JP3972896B2 - Vehicle piping structure - Google Patents

Description

  The present invention relates to a piping structure for a vehicle in which a pipe member that connects an indoor part and an outdoor part of a vehicle is passed through a partition wall of a vehicle compartment.

  Taking a one-box vehicle as an example, as shown in FIG. 6, the rear cooler for cooling the rear compartment of this type of vehicle has an under floor of the front compartment floor 1 below the driver's seat F (the position outside the compartment). The outdoor unit 9 that liquefies the refrigerant is installed, and the indoor unit 8 that blows cold air to the rear compartment by the latent heat when the refrigerant evaporates is installed on the ceiling of the passenger compartment behind the driver's seat F. There is one in which the machine 8 is connected by a pipe member 2 and the refrigerant is circulated between the both 8 and 9. The pipe member 2 that connects the outdoor unit 9 and the indoor unit 8 includes two members that send the refrigerant from the outdoor unit 9 to the indoor unit 8 and those that return the refrigerant from the indoor unit 8 to the outdoor unit 9.

  When the outdoor unit 9 and the indoor unit 8 are connected by the pipe member 2, the pipe member 2 is passed through the vehicle compartment floor 1 and piped from the vehicle compartment outside to the vehicle interior side, and FIG. The structure is shown. A small-diameter through hole 6 dedicated to pipe member insertion is formed in the passenger compartment floor 1, and the pipe member 2 is inserted through the through hole 6 through a grommet 61. As the grommet 61, one having a high sealing function as described in Patent Document 1 below is used. In FIG. 7, reference numeral 3 denotes a service hall, which is provided so as to allow maintenance and inspection of an outdoor unit 9 and a battery (not shown) installed under the floor of the passenger compartment floor 1 from the vehicle interior side. It is blocked by. Reference numeral 7 denotes a clamp that fixes the pipe member 2 to the vehicle body at a position below the passenger compartment floor 1.

  Incidentally, the pipe member 2 that connects the outdoor unit 9 under the floor and the indoor unit 8 on the ceiling has a long overall length, and it is difficult to insert the pipe member 2 through the small-diameter through hole 6. Therefore, in the conventional structure, in order to improve the insertion operation, the pipe member 2 is provided between the indoor member 25 extending along the pillar P of the vehicle body, the outdoor member 26 extending below the floor, and both the members 25, 26. It is divided into an intermediate member 27 that is interposed and inserted into the through hole 6. The intermediate member 27 is formed in a substantially L-shape having a short length by a straight portion extending in the vertical direction and a refracting portion refracting from the lower end so that the intermediate member 27 can be easily inserted into the through hole 6.

The pipe member 2 inserts the straight portion of the intermediate member 27 into the through hole 6 through the grommet 61, connects the upper end and the end of the indoor member 25 by the connecting portion 28, and connects the lower end and the outdoor member 26. The terminal is connected by the connecting unit 28.
JP 2001-176346 A

  However, in the conventional piping structure, the through hole 6 of the passenger compartment floor 1 is small, and the structure becomes complicated because the pipe member 2 must be divided in order to improve the workability of inserting the pipe member 2 therethrough. The production cost of the pipe member 2 is expensive. Further, at the time of piping, it takes time and labor to connect the members 25, 26, 27 of the divided pipe member 2 in series. In particular, when the indoor member 25 and the intermediate member 27 are connected, these connecting portions 28 are close to the pillar P, so that the connecting work is difficult. Therefore, it is conceivable to dispose the connecting portions 28 of the members 25 and 27 apart from the pillar P. However, since the pipe member 2 is covered with a garnish covering the pillar P, the pipe member 2 is separated from the pillar P. The garnish swells greatly toward the passenger compartment, and the passenger compartment space is restricted accordingly. Further, each connecting portion 28 of the pipe member 2 is liable to cause problems such as leakage of refrigerant flowing through the pipe, that is, clogging.

