JPH0628327Y2 - Structure of the connection part of the vehicle air conditioning duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a structure of a connecting portion of a vehicle air conditioning duct.

2. Description of the Related Art For example, a rear heat duct has a connecting portion as shown in FIG.

The rear heat duct 1 is composed of two left and right parts 2 and 3 which extend under the driver's seat and the passenger's seat, respectively, and after each part is molded separately, they are butted as shown in FIG. To be glued.

Alternatively, as shown in FIG. 7, two duct parts 2,
3 is partially overlapped, and the protrusion 4 and the concave groove 5 formed in advance in the overlapping portion are positioned and integrated.

However, according to the above means, the former structure shown in FIG. 6 causes insufficient rigidity in the connecting portion and requires much labor for assembling, and the latter structure shown in FIG. In some cases, the inner piece of the overlapped portion may be deformed and projected toward the ventilation passage.

As one without such a defect
There is a connection structure disclosed in Japanese Unexamined Patent Publication No.

This is a first duct in which a slender plate-like bendable clip piece is projected from the open end in the axial direction outward and the base of the clip piece is surrounded by a flexible elastic sealing material, and the first duct.
Second duct having a large-diameter portion into which the duct is inserted, and a connection hole into which the clip piece is inserted is formed in the base portion of the large-diameter portion, and the first duct is formed into the second duct. The clip piece inserted into the duct and inserted into the connecting hole is bent and engaged.

Problems to be Solved by the Invention However, in the one disclosed in Japanese Utility Model Laid-Open No. 56-65290, it is necessary to insert the clip piece into the connection hole or bend the clip piece, and thus it takes time to assemble.

Further, although the duct can be prevented from being deformed at the connecting portion to some extent, the improvement of the rigidity at that portion cannot be expected so much.

Means for Solving the Problems In order to solve the above problems, the present invention provides a structure of a connecting portion of a vehicle air conditioning duct in which an end portion of one duct is inserted and connected to an end portion of another duct. A rod-shaped male member traversing the ventilation passage of the duct or a female member provided with a groove having a shape matching approximately one surface of the male member is provided upright inside the end of the insertion duct. At the end, the female member or the male member is installed upright across the ventilation passage of the duct.

Action When the end of one duct is inserted into the end of the other duct, the male member of the inserted duct enters the groove of the female member of the insertion duct, or the male member of the insertion side inserts the female member of the inserted side. As a result of entering the member, both ducts will always be combined in place.

Therefore, the duct can be assembled easily, quickly and accurately.

Further, the duct wall at the connecting portion is supported and reinforced by the rod-shaped male member and the rod-shaped female member fitted thereto.

Therefore, the rigidity of the duct wall at the connecting portion is improved, and the occurrence of deformation or the like is prevented.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 4.

The duct in this embodiment is a rear heat duct as shown in FIG. 4, and comprises a left portion 6 to be arranged on the left side of the vehicle compartment and a right portion 7 to be arranged on the right side of the vehicle compartment, and its connecting portion. The structure of is as shown in FIGS.

The left part 6 of the duct is the inserted side and the right part 7 of the duct
Is set on the insertion side, and a step 9 is formed at the end 8 of the duct on the insertion side.

Therefore, when the end portion 8 of the right duct portion 7 is inserted into the end portion 10 of the left duct portion 6, the outer duct wall of the connecting portion becomes substantially flush as shown in FIG.

At the end portion 10 of the left portion 6 of the duct, a rod-shaped male member 11 that crosses the ventilation passage is erected inside thereof.

The male member 11 is formed in a drum shape and is interposed between the upper and lower walls of the duct. It should be noted that it may have a cylindrical shape instead of the hourglass shape, or may have a solid cylindrical shape.

On the other hand, the male member 11 is provided at the end 8 of the right part 7 of the duct.
A female member 13 provided with a groove 12 having a shape corresponding to a substantially vertical half of one side is erected upright across the ventilation passage.

The female member 13 has a shape corresponding to a substantially vertical half of a cylinder,
It is laid across the upper and lower walls of the duct. The inner diameters of the upper and lower ends of the female member 13 match the outer diameters of the upper and lower ends of the male member 11.

Then, the end 8 of the right part 7 of the duct is connected to the end 10 of the left part 6.
When the male member 11 is inserted into the groove 12 of the female member 13, the fitting of the left and right portions 6, 7 is completed.

The rear heat duct thus assembled takes in air from the opening 14 of the connecting portion and guides it into the ventilation passages of the left and right portions 6, 7. Then, the wind blows out from the air outlets 15 in the left and right portions to the rear part of the vehicle compartment.

Although not shown, the male member 11 is attached to the end 8 on the insertion side.
The female member 13 may be provided at the end 10 on the inserted side.

Effect of the Invention As described above, according to the present invention, since the rod-shaped male member and the female member are erected at the connecting portion of the duct so as to cross the ventilation passage, the rigidity of the duct is improved and the duct wall The occurrence of deformation can also be prevented.

Further, since the female member is provided with a groove having a shape that matches one surface of the male member, when connecting the two ducts, the positions of the two ducts are regulated by the male and female members. Therefore, the duct can be assembled easily, quickly and accurately.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, FIG. 1 is an exploded perspective view of a connecting portion of a rear heat duct, FIG. 2 is a sectional view taken along line II-II of FIG. 4, and FIG. Is a sectional view taken along the line III-III in FIG. 2, FIG. 4 is a perspective view of the rear heat duct, FIGS. 5 to 7 show a conventional example, and FIG. 5 is a perspective view of the entire rear heat duct, and FIG. FIG. 7 is an exploded perspective view of the connecting portion, and FIG. 7 is a sectional view taken along line VII-VII of FIG. 5 showing the structure of another connecting portion. 8 and 10: end of duct, 11: male member, 12: groove, 13: female member.

Claims (1)

[Scope of utility model registration request] 1. A structure of a connecting portion of a vehicle air-conditioning duct in which an end of one duct is inserted and connected to an end of another duct, and a ventilation path of the duct is provided inside the end of the duct to be inserted. A rod-shaped male member or a female member provided with a groove having a shape matching substantially one surface of the male member is erected upright, and the female member or the male member is provided at the end of the insertion side duct. The structure of the connecting portion of the vehicle air-conditioning duct is characterized in that the structure is provided upright across the ventilation passage of the vehicle.