JP3175590B2 - Vehicle refrigerant piping fixing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle refrigerant pipe fixing structure, and more particularly to a pipe fixing structure suitable for fixing a refrigerant pipe to a cooler unit provided at a rear portion of a vehicle.

[0002]

2. Description of the Related Art In recent years, there has been provided an RV (recreational vehicle) vehicle in which a room is widely provided at the rear of the vehicle and two rows of rear seats are provided. In this case, in order to efficiently air-condition the rear room. Further, as shown in FIG. 13, a cooler unit 3 is provided in a body panel at the rear of the vehicle. As shown in the figure, a refrigerant pipe 7 to the cooler unit 3 is laid from a compressor 8 provided in an engine room at a front part of the vehicle to a lower part of the vehicle floor F toward a rear part of the vehicle, and rises on the vehicle floor F halfway. To the cooler unit 3.

Conventionally, the fixing of a refrigerant pipe in a penetrating portion of a vehicle floor F is performed by a structure as shown in FIG. In the figure, two refrigerant pipes 71 and 72 toward the cooler unit 3 are sandwiched by fixtures 9 and positioned in parallel,
The fixture 9 is fixed to the vehicle floor F via the packing 2 that is in close contact with the edge of the opening 66 while inserting the refrigerant pipes 71 and 72 into the opening 68 provided in the vehicle floor F. The fixing tool 9 is mounted by mounting holes 911 and 921 of the fixing tool 9 in grommets 94 installed at two places around the opening 68.
This is done by screwing a tapping screw (not shown) inserted through the hole.

The holding of the refrigerant pipes 71 and 72 by the fixture 9 is performed as follows. That is, the fixing device 9 is provided as shown in FIG.
As shown in FIG. 5, two plate-shaped fixing pieces 9 forming a substantially semicircular arc
1 and 92, and one fixed piece 92 has an arc-shaped recess 9 having guide walls 922 at two locations on the left and right on the inner side.
4,95 are formed. Refrigerant pipes 71 and 72 are located in these recesses 94 and 95, respectively, and arcuate recesses 96 and 97 formed at two inner sides of the other fixed piece 91 are pressed against the outer circumferences of the refrigerant pipes 71 and 72 and these are pressed. Both fixed pieces 9
1, 92, and the through hole 9 at the center of the inner side of the fixing piece 92.
The screw 98 inserted through the screw 23 is screwed into a screw hole 911 provided at the center of the inner side of the fixing piece 91 to connect the two.

[0005]

However, it is sometimes difficult to provide an opening for a refrigerant pipe on a vehicle floor immediately below a cooler unit because the body structure is relatively complicated or the like. It is conceivable that the refrigerant pipe is pulled out from the unit to the front of the vehicle, and the refrigerant pipe is penetrated downward by a floor panel of a vehicle entrance having a relatively simple body structure. However, this floor portion is a place where the weight of the occupant often acts when getting on and off, and it is necessary to protect the rubber-coated refrigerant pipe from an applied load.

Therefore, as shown in FIG. 16, it is conceivable to cover the entire fixture 9 with a metal cover 93 provided with a pipe outlet 931 on the side surface. However, even in the current situation, the number of parts for fixing the pipe further increases. As a result, there is a problem that it is difficult to endure a cost increase due to troublesome parts management and manufacturing.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicle refrigerant pipe fixing structure which realizes cost reduction by greatly reducing the number of parts.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, the fixture (1) is provided with through holes (66) in the vehicle floor (F) through the refrigerant pipes (71, 72) of the vehicle. Guides (12, 13), holding portions (16, 17) for holding refrigerant pipes (71, 72) to be guided, and protection for protecting the refrigerant pipes (71, 72) from the action of external force. The part (11e) is provided integrally. This fixture
(1) is a block body that is integrally formed of synthetic resin,
A refrigerant pipe (71, 7) is provided on the lower surface (11f) of the block body.
2) forming grooves (12, 13) for accommodating the guide portion and
Easily, part of the opening edges on both sides of the grooves (12, 13)
Are made to protrude in the opposite direction to form holding portions (16, 17),
In addition, the upper surface (11e) of the block body is used as a protection portion.
You. In addition, the fixing | fixed part (18,
19) may be provided.

In the first invention, the fixing tool is made of synthetic resin.
With a groove and a holding part on the lower surface of the block
And the top surface of the block is
To form a guide portion, a holding portion, a protection portion, and a fixing portion.
Significant cost because fixtures can be manufactured by integral molding
Down becomes possible.