  Therefore, in view of the above circumstances, the present invention eliminates the need to divide the pipe member in the piping structure of the pipe member that connects the outdoor part and the indoor part through the partition wall that partitions the vehicle interior side and the vehicle interior side. The object is to provide a vehicle piping structure that is simple and low in cost and has good installation work.

  The present invention provides a vehicle pipe structure in which a pipe member connecting a vehicle interior part and a vehicle exterior part is passed through a partition wall partitioning the interior of the vehicle interior and the exterior of the vehicle interior. A concave notch is formed in a part of the peripheral portion of the service hole that enables maintenance and inspection of the parts installed on the outside from the vehicle interior side, and the pipe member is inserted into the notch and the above-mentioned A partition member is provided so as to pass through the partition wall, and a cover member is provided on the partition wall portion so as to integrally cover the notch and the insertion portion of the pipe member inserted through the partition wall from the vehicle interior side. When passing the pipe member through the partition wall, it uses a relatively large service hole for maintenance and inspection of other parts, rather than being inserted through a small-diameter through hole that is formed exclusively as in the conventional structure. Insertion work can be done easily. Therefore, it is not necessary to divide the pipe member, and the cost of the pipe member can be reduced and the piping structure can be simplified. Furthermore, since the pipe member and the notch are covered with the cover member, the pipe member is protected, and the pipe member does not interfere with maintenance and inspection work around the service hole.

  The insertion portion of the pipe member includes a straight portion along the vehicle compartment side panel surface of the partition wall, and a bent portion that is bent substantially perpendicularly from the straight portion toward the outside of the passenger compartment and passes through the notch portion. The cover member has a substantially hat-shaped cross section, and is attached to the panel surface on the compartment side of the partition wall so as to cover the straight portion and the bent portion of the pipe member. A tunnel passage is formed by (Claim 2). The cover member has a simple structure and can cover the pipe member in a compact manner.

  The cover member is provided with a receiving portion that abuts against the straight portion of the pipe member on the inner surface of the cover member, and a clamp piece that is hinged to the side edge is provided, and the pipe member is connected with the receiving portion and the clamp piece. Clamping from above and below (Claim 3). The pipe member is stably held by the cover member without displacement.

  An edge of the cover member facing the service hole is formed in a shape that continuously connects both side positions of the notch in the peripheral portion of the service hole. By installing the cover member, the service hole is restored to its original shape, and when closing the service hole, the same lid member as the conventional one can be used.

  According to the present invention, in the pipe structure of the pipe member that connects the outdoor part and the indoor part through the partition wall that partitions the vehicle interior side and the vehicle interior side, it is not necessary to divide the pipe member, and the structure is simple and The work of penetrating the partition wall by the pipe member can be performed at a low cost.

  An embodiment in which the present invention is applied to a pipe structure of a pipe member 2 that connects an outdoor unit 9 and an indoor unit 8 of a rear cooler of a one-box automobile shown in FIG. 6 will be described with reference to FIGS. In the one-box vehicle, a rear cooler outdoor unit 9 is installed in the engine room under the floor 1 of the front passenger compartment, which is a partition wall that partitions the interior and exterior of the vehicle. On the vehicle interior side, a rear cooler indoor unit 8 is installed on the vehicle interior ceiling behind the front seat F. The pipe member 2 connecting the outdoor unit 9 and the indoor unit 8 passes from the outdoor unit 9 side through the vehicle interior floor 1 of the front compartment to the vehicle interior side, and on the vehicle interior surface of the intermediate pillar P of the vehicle body. It rises to the ceiling along and is connected to the indoor unit 8.

  As shown in FIG. 1, a service hole 3 is formed at a position near the intermediate pillar P in the passenger compartment floor 1 of the front compartment. The service hall 3 is for maintenance and inspection of the outdoor unit 9 and the battery (not shown) installed under the floor of the passenger compartment floor 1, and is formed in a rectangular shape of about 30 cm square. A concave notch 4 is formed at the peripheral edge of the service hole 3 at the opening side edge on the intermediate pillar P side, and the pipe member 2 is inserted into the notch 4.

