JP2019015441A - Tank attachment structure and tank attachment method - Google Patents

Abstract

To provide a tank attachment structure which can enhance the accuracy of a tank attachment position, and a tank attachment method.SOLUTION: A plate 40 has a frame part 45 to which an opening end part 11 of a tank 10 is fit, and a caulking piece 42 for caulking and fixing the opening end part 11 between the frame part 45 and itself. The opening end part 11 of the tank 10 has an opening end 15 which extends while opposing the frame part 45 of the plate 40, and a recess 19 which is recessed to a side opposite to the opening end 15. In the tank attachment method, the plate 40 is caulked and fixed by the caulking piece 42 by using a jig 50 which is engaged with the frame part 45 of the plate 40 and the recess 19 of the tank 10, and aligns the frame part 45 and the opening end part 11.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a tank mounting structure in which an open end of a tank is mounted on a plate and a tank mounting method.

  Patent Document 1 discloses a tank mounting structure including a tank that forms a flow path of a heat exchanger and a header plate to which an opening end of the tank is mounted.

  At the opening end of the tank, a plurality of end claw portions protrude in a line. At the time of manufacturing the heat exchanger, a step of bending the end claw portion of the header plate and caulking and fixing the tank to the header plate is performed.

Japanese Utility Model Publication No. 58-165589

  In the above process, the header plate is drawn to one side when the end claw portion is bent. For this reason, it is necessary to crimp and fix the tank to the header plate in a state where the header plate is supported at a predetermined position using a jig.

  However, in the above process, when the header plate is placed on and supported by the jig, the header plate may be displaced with respect to the jig. For this reason, it is necessary to sufficiently manage the tank mounting position accuracy.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a tank mounting structure and a tank mounting method capable of improving the tank mounting position accuracy.

  According to an aspect of the present invention, there is provided a tank mounting structure for attaching an opening end portion of a tank to a plate, wherein the plate has the opening between a frame portion into which the opening end portion is fitted and the frame portion. A caulking piece for caulking and fixing the end portion, and the open end portion has an open end extending opposite to the frame portion and a recess recessed on the opposite side of the open end. And the said recessed part has a shape engaged with the said frame part with respect to the jig | tool which aligns the said frame part and the said opening edge part, The tank attachment structure characterized by the above-mentioned is provided.

  According to an aspect of the present invention, there is provided a tank mounting method for attaching an opening end of a tank to a plate, wherein the plate has the opening between a frame portion into which the opening end fits and the frame portion. A caulking piece for caulking and fixing the end portion, and the open end portion has an open end extending opposite to the frame portion and a recess recessed on the opposite side of the open end. The tank mounting is characterized in that the caulking fixing is performed by the caulking piece using a jig that engages with the frame portion and the concave portion to align the frame portion and the opening end portion. A method is provided.

  According to the said aspect, when a jig | tool engages the frame part of a plate and engages with the recessed part of a tank, alignment with a frame part and an opening edge part is performed. As a result, the opening end of the tank can be accurately assembled to the plate with minimum accuracy control, and the mounting position accuracy of the tank can be further improved.

FIG. 1 is a perspective view showing a heat exchanger according to an embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. 3A, 3B, and 3C are front views showing a process of attaching the tank to the plate. FIG. 4 is a cross-sectional view of the jig along the line IV-IV in FIG. FIG. 5 is a cross-sectional view of the jig along the line V-V in FIG. FIG. 6 is a perspective view showing a jig.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a heat exchanger 1 having a tank mounting structure according to this embodiment. For simplification of description, the heat exchanger 1 is shown with a part thereof omitted.

  The heat exchanger 1 is used as a water-cooled charge air cooler that cools intake air (fluid) supercharged to an engine (not shown) with a coolant (medium).

  The heat exchanger 1 includes a pair of tanks 10 (flow path members) that guide intake air, and a core 30 as a heat exchanger that exchanges heat with the coolant through which the intake air flows. The core 30 is interposed between the pair of tanks 10. The intake air flowing through the core 2 through the tank 10 is cooled by releasing heat to the coolant flowing through the core 2.

  The metal core 30 is connected to a plurality of tubes 35 (see FIG. 2) to be stacked, a plurality of core plates 31 (flow path members) formed in a box shape that accommodates the tubes, and the core plate 31. A pair of pipes 33.

  During operation of the engine, the coolant sent from a pump (not shown) flows into the inside of the tube through one pipe 33 and flows out from the other pipe 33 after flowing through the inside of the tube, as indicated by a black arrow. .

  The resin tank 10 includes an opening end 11 that opens toward the core 30, a flow channel wall 12 that extends from the open end 11 in a dome shape, and a cylindrical shape that opens at the tip of the flow channel wall 12. And a cylindrical portion 13. A duct (not shown) is connected to the cylindrical portion 13.

