JPH10124U - Bracket mounting structure in heat exchanger - Google Patents

Abstract

(57) [Summary] [Object] To provide a bracket mounting structure in a heat exchanger that can secure strength when mounting a bracket to an end plate. In a bracket mounting structure for a heat exchanger, a bracket includes an end plate mounting portion and a vehicle body side mounting portion, and the end plate mounting portion includes a substrate portion.
And a pair of mounting pieces 35 having a bolt insertion hole bent in the longitudinal direction of the end plate so as to be in surface contact with both side plate portions of the end plate and connected to the substrate portion; An interposition piece 36 bent in a direction perpendicular to the longitudinal direction of the end plate and in the same direction as the mounting piece so as to be interposed between both side plate parts of the end plate; The vehicle body-side mounting portion 33 is provided with a fixed portion, and the mounting piece portion 3 is provided on both ends of the substrate portion.
A bolt is inserted into the bolt insertion hole of No. 5 and the end plate attaching portion is attached to the end plate by bolt fastening.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a mounting structure of a bracket for mounting a parallel flow type heat exchanger on a vehicle body and a heat exchanger.

[0002]

[Prior art]

 In general, when a parallel flow type heat exchanger is mounted on a vehicle body, it is known to mount the heat exchanger using a bracket, for example, the one described in Japanese Utility Model Laid-Open No. 2-100080. In this type of heat exchanger 1, as shown in FIG. 6, flat tubes 2 and wavy fins 3 are alternately stacked, and a header tank 4 is connected to both ends of the stacked tubes 2, respectively. The heat exchange medium flows between the inlet pipe 5 and the outlet pipe 6 attached to the pipe. Further, at the upper and lower ends of the heat exchanger 1, that is, on both sides in the stacking direction, aluminum end plates 7 having a U-shaped cross section are disposed to reinforce the flat tubes 2 stacked. A bracket 9 shown in FIG. 7 is attached through a bolt insertion hole 8 provided in each end plate 7, and the heat exchanger 1 is fixed to the vehicle body via the bracket 9. As shown in FIG. 8, the bracket 9 has an end plate mounting portion 9A having a U-shaped cross section so as to fit inside the U-shaped end plate 7, and an end plate mounting portion 9A. It comprises a vehicle body side mounting portion 9B which is extended to be connected to the plate mounting portion 9A and mounted on the vehicle body side, and is generally formed of steel. Holes 10 corresponding to the insertion holes 8 of the end plate 7 are provided in the end plate mounting portion 9A, and bolts 11 are inserted into these holes 8 and 10 to fasten the nut 12 as shown in FIG. Thus, the end plate attaching portion 9A is attached to the end plate 7. On the other hand, a mounting hole 13 and a weld nut 14 are fixed to the mounting hole 9B in the vehicle body side mounting portion 9B, and the nut 14 is attached to the vehicle body by fastening a bolt.

[0003]

[Problems to be solved by the invention]

 However, according to the bracket mounting structure in the above-described conventional heat exchanger, since the end plate is generally made of aluminum, when the bolt is strongly tightened, the end plate 7 and the end of the bracket 9 are closed as shown in FIG. The plate mounting portion 9A bends and has a drawback that the strength at the time of mounting cannot be ensured.

Accordingly, an object of the present invention is to provide a mounting structure of a bracket in a heat exchanger that can secure strength when the bracket is mounted on an end plate.

[0005]

[Means for Solving the Problems]

 In the invention described in the first claim of the present application, a plurality of tubes are stacked in parallel with each other, header tanks are connected to both ends of the plurality of tubes, and end plates are provided on both sides in the stacking direction of the stacked tubes. This end plate is formed in a U-shaped cross section in which both side plate portions along the longitudinal direction of the tube are bent in the tube stacking direction, and a bracket fixed to a vehicle body is attached to the end plate. In the bracket mounting structure for the container, the bracket includes an end plate mounting portion and a vehicle body side mounting portion, and the end plate mounting portion is provided to face the opening having the U-shaped cross section and is provided with the opening. And a pair of mounting pieces which are provided in the longitudinal direction of the end plate so as to be in contact with both side plate portions of the end plate and which have a bolt insertion hole. Department and front An interposition piece that is connected to the substrate and is bent in a direction perpendicular to the longitudinal direction of the end plate and in the same direction as the mounting piece so as to be interposed between both side plates of the end plate. The vehicle-body-side mounting portion is formed so as to be connected to the end plate mounting portion, and has a fixed portion that is mounted on the vehicle body side, and the bolt insertion of the pair of mounting pieces of the end plate mounting portion is performed. This is a mounting structure of a bracket in a heat exchanger in which a bolt is inserted into a hole and the end plate mounting portion is mounted on the end plate by bolt fastening.

