JP4665706B2 - Cooling module - Google Patents

Description

  The present invention relates to a cooling module in which a heat exchanger and a shroud are fastened by a plurality of fastening portions.

  Conventionally, heat exchangers such as automobile radiators and condensers have been individually mounted on the vehicle body via elastic bodies.

In recent years, a method of assembling a heat exchanger and parts around the front of the vehicle body to form a module and mounting them on the vehicle body has been devised and becoming mainstream. Among them, there is a cooling module in which a plurality of heat exchangers and a shroud are integrally assembled, and various structures have been devised (for example, see Patent Document 1).
JP 2003-278545 A

  However, in general, the heat exchanger is made of aluminum and the shroud is made of resin. In the case of a cooling module having a structure in which the heat exchanger is mechanically fastened to the shroud at a plurality of locations, during the thermal expansion, between the fastening portions. Therefore, distortion due to the difference in expansion between the heat exchanger and the shroud may occur, and an excessive load load may be generated in the heat exchanger. If repeated distortion occurs, the life of the heat exchanger may be reduced.

  In view of the above points, an object of the present invention is to suppress a reduction in the life of a heat exchanger due to thermal strain in a cooling module in which a heat exchanger and a shroud are fastened by a plurality of fastening portions.

In order to achieve the above object, according to the first aspect of the present invention, a heat exchanger (200, 300) that heat-exchanges the heat medium and outside air to cool the heat medium, and a heat exchanger (200, 300) are provided. A cooling module including a shroud (100) for guiding an air flow passing therethrough, wherein the heat exchanger (200, 300) and the shroud (100) are fastened by a plurality of fastening portions. The shroud (100) is a heat exchanger. (200, 300) a back plate portion (121) covering the downstream surface of the air flow, and a bottom plate portion on which the heat exchanger (200, 300) is mounted extending from the lower end of the back plate portion (121) in the air flow direction. (122) and a, between the plurality of fastening portions on the shroud (100), modified to allow the dimensional change between the plurality of fastening portions on the shroud (100) and easily deformed than other portions (121a, 122a) includes a deformation portion (121a, 122a) is a convex shape, characterized in that it is continuously formed in the bottom plate portion back plate portion (121) (122).

  According to this, when a deformation | transformation part deform | transforms with the dimension change of a heat exchanger, the dimension between the fastening parts in a shroud changes. That is, the deformation of the deformable portion can absorb the strain due to the difference in expansion between the heat exchanger and the shroud, so that the stress generated in the heat exchanger is reduced, and the lifetime reduction of the heat exchanger due to the thermal strain can be suppressed. it can.

  By the way, the shroud is required to have strength and rigidity capable of stably holding the heat exchanger even when subjected to vehicle body vibration. However, since the deformed portion reduces the vertical rigidity of the bottom plate portion, the bottom plate portion is easily deformed when subjected to vehicle body vibration, and it becomes difficult to stably hold the heat exchanger.

On the other hand, in the invention according to claim 1 , since the convex deformed portion is continuously formed on the back plate portion and the bottom plate portion to improve the vertical rigidity of the bottom plate portion, the heat exchanger In addition, the heat exchanger can be stably held while absorbing the strain due to the expansion difference of the shroud.

In the invention described in claim 2, in the cooling module according to claim 1, deformable portion (121a, 122a) is characterized by an arc-shaped. According to this, in the case of a circular arc shape, stress concentration is difficult to occur at the time of deformation, so that the deformed portion is not easily damaged by fatigue.

In the invention according to claim 3 , the heat exchanger (200, 300) for exchanging heat between the heat medium and the outside air to cool the heat medium, and the air flow passing through the heat exchanger (200, 300) are guided. In a cooling module comprising a shroud (100), wherein the heat exchanger (200, 300) and the shroud (100) are fastened by a plurality of fastening portions, other parts are provided between the fastening portions of the shroud (100). It is characterized by having a thin part (121c, 122c) whose thickness is thinner than that.

  According to this, the dimension between the fastening parts in the shroud changes as the thin part expands and contracts with the change in dimension of the heat exchanger. That is, since the strain due to the expansion difference between the heat exchanger and the shroud can be absorbed by the expansion and contraction of the thin-walled portion, the stress generated in the heat exchanger is reduced, and the lifetime reduction of the heat exchanger due to thermal strain is suppressed. it can.