  As shown in FIGS. 1 to 4, the pipe member 2 includes two metal pipe members 2a and 2b having slightly different pipe diameters, and both the pipe members 2a and 2b extend in parallel. Both pipe members 2a and 2b are bent at a substantially right angle from the lower end of the vertical portion along the intermediate pillar P toward the notch portion 4, and are substantially horizontal straight portions 21 that are along the upper surface of the panel of the passenger compartment floor 1. And a bent portion 22 that is bent at a substantially right angle downward from the straight portion 21, and the pipe portion 2a, 2b is inserted by inserting the bent portion 22 side into the cutout portion 4. Pass through the passenger compartment floor 1. The notch portion 4 has a depth dimension larger than the diameter of the large-diameter pipe member 2a, and a notch width larger than the combined width of the outer diameter dimensions of the pipe members 2a and 2b.

  The insertion part and the notch part 4 of both the pipe members 2a and 2b are covered from the vehicle interior side by an integrated synthetic resin cover member 5. The cover member 5 is integrally formed with a main body portion 50 having a substantially inverted U-shaped cross section provided so as to cover the straight portions 21 to the bent portions 22 of both pipe members 2a and 2b, and lower edges on both sides of the main body portion 50. The formed flange portion 51 forms a substantially hat-shaped cross section. The end of the main body 50 on the pipe straight section 21 side is open, and the end on the notch 4 side is blocked by an end wall 501 having a vertical wall shape. The main body 50 has a tunnel passage that communicates with the passenger compartment floor 1 from the passenger compartment side through the notch portion 4 to the exterior of the passenger compartment under the floor when the flange portions 51 at the lower edges of both sides are attached to the passenger compartment floor 1. It is designed to be configured.

  On the side of the notch 4 of the cover member 5, the flange widths of the flange portions 51 on both sides of the main body 50 are enlarged, and fixing bolt through holes 52 are formed in the wide portions of the flange portions 51 on both sides. It is.

  A flange portion 51a facing the service hole 3 is formed at the lower edge of the end wall 501 of the main body portion 50 at the end of the cover member 5 on the notch portion 4 side. The flange portion 51a is a flange on both sides of the main body portion 50. These are formed continuously so as to bridge the portions 51.

  On the upper inner surface of the main body 50, there is provided a receiving portion 53 that abuts the outer periphery of each of the pipe members 2a and 2b inserted into the main body 50 and receives them. The receiving portion 53 is provided with a vertical wall orthogonal to the tunnel passage on the inner surface of the main body portion 50, and a lower edge of the vertical wall corresponding to each pipe member 2a, 2b and a half of which is in contact with the upper half outer peripheral portion thereof. Arc-shaped receiving grooves 531 and 532 are juxtaposed. Two receiving portions 53 are provided on the inner surface of the upper portion of the main body portion 50 at a slight interval.

  Opposing to the receiving portion 53, a clamp piece 54 is provided on the lower opening side of the main body portion 50 to hold the pipe members 2 a and 2 b from above and below with the receiving portion 53. The clamp piece 54 is a belt-like plate body orthogonal to the tunnel passage, and one end is connected to one flange portion 51 of the main body portion 50 via an integral hinge 55, and the main body centering on the integral hinge 55. The lower opening side of the main body 50 can be opened and closed by rotating in a direction crossing the portion 50.

  The clamp piece 54 is provided with standing walls at positions corresponding to the receiving portions 53 on the inner surface facing the lower opening side of the main body 50, and the pipe members 2a and 2b are respectively provided on the upper edges of the standing walls. Semicircular arc-shaped receiving grooves 541 and 542 that are in contact with the lower half outer periphery of the lower half are arranged side by side.

  Further, a locking claw 56 is erected on the free end side of the clamp piece 54. Opposing to this, the other flange portion 51 of the main body portion 50 is formed with a locking hole 57 into which the locking claw 56 can be fitted and locked.

