JP2000120496A - Connecting structure of air hose mounted on automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make work reliable and simple by connecting/fixing the engaging part by engaging with the engaging object part by strongly inserting one end side into an air delivering port of one automobile constituting part and strongly inserting the other end side into an air introducing port of the other automobile constituting part in a state of installing connecting members in the recessed parts on both ends of an air hose. SOLUTION: In an air intake hose 10 having a bending structure and imparting flexibility to the bellows-shaped part 11, this is deformed by manpower, and circular ring-shaped connecting members 13 composed of a hard material are installed in the recessed parts 12. In such a state, when a right side opening is strongly inserted into a blowoff port of an air cleaner and a left side opening is strongly inserted into an intake port 16 of a throttle body 3, claws 18 of the engaging parts 14 engages with the engaging object parts 17, so that both are engaged with each other. At this time, the air intake hose 10 is pressed to the mating side (the air blowoff port of the air cleaner and the intake port 16 of the throttle body 3) with elasticity by connecting members 13, and projecting strips 15 are deformed by being pressed, so that the seal action becomes more reliable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for an air hose mounted on an automobile.

[0002]

2. Description of the Related Art As shown in FIG. 4, an air hose, for example, an air intake hose 1 mounted on a conventional vehicle is mounted near an engine of the vehicle, connects an air cleaner 2 and a throttle body 3 and cleans with an air cleaner 2. The converted air is introduced into the throttle body 3.
The air intake hose 1 is required to have a vibration proof property because it constantly vibrates, and is required to have flexibility to absorb an error in the arrangement of the air cleaner 2 and the throttle body 3.

[0003] Therefore, rubber or the like is often used as the material of the air intake hose 1. Usually, such an air intake hose 1 is often connected to an air cleaner 2 and a throttle body 3 by a metal clamp 4. As this type of clamp, for example, Japanese Patent Application Laid-Open No. 7-2479
No. 26 discloses a wire clamp, a leaf spring clamp and a band clamp. In such a structure, when attaching the hose 1 to the openings of the air cleaner 2 and the throttle body 3, it is necessary to tighten the clamp with the screw 5, thereby connecting and fixing the hose 1 to the mating component. With this tightening force, the connection and fixing are ensured, and the space between the hose 1 and the mating part is sealed.

[0004]

In the above structure,
Since the connection is made by tightening the screw 5, if it is loose, the sealing property is impaired, and in the worst case, there is a danger that the hose 1 may come off. Especially in automobiles, this type of hose 1 located near the engine
When the vehicle is running, the screw 5 is constantly vibrating due to the vibration of the engine and the vibration transmitted from the road surface. Therefore, the phenomenon that the screw 5 is loosened over time easily occurs. Further, there is a problem that it takes time to tighten the screw 5.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and has a connection structure for an air hose mounted on an automobile which can connect the hose reliably and simply without using screws. Is provided.

[0006]

Means for Solving the Problems The present invention (claim 1) provides:
In a connection structure for connecting one end of an air hose having rubber elasticity to an air outlet of one automobile component that derives air, and the other end to an air inlet of another automobile component that introduces air, A concave portion formed on an outer peripheral surface of an end of an air hose, a ring-shaped connecting member made of a hard material removably fitted into the concave portion, a plurality of engaging portions formed on the connecting member, And an engaged portion formed on an outer peripheral surface of the air outlet of the component and the air inlet and engaged with the engaging portion.

In this configuration, one end of the air hose is connected to the air outlet of one automobile component and the other end is connected to the air inlet of another automobile component with the connecting members mounted in the recesses at both ends of the air hose. If it is inserted strongly, the engaging portion engages with the engaged portion, and both are connected and fixed. At this time, the connecting portion of the hose is slightly enlarged by its elasticity, and comes into close contact with the mating side.

The present invention (Claim 2) is an end of the air hose, wherein the connecting member is pressed against the air outlet of the one automobile component and the air inlet of the other automobile component. A protrusion is formed on the surface of the air hose. In this configuration, when both ends of the air hose are attached to the air outlet of one automobile component and the air inlet of another automobile component, the ridge on the hose side is strongly adhered to the air outlet and the air inlet. In addition, the sealing performance between the two is further ensured.

In the present invention (claim 3), the air hose is an air intake hose, the one automobile component is an air cleaner, and the other automobile component is a throttle body. In such a configuration,
The air intake hose supplies air while ensuring an air seal between the air cleaner and the throttle body. Also, there is no possibility that the connection portion is loosened or disconnected by vibration transmitted from the engine and the road surface.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connection structure of an air hose, ie, an air intake hose for connecting an air cleaner (one vehicle component) and a throttle body (another vehicle component), which are vehicle components, will be described below as an embodiment. .