In the invention according to claim 4 , in the cooling module according to claim 3 , the shroud (100) includes a back plate (121) that covers a surface of the heat exchanger (200, 300) on the downstream side of the air flow, A thin plate portion (121c, 122c) is formed, a bottom plate portion (122) on which a heat exchanger (200, 300) is mounted extending from the lower end of the back plate portion (121) in the air flow direction, and a back plate portion ( 121) and a rib (124) continuously formed on the bottom plate portion (122).

  By the way, since the thin wall portion reduces the vertical rigidity of the bottom plate portion, the bottom plate portion is easily deformed when subjected to vehicle body vibration, and it becomes difficult to stably hold the heat exchanger.

On the other hand, in the invention described in claim 4 , since the rigidity in the vertical direction of the bottom plate portion is improved by the rib, the heat exchanger is stabilized while absorbing the strain due to the expansion difference between the heat exchanger and the shroud. Can be held.

In the invention according to claim 5 , the heat exchanger (200, 300) for exchanging heat between the heat medium and the outside air to cool the heat medium, and the air flow passing through the heat exchanger (200, 300) are guided. The cooling module includes a shroud (100), and the heat exchanger (200, 300) and the shroud (100) are fastened by a plurality of fastening portions. The shroud (100) is air in the heat exchanger (200, 300). A back plate (121) that covers the downstream surface of the flow, and an outer plate (122) that extends from the outer peripheral edge of the back plate (121) in the air flow direction and covers the outer periphery of the heat exchanger (200, 300). The plurality of fastening portions are provided in the outer peripheral plate portion (122), and the first notches (125) are formed between the plurality of fastening portions in the outer peripheral plate portion (122).

  According to this, since the shroud (100) can be easily deformed and can absorb a larger strain than the case where the deforming portion is provided as in the invention described in claim 1, the heat exchanger (200, 300) is reduced, and the lifetime reduction of the heat exchanger (200, 300) due to thermal strain can be suppressed.

According to a sixth aspect of the present invention, in the cooling module according to the fifth aspect , the second notch (126) connected to the first notch (125) is formed in the back plate (121). Features.

  According to this, the back plate part (121) can be easily deformed, and accordingly, the shroud (100) can be more easily deformed, and the lifetime reduction of the heat exchanger (200, 300) due to thermal strain is reliably suppressed. can do.

In the invention according to claim 7 , in the cooling module according to claim 6 , when the direction connecting the two fastening portions is the direction between the fastening portions, the first notch (125) between the two fastening portions and The same number of second notches (126) are formed, and the width (L2) between fastening portions in the second notch (126) is larger than the width (L1) between fastening portions in the first notch (125). It is wide.

  According to this, the back plate portion (121) can be more easily deformed, and accordingly, the shroud (100) can be more easily deformed, and the lifetime reduction of the heat exchanger (200, 300) due to thermal strain is further ensured. Can be suppressed.

In the invention according to claim 8 , in the cooling module according to claim 6 or 7 , when the direction connecting the two fastening parts is the direction between the fastening parts, the second notch (126) is the direction between the fastening parts. It has the straight part (126c) extended in this, It is characterized by the above-mentioned.

  According to this, stress concentration at the second notch (126) can be avoided, and the durability of the back plate (121) can be improved.

According to a ninth aspect of the present invention, in the cooling module according to any one of the sixth to eighth aspects, the second notch (126) is defined when a direction connecting the two fastening portions is a direction between the fastening portions. Has curved portions (126a, 126b) at both ends in the direction between the fastening portions, and of the two curved portions of the second notch (126), the curved portion (126a) closer to the fastening portion is the other curved portion. The radius of curvature is larger than that of the portion (126b).

  According to this, the stress of the curved portion (126a) on the side where the amount of deformation becomes large can be reduced, and the durability of the back plate portion (121) can be improved.

In the invention according to claim 10 , in the cooling module according to claim 5 , the first notch (125) is provided between the two fastening portions when the direction connecting the two fastening portions is the direction between the fastening portions. The outer peripheral plate part (122) separated by the first notch (125) is connected by the plate (130), and includes a plate (130) that is formed and covers the first notch (125). The outer peripheral plate portion (122) and the plate (130) are connected in a state in which relative movement in the direction between the fastening portions is possible.