  The cover member 5 is attached in advance to the insertion portions of the pipe members 2a and 2b before the pipe members 2a and 2b are inserted into the service holes 3. The cover member 5 is arranged so that the main body portion 50 covers the insertion portion from the straight portion 21 to the bent portion 22 of the pipe members 2a and 2b from above with the clamp piece 54 opened. The grooves 531 and 532 are brought into contact with the upper half outer peripheral portions of the pipe members 2a and 2b, respectively. Thereafter, the clamp piece 54 is closed, the receiving grooves 541 and 542 of the clamp piece 54 are brought into contact with the lower half outer peripheral portions of the pipe members 2a and 2b, respectively, and the pipe member 2a, The linear part 21 of 2b is clamped up and down, and the latching claw 56 of the clamp piece 54 is fitted and latched in the latching hole 57 on the main body part 50 side so that the cover member 5 is inserted into the insertion part 50 of the pipe members 2a and 2b. Fix it so that it can be covered. The inner surface of the main body 50 is formed along the pipe members 2a and 2b so as to be orthogonal to the receiving portion 53, and when the pipe members 2a and 2b are sandwiched between the receiving portion 53 and the clamp piece 54. Longitudinal ribs 58 are provided in contact with the outer peripheral top surfaces of the pipe members 2a and 2b so as to hold the pipe members 2a and 2b together with the receiving portion 53 and the clamp piece 54.

  The pipe members 2a and 2b are inserted into the notch 4 using the service hole 3 and the notch 4 is inserted into the notch 4 by the flange 51a on the end wall 501 side of the main body 50. While covering from above, the cover member 5 is positioned on the panel upper surface of the vehicle compartment floor 1 so that the edge of the flange 51a connects the opening edges on both sides of the notch 4 in a straight line. Then, the cover member 5 is fastened and fixed to the passenger compartment floor 1 by the bolt member B through the bolt through holes 52 of the flange portions 51 on both sides thereof.

  A rubber seal member 40 is provided along the periphery of the notch 4, and a cover member 5 is attached to cover both ends of the periphery of the notch 4 and a cover member that overlaps with these positions. 5 between both flange portions 51 and between the intermediate position of the peripheral portion of the notch portion 4 and the clamp piece 54 of the cover member 5. Further, in the tunnel passage in the main body 50 of the cover member 5, the receiving portion 53 on the upper inner surface of the main body 50 sandwiching the pipe members 2a and 2b and the clamp piece 54 abut on the outer periphery of the pipe members 2a and 2b. And sealed.

  The notch 4 is closed by the cover member 5, and the service hole 3 that is essentially rectangular in shape is closed by the lid member 30. In this case, the flange portion 51a of the cover member 5 that forms a part of the opening edge of the service hole 3 receives a part of the outer peripheral edge of the lid member 30 from below through the rubber sealing material 31 (FIG. 4). The lid member 30 and the cover member 5 that block the service hole 3 are covered with a carpet 10 that covers the surface of the passenger compartment floor 1. The vertical portions of the pipe members 2 a and 2 b provided along the intermediate pillar P are covered with a pillar garnish G that covers the intermediate pillar P.

  According to the present embodiment, the notch 4 is provided in a part of the peripheral part of the relatively large service hole 3 formed in the passenger compartment floor 1 in order to maintain and inspect parts originally installed under the floor. Since the pipe members 2a and 2b are inserted into the notch portion 4, when the pipe members 2a and 2b are passed, the insertion work can be performed with good workability using the large service hole 3. Therefore, it is not necessary to make the pipe into a divided structure as in the conventional structure, the production cost of the pipe can be reduced, and the labor of connecting the pipes is not required.

  After the insertion, the pipe members 2a and 2b are accommodated in the notch 4, so that the shape and size of the service hole 3 are not restricted. Further, since the notch portion 4 and the insertion portions of the pipe members 2a and 2b that are inserted therethrough are covered with the cover member 5, the pipe members 2a and 2b are obstructive when maintenance and inspection of the parts under the floor through the service hole 3 is performed. do not become. Further, since the cover member 5 is connected to the edge of the flange portion 51a on the side of the notch portion 4 at both sides of the notch portion 4 of the peripheral portion of the service hole 3, the service hole 3 The same lid member 30 that is restored to its original shape and closes the service hole 3 can be used.