  During operation of the engine, the intake air flows into the core plate 31 through one tank 10 as shown by the white arrow, flows around the tube 35, and then flows out from the other tank 10.

  Next, a structure for attaching the tank 10 to the core 30 will be described.

  The open end 11 of the tank 10 is attached to the core 30 via a frame-shaped plate 40 (tank plate).

  As shown in FIG. 2, a seal member 36 is interposed between the open end 11 of the tank 10 and the plate 40. The seal member 36 is formed of an elastic material such as a rubber material.

  The plate 40 includes a frame-like frame portion 45 into which the opening end portion 11 is fitted, and a crimping piece 42 extending from the frame portion 45 so as to extend around the opening end portion 11.

  The frame portion 45 has an L-shaped cross-sectional shape and is formed in a substantially rectangular frame shape extending around the core 30. The inner peripheral end of the frame portion 45 is joined to the core plate 31. Between the frame 45 and the core plate 31 (core 30), an annular housing groove 32 for housing the open end 11 is formed.

  The opening end 11 of the tank 10 includes an opening end 15 that extends opposite to the frame portion 45 of the plate 40, and a recess 19 and a protrusion 18 that extend side by side on the opposite side of the opening end 15.

  The open end 15 extends in a substantially rectangular annular shape extending around the core 30 and abuts on the frame portion 45 of the plate 40. A seal groove 16 that accommodates the seal member 36 is opened at the open end 15.

  The protrusion 18 protrudes from the opening end 15 with a certain distance (height) and extends substantially parallel to the opening end 15.

  The convex portions 18 extend around the flow path wall portion 12 with a constant interval. The concave portion 19 is formed between the convex portion 18 and the flow path wall portion 12. The recess 19 is recessed on the opposite side of the opening end 15 with respect to the opening end 11 and opens in a direction away from the opening end 15 (upward in FIG. 2). The recess 19 is recessed in a groove shape around the flow path wall 12 and extends substantially parallel to the open end 15.

  A plurality of protrusions 17 protrude in a line from the open end 11 of the tank 10. On the other hand, the caulking piece 42 of the plate 40 is formed with a plurality of holes 43 that engage with the protrusions 17. The opening end 11 of the tank 10 is fixed to the plate 40 by engaging the holes 43 with the protrusions 17.

  The caulking piece 42 is formed in a flat plate shape that extends along the opening end portion 11. However, the present invention is not limited thereto, and the crimping piece 42 may be formed such that a plurality of claw-shaped portions are arranged, and the holes 43 may be individually opened in each claw-shaped portion. Further, the caulking piece 42 may not be provided with the hole 43, and a claw-shaped portion may be bent along the opening end portion 11.

  Next, a method for attaching the tank 10 to the plate 40 will be described.

  As shown in FIGS. 3 to 5, when manufacturing the heat exchanger 1, a process of attaching the tank 10 to the plate 40 is performed. In this step, a pair of jigs 50 arranged so as to sandwich the plate 40 and the tank 10 are used.

  The pair of jigs 50 is supported by a guide rail (not shown) so as to move on a straight line, and is driven by a drive mechanism (not shown). As a result, the pair of jigs 50 moves along the frame portion 45 of the plate 40 and the open end portion 11 of the tank 10 while being synchronized with each other, as indicated by arrows in FIG.

  FIG. 6 is a perspective view showing the jig 50. The jig 50 is formed in a rail shape having a C-shaped cross section. The jig 50 includes a support portion 51 that supports the frame portion 45 of the plate 40, an engagement portion 52 that engages with the concave portion 19 of the tank 10, a slope-like push portion 53 that brings the tank 10 close to the plate 40, and a plate A bending portion 54 that bends 40. The engaging portion 52 protrudes in a hook shape from a portion connected to the push portion 53 toward the support portion 51. The bent portion 54 projects in a tapered shape toward the plate 40 from a portion connected to the support portion 51 and the push portion 53.

  The jig 50 includes a compression portion 55 in which the distance between the support portion 51 and the pressing portion 53 gradually decreases in the range of the dimension D, and a crimping portion 56 in which the protruding amount of the bending portion 54 gradually increases in the range of the dimension E. Have.

  Next, a process for attaching the tank 10 to the plate 40 will be described with reference to FIGS.

  First, as shown in FIG. 3A, the tank 10 is assembled to the plate 40, and the compression portion 55 of the jig 50 is fitted to the plate 40 and the tank 10. Thereby, the one end side of the seal member 36 is compressed to a specified amount.