In FIG. 1, reference numeral 10 denotes an air intake hose having a bent structure and provided with flexibility at a bellows-like portion 11, which is made of a blend rubber of PVC and NBR, and has a hardness ( JISA) is set to 60 to 70. The air intake hose 10 has a left opening connected to the throttle body 3 and a right opening connected to an air cleaner (not shown). 12 are concave portions formed on the outer peripheral surfaces of both ends of the air intake hose 10. 1
Reference numeral 3 denotes a connecting member mounted in the concave portion 12, and has four engaging portions 14 formed at equal intervals. An end 15 of the air intake hose 10 is connected to an air outlet of the air cleaner, that is, an air outlet (not shown) and an air inlet of the throttle body 3, that is, an air intake 16 by the connecting member 13. The ridges formed on the surface of the air intake hose 10 to be pressed.
Is an end inner peripheral surface of the air intake hose 10,
Two are formed in parallel at positions corresponding to the concave portions 12 and one is formed on a surface that comes into contact with the engaged portion 17 formed in the intake hole 16. Its height is about 0.5 mm, which acts to improve the sealing performance. The engaged portion 17 is formed in a protruding shape on the outer peripheral surface of the intake hole 16 of the throttle body 3 at a predetermined distance from the end. The outer diameter of the intake hole 3 outside the engaged portion 17 is formed slightly larger than the inner diameter of the end of the air intake hose 10, and this portion is inserted into the hose 10. The air outlet of the air cleaner 2 has the same structure. The air cleaner is usually made of resin, and the throttle body 3 is made of metal.

Connection member 13 fitted and mounted in recess 12
Is formed in a ring shape made of a hard material, and as shown in FIG. 2, an engaging portion 14 is formed on the outer periphery thereof, and has a key-shaped claw 18. 19 is a rib for reinforcing this claw. As a material of the connection member 13, a nylon resin having excellent mechanical strength can be used.

FIG. 3 shows an engaging portion of a mold structure for manufacturing the connecting member 13. In the right mold 20 in the drawing, the inside of the engaging portion 14 is hollow and reaches the claw 18 portion. The core 21 is formed integrally. The left mold 22 is a mold that forms the outer periphery of the connection member 13 and the claw 18 portion. Cavities 24 in these molds 20, 22
After the heated and melted nylon resin is injected into the mold, the mold is opened right and left to form the connection member 13.

Since the air intake hose 10 has rubber elasticity, the connection member 13 is attached to the concave portion 12 by manually deforming the air intake hose 10, and in this state, the opening on the right side is connected to the outlet of the air cleaner (not shown). When the left opening is strongly inserted into the intake port 16 of the throttle body 3, the claws 18 of the engaging portion 14 are engaged with the engaged portions 17, and the two are connected. At this time, the connecting member 13 elastically presses the air intake hose 10 against the other side (the air outlet of the air cleaner and the air inlet of the throttle body), and the ridge 15 is pressed and deformed, so that the sealing action is more reliable. It is said.

[0015]

As described above, according to the present invention (claim 1), the two members can be connected only by the operation of being inserted into the opening of the mating part with the connecting member attached to the air hose. Work can be performed easily and quickly.
Further, in the connected state, the air hose is tightened with a constant pressure by the connecting member, so that a uniform tightening force can be obtained. Further, since screws such as conventional metal clamps are not used, there is no occurrence of an accident such as a decrease in sealing force due to loosening of screws or a hose falling off. Furthermore, since the connection member can be easily attached to and detached from the air hose by human power, the work of attaching the connection member to the hose is simple.

Furthermore, when the air hose is transported, the connecting member can be attached to the air hose, and there is no possibility that the air hose will fall off. In the conventional clamp, if the screw is loosened and attached to the hose, the clamp may come off the hose during transportation or the like and may be lost.

Further, according to the present invention (claim 2), the ridge formed on the surface of the air hose is pressed by the connecting member and makes strong contact with the mating part, so that the sealing action between the two is more reliably performed. Things.

Further, according to the present invention (claim 3), the present invention is suitably applied to a connection structure of an air intake hose to which vibration of an engine and vibration from a road surface are applied. In other words, the connection structure according to the present invention is strong against vibration and, therefore, maintains the sealing property, so that the air cleaned by the air cleaner does not leak, and the uncleaned outside air does not enter. It can be introduced into the throttle body.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a connection structure for an air intake hose according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an engagement portion of a connection member.

FIG. 3 is a cross-sectional view showing a mold for manufacturing a connection member.

FIG. 4 is a perspective view for explaining a conventional structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1,10 Air intake hose 2 Air cleaner 3 Throttle body 4 Metal clamp 5 Screw 12 Concave 13 Connection member 14 Engagement part 15 Ridge 16 Intake hole 17 Engagement part 18 Claw 19 Rib 20,22 Mold

Claims (3)

[Claims] 1. One end of an air hose having rubber elasticity is connected to an air outlet of one automobile component for introducing air, and the other end is connected to an air inlet of another automobile component for introducing air. In the connection structure, a concave portion formed on an outer peripheral surface of an end portion of the air hose, a ring-shaped connection member made of a hard material removably fitted in the concave portion, and a plurality of engagements formed on the connection member A connection structure for an air hose mounted on a vehicle, comprising: a portion; and an engaged portion formed on an outer peripheral surface of the air outlet port and the air introduction port of the vehicle component and engaged with the engagement portion. . 2. An end of the air hose, which protrudes from a surface of the air hose which is pressed by the connecting member into an air outlet of the one vehicle component and an air inlet of the other vehicle component. The connection structure for an air hose mounted on an automobile according to claim 1, wherein a strip is formed. 3. The air hose according to claim 1, wherein the air hose is an air intake hose, the one automobile component is an air cleaner, and the other automobile component is a throttle body. Connection structure.