As shown in FIG. 8, when a plurality of first cutouts (125) are formed between two fastening portions, the outer peripheral plate portion (122y) located between the first cutouts (125) vibrates, etc. There is a risk of flapping. On the other hand, in the invention according to claim 10 , there is one first notch (125) formed between the two fastening portions, and the outer peripheral plate portion located between the first notches (125) is Since it does not exist, fluttering of the outer peripheral plate portion due to vibration of the vehicle body does not occur.

  In addition, since the two outer peripheral plate portions (122) separated by the first notch (125) are connected by the plate (130), the two outer peripheral plate portions (122) are twisted and become uneven. Is prevented.

  Furthermore, since the first notch (125) is covered with the plate (130), it is possible to prevent the escape of running wind from the first notch (125) and the inflow of hot air from around the engine while the vehicle is stopped. .

According to an eleventh aspect of the present invention, in the cooling module according to the tenth aspect , the second notch (126) connected to the first notch (125) is formed in the back plate (121), and the second notch The notch (126) is covered with the plate (130).

Thus, the same effect as that attained by the 6th aspect can be attained. Further, since the second notch (126) is covered with the plate (130), it is possible to prevent the escape of traveling wind from the second notch (126) and the inflow of hot air from around the engine while the vehicle is stopped. .

In the invention according to claim 12 , in the cooling module according to claim 10 or 11 , the plate (130) is formed with a long hole (131a) extending in the direction between the fastening portions, and the outer peripheral plate portion (122) is And a fitting member (127, 141) fitted into the long hole (131a).

  According to this, an outer peripheral board part (122) and a plate (130) can be connected in the state in which the relative movement of a fastening part direction is possible.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
A first embodiment of the present invention will be described. 1 is an exploded perspective view of the cooling module according to the first embodiment, FIG. 2 is a perspective view of the shroud of FIG. 1, FIG. 3 is a cross-sectional view taken along line XX of FIG. 2, and FIG. FIG. 5 is a view of the main part of the cooling module of FIG. 1 viewed from the upstream side of the air flow, and FIG. 6 is a cross-sectional view taken along line YY of FIG.

  The cooling module of this embodiment is for vehicles, and this cooling module is usually mounted on the front end of the vehicle.

  As shown in FIGS. 1 and 2, the cooling module includes a radiator 200 that cools the cooling water by exchanging heat between cooling water and outside air of an engine (internal combustion engine) (not shown), and a vehicle refrigeration cycle (air conditioner) (not shown). The condenser 300 that cools the refrigerant by exchanging heat between the refrigerant circulating inside and the outside air, the radiator 200, the electric blower 400 that blows cooling air to the condenser 300, and the electric blower 400 are held, and are also induced by the electric blower 400. A shroud 100 is provided to guide the air flow such that the air flow flows to the radiator 200 and the condenser 300.

  Incidentally, the capacitor 300 is disposed on the upstream side of the air flow from the radiator 200, in other words, on the front side of the vehicle. In addition, the radiator 200 and the capacitor | condenser 300 are corresponded to the heat exchanger of this invention. The cooling water and the refrigerant correspond to the heat medium of the present invention.

  The shroud 100 is made of resin (for example, polypropylene containing glass fiber), and is divided into an upper shroud portion 110 and a lower shroud portion 120.

  Upper shroud portion 110 extends in the vehicle width direction (left-right direction), top plate portion 111 that covers the upper end surfaces of radiator 200 and capacitor 300, and extends downward from both ends of top plate portion 111. And an upper side plate portion 112 that covers the side surface in the vehicle width direction. Also, through holes (not shown) into which the bolts 500 are inserted are formed in the vicinity of both ends in the vehicle width direction of the top plate portion 111.

  The lower shroud portion 120 extends in the vehicle width direction and the up-down direction, covers the air flow downstream surface of the radiator 200, and the air flow upstream side from the lower end of the back plate portion 121 (in this example, the vehicle A bottom plate portion 122 on which the radiator 200 and the capacitor 300 are mounted, and a lower side plate portion 123 that extends upward from both ends of the bottom plate portion 122 and covers the side surfaces of the radiator 200 and the capacitor 300 in the vehicle width direction. have. In addition, through holes (not shown) into which the bolts 500 are inserted are formed near both ends of the bottom plate portion 122 in the vehicle width direction.