In the invention described in the first aspect of the present invention, in order to mount the bracket to the heat exchanger, the end plate mounting portion of the bracket is set on the end plate, and the end plate and the side plate portions of the end plate are provided with face contact. It is fixed by inserting a bolt into a bolt insertion hole provided in advance on a pair of contacting pieces that are in contact with each other and fastening the nut. Further, the bracket is fixedly mounted on the vehicle body side by fixing the fixed portion of the mounting portion on the vehicle body side to the vehicle body side.

In this case, the interposition piece is interposed so that the end surface of the interposition piece connected to the board portion of the end plate attachment portion of the bracket abuts on the inner surfaces of both side plates of the end plate in the bolt insertion direction. Therefore, even if the bolt is strongly tightened when fastening the bolt, the strength of the end plate and the end plate mounting part in the bolt insertion direction is secured by the interposition piece, and the end plate, etc., which was conventionally seen, will bend. Can be prevented, and the attachment to the heat exchanger can be ensured. Further, since the mounting piece and the interposition piece of the bracket are bent in the same direction, they can be easily bent at once when they are pressed.

[0008] The invention described in the second claim of the present application is that a plurality of tubes are stacked in parallel with each other, header tanks are connected to both ends of the plurality of tubes, and both ends in the stacking direction of the stacked tubes are arranged on both sides. An end plate is provided, and this end plate is formed in a U-shaped cross section in which both side plate portions along the longitudinal direction of the tube are bent in the tube laminating direction, and a bracket fixed to the vehicle body is attached to the end plate. In the bracket mounting structure of the heat exchanger to be mounted, the bracket includes an end plate mounting portion and a vehicle body side mounting portion, and the end plate mounting portion is provided to face the opening having the U-shaped cross section. A pair of mounting pieces connected to the substrate, bent so as to abut on both side plates of the end plate and having bolt insertion holes, and an end face formed by punching the substrate.A holding portion provided so as to abut against an inner surface of a side plate portion of the end plate, wherein the vehicle body-side mounting portion is formed so as to be connected to the end plate mounting portion, and is fixed to the vehicle body. A bracket mounting structure for a heat exchanger having a configuration in which a bolt is inserted into a bolt insertion hole of the pair of mounting pieces of the end plate mounting portion and the end plate mounting portion is mounted on the end plate by bolt fastening. is there.

In the invention described in the second aspect of the present invention, in order to mount the bracket to the heat exchanger, the end plate mounting portion of the bracket is set on the end plate, and the end plate and both side plate portions of the end plate are provided with face contact. It is fixed by inserting a bolt into a bolt insertion hole provided in advance on a pair of contacting pieces that are in contact with each other and fastening the nut. Further, the bracket is fixedly mounted on the vehicle body side by fixing the fixed portion of the mounting portion on the vehicle body side to the vehicle body side.

[0010] In this case, there is a holding portion formed by punching out the substrate portion of the end plate mounting portion of the bracket and having an end surface provided in contact with the inner surface of the side plate portion of the end plate. Even if it is strongly tightened, the strength of the end plate and the end plate mounting part in the bolt insertion direction is ensured by the holding part, and it is possible to prevent the end plate etc., which has been seen conventionally, from bending, and to attach it to the heat exchanger. Can be ensured.

[0011]

[Embodiment of the invention]

 Hereinafter, a specific example of the present invention will be described with reference to the drawings. As shown in FIG. 1, the heat exchanger 20 of this specific example includes a plurality of flat tubes 21 stacked in parallel with each other via a corrugated fin 22, and header tanks 23 at both ends of the stacked flat tubes 21. Is connected. The heat exchange medium passes in parallel through the laminated flat tubes 21 between the inlet pipe 24 provided in the inlet header tank 23 and the outlet pipe 25 provided in the outlet header tank 23. Swept away.

