JP2010064643A - Fixing structure of vehicle duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a vehicle duct, capable of facilitating assembly of a duct on a body with a simple structure for high assemblability and cost reduction. <P>SOLUTION: In the fixing structure 1 of the vehicle duct, a rear end 42 of the duct (downward duct) 4 having a rear end 42 provided with a blowing-off portion 43 molded by blow molding and blowing off air to an occupant on a rear seat on the rear end side is fixed on a vehicle body 20. On the rear end 42 of the lower duct 4, a hollow protrusion portion 44 protruding toward the body 20 side is integrally formed. The hollow protrusion portion 44 is formed with an engagement claw portion 45 engaging with an engagement hole 23 formed at the body 20. A part of the hollow protrusion portion 44 including the engagement claw portion 45 is inserted into the engagement hole 23 while the engagement claw portion 45 is being elastically deformed toward the inside of the hollow protrusion portion 44, and the engagement claw portion 45 is engaged with the engagement hole 23, thereby fixing the rear end 42 of the downward duct 4 onto the body 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle duct fixing structure for fixing a duct having a blowout port for blowing air conditioned to a passenger in a rear seat to a vehicle body.

2. Description of the Related Art Conventionally, in vehicles such as automobiles, various vehicle ducts for blowing air from an air conditioner and their fixing structures are known (see Patent Document 1).
As a vehicle duct, for example, there is one configured to blow out air from an air conditioner to a passenger in a rear seat. Such a vehicle duct is provided on the floor surface of the lower part of the front seat from the air conditioner arranged in the instrument panel of the vehicle, and is formed by connecting a plurality of ducts. ing. And the most downstream duct is provided with the blower outlet which blows off air with respect to the passenger | crew of a rear seat.

  Moreover, the rear end part of the duct provided with the blower outlet is being fixed to bodies, such as the floor surface of a vehicle. Conventionally, through holes are formed in the projecting piece provided at the rear end of the duct, and further through holes are formed in the body such as the floor, and a fixing member such as a clip is inserted into these through holes. The rear end of the duct was fixed to the vehicle body.

JP 2006-273274 A

  However, in said structure, when fixing a duct with respect to a body, another members, such as a fixing member for fixing both, are required. Therefore, the work man-hours and the number of parts required for assembly increase. Further, in order to secure a seating surface or the like for attaching a fixing member or the like, there are many restrictions on the shapes of the duct and the body, and the degree of design freedom is reduced. Further, depending on the shape of the fixing member or the like, the duct fixed to the body may not be easily removed.

  The present invention has been made in view of such conventional problems, and a vehicle in which a duct can be easily assembled to a body with a simple structure, can improve assembling workability, and can reduce costs. It is intended to provide a fixing structure for a duct.

The present invention is a duct having a rear end portion formed by blow molding, the front end side being connected to a duct on the upstream side, and a rear end portion provided with a blowout port for blowing air conditioned to a passenger in the rear seat on the rear end side. A vehicle duct fixing structure for fixing the rear end of the vehicle body to a vehicle body,
A hollow protrusion protruding toward the body side is integrally provided at the rear end of the duct, and the hollow protrusion is engaged with an engagement hole provided in the body. There are nail parts,
Inserting at least a part of the hollow projection including the engagement claw into the engagement hole while elastically deforming the engagement claw toward the inside of the hollow projection, By engaging with the engagement hole portion, the rear end portion of the duct is fixed to the body (claim 1).

  In the vehicle duct fixing structure of the present invention, the hollow protrusion is integrally provided at the rear end portion of the duct formed by blow molding. And the said rear-end part of the said duct is being fixed to the said body by engaging the said engaging claw part provided in this hollow protrusion part with the said engaging hole part provided in the said body. Therefore, the duct can be easily assembled to the body with a simple structure. Thereby, the assembly | attachment workability | operativity of the said duct can be improved.

