JP2004218730A - Mounting device for two members - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting device for two members capable of connecting in flow passage and fastening a second member made of a metallic material and a first member made of a synthetic resin material mutually at their flat faces on which they oppose mutually and reducing manufacturing cost and weight. <P>SOLUTION: The first member is formed by the synthetic resin material, a first flow passage 1B is opened toward an upper side end face 1A, and a female screw member 2 formed by a metallic material and provided with a female screw hole 2A is fixed and arranged. The second member 20 is formed by the metallic material, and a second flow passage 20B is opened toward a lower side flat face 20A. An adapter 3 is formed by a thin plate metallic material and is provided with a cylindrical part 3B directed toward a collar part 3A. The collar part 3A is arranged on the upper side flat face 1A of the first member 1, the cylindrical part 3B is inserted and arranged into the first flow passage 1B, and the lower side flat face 20A of the second member 20 is arranged on the collar part 3A. The collar part 3A is screw-fitted in an upper end 2B of the female screw member 2 through the second member 20 by a bolt B in this condition. A first seal member 4 is pressed and arranged between the cylindrical part 3B and the first flow passage 1B, and a second seal member is pressed and arranged between the lower side flat face 20A of the second member 20 and the collar part 3A. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
[Industrial applications]
The present invention relates to a two-member mounting device for screwing a flat surface formed on a first member and a flat surface formed on a second member with a bolt, and in particular, a first member that opens on the flat surface of the first member. The present invention relates to a two-member mounting device that connects a flow path and a second flow path that opens to a flat surface of a second member.
[0002]
[Prior art]
A conventional two-member mounting device is shown in FIG.
Reference numeral 10 denotes a first member, which is one member to be connected, and is formed of a metal material such as aluminum.
The first member 10 has an upper flat surface 10A formed above the first member 10, and a first flow path 10B is formed from inside the first member 10 toward the upper flat surface 10A.
A female screw hole 10C is formed in the upper flat surface 10A on the side of the first flow path 10B. More specifically, a plurality of female screw holes 10C are formed in the flange portion 10D including the upper flat surface 10A. Is done.
Reference numeral 20 denotes a second member which is the other member to be connected, which is also formed of a metal material such as aluminum.
The second member 20 has a lower flat surface 20A formed below the second member 20, and a second flow path 20B opened from inside the second member 20 toward the lower flat surface 20A.
Further, a through hole 20C corresponding to the female screw hole 10C is formed in the lower flat surface 20A beside the second flow path 20B, and the through hole 20C has a flange portion including the lower flat surface 20A. Multiple holes are drilled in 20D.
Further, an O-ring groove 20E is formed so as to surround the second flow path 20B opening to the lower flat surface 20A, and the O-ring 21 is disposed in the O-ring groove.
And the 1st member 10 and the 2nd member 20 are connected as follows.
That is, the lower flat surface 20A of the second member 20 is disposed in contact with the upper flat surface 10A of the first member 10, and in this state, the bolt B is screwed into the female screw hole 10C via the through hole 20C. .
According to the above, the first member 10 and the second member 20 are screwed and fastened with their respective flat surfaces 10A, 20A. At this time, the first flow path 10B and the lower flat surface 20A which are opened to the upper flat surface 10A. The flow path is connected to the second flow path 20 </ b> B opening through the contact surface.
In such a fastened state, the fluid in the flow path that leaks outward from the first flow path 10B and the second flow path 20B via the contact surfaces of the upper flat surface 10A and the lower flat surface 20A is The O-ring 21 arranged in the O-ring groove 20E of the second member 20 is pressed and arranged on the upper flat surface 10A of the first member 10, so that leakage is suppressed.
[0003]
[Problems to be solved by the invention]
Here, in such a two-member mounting apparatus, it is strongly desired to reduce the manufacturing cost and the weight of the apparatus. For this purpose, first, the conventional parts must be used in common.
Second, the member is formed of a synthetic resin material in order to reduce material costs and reduce weight.
Is performed.
That is, the second member 20 is diverted and used for sharing.
And forming the first member 10 from a synthetic resin material.
Is performed.
This corresponds to forming the first member 10 of a synthetic resin material in the state of FIG.