  The shroud 100 is configured to cover the radiator 200 and the capacitor 300 by combining the upper shroud portion 110 and the lower shroud portion 120 from above and below.

  The radiator 200 is entirely made of metal (for example, made of an aluminum alloy), and includes a plurality of tubes 210 in which cooling water flows in the horizontal direction, and first tubes that are disposed at both ends of the tubes 210 and communicate with the tubes 210. A header tank 220 and a second header tank 230 are provided. In addition, the upper and lower end portions 221, 222, 231, 232 of the header tanks 220, 230 are formed with female screws (not shown) into which the bolts 500 are screwed.

  Capacitor 300 is entirely made of metal (for example, aluminum alloy), and includes a plurality of tubes 310 in which a refrigerant flows in a horizontal direction, and a first header that is disposed at both ends of tubes 310 and communicates with tubes 310. A tank 320 and a second header tank 330 are provided. The header tanks 320 and 330 have upper and lower ends 321, 322, 331, and 332 formed with female screws (not shown) to which the bolts 500 are screwed.

  Then, the bolts 500 are inserted into the through holes of the shroud 100 and screwed into the female screws of the radiator 200 and the capacitor 300, so that the radiator 200 and the capacitor 300 are attached to the top plate portion 111 and the bottom plate portion 122 of the shroud 100. It is concluded. Note that the through hole of the shroud 100 and the internal thread of the radiator 200 and the capacitor 300 correspond to the fastening portion of the present invention.

  As shown in FIGS. 3 to 6, the bottom plate portion 122 of the lower shroud portion 120 of the shroud 100 is formed with a deformable portion 122 a that can be easily bent and deformed. The deforming portion 122a is a convex shape that protrudes from the reference surface portion 122b of the bottom plate portion 122, more specifically has an arc shape, and extends in the air flow direction. In addition, the deformable portion 122a is disposed at a plurality of locations (two locations in this example) between the two fastening portions of the bottom plate portion 122. Incidentally, the thickness of the deforming part 122a and the reference surface part 122b is made equal. The direction of the line connecting the two fastening portions in the bottom plate portion 122 coincides with the longitudinal direction of the tube 210 of the radiator 200 and the longitudinal direction of the tube 310 of the capacitor 300.

  A deformable portion 121 a that can be easily bent and deformed is also formed on the back plate portion 121 of the lower shroud portion 120 of the shroud 100. The deforming portion 121a has a convex shape, more specifically an arc shape, and extends in the vertical direction.

  And the deformation | transformation part 122a of the baseplate part 122 and the deformation | transformation part 121a of the backplate part 121 are formed in the shape connected in L shape.

  In the above configuration, when the shroud 100, the radiator 200, and the capacitor 300 are thermally expanded in a state where the radiator 200 and the capacitor 300 are fastened to the shroud 100, distortion due to a difference in expansion occurs because the respective materials are different. Incidentally, in the radiator 200 and the capacitor 300, the longitudinal dimensions of the tubes 210 and 310 mainly change.

  Then, as the dimensions of the radiator 200 and the condenser 300 in the tube longitudinal direction are changed, the deformed portions 121a and 122a are deformed, whereby the size between the two fastening portions in the bottom plate portion 122 is changed. That is, the deformation due to the expansion difference between the radiator 200 and the capacitor 300 and the shroud 100 is absorbed by the deformation of the deformation portions 121a and 122a.

  According to the present embodiment, when the shroud 100, the radiator 200, and the capacitor 300 are thermally expanded, distortion due to the expansion difference between the radiator 200, the capacitor 300, and the shroud 100 can be absorbed by the deformation of the deformation portions 121a and 122a. The stress generated in the radiator 200 and the capacitor 300 is reduced, and the lifetime reduction of the radiator 200 and the capacitor 300 due to thermal strain can be suppressed.

  In addition, the convex deformation parts 121a and 122a are formed continuously from the back plate part 121 and the bottom plate part 122 to improve the vertical rigidity of the bottom plate part 122. The radiator 200 and the capacitor 300 can be stably held.

  Further, since the deformed portions 121a and 122a are arc-shaped and stress is not easily concentrated at the time of deformation, the deformable portions 121a and 122a are not easily damaged by fatigue.