  Further, since the cover member 5 sandwiches the pipe members 2a and 2b by the receiving portion 53 and the clamp piece 54 in the main body portion 50 and supports them, the cover member 5 is fastened and fixed to the passenger compartment floor 1 By doing so, the pipe members 2a and 2b can be fixed to the vehicle body side, and the clamp 7 (FIG. 7) for fixing the pipe members 2a and 2b to the vehicle body side at the underfloor position as in the prior art becomes unnecessary. Further, the cover member 5 is sealed between the peripheral portion of the notch portion 4 by the sealing material 40, and the receiving portion 53 and the clamp piece 54 abut against the outer periphery of the pipe members 2a and 2b so that the tunnel passage in the main body portion 50 is formed. Since it is sealed, sufficient sealing performance can be secured.

  Furthermore, in this embodiment, there is no need to provide a space around the pipe members 2a and 2b because the pipe members 2a and 2b do not have a connecting portion near the passenger compartment floor 1 as in the conventional structure. 2b can be arrange | positioned along the vehicle interior floor 1 or the intermediate pillar P, and vehicle interior space is not restrict | limited.

  Although this embodiment demonstrated the piping structure for the cooler which penetrates a vehicle interior floor, this invention is not restricted to this, A pipe member in the position close | similar to the service hole formed in this in the partition part which partitions off the vehicle interior and exterior It can be widely applied to a piping structure that penetrates.

It is a perspective view which shows the principal part of the piping structure of this invention. It is a top view of the said piping structure. It is sectional drawing in the position which follows the III-III line | wire of FIG. It is sectional drawing in the position which follows the IV-IV line of FIG. It is sectional drawing in the position in alignment with the VV line | wire of FIG. It is the schematic of the piping structure which connects the outdoor unit and indoor unit of the rear cooler of a one box vehicle. It is a principal part perspective view of the conventional piping structure.

Explanation of symbols

1 Bulkhead (vehicle compartment floor)
2,2a, 2b Pipe member (pipe)
21 linear part 22 bent part 3 service hole 4 notch part 5 cover member 51a edge facing service hole 53 receiving part 54 clamp piece 55 hinge coupling part (integral hinge)
8 Outdoor parts (rear cooler outdoor unit)
9 Indoor parts (rear cooler indoor unit)

Claims (4)

In the piping structure of a vehicle that allows a pipe member that connects a vehicle interior part and a vehicle exterior part to pass through a partition wall that partitions the vehicle interior side and the vehicle exterior side,
A concave notch is formed in a part of the peripheral portion of the service hole that enables maintenance and inspection from the inside of the passenger compartment to the parts that are formed in the partition wall and are installed outside the passenger compartment. The pipe member is inserted through the partition wall, and the partition wall is provided with a cover member that integrally covers the notch and the pipe member inserted through the partition from the vehicle interior side. A vehicle piping structure characterized by that. The insertion portion of the pipe member includes a straight portion along a panel surface on the vehicle interior side of the partition wall portion, a bent portion that is bent at a substantially right angle from the straight portion toward the vehicle compartment outer side and passes through the notch portion. In almost L shape,
The cover member has a substantially hat-shaped cross section, and is attached to a panel surface on the vehicle interior side of the partition wall so as to cover a straight portion and a bent portion of the pipe member, and the tunnel surface is constituted by the panel surface. The vehicle piping structure according to 1.   The cover member is provided with a receiving portion that abuts against the straight portion of the pipe member on the inner surface of the cover member, and a clamp piece that is hinged to the side edge is provided, and the pipe member is connected with the receiving portion and the clamp piece. The piping structure for a vehicle according to claim 2, wherein the piping structure is sandwiched from above and below.   The vehicle piping structure according to any one of claims 1 to 3, wherein an edge of the cover member facing the service hole is formed in a shape that continuously connects both side positions of the notch portion of the peripheral portion of the service hole. .

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