At the upper and lower ends of the heat exchanger 20, end plates (side plates) 26 for reinforcing the laminated flat tubes 21 are provided, and both ends thereof are attached to a header tank 23. As shown in FIG. 2, the end plate 26 includes a bottom plate 27 and both side plates 28, and the bottom plate 27 is integrally brazed to the corrugated fins 22. The both side plate portions 28 are formed by bending both sides of the bottom plate portion 27 along the tube longitudinal direction and in the tube stacking direction, and have a U-shaped cross section. A bracket 31 shown in FIG. 2 is attached to predetermined positions on the left and right sides of the side plate portion 28 of the end plate 26, and is attached to the vehicle body via the bracket 31.

The bracket 31 includes an end plate attaching portion 32 attached to the end plate 26 and a vehicle body side attaching portion 33 attached to the vehicle body. The end plate attaching portion 32 has a substrate portion 34 formed to have a size to cover the opening of the U-shaped end plate 26. Further, a pair of mounting pieces 35, an interposition piece 36, and a vehicle-body-side mounting section 33 are provided in series on the substrate 34. The pair of mounting pieces 35 are bent at substantially right angles to the substrate 34 so as to be able to contact the outer surfaces of both side plates 28 of the end plate 26. In this specific example, as shown in FIG. 3, a pair of mounting pieces 35 are provided at both ends of the substrate 34. As shown in FIG. 4, a bolt insertion hole 37 is provided in one of the pair of mounting pieces 35, and a nut is not required in the other mounting piece 35. In addition, there is provided a screw hole (tapping screw) 38 in which a burring is formed and a screw thread is formed. Further, holes 39 for bolt insertion are provided in both side plate portions 28 of the end plate 26 so as to correspond to the insertion holes 37 and the screw holes 38 of the pair of mounting pieces 35, respectively. A bolt 40 is inserted through the screw hole 38 and the hole 39 and is screwed into the screw hole 38 so that the mounting piece 35 is fixed to the side plate 28 of the end plate 26.

Further, at each end of the substrate portion 34 along the longitudinal direction of the end plate 26, an interposition piece 36 bent in a direction orthogonal to the longitudinal direction of the end plate 26 is provided. ing. That is, it is provided near each pair of mounting pieces 35. The interposed piece 36 is formed to have a width substantially equal to the inner space between the side plates 28 of the end plate 26, and the left and right end surfaces thereof are formed on the inner surfaces of the both side plates 28 in the vicinity of the pair of mounting plate portions 35. Abut Therefore, the interposition piece 36 is interposed between the pair of attachment pieces 35 to be fastened by inserting the bolt 40 and the vicinity of both side plate parts 28, and the side plate of the end plate is fastened when the bolt is fastened. In addition, it is possible to prevent the mounting piece from bending, and secure the strength at the time of fastening. Further, since the strength is ensured by the interposition piece, the end plate can be formed thin, and the weight of the end plate can be reduced. Further, since the mounting piece of the steel bracket is located outside the side plate portion of the end plate, it is possible to prevent the end plate from being damaged by bolts or the like.

Further, a vehicle body side mounting portion 33 is provided on a side portion of the substrate portion 34 between the two sets of mounting piece portions 35. A bolt insertion hole 42 is provided at the distal end side of the mounting portion 33, and a nut 43 is integrally fixed to the bolt insertion hole 42, and a bolt is inserted into the bolt insertion hole 42 and a bolt insertion hole of a bracket or the like on the vehicle body side. And the vehicle body side mounting portion 33 is mounted on the vehicle body side.