Moreover, the said hollow projection part is formed in the hollow shape by blow molding. Therefore, the engaging claw provided on the hollow protrusion is also formed in a hollow shape. Therefore, the operation of elastically deforming the engagement claw portion and engaging with the engagement hole portion can be easily performed. Thereby, the assembly | attachment workability | operativity of the said duct can be improved.
Further, in the state where the duct is assembled, the engagement state between the engagement claw portion and the engagement hole portion can be easily achieved by deforming the engagement claw portion formed in a hollow shape and its peripheral portion. Can be released. That is, the duct fixed to the body can be easily removed.

  Further, unlike the prior art, there is no need for a separate member for fixing the duct to the body. Therefore, the number of work steps required for assembling the duct can be reduced, and the assembling workability can be improved. Moreover, the number of parts required for the assembly of the duct can be reduced, and the cost can be reduced. In addition, it is possible to reduce restrictions on the shapes of the duct and the body that have occurred to attach another member, and the degree of design freedom can be increased.

  Thus, according to the present invention, there is provided a vehicle duct fixing structure in which the duct can be easily assembled to the body with a simple structure, and the assembling workability can be improved and the cost can be reduced. can do.

In the present invention, the hollow projecting portion has a hollow extending surface extending on the same plane from a rear end surface of the rear end portion of the duct, and protrudes rearward on the hollow extending surface. Preferably, the engaging claw is provided (claim 2).
In this case, in a state where the duct is assembled, the hollow extending surface of the peripheral portion of the engaging claw portion not inserted into the engaging hole portion or the rear end surface on the same plane is pushed. Then, the position of the engaging claw portion can be easily changed by elastically deforming. Thereby, the engagement state of the engagement claw portion and the engagement hole portion can be released more easily. That is, the duct fixed to the body can be removed more easily.

Moreover, it is preferable that the said engaging claw part has an opposing surface which opposes the peripheral part back surface of this engaging hole part in the state inserted in the said engaging hole part.
In this case, the engagement state between the engagement claw portion and the engagement hole portion can be further enhanced. Therefore, the rear end portion of the duct can be sufficiently and reliably fixed to the body.

Further, the engaging claw portion has an inclined surface that inclines so that a protruding height in a direction orthogonal to the insertion direction becomes higher along the insertion direction of the hollow protrusion portion as it approaches the opposing surface. (Claim 4).
In this case, it is possible to smoothly insert at least a part of the hollow protrusion into the engagement hole along the inclined surface of the engagement claw along the inner peripheral edge of the engagement hole. it can. Therefore, the workability of assembling the duct can be further improved.

A vehicle duct fixing structure according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the vehicle duct fixing structure 1 of this example is connected to an upstream side duct 3 (hereinafter, referred to as an upstream side duct 3), and to a rear seat occupant on the rear end side. On the other hand, the rear end 42 of the duct 4 (hereinafter referred to as the downstream duct 4) having the rear end 42 provided with the air outlet 43 that blows out air-conditioned air is fixed to the body 20 of the vehicle.

  As shown in FIG. 1, the upstream duct 3 has a main duct 30 having an opening 300 that is connected in the vertical direction to an air conditioner (not shown) disposed in an instrument panel (not shown) of the vehicle. And a first branch duct 31 and a second branch duct 32 branched from the main duct 30.

As shown in the figure, the first branch duct 31 includes a first connection portion 311 connected to the main duct 30 in the vertical direction and a vehicle floor 21 (see FIG. 5) that is bent horizontally from the lower end of the first connection portion 311. 3) It consists of the 1st horizontal part 312 along the top.
Similarly to the first branch duct 31, the second branch duct 32 is also bent horizontally from the second connection portion 321 connected to the main duct 30 in the vertical direction and the lower end of the second connection portion 321. It consists of the 2nd horizontal part 322 along the vehicle floor 21 (FIG. 3).