That is, the second member 20 made of a metal material is fastened to the first member 10 made of a synthetic resin material by the bolt B. According to this, the fastening force by the bolt B decreases with time, The surface pressure between the upper flat surface 10A of the first member 10 and the lower flat surface 20A of the second member 20 decreases due to the low creep resistance of the synthetic resin material, and the seat function of the O-ring 21 decreases, A problem occurs in that the fluid in the first flow path 10B and the second flow path 20B leaks outward from the contact surface between the upper flat surface and the lower flat surface 20A.
[0004]
The two-member mounting device according to the present invention has been made in view of the above-described problem, and a flow path between a conventionally used second member made of a metal material and a first member made of a synthetic resin material is defined by respective flat surfaces. It is an object of the present invention to provide the above-mentioned device that can be connected and fastened, thereby achieving a reduction in manufacturing cost and weight.
[0005]
[Means for achieving the task]
In order to achieve the above object, the two-member mounting device according to the present invention is formed of a synthetic resin material, has a first flow path opening toward the upper flat surface, is formed of a metal material, and has a female screw hole. A first member in which the set internal thread member is fixedly arranged on the upper flat surface;
A second member formed of a metal material and having a second channel opened toward the lower flat surface;
A flat plate-shaped flange portion formed of a metal material and disposed between the upper flat surface of the first member and the lower flat surface of the second member;
An adapter formed by projecting downward from the flange portion and being inserted into the first flow passage of the first member and formed by a tubular portion;
A flange portion of the adapter is disposed between the upper flat surface of the first member and the lower flat surface of the second member, and the tubular portion is inserted and disposed in the first flow path of the first member.
The flange of the adapter is held between the upper end of the female screw member and the lower flat surface of the second member by a bolt screwed from the second member toward the female screw hole of the female screw member, and the first member of the first member is held. The flow path and the second flow path of the second member communicate with the inside of the tubular portion of the adapter, and the first seal member is pressed and arranged between the first flow path of the first member and the outer periphery of the tubular portion, The second seal member is pressed and arranged between the lower flat surface of the second member and the flange.
[0006]
[Action]
The flange of the adapter is sandwiched between the end of the female screw member fixedly arranged on the first member and the second member made of a metal material, and the bolt is screwed into the female screw hole of the female screw member via the second member and the adapter. Thereby, the second member is fastened to the first member.
The fluid in the first flow path of the first member is air-tightly held by the first seal member disposed between the tubular portion of the adapter and the first flow path. Leakage from the lower surface of the semiconductor device is suppressed.
On the other hand, the bolt is screwed into the female screw hole of the female screw member, and presses and holds the flange of the adapter made of the metal material and the second member made of the metal material at the end of the female screw member made of the metal material. It is possible to maintain a stable tightening force across the entire surface, and to press the second seal member against the upper surface of the flange portion with an appropriate pressing force, whereby leakage between the lower end surface of the second member and the upper surface of the flange portion can be achieved. Can be suppressed.
[0007]
【Example】
Hereinafter, an embodiment of a two-member mounting device according to the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing a state where two members are fastened.
FIG. 2 is a top plan view of the adapter.
FIG. 3 is a longitudinal sectional view taken along line AA of FIG. It is.
The second member is formed of a metal material and has the same configuration as the second member 20 shown in FIG. 4, and a description thereof will be omitted.
(Although the reference numeral for the second member 20 is a conventional one, the O-ring 21 can be read as the second seal member 21. The second seal member 21 is formed of an elastic material such as an O-ring or a square ring. Anything that makes a ring is acceptable)
Reference numeral 1 denotes a first member formed of a synthetic resin material, and the first flow path 1B opens toward the upper flat surface 1A. (The first flow path 1B faces the second flow path 20B of the second member 20)
Reference numeral 2 denotes a female screw member formed of a metal material having a cylindrical shape and having a female screw hole 2A penetrating therethrough. The female screw member 2 is simultaneously insert-molded when the first member 1 is injection-molded. As a result, the female screw member 2 is fixedly arranged on the first member 1.
The upper end 2B of the female screw member 2 is arranged at the same height as the upper flat surface 1A of the first member 1, or preferably projects slightly (for example, 0.5 mm) upward.