(Second Embodiment)
A second embodiment of the present invention will be described. FIG. 7 is a perspective view of a main part of the shroud in the cooling module according to the second embodiment. In addition, the same code | symbol is attached | subjected to the same or equivalent part as 1st Embodiment, and the description is abbreviate | omitted.

  In the present embodiment, the deformed portions 121a and 122a in the first embodiment are eliminated, and a rib and a thin portion are provided instead.

  As shown in FIG. 7, the bottom plate portion 122 of the lower shroud portion 120 is formed with a thin portion 122c that is thinner than the reference surface portion 122b and can be easily expanded and contracted. The thin portion 122c is disposed between the two fastening portions in the bottom plate portion 122. Further, a thin portion 121 c is also formed on the back plate portion 121 in the lower shroud portion 120.

  A plurality (three in this example) of L-shaped ribs 124 protruding from the back plate 121 and the bottom plate 122 are formed in the vicinity of the thin portions 121c and 122c in the back plate 121 and the bottom plate 122. . The ribs 124 are integrally formed with the lower shroud portion 120 and are continuously formed from the back plate portion 121 to the bottom plate portion 122.

  According to the present embodiment, when the shroud 100, the radiator 200, and the capacitor 300 are thermally expanded, the distortion due to the expansion difference between the radiator 200, the capacitor 300, and the shroud 100 can be absorbed by the expansion and contraction of the thin portions 121c, 122c. The stress generated in the radiator 200 and the capacitor 300 is reduced, and the lifetime reduction of the radiator 200 and the capacitor 300 due to thermal strain can be suppressed.

  Further, since the rib 124 improves the vertical rigidity of the bottom plate portion 122, the radiator 200 and the capacitor 300 can be stably held even when subjected to vehicle body vibration.

(Third embodiment)
A third embodiment of the present invention will be described. FIG. 8 is a perspective view of the shroud in the cooling module according to the third embodiment. In addition, the same code | symbol is attached | subjected to the same or equivalent part as 1st Embodiment, and the description is abbreviate | omitted.

  In the present embodiment, the deformed portions 121a and 122a in the first embodiment are abolished, and cutouts are provided in the back plate portion 121 and the bottom plate portion 122 instead.

  As shown in FIG. 8, two first cutouts 125 are formed in the bottom plate portion 122 corresponding to the outer peripheral plate portion. The first notch 125 is disposed between the two fastening portions in the bottom plate portion 122. Therefore, the bottom plate part 122 is separated into an end bottom plate part 122x provided on both sides and provided with a fastening part, and an intermediate bottom plate part 122y located between the two end bottom plate parts 122x.

  Further, a second notch 126 that is continuous with the first notch 125 is formed in the back plate 121 of the lower shroud part 120. Hereinafter, the second notch 126 will be described in detail. 9 is a sectional view taken along the line ZZ in FIG. 8, FIG. 10 is an enlarged view of a portion B in FIG. 8, and FIG. 11 is an enlarged view of a portion C in FIG.

  As shown in FIGS. 9 to 11, the width L <b> 2 of the second notch 126 in the direction connecting the two fastening portions (hereinafter referred to as the fastening portion direction) is the width of the fastening portion in the first notch 125. It is wider than the width L1. The second notch 126 has curved portions 126a and 126b at both ends in the direction between the fastening portions, and the curvature radius of the first curved portion 126a on the side closer to the fastening portion of the two curved portions 126a and 126b is: It is larger than the radius of curvature of the other curved portion 126b. Further, the two curved portions 126a and 126b of the second notch 126 are connected by a straight portion 126c extending in the direction between the fastening portions.

  In the above configuration, when the shroud 100, the radiator 200, and the condenser 300 are thermally expanded in a state where the radiator 200 (see FIG. 1) and the condenser 300 (see FIG. 1) are fastened to the shroud 100, the tubes of the radiator 200 and the condenser 300 are used. As the longitudinal dimension changes, the shroud 100 is deformed, and the dimension between the two fastening portions in the bottom plate portion 122 changes, thereby absorbing the distortion due to the difference in expansion between the radiator 200 and the capacitor 300 and the shroud 100. Is done.