As shown in the figure, the downstream duct 4 connected in the horizontal direction with respect to the first horizontal section 312 is provided on the rear end side of the first horizontal section 312 of the first branch duct 31 of the upstream duct 3. ing. Similarly, on the rear end side of the second horizontal portion 322 of the second branch duct 32 of the upstream duct 3, the downstream duct 4 connected in the horizontal direction with respect to the second horizontal portion 322 is provided. Yes.
Here, both the downstream ducts 4 have the same configuration. Therefore, hereinafter, the downstream duct 4 connected to the first branch duct 31 will be described, and the description of the downstream duct 4 connected to the second branch duct 32 will be omitted.

As shown in FIGS. 2 and 3, the downstream duct 4 is formed by blow molding and is formed in a hollow shape. The downstream duct 4 includes a main body portion 40 provided in the horizontal direction along the vehicle floor 21, a rising portion 41 provided to rise upward from the rear end of the main body portion 40, and an upper end of the rising portion 41. The rear end portion 42 protrudes in the horizontal direction toward the rear and is wider than the main body portion 40 and the rising portion 41. Further, a distal end portion 401 connected to the upstream duct 3 is provided on the distal end side of the main body portion 40.
In addition, the upper surface 421 of the rear end portion 42 is provided with an air outlet 43 that opens in the rising direction of the rising portion 41 and blows out air-conditioned air to the passenger in the rear seat.

As shown in FIG. 3, an outlet grill 25 is provided above the outlet 43 so as to cover the outlet 43. The blowout grill 25 has a blowout opening 251 that opens to the rear, and is configured such that air blown out from the blowout outlet 43 passes through the blowout grill 25 and is sent out from the blowout opening 251.
Further, the floor carpet 24 is laid between the rear end portion 42 and the blowing grill 25 with the upper surface 421 of the rear end portion 42 as a seating surface.

  As shown in FIGS. 2 and 3, a hollow protrusion 44 protruding toward the body 20 is integrally provided at a position near the center of the rear end portion 42 in the width direction. The hollow projecting portion 44 has a hollow extending surface 440 that extends from the rear end surface 420 of the rear end portion 42 on the same plane. The hollow extending surface 440 is provided with an engaging claw portion 45 protruding rearward.

  Further, as shown in FIG. 3, a floor cross member 22 is disposed between the rear end portion 42 and the vehicle floor 21. The floor cross member 22 is disposed on the vehicle floor 21 so as to extend in the vehicle width direction. The floor cross member 22 is provided with an engagement hole 23 formed through the floor cross member 22. A part of the hollow projection 44 including the engagement claw 45 is inserted into the engagement hole 23, and the engagement claw 45 is engaged with the engagement hole 23.

  Specifically, as shown in FIGS. 2 and 3, the engaging claw portion 45 has a facing surface 451 that faces the rear surface 231 of the peripheral edge portion of the engaging hole portion 23 of the floor cross member 22 that is a plate-like member. is doing. The opposing surface 451 faces the peripheral edge rear surface 231 of the engaging hole 23, whereby the engaging claw 45 of the hollow protrusion 44 is engaged with the engaging hole 23, and the downstream end of the downstream duct 4. 42 is fixed to the body 20.

  As shown in FIGS. 2 and 3, the engagement claw portion 45 has a higher protrusion height in a direction orthogonal to the insertion direction as it approaches the facing surface 451 along the insertion direction of the hollow protrusion 44. It has the inclined surface 452 inclined so that it may become.

Next, the effect in the vehicle duct fixing structure 1 of this example will be described.
In the vehicle duct fixing structure 1 of this example, when assembling the downstream duct 4, its front end 401 is connected to the upstream duct 3, and the rear end 42 is rotated downward about the connection position. Let As a result, as shown in FIG. 3, the engaging claw portion 45 provided in the hollow protrusion 44 has an inclined surface 452 that contacts the inner peripheral edge 232 of the engagement hole 23, and the inside of the hollow protrusion 44. To be elastically deformed. Then, a part of the hollow protrusion 44 including the engagement claw 45 is inserted into the engagement hole 23. Thereafter, the engaging claw portion 45 inserted into the insertion hole portion 23 returns to its original shape, and the opposing surface 451 of the engaging claw portion 45 faces the rear surface 231 of the peripheral edge portion of the engaging hole portion 23, thereby engaging. The claw portion 45 engages with the engagement hole portion 23.