The female screw hole 2A of the female screw member 2 is arranged corresponding to the through hole 20C of the second member 20, and is also arranged along the longitudinal axis of the through hole 20C. In this example, two through holes 20C and two female screw members 2 are provided.
Note that the method of fixing the female screw member 2 to the first member 1 is not limited to the above, and means such as adhesion, heat welding, and caulking may be used.
[0008]
Next, the adapter will be described with reference to FIGS.
The adapter 3 is made of a thin metal material, and is formed by a plate-shaped flange 3A and a cylindrical portion 3B protruding downward from a substantially central portion of the flange 3A. Is provided with an annular O-ring groove 3C. In addition, 3D is two through holes formed facing the female screw hole 2A of the female screw member 2 fixedly arranged on the first member 1. The adapter 3 can be formed by drawing a thin metal material of, for example, about 0.5 mm to 0.8 mm.
[0009]
Next, the fastening of the first member 1 and the second member 2 will be described.
First, the flange 3A of the adapter 3 is arranged on the upper flat surface 1A of the first member 1, and the cylindrical portion 3B is inserted and arranged in the first flow path 1B of the first member 1.
In this state, the through-hole 3D of the flange 3A is disposed facing the female screw hole 2A of the female screw member 2, the upper end 2B of the female screw member 2 is disposed in contact with the lower surface of the flange 3A, and the O-ring of the cylindrical portion 3B is further provided. A first seal member 4 such as an O-ring is disposed in the groove 3C.
Second, the lower flat surface 20A of the second member 20 is disposed toward the upper surface of the flange 3A of the adapter 3.
In this state, the through-hole 20C of the second member 20 is arranged facing the through-hole 3D of the adapter 3, and the second flow path 20B is arranged facing the inside of the cylindrical portion 3B of the adapter 3, and the O-ring groove is formed. The second seal member 21 disposed in the inside 20 </ b> E is disposed on the upper surface of the flange 3 </ b> A of the adapter 3.
Then, the bolt B is screwed into the female screw hole 2A of the female screw member 2 through the through hole 20C of the second member 20 and the through hole 3D of the adapter 3, whereby the second member 20 can be fastened to the first member 1. The flange 3A of the adapter 3 is sandwiched between the lower flat surface 20A of the second member 20 and the upper flat surface 1A of the first member 1.
[0010]
According to the above description, the lower flat surface 20A of the second member 20 made of the metal material is provided with the flange 3A of the adapter 3 made of the metal material on the upper end 2B of the female screw member 2 made of the metal material fixed to the first member 1. And is entirely formed of a metal material without any synthetic resin material in the direction of tightening the bolt B, so that the tightening force of the bolt B is stably maintained for a long period of time. it can.
Therefore, the second seal member 21 is disposed in the O-ring groove 20E with a stable pressing force and can press and hold the upper surface of the flange portion 3A with a stable pressing force, so that the first flow path 1B and the second flow path 20B. The fluid inside does not leak outward from between the lower flat surface 20A of the second member 20 and the upper surface of the flange 3A.
A first seal member 4 is pressed between the outer peripheral portion of the cylindrical portion 3B of the adapter 3 and the inner peripheral portion of the first flow path 1B of the first member 1. The fluid in the flow path 1B and the second flow path 20B does not leak outward from between the upper flat surface 1A of the first member 1 and the lower surface of the flange 3A.
As described above, after the first member 1 and the second member 20 are fastened to each other, leakage between the channels 1B and 20B formed inside the two members 1 and 20 and the outside is completely suppressed for a long period of time. it can.
[0011]
Further, according to the present invention, as the second member 20, the second member 20 made of a conventionally used metal material can be used as it is, and the parts can be shared, so that the manufacturing cost can be reduced.
Further, according to the present invention, the first member 1 can be formed of a synthetic resin material by fixing the female screw member 2 to the first member 1 and using the adapter 3 formed of a thin metal material. According to this, the weight was significantly reduced as compared with the first member 1 using the conventional metal material.
Although the female screw member 2 and the adapter 3 are formed of a metal material, the weight increase is slight because the female screw member 2 is formed in a thin hollow shape and the adapter 3 is formed of a thin plate material. , Does not hinder the weight reduction effect.