  When the first notch 125 is provided as in the present embodiment, the shroud 100 can be more easily deformed than when the deformed portions 121a and 122a and the thin portions 121c and 122c are provided as in the above embodiments. Since a large strain can be absorbed, the stress generated in the radiator 200 and the capacitor 300 is reduced, and the lifetime reduction of the radiator 200 and the capacitor 300 due to the thermal strain can be suppressed.

  Further, by providing the second notch 126, the back plate portion 121 can be easily deformed, and accordingly, the entire shroud 100 can be more easily deformed, and the lifetime of the radiator 200 and the capacitor 300 is reduced due to thermal strain. It can be surely suppressed.

  Further, since the width L2 between the fastening portions in the second notch 126 is wider than the width L1 in the direction between the fastening portions in the first notch 125, the back plate 121 can be more easily deformed, Accordingly, the entire shroud 100 can be more easily deformed, and the lifetime reduction of the radiator 200 and the capacitor 300 due to thermal strain can be more reliably suppressed.

  When the second cutout 126 does not have the straight portion 126c, that is, when the two curved portions 126a and 126b are directly connected, the two curved portions 126a, Stress concentrates on the connection part 126b. On the other hand, as in this embodiment, by providing the straight portion 126c between the two curved portions 126a and 126b, stress concentration when the back plate 121 is deformed is avoided, and the durability of the back plate 126 is improved. Can be improved.

  Further, the first curved portion 126a on the side closer to the fastening portion has a larger radius of curvature than the other curved portion 126b. According to this, it is possible to reduce the stress of the first curved portion 126a on the side where the deformation amount increases, and to improve the durability of the back plate portion 121.

(Fourth embodiment)
A fourth embodiment of the present invention will be described. FIG. 12 is a perspective view of a main part of the shroud in the cooling module according to the fourth embodiment. In addition, the same code | symbol is attached | subjected to the same or equivalent part as 3rd Embodiment, and the description is abbreviate | omitted.

  In the third embodiment, the width L2 between the fastening portions in the second notch 126 is wider than the width L1 in the direction between the fastening portions in the first notch 125. However, as shown in FIG. The width L2 between the fastening portions in the notch 126 may be equal to the width L1 in the direction between the fastening portions in the first notch 125.

(Fifth embodiment)
A fifth embodiment of the present invention will be described. FIG. 13 is an exploded perspective view of the main part of the shroud in the cooling module according to the fifth embodiment, and FIG. 14 is a cross-sectional view showing a fitting portion between the lower shroud portion and the plate in FIG. In addition, the same code | symbol is attached | subjected to the same or equivalent part as 3rd Embodiment, and the description is abbreviate | omitted.

  In the present embodiment, the intermediate bottom plate portion 122y in the third embodiment is deleted, and a plate 130 formed separately from the lower shroud portion 120 is provided instead of the intermediate bottom plate portion 122y.

  As shown in FIGS. 13 and 14, the bottom plate portion 122 has one first notch 125 between two fastening portions. Thereby, the baseplate part 122 is isolate | separated into the two edge part baseplate parts 122x in which the fastening part was provided. A snap fit 127 corresponding to a fitting member is integrally formed on the bottom surface of the end bottom plate portion 122x (that is, the lower side in the drawing of FIG. 14). Incidentally, the snap fit 127 is to fasten and fix two members so as to be detachable by utilizing elastic deformation of a protrusion formed in a key shape. Two back cutouts 126 are formed in the back plate 121 at positions shifted in the direction between the fastening portions.

  The plate 130 is made of resin and has a bottom 131 that covers the first notch 125. Two bottom holes 131 a extending in the direction between the fastening portions are formed in the bottom portion 131. The plate 130 includes two cover pieces 132 that cover the second cutout 126, and two engagement pieces 133 that cooperate with the cover piece 132 and sandwich the back plate 121. The cover piece 132 and the engagement piece 133 are formed integrally with the bottom portion 131.

  Then, by arranging the plate 130 on the bottom surface side (that is, outside) of the end bottom plate portion 122x and fitting the snap fit 127 into the elongated hole 131a, the bottom portion 131 covers the first notch 125, and In a state where the cover piece 132 covers the second cutout 126, the two end bottom plate portions 122 x are connected by the plate 130.