Also, in this specific example, since two sets of a pair of end plate mounting pieces 35 are provided on both sides of the board section 34, respectively, A pair of holding parts 45 are provided between them. As shown in FIGS. 2 to 5, the holding portion 45 is formed in an elongated quadrangular shape in a plane, and of these four sides, a side portion along the longitudinal direction of the end plate 26 is punched, and a V-shape is formed by pressing. The end plate 26 is formed so as to protrude toward the bottom plate portion 27 of the end plate 26. Further, each of the holding portions 45 is formed so that one end surface thereof abuts on the inner surface of one side plate portion 28 of the end plate 26. Therefore, similarly to the above-described interposition piece 36, the strength of one side plate 28 is secured by one holding portion 45, and the strength of the other side plate 28 is secured by the other holding portion 45. The structure is such that the strength of both side plate portions 28 at the intermediate portion of the end plate 26 can be ensured even if the mounting piece 35 is bolted. Incidentally, such a bracket can be easily prepared by press working.

[0017]

[Effect of the invention]

 In the invention described in the first claim of the present application, a plurality of tubes are stacked in parallel with each other, header tanks are connected to both ends of the plurality of tubes, and end plates are provided on both sides in the stacking direction of the stacked tubes. This end plate is formed in a U-shaped cross section in which both side plate portions along the longitudinal direction of the tube are bent in the tube stacking direction, and a bracket fixed to a vehicle body is attached to the end plate. In the bracket mounting structure of the container, the bracket includes an end plate mounting portion and a vehicle body side mounting portion, and the end plate mounting portion is provided so as to face the opening having the U-shaped cross section and is provided with the opening. And a pair of mounting pieces which are provided in the longitudinal direction of the end plate so as to be in contact with both side plate portions of the end plate and which have a bolt insertion hole. Department and front An interposition piece that is connected to the base plate and is bent in a direction orthogonal to the longitudinal direction of the end plate and in the same direction as the mounting piece so as to be interposed between both side plates of the end plate; The vehicle body side mounting portion is formed so as to be connected to the end plate mounting portion and has a fixed portion mounted to the vehicle body side, and the bolt insertion of the pair of mounting pieces of the end plate mounting portion is performed. This is a bracket mounting structure for a heat exchanger having a configuration in which a bolt is inserted into a hole and the end plate mounting portion is mounted on the end plate by bolt fastening.

Accordingly, the interposition piece is interposed so that the end face of the interposition piece connected to the board portion of the end plate mounting portion of the bracket abuts on the inner surfaces of both side plates of the end plate in the bolt insertion direction. Therefore, the strength of the end plate and the end plate mounting portion in the bolt insertion direction is secured by the interposition piece even if the bolt is strongly tightened when tightening the bolt, and the end plate, etc., which has been seen conventionally, is prevented from bending. Can be stopped, and the attachment to the heat exchanger can be secured. Further, since the mounting piece and the interposition piece of the bracket are bent in the same direction, when they are pressed, they can be easily bent at once.

According to the invention described in the second aspect of the present invention, a plurality of tubes are stacked in parallel with each other, header tanks are connected to both ends of the plurality of tubes, and both ends in the stacking direction of the stacked tubes are arranged on both sides. An end plate is provided, and this end plate is formed in a U-shaped cross section in which both side plate portions along the longitudinal direction of the tube are bent in the tube laminating direction, and a bracket fixed to the vehicle body is attached to the end plate. In the mounting structure of the bracket in the heat exchanger to be mounted, the bracket includes an end plate mounting portion and a vehicle body side mounting portion, and the end plate mounting portion is provided to face the opening having the U-shaped cross section. A pair of mounting pieces connected to the substrate, bent so as to abut on both side plates of the end plate and having bolt insertion holes, and an end face formed by punching the substrate. Before A holding portion provided so as to abut against an inner surface of a side plate portion of the end plate, wherein the vehicle-body-side mounting portion is formed so as to be connected to the end plate mounting portion and fixed to the vehicle body side. A bracket mounting structure for a heat exchanger having a configuration in which a bolt is inserted into a bolt insertion hole of the pair of mounting pieces of the end plate mounting portion and the end plate mounting portion is mounted to the end plate by bolt fastening. is there.

[0020] Therefore, there is a holding portion which is formed by punching the board portion of the end plate attaching portion of the bracket and whose end surface is provided so as to abut against the inner surface of the side plate portion of the end plate. In addition, the strength of the end plate and the end plate mounting part in the bolt insertion direction is secured by the holding part, which prevents bending of the end plate etc. as seen conventionally, and secures the mounting to the heat exchanger. It becomes possible.