Further, according to the first member 1 formed of a synthetic resin material, the material cost can be greatly reduced as compared with the case where the first member 1 is formed of a metal material such as aluminum. This is effective in reducing the manufacturing cost.
The first member 1 in the present embodiment is used for a fuel injection device of an internal combustion engine.
It is suitable for use in a fuel distribution pipe (delivery pipe) that supports a fuel injection valve, and the second member 20 is preferably used for a pressure control valve (pressure regulator) that regulates the fuel pressure flowing in the fuel distribution pipe. is there.
[0012]
【The invention's effect】
As described above, according to the two-member mounting device of the present invention, the second flow path formed of a synthetic resin material and opening toward the upper flat surface and the female screw member having the female screw hole are directed toward the upper flat surface. A first member fixedly disposed by a metal plate, a flat plate-shaped flange, an adapter having a tubular portion connected downward from the flange, and a lower flat surface formed of a metal material. A second member having a first flow path opening toward the first member, wherein the flange portion of the adapter is disposed on the upper flat surface of the first member, and the cylinder of the adapter is provided in the first flow path of the first member. The lower portion of the second member is disposed on the upper surface of the flange portion, and a bolt is screwed into the female screw hole of the female screw member via the second member, thereby forming an adapter on the upper end of the female screw member. And the second member is screwed and fastened. Since it entered with a stable tightening force across the second member made of a metal material with respect to the first member using the synthetic resin material to a long period of time.
Thus, the first seal member disposed between the tubular portion of the adapter and the first flow path of the first member can completely prevent the internal fluid from leaking outside, and also has the flange portion and the lower side of the second member. External leakage of the fluid can be completely suppressed by the second seal member disposed between the flat surface and the second seal member. Further, according to the above, the second member can be a conventionally used second member made of a metal material as it is, while the first member can be formed of a synthetic resin material.
According to this, sharing of parts and reduction of material cost can be achieved, and reduction of product manufacturing cost can be achieved.
Further, forming the first member from a synthetic resin material is effective in reducing the weight of the product, and is particularly effective in a fuel supply device used for an internal combustion engine.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of a two-member mounting device according to the present invention.
FIG. 2 is a top plan view of the adapter used in FIG.
FIG. 3 is a vertical sectional view taken along line AA of FIG. 2;
FIG. 4 is a longitudinal sectional view showing a conventional two-member mounting device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st member 1A Upper flat surface 1B 1st flow path 2 Female screw member 2A Female screw hole 3 Adapter 3A Flange 3B Tube section 4 1st seal member 20 2nd member 20A Lower flat surface 20B 2nd flow path 21 2nd seal Element

Claims (1)

A female screw member 2 formed of a synthetic resin material, formed of a metal material while having a first flow path 1B opened toward the upper flat surface 1A, and having a female screw hole 2A formed therein is fixed toward the upper flat surface. A first member 1 arranged;
A second member 20 formed of a metal material and having the second flow path 20B opened toward the lower flat surface 20A;
A flat plate-shaped flange portion 3A formed of a metal material and disposed between the upper flat surface 1A of the first member 1 and the lower flat surface 20A of the second member 20;
An adapter 3 formed by projecting downward from the flange 3A and being inserted into the first flow path 1B of the first member 1;
The flange 3A of the adapter 3 is disposed between the upper flat surface 1A of the first member 1 and the lower flat surface 20A of the second member 20, and the cylindrical portion 3B is located within the first flow path 1B of the first member 1. Inserted into the
The upper end 2B of the female screw member 2 and the lower flat surface 20A of the second member 20 are connected to the flange 3A of the adapter 3 by a bolt B which is screwed from the second member 20 toward the female screw hole 2A of the female screw member 2. Pinched by
The first flow path 1B of the first member 1 and the second flow path 20B of the second member 20 communicate with each other inside the cylindrical portion 3B of the adapter 3, and the first flow path 1B of the first member 1 and the cylindrical portion 3B. Wherein the first seal member 4 is pressed between the outer periphery of the second member 20 and the second seal member 21 is pressed between the lower flat surface 20A of the second member 20 and the flange 3A. Mounting equipment.

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