  At this time, as shown in FIG. 4, the support portion 51 of the jig 50 supports the back surface (lower surface) of the frame portion 45 of the plate 40, and the pushing portion 53 of the jig 50 is placed on the convex portion 18 of the tank 10. It is in contact. As a result, as shown by solid line arrows in FIG. 4, the convex portion 18 of the tank 10 is drawn toward the frame portion 45 of the plate 40, and the seal member 36 is compressed.

  Subsequently, as shown in FIG. 3B, the jig 50 moves in the middle while being fitted to the plate 40 and the tank 10. As a result, the open end 11 of the tank 10 extends substantially parallel to the frame 45 of the plate 40, and the seal member 36 is compressed to a specified amount.

  Subsequently, as shown in FIG. 3C, the jig 50 moves in a state of being fitted to the plate 40 and the tank 10. By passing the jig 50 in this way, the seal member 36 is compressed to a specified amount over the entire area, and the crimping piece 42 of the plate 40 is continuously bent.

  At this time, the bending portion 54 of the jig 50 is in sliding contact with the outer surface of the crimping piece 42 of the plate 40, so that the crimping piece 42 is opened at the opening end 11 of the tank 10 as indicated by a broken arrow in FIG. 4. It is bent along. As a result, as shown in FIG. 5, the hole 43 of the plate 40 is engaged with the protrusion 17 of the tank 10, and the open end 11 of the tank 10 is caulked and fixed to the plate 40.

  The tank 10 is attached to the plate 40 as described above. Thus, the heat exchanger 1 is manufactured.

  Next, the effect of this embodiment will be described.

  The tank mounting structure includes a plate 40 to which the tank 10 is mounted. The plate 40 includes a frame portion 45 in which the opening end portion 11 of the tank 10 is fitted, and a crimping piece 42 for crimping and fixing the opening end portion 11 between the frame portion 45. The opening end 11 of the tank 10 includes an opening end 15 that extends to face the frame portion 45 of the plate 40, and a recess 19 that is recessed on the opposite side of the opening end 15. The concave portion 19 has a shape that engages with the frame portion 45 with respect to the jig 50 that aligns the frame portion 45 and the opening end portion 11.

  The tank mounting method is based on the caulking piece 42 of the plate 40 using a jig 50 that engages with the frame portion 45 of the plate 40 and the concave portion 19 of the tank 10 to align the frame portion 45 and the open end portion 11. The configuration is such that caulking and fixing are performed.

  With the above configuration, the jig 50 is engaged with the two portions of the frame portion 45 of the plate 40 and the concave portion 19 of the tank 10, whereby the frame portion 45 and the opening end portion 11 are aligned. Thereby, the opening end part 11 of the tank 10 is assembled | attached to the plate 40 accurately, and the attachment position precision of the tank 10 can be improved.

  Note that the jig 50 may be used not only when the heat exchanger 1 is manufactured but also when the heat exchanger 1 is serviced.

  The jig 50 is configured to move along the frame portion 45 of the plate 40 and the open end portion 11 of the tank 10.

  With the above configuration, since the opening end 11 of the tank 10 is attached to the plate 40 by the movement of the jig 50, the time required for attachment is shortened.

  Further, the jig 50 includes a support portion 51 that is in sliding contact with the frame portion 45 of the plate 40 and an engagement portion 52 that is in sliding contact with the concave portion 19 of the tank 10.

  With the above configuration, when the jig 50 moves, the reaction force that bends the crimping piece 42 is supported by the two portions of the support portion 51 and the engagement portion 52. Thereby, the shift | offset | difference of the plate 40 with respect to the jig | tool 50 at the time of caulking is suppressed, and the bending process of the caulking piece 42 is performed accurately.

  In addition, the jig 50 further includes a pressing portion 53 that is in sliding contact with the opening end portion 11 (convex portion 18) of the tank 10 to bring the opening end 15 of the tank 10 close to the frame portion 45 of the plate 40.

  With the above configuration, when the jig 50 is moved, the opening end portion 11 pushed by the pushing portion 53 is placed in a predetermined position with respect to the frame portion 45. Thereby, since the open end 11 of the tank 10 is attached to the plate 40 in a state where the seal member 36 is compressed to a specified amount, the sealing performance of the tank 10 is ensured.

  The jig 50 further includes a bending portion 54 that bends the crimping piece 42 by sliding contact with the crimping piece 42 of the plate 40.

  With the above configuration, when the jig 50 moves, the crimping piece 42 pushed by the bending portion 54 is bent. For this reason, the caulking fixation of the opening end part 11 by the caulking piece 42 is performed reliably. Further, when the jig 50 moves, the bending portion 54 continuously bends the caulking piece 42, whereby the time required for caulking and fixing is shortened.