[0010]

[0011]

In the second aspect of the present invention, the top end of the concave groove (12, 13) is formed into a curved surface gently curved from the horizontal direction to the vertical downward to reach the block body lower surface (11f).

In the second aspect of the present invention, the refrigerant pipe held in the concave groove is smoothly guided into the through hole of the vehicle floor by the top end portion of the concave groove that curves gently from the horizontal direction to the vertical downward direction. .

In the third aspect of the present invention, a plurality of partially recessed portions are formed on at least the upper surface (11e) of the block body except for the region corresponding to the recessed groove (12, 13) formation region to form a "thief" portion ( 14).

In the third aspect of the present invention, the formation of a plurality of "thinning portions" reduces the thickness of the unnecessary portion,
Cost reduction is realized by weight reduction of fixtures and saving of materials.

[0016]

FIG. 1 is a perspective view of a deck portion D at a rear entrance of a vehicle as viewed from the inside of a vehicle toward the rear. A cooler unit 3 is provided above a rear wheel house H behind the deck portion D. . Details of the cooler unit installation part are shown in FIGS.
FIG. 2 is a front view of the rear body of the vehicle as viewed from the vehicle interior, and FIG. 3 is a cross-sectional view taken along line III-III of FIG.
The cooler unit 3 located above the rear half of the rear wheel house H has a blower 31 and an evaporator 32, and the cooling air passing through the evaporator 32 passes between the body outer panel P1 (FIG. 3) and the inner panel P2 in front of the vehicle. Grill 3 opening into the vehicle interior by air duct 33
4 and is sent to a grill (not shown) provided at a position opposite to the grill 34 by an air duct 35 extending downward and crossing over the vehicle floor F. A quarter trim 4, which partially includes a cup holder 41 and an armrest 42, is provided from the inside of the vehicle so as to cover the cooler unit 3 and the air ducts 33 and 35. ) Extends in the inner space of the quarter trim 4 toward the front of the vehicle (to the left in FIGS. 2 and 3) and reaches the scuff plate 5 shown in FIG.
Note that S in FIG. 2 is a rear row rear seat.

The scuff plate 5 is disposed in the front-rear direction of the vehicle so as to cover the rocker panel 64.
(Left half of FIG. 4) is a vertical wall 511 inward (front side of FIG. 4).
The rear half 52 has a shallow dish-shaped cross section that faces downward as shown in FIG. A pair of left and right locking pieces 53 and 54 project from the lower surface of the scuff plate 5 at a plurality of positions in the longitudinal direction, and the hooks at the tip of the locking pieces 53 and 54 are attached to the rocker panel 64. Left and right receiving portions 62, 63 of the stopper 61 (FIG. 5)
It is inserted into and engaged and fixed. A number of reinforcing ribs 56 (FIG. 4) are formed on the top surface of the scuff plate 5 at intervals in the longitudinal direction.

As shown in FIG. 5, the refrigerant pipes 71 and 72 extend in the front-rear direction at an innermost position below the scuff plate 5, and one of the refrigerant pipes 71 has a small diameter liquid refrigerant pipe and the other 72 has a large diameter. Gas refrigerant pipe. Each of the refrigerant pipes 71 and 72 is formed by covering an aluminum pipe main body 711 and 721 with a rubber outer pipe 712 and 722 having a constant thickness.
Numerals 12 and 722 serve to buffer other members, and in particular, the outer tube 722 prevents leakage of dew water. The space inside the scuff plate 5 above the refrigerant pipes 71 and 72 is provided with a floor carpet K lined with felt J.
The side edge of has invaded. Note that a wire harness 73 is laid between the left and right locking pieces 53 and 54 below the scuff plate 5, and a fuel pipe 74 and a washer liquid pipe 75 are laid at the outermost positions.

As shown in FIG. 1, the refrigerant pipes 71 and 72 which have passed under the rear half 52 of the scuff plate 5 pass through a notch 55 (FIG. 4) formed at the center in the longitudinal direction.
It is pulled out onto the floor panel 65 of the entrance and exit, and penetrates below the floor panel 65 from the opening 66 provided here. The fixture 1 and the packing 2 described in detail below are provided in the penetrating portion.

