresponds to the shape of 24a.

  As shown in FIG. 6, the second holder Hb for holding the second breather joint Jb to be assembled to the fuel tank T in the assembly line of the factory is a substantially quadrangular prism-shaped member, and the second holder Hb extends downward from the upper surface thereof. The cylinder holding recess 25b extends, and a shallow circular second flange holding recess 26b is formed at the open end. A triangular second cutout 27b is formed in a part of the second flange holding recess 26b.

  The depth of the second cylindrical portion holding recess 25b is equal to the length Lb of the second cylindrical portion 21b of the second breather joint Jb, and the shape of the second notch 27b is the second positioning protrusion of the second breather joint Jb. It matches the shape at 24b.

  Next, the operation of the embodiment of the present invention having the above configuration will be described.

  Since fuel tanks having different specifications are randomly flowed in the assembly line of the factory, the first and second holders are preliminarily arranged in the assembly stations of the first and second breather joints Ja and Jb according to the order of the fuel tanks to be flown. By arranging Ha and Hb and holding the first and second breather joints Ja and Jb in the first and second holders Ha and Hb, respectively, assembly errors can be avoided. At this time, if the second breather joint Jb is held by the first holder Ha, or if the first breather joint Ja is held by the second holder Hb, the assembly mistake of the first and second breather joints Ja and Jb will occur. Therefore, this is prevented as follows.

  That is, as shown in FIG. 5, when the first breather joint Ja is held by the first holder Ha, the first cylinder portion 21a of the first breather joint Ja is fitted into the first cylinder portion holding recess 25a of the first holder Ha. And the trapezoidal first positioning projection 24a of the first breather joint Ja is fitted into the trapezoidal first notch 27a of the first flange holding recess 26a of the first holder Ha, so that the first The first breather joint Ja is correctly held by the holder Ha.

  As shown in FIG. 6, when the second breather joint Jb is held in the second holder Hb, the second cylindrical portion 21b of the second breather joint Jb is fitted into the second cylindrical portion holding recess 25b of the second holder Hb. And the second holder 24b is formed by fitting the triangular second positioning protrusion 24b of the second breather joint Jb into the triangular second notch 27b of the second flange holding recess 26b of the second holder Hb. The second breather joint Jb is correctly held by Hb.

  However, as shown in FIG. 7A, when the second breather joint Jb is erroneously held in the first holder Ha, the length Lb of the second cylindrical portion 21b of the second breather joint Jb is set to be the first holder Ha. Since the second breather joint Jb is not completely stored in the first holder Ha and the second flange portion 22b is lifted up, the operator can be sure that the combination is correct. Can be recognized.

  Conversely, as shown in FIG. 7B, when the first breather joint Ja is erroneously held in the second holder Hb, the short first tube portion 21a of the first breather joint Ja is deep in the second holder Hb. It fits completely into the second cylinder holding recess 25b. However, since the trapezoidal first positioning projection 24a of the first breather joint Ja cannot be fitted into the triangular second notch 27b of the second holder Hb which is smaller than that, the first breather joint Ja has the second shape. The first flange portion 22a is lifted up without being completely stored in the holder Hb, so that the operator can reliably recognize a combination error.

  As described above, the difference between the lengths of the first and second cylinder portions 21a and 21b of the first and second breather joints Ja and Jb and the difference between the sizes of the first and second flange portions 22a and 22b (that is, The shape of the first and second holders Ha and Hb is determined in consideration of the difference in size between the first and second positioning protrusions 24a and 24b), so that it corresponds to the first and second holders Ha and Hb. It is possible to reliably prevent mistakes held by the first and second breather joints Ja and Jb.

  Next, based on FIG. 8 and FIG. 9, the structure of the metal mold D for injection-molding the first and second breather joints Ja and Jb with synthetic resin will be described.

  The mold D includes a first mold half 31 and a second mold half that are divided into two planes including the axes of the first and second cylinder portions 21a and 21b of the first and second breather joints Ja and Jb. The first and second mold halves 31 and 32 are shared by the first and second breather joints Ja and Jb having different shapes.