  That is, in this example, the rear end portion 42 of the downstream duct 4 is fixed to the body 20 by engaging the engaging claw portion 45 provided on the hollow protrusion 44 with the engaging hole portion 23 provided on the body 20. is doing. Therefore, the downstream duct 4 can be easily assembled to the body 20 with a simple structure. Thereby, the assembly workability | operativity of the downstream duct 4 can be improved.

  Further, unlike the prior art, a separate member for fixing the downstream duct 4 to the body 20 is not required. Therefore, the work man-hours required for assembling the downstream duct 4 can be reduced, and the assembling workability can be improved. Moreover, the number of parts required for the assembly | attachment of the downstream duct 4 can be reduced, and cost reduction can be aimed at. Moreover, the restriction | limiting regarding the shape of the downstream duct 4 and the body 20 which had arisen in order to attach another member can be decreased, and a design freedom can be raised.

  Further, in the state where the downstream duct 4 is assembled, the engagement claw portion 45 and the engagement hole portion 23 are engaged by elastically deforming the engagement claw portion 45 formed in a hollow shape and its peripheral portion. The state can be easily released. That is, the downstream duct 4 fixed to the body 20 can be easily removed.

  In particular, in this example, the hollow projecting portion 44 has a hollow extending surface 440 that extends on the same plane from the rear end surface 420 of the rear end portion 42 of the downstream duct 4. 440 is provided with an engaging claw portion 45 protruding rearward. Therefore, in the state where the downstream duct 4 is assembled, the hollow extending surface 440 around the engaging claw portion 45 not inserted into the engaging hole portion 23 or the rear end surface 420 on the same plane is pushed. Thus, the position of the engaging claw portion 45 can be easily changed by elastically deforming. Thereby, the engagement state of the engagement claw part 45 and the engagement hole part 23 is cancelled | released, and the downstream duct 4 fixed to the body 20 can be removed easily.

  Thus, according to this example, the downstream duct 4 can be easily assembled to the body 20 with a simple structure, and the vehicle duct can be improved in assembling workability and cost can be reduced. The fixing structure 1 can be provided.

Explanatory drawing which shows the upstream duct and downstream duct in an Example. Explanatory drawing which shows one downstream duct in an Example. AA sectional view taken on the line in FIG.

Explanation of symbols

1 Vehicle Duct Fixing Structure 20 Body 23 Engagement Hole 4 Duct (Downstream Duct)
42 Rear end 43 Air outlet 44 Hollow protrusion 45 Engagement claw

Claims (4)

The rear end of the duct formed by blow molding, the front end side being connected to the upstream duct, and the rear end portion having a blowout port for blowing air conditioned to the rear seat occupant on the rear end side A vehicle duct fixing structure for fixing a part to a vehicle body,
A hollow protrusion protruding toward the body side is integrally provided at the rear end of the duct, and the hollow protrusion is engaged with an engagement hole provided in the body. There are nail parts,
Inserting at least a part of the hollow projection including the engagement claw into the engagement hole while elastically deforming the engagement claw toward the inside of the hollow projection, The vehicle duct fixing structure, wherein the rear end of the duct is fixed to the body by engaging the engaging hole with the engaging hole.   2. The hollow projecting portion according to claim 1, wherein the hollow projecting portion has a hollow extending surface extending on the same plane from a rear end surface of the rear end portion of the duct, and protrudes rearward on the hollow extending surface. A vehicle duct fixing structure, wherein the engaging claw portion is provided.   3. The vehicle duct according to claim 1, wherein the engagement claw portion has a facing surface that faces a rear surface of a peripheral edge portion of the engagement hole portion in a state of being inserted into the engagement hole portion. Fixed structure.   4. The inclined surface according to claim 3, wherein the engagement claw portion is inclined such that a protrusion height in a direction orthogonal to the insertion direction becomes higher along the insertion direction of the hollow projection portion as it approaches the opposing surface. A vehicle duct fixing structure characterized by comprising:

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