FIG. 6 shows a detailed external view of the fixture 1. The refrigerant pipes 71, 72 are positioned and held by the structure described later, and are inserted into the floor opening 66 (FIG. 1) through the packing 2 into the floor pipe 66, FIG. 72 is inserted. A plan view and a side view of the fixture 1 are shown in FIGS. 7 and 8, respectively. The fixture 1 is a block made of a synthetic resin that is substantially rectangular in plan view.
“a” extends along the stepped portion F1 (FIG. 1) of the vehicle floor F, and has a vertical surface having substantially the same height as this. Further, one end surface 11c of the fixing tool 1 is also a vertical surface that contacts the notch 55 along the vertical wall 511 of the scuff plate 5. The other side surface 11b and the end surface 11d of the fixture 1 are formed as gentle slopes that smoothly follow the floor panel 65 (FIG. 1). The upper surface 11e, the side surface 11b, and the end surface 11d, which are the protection portions of the fixing tool 1, are recessed between the surfaces except for the regions where the concave grooves 12, 13 as the guide portions are formed, leaving the surface in a lattice shape of a constant width. (See FIGS. 9 and 10) A number of so-called “meat stealing” portions 14 are formed,
The overall weight and materials have been reduced.

The grooves 12 and 13 are provided on the lower surface 11 of the fixture 1.
f, the refrigerant pipes 71 and 72 are formed to have a width substantially equal to the outer diameter of each of the refrigerant pipes 71 and 72, and are formed parallel to each other obliquely from the corner 15 (FIG. 7) of the fixture 1 toward the center in plan view. FIG. 9 shows a vertical cross section of the concave groove 13. The top surface of the concave groove 13 extends horizontally from the corner portion 15, and then the distal end portion curves downward in an arc shape to reach the lower surface 11 f of the fixture. The shape of the top surface of the groove 12 is basically the same as that of the groove 13 except for the width and length.

FIG. 10 shows a cross section of the grooves 12 and 13. The upper halves of the grooves 12 and 13 each have a semi-circular cross section having substantially the same diameter as the refrigerant pipes 71 and 72 having a small diameter and a large diameter, respectively, and are fixed linearly from both ends of the semi-arc. It is open to the tool lower surface 11f. Each groove 12,
13 is a part of the longitudinal direction, the opening edges on both sides protrude in the opposite direction, the opening width is reduced, and the holding portions 16 and 17 are formed (see FIGS. 7, 9 and 10). Fixture 1 has side surface 11a
And a bracket 1 as a fixing portion on the end face 11d, respectively.
8 and 19 are protruded (FIGS. 6, 7, and 8), and brackets 18 and 19 are provided with mounting holes 181 and 191 respectively.

FIG. 11 is a plan view of the packing 2 mounted on the lower surface of the fixture 1, and FIG. 12 is an end view thereof. Packing 2
Is a rubber plate body having a constant thickness, which is formed in an oval shape in a plan view, and large and small through holes 21 and 22 for penetrating the refrigerant pipes 71 and 72 are provided at two places on the plate surface.

When using the fixture 1 having such a structure, the refrigerant pipes 71 and 72 are inserted into the through holes 21 and 22 of the packing 2 so that the packing 2 is attached to the lower surface 1 of the fixture.
1f (FIGS. 8 and 9)
Is pushed into each of the grooves 12 and 13. Refrigerant piping 71, 72
Due to the elasticity of the outer tubes 712 and 722, the diameter decreases when passing between the holding portions 16 and 17, and returns to the original shape when it reaches the upper half portion of the concave grooves 12 and 13. As a result, the refrigerant pipes 71 and 72 are positioned and held in the respective grooves 12 and 13 by the holding portions 16 and 17, and at the same time, smoothly curve from horizontal to downward along the top end of the grooves 12 and 13. Piped. In this state, the coolant pipes 71 and 72 are inserted into the floor openings 66 (FIG. 1), and the mounting holes 181 and 19 of the brackets 18 and 19 are inserted.
1 is screwed into a grommet (not shown) provided in the mounting hole 67 of the floor F to fix the fixture 1 on the floor panel 65.

At this time, the packing 2 is sandwiched between the lower surface of the fixture 1 and the floor panel 65 to close the floor opening 66 in a liquid-tight manner, and to be in close contact with the outer periphery of the penetrating portions of the refrigerant pipes 71, 72. Ensure tightness. In this state, the upper surface 11e, the side surface 11b, and the end surface 11d of the fixing device 1 are continuous with the floor panel 65 surface and the floor stepped portion F1 without generating a large step. You. The weight of the occupant passing through the entrance is received by the upper surface 11e of the fixture 1, and the lower surface 11f
Refrigerant pipe 7 held and guided in the concave grooves 71 and 72
1, 72 do not act directly, and thus the refrigerant pipe 7
1, 72 are protected without deformation.