As described above, according to the present invention, the strength of the end plate is secured by the interposition piece portion and the holding portion at the time of bolt fastening, and the end plate and the like as in the related art can be prevented from being bent. Mounting to the exchanger can be assured. Further, since the strength of the end plate can be ensured, the end plate can be formed thin, and the weight of the end plate can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heat exchanger according to an embodiment of the present invention.

FIG. 2 is a perspective view of a bracket attached to an end plate.

FIG. 3 is a front view of a bracket and an end plate.

FIG. 4 is a left side view of a bracket and an end plate.

FIG. 5 is a plan view of a bracket and an end plate.

FIG. 6 is a perspective view of a heat exchanger according to a conventional example.

FIG. 7 is a perspective view of a bracket.

FIG. 8 is a cross-sectional view of a bracket attached to an end plate.

FIG. 9 is a cross-sectional view showing an end plate that is bent when a bolt is fastened.

[Explanation of symbols]

 Reference Signs List 20 heat exchanger 21 tube 23 header tank 26 end plate 27 bottom plate portion 28 side plate portion 31 bracket 32 end plate attachment portion 33 vehicle body attachment portion 34 board portion 35 attachment piece portion 36 interposition piece portion 37 bolt insertion hole 38 bolt insertion hole 40 Bolt 45 Holder

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazuhito Makino 39, Higashihara, Chiyo, Odai-gun, Osato-gun, Saitama

Claims (2)

[Utility model registration claims] 1. A plurality of tubes are stacked in parallel with each other, a header tank is connected to both ends of the plurality of tubes, and end plates are provided on both sides in the stacking direction of the stacked tubes. A bracket mounting structure in a heat exchanger in which both side plates along the longitudinal direction of the tube are formed in a U-shaped cross section obtained by bending the tube in the tube stacking direction, and a bracket fixed to a vehicle body is mounted on the end plate. The bracket includes an end plate attachment portion and a vehicle body-side attachment portion, and the end plate attachment portion is provided to face the opening having the U-shaped cross section and has a size to cover the opening. And a pair of mounting pieces connected to the board portion and bent in the longitudinal direction of the end plate so as to be in surface contact with both side plate portions of the end plate and having a bolt insertion hole; Be the end An interposition piece bent in the same direction as the mounting piece in a direction orthogonal to the longitudinal direction of the end plate so as to be interposed between both side plate parts, and the pair of mounting pieces and The interposition pieces are provided on both ends of the substrate, respectively, and the vehicle-body-side mounting portion is formed so as to be connected to the end plate mounting portion and includes a fixed portion that is mounted on the vehicle body. A bracket mounting structure for a heat exchanger, wherein a bolt is inserted into a bolt insertion hole of the pair of mounting pieces of the end plate mounting portion, and the end plate mounting portion is mounted on the end plate by bolt fastening. 2. A plurality of tubes are stacked in parallel with each other, header tanks are connected to both ends of the plurality of tubes, and end plates are provided on both sides of the stacked tubes in the stacking direction. A bracket mounting structure in a heat exchanger in which both side plates along the longitudinal direction of the tube are formed in a U-shaped cross section obtained by bending the tube in the tube stacking direction, and a bracket fixed to a vehicle body is mounted on the end plate. The bracket includes an end plate attaching portion and a vehicle body-side attaching portion, wherein the end plate attaching portion is provided so as to face the opening having the U-shaped cross section, and is provided continuously with the substrate portion. A pair of mounting pieces having a bolt insertion hole bent in the longitudinal direction of the end plate so as to be in surface contact with both side plate portions of the end plate; and a longitudinal direction of the both end plates of the substrate portion. Along And a holding portion provided so that an end surface thereof is in contact with an inner surface of a side plate portion of the end plate. The vehicle body-side mounting portion is formed so as to be connected to the end plate mounting portion. A fixing portion attached to the vehicle body side, wherein a bolt is inserted into a bolt insertion hole of the pair of attachment pieces of the end plate attaching portion, and the end plate attaching portion is attached to the end plate by bolt fastening. Mounting structure of the bracket in the heat exchanger.