  That is, as shown in FIG. 8A, when forming the second breather joint Jb having a long second cylindrical portion 21b, the first and second mold halves 31, 32 are used as they are. To do. On the other hand, as shown in FIG. 8B, when the first breather joint Ja having a short first tube portion 21a is formed, the first tube portion in the cavities of the first and second mold halves 31 and 32 is used. The first breather joint Ja having the short first tube portion 21a is replaced with the second breather having the long second tube portion 21b by inserting the columnar first nest 33 in the portion corresponding to the lower portion of 21a. It becomes possible to mold with the same mold D as the joint Jb, which can contribute to reduction of mold cost.

  As shown in FIG. 9B, the first positioning projection 24a of the first breather joint Ja includes a triangular notch 31a formed in the cavity of the first mold half 31 and a second mold half. A rectangular notch 32 a formed in the cavity of the body 32 is formed. The second positioning projection 24b of the second breather joint Jb is different in shape from the first positioning projection 24a of the first breather joint Ja, but as shown in FIG. 9A, the square of the second mold half 32 is formed. By using a common die D for the first and second breather joints Ja and Jb by inserting a triangular second insert 34 into the cutout 32a and changing it to a triangular cutout 32a '. The first and second positioning protrusions 24a and 24b having different shapes can be molded, and the mold cost can be further reduced.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, the first and second parts of the present invention are not limited to the first and second breather joints Ja and Jb of the embodiment, and may be other arbitrary parts.

11 Tank body 11d Mounting hole 14 Breather tube 21a 1st cylinder part 21b 2nd cylinder part 22a 1st flange part 22b 2nd flange part 24a 1st positioning protrusion 24b 2nd positioning protrusion 25a 1st cylinder part holding recessed part 25b 1st 2 cylinder part holding recessed part 26a 1st flange part holding | maintenance recessed part 26b 2nd flange part holding | maintenance recessed part 31 1st metal mold | die half body 32 2nd metal mold | die half body 33 1st nesting 34 2nd nesting D Mold Ja 1st breather joint ( First part)
Jb 2nd breather joint (2nd part)
Ha 1st holder Hb 2nd holder T Fuel tank

Claims (4)

From the one end of the first tube portion that forms a cylinder, the first flange portion projects in the radial direction from the one end, and from the one end of the second tube portion that forms a tube shape longer than the first tube portion, A component management device comprising a first holder and a second holder for separating and storing a second component in which at least a part of the second flange portion having a smaller outer diameter than the flange portion projects in the radial direction. And
The first holder includes a first tube portion holding recess into which the first tube portion is fitted, and a first flange portion that is connected to the upper end of the first tube portion holding recess and into which the first flange portion is fitted. A holding recess, and the second holder is connected to a second cylinder holding recess into which the second cylinder is fitted, and an upper end of the second cylinder holding recess, and the second flange is fitted into the second holder. A second flange portion holding recess that fits, and the first tube portion holding recess has a depth at which the first tube portion is completely fitted and the second tube portion is incompletely fitted. The second flange portion holding recess has a shape in which the second flange portion is completely fitted and the first flange portion is incompletely fitted. The first and second parts are breather joints for connecting a breather tube to a tank body of a fuel tank,
The first and second flange portions include first and second positioning protrusions that respectively indicate the mounting angles of the first and second parts with respect to the mounting holes of the tank body, and the second positioning protrusions are the first and second positioning protrusions. The component management apparatus according to claim 1, wherein the second flange portion is made smaller than the first flange portion by making it smaller than one positioning protrusion. A mold composed of a first mold half and a second mold half in which both the first and second parts according to claim 2 are divided by a plane passing through the axes of the first and second cylindrical portions. A method of manufacturing a part molded using
When molding the first part, a method for producing a part, wherein a first insert is inserted into the mold to mold a first tube portion of the first part. The second positioning protrusion of the second part has a shape obtained by removing a part of the first positioning protrusion of the first part,
At least one of the first and second mold halves has a cavity part for molding the first positioning protrusion, and when molding the second part, a second nest is inserted into the cavity part. The method for manufacturing a component according to claim 3, wherein the second positioning protrusion is formed.

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