In the above embodiment, the guide portion, the holding portion, and the protection portion are formed integrally with the resin-molded fixture, but the fixture is not necessarily required to be a resin molded product.

In the above embodiment, the bracket is provided on the fixture side for fixing the fixture to the floor panel. However, an appropriate fixing means may be provided on the floor panel side.

[0028]

According to the first aspect of the present invention, the guide portion, the holding portion,
By providing integrated protection portion in a fixture, the number of parts is possible cost with the labor of greatly reduced has been parts control is reduced, in addition, synthetic fasteners
Because it is made of resin block, it is easy to manufacture and
Significant cost reduction is realized.

[0029]

According to the second aspect of the present invention, since the fixing member is made of a synthetic resin block, in addition to the effect of the first aspect , the refrigerant pipe held in the concave groove is smoothly inserted into the through hole of the vehicle floor. I can guide you.

According to the third aspect of the present invention, a plurality of "thief parts"
Is formed, in addition to the effect of the second invention, the weight of the fixture is reduced and the cost can be reduced by saving materials.

[Brief description of the drawings]

FIG. 1 is a perspective view of a deck portion of a rear entrance from the inside of a vehicle as viewed from the rear in one embodiment of the present invention.

FIG. 2 is a front view of the rear body of the vehicle as viewed from the vehicle interior.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is an overall perspective view of a scuff plate.

FIG. 5 is a cross-sectional view taken along line VV of FIG. 4;

FIG. 6 is an overall perspective view of a fixture.

FIG. 7 is a plan view of a fixture.

FIG. 8 is a side view of the fixture as viewed from the direction of arrow A in FIG. 7;

FIG. 9 is a sectional view taken along line IX-IX in FIG. 7;

FIG. 10 is a sectional view taken along line XX of FIG. 7;

FIG. 11 is a plan view of the packing.

FIG. 12 is an end view of the packing as viewed from the direction of arrow B in FIG. 11;

FIG. 13 is a schematic side view of the vehicle showing a refrigerant pipe route.

FIG. 14 is a perspective view of a pipe fixing structure using a conventional fixing tool.

FIG. 15 is an exploded perspective view of a conventional fixing device.

FIG. 16 is a perspective view of a metal cover.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixing tool, 11e ... Block body upper surface, 11f ... Block body lower surface, 12, 13 ... Concave groove, 14 ... "Thief" part, 1
6, 17 ... holding part, 18, 19 ... bracket, 71, 7
2. Refrigerant piping.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuaki Wakamatsu 395-1, Kaminodan, Kokubu-shi, Kagoshima Inside the Toyota Auto Body Research Institute (56) References Japanese Utility Model Showa 60-72721 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) B60H 1/32 613 F16L 3/16

Claims (3)

(57) [Claims] A guide (12,12) for guiding a refrigerant pipe (71,72) of a vehicle to a through hole (66) of a vehicle floor (F).
13), holding portions (16, 17) for holding the refrigerant pipes (71, 72) to be guided, and the refrigerant pipes (71, 72).
Provided protection unit for protecting a 72) from the action of an external force (11e) and a fixture integrally formed with (1), said fastener (1) is
This block is made of synthetic resin and is integrally molded.
Refrigerant pipes (71, 72) on the lower surface (11f)
Grooves (12, 13) for accommodating
And the opening edges on both sides of the concave grooves (12, 13).
The holding portions (16, 17) are partially protruded in the facing direction.
And the upper surface (11e) of the block body is
A fixing structure for a vehicle refrigerant pipe, which serves as a protection part . 2. A top end of the concave groove (12, 13)
The fixing structure for a vehicle refrigerant pipe according to claim 1 , wherein the vehicle refrigerant pipe is gently curved from a horizontal direction to a vertical lower side and formed on a curved surface extending to a lower surface (11f) of the block body. 3. The block body upper surface (11) excluding a region corresponding to the concave groove (12, 13) formation region.
to e), a fixed structure of a vehicle refrigerant pipe according to claim 1 or 2 to form a plurality of partial recess, characterized in that the "thinned-out" section (14).