  In addition to the above-described configuration, a mechanism (not shown) for bending the crimping piece 42 may be provided separately from the jig 50.

  By the way, in the conventional heat exchanger mounting process, a plate protruding from the core is placed on and supported by a jig. For this reason, in order to suppress the displacement of the plate with respect to the jig, it is necessary to secure a certain dimension (protrusion width) of the plate protruding from the core.

  On the other hand, in this embodiment, since the jig 50 supports the plate 40 and the tank 10 between them, the jig 40 protrudes from the core 30 even if the dimension (projection width) of the plate 40 is smaller than the conventional one. The displacement of the plate 40 with respect to 50 can be sufficiently suppressed. Therefore, the heat exchanger 1 can reduce the size of the plate 40 and the open end 11 of the tank 10.

  Further, the frame portion 45 of the plate 40 is configured to be joined to the core 30 of the heat exchanger 1.

  With the above configuration, the heat exchanger 1 can be reduced in size because the size of the frame portion 45 of the plate 40 protruding from the core 30 is suppressed.

  In addition, the frame portion 45 of the plate 40 is joined to the core 30, and the accommodation groove 32 that accommodates the opening end portion 11 is formed between the frame portion 45 and the core 30.

  With the above configuration, the frame 45 has an L-shaped cross-sectional shape, and the size of the frame 45 protruding from the core 30 can be kept small. Therefore, the heat exchanger 1 can reduce the size of the plate 40 and the open end 11 of the tank 10.

  The frame portion 45 of the plate 40 is not limited to having an L-shaped cross-sectional shape, and may have an S-shaped cross-sectional shape. In this case, the accommodation groove 32 is formed only by the plate 40 without the core 30.

  The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

  In the present embodiment, the plate 40 is a single member that extends in a frame shape (annular shape) along the open end 11. In addition, the plate 40 may be a member divided into a plurality along the opening end portion 11.

  In the present embodiment, the caulking piece 42 is a member that is plastically deformed along the opening end portion 11. However, the present invention is not limited to this, and the crimping piece 42 may be a member formed in advance so as to extend around the opening end portion 11. In this case, the caulking piece 42 is elastically deformed to engage the hole 43 with the protrusion 17 of the tank 10, thereby performing caulking and fixing.

  In the present embodiment, the tank 10 is a flow path member that forms a flow path. However, the present invention is not limited thereto, and the tank 10 may be a container provided as a container for storing gas or liquid.

  The tank mounting method of the present invention is suitable for a heat exchanger mounted on a vehicle, but is not limited to this and can be applied to other than a heat exchanger.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 10 Tank 11 Open end 15 Open end 19 Recessed part 30 Core (heat exchange part)
32 receiving groove 40 plate 42 crimping piece 45 frame part 50 jig 51 support part 52 engaging part 53 pushing part 54 bending part

Claims (8)

A tank mounting structure for attaching an open end of a tank to a plate,
The plate is
A frame part into which the opening end part fits;
A caulking piece for caulking and fixing the opening end between the frame part,
The open end is
An open end extending opposite the frame portion;
A recess recessed on the opposite side of the opening end,
The tank mounting structure, wherein the recess has a shape that engages with the frame with respect to a jig that aligns the frame and the opening end. The tank mounting structure according to claim 1,
The tank mounting structure, wherein the frame part is joined to a heat exchange part through which a fluid of a heat exchanger flows. The tank mounting structure according to claim 2,
The frame mounting structure is characterized in that a housing groove for housing the open end is formed between the frame portion and the heat exchanging portion. A tank mounting method for attaching an open end of a tank to a plate,
The plate is
A frame part into which the opening end part fits;
A caulking piece for caulking and fixing the opening end between the frame part,
The open end is
An open end extending opposite the frame portion;
A recess recessed on the opposite side of the opening end,
A tank mounting method, wherein caulking and fixing are performed by the caulking piece using a jig that engages with the frame and the recess to align the frame and the opening end. The tank mounting method according to claim 4,
The tank mounting method, wherein the jig moves along the frame portion and the opening end portion. The tank mounting method according to claim 5,
The jig is
A support portion in sliding contact with the frame portion;
An engaging portion slidably contacting the recess,
A tank mounting method characterized by comprising: The tank mounting method according to claim 6,
The said jig is further provided with the press part which slidably contacts the said opening edge part and brings the said opening edge close to the said frame part, The tank attachment method characterized by the above-mentioned. The tank mounting method according to claim 6 or 7,
The said jig is further equipped with the bending part which slidably contacts with the said crimping piece and the crimping fixation by the said crimping piece is performed, The tank attachment method characterized by the above-mentioned.

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