  In the above configuration, when the shroud 100, the radiator 200, and the condenser 300 are thermally expanded in a state where the radiator 200 (see FIG. 1) and the condenser 300 (see FIG. 1) are fastened to the shroud 100, the tubes of the radiator 200 and the condenser 300 are used. As the longitudinal dimension changes, the back plate 121 and the bottom plate 122 in the shroud 100 are deformed, and the dimension between the two fastening portions in the bottom plate 122 changes, and accordingly, the radiator 200 and the capacitor 300 Strain due to the expansion difference of the shroud 100 is absorbed.

  In this embodiment, since the snap fit 127 is fitted in the elongated hole 131a and the two end bottom plate portions 122x are connected by the plate 130, the two end bottom plate portions 122x and the plate 130 are fastening portions. Relative movement in the middle direction is possible. Therefore, the plate 130 does not hinder the deformation of the back plate portion 121 and the bottom plate portion 122.

  Further, when the intermediate bottom plate portion 122y is provided as in the third embodiment, the intermediate bottom plate portion 122y may flutter due to body vibration or the like, but in the present embodiment, the intermediate bottom plate portion 122y does not exist. No flapping occurs.

  Further, since the two end bottom plate portions 122x separated by the first notch 125 are connected by the plate 130, the shroud 100 is prevented from being twisted and the two end bottom plate portions 122x are prevented from being stepped. The

  Furthermore, since the first notch 125 and the second notch 126 are covered with the plate 130, the running wind escapes from the first notch 125 and the second notch 126 and the hot air circulates from the periphery of the engine when the vehicle is stopped. Can be prevented.

(Sixth embodiment)
A sixth embodiment of the present invention will be described. FIG. 15 is a cross-sectional view showing a fitting portion between a lower shroud portion and a plate in a cooling module according to a sixth embodiment. In addition, the same code | symbol is attached | subjected to the same or equivalent part as 5th Embodiment, and the description is abbreviate | omitted.

  In the fifth embodiment, the elongated hole 131a and the snap fit 127 are fitted and the two end bottom plate portions 122x are connected by the plate 130. However, in this embodiment, a bolt is used instead of the snap fit 127.

  As shown in FIG. 15, the nut 140 is integrated with the end bottom plate portion 122x by insert molding. A bolt 141 and a collar 142 constituting a fitting member are inserted into the elongated hole 131 a of the plate 130, and the collar 142 is sandwiched between the bolt 141 and the nut 140 by screwing the bolt 141 to the nut 140. ing.

  The collar 142 is made of resin, and includes a cylindrical portion 142a into which the bolt 141 is inserted, and a flange 142b that extends radially outward from one end of the cylindrical portion 142a. The outer diameter of the cylindrical portion 142a is set larger than the shorter diameter of the elongated hole 131a, the axial length of the cylindrical portion 142a is set larger than the plate thickness of the plate 130, and the outer diameter of the flange 142b is longer than the elongated hole. It is set larger than the minor axis of 131a. As a result, a gap is formed between the cylindrical portion 142a and the long hole 131a, and the end bottom plate portion 122x and the plate 130 are connected while a gap is formed between the end bottom plate portion 122x and the plate 130. Thus, the two end bottom plate portions 122x and the plate 130 can be relatively moved in the direction between the fastening portions.

(Seventh embodiment)
A seventh embodiment of the present invention will be described. FIG. 16 is an exploded perspective view of the main part of the shroud in the cooling module according to the seventh embodiment. In addition, the same code | symbol is attached | subjected to the same or equivalent part as 5th Embodiment, and the description is abbreviate | omitted.

  In the fifth embodiment, the plate 130 is disposed on the bottom surface side (that is, the outside) of the end bottom plate portion 122x. However, as shown in FIG. 16, snap fitting is performed on the top surface side (that is, the inside) of the end bottom plate portion 122x. 127 and the plate 130 may be disposed on the upper surface side of the end bottom plate portion 122x.

  According to this, the site | part which protrudes outside the edge part baseplate part 122x can be eliminated. The vehicle body is provided with a mounting pin (not shown) to be inserted into the shroud 100, but interference between the mounting pin and the snap fit 127 and the plate 130 can be avoided.

(Other embodiments)
In the said 1st Embodiment, although the deformation | transformation parts 121a and 122a were made into circular arc shape, the deformation | transformation parts 121a and 122a should just be a shape which can be bent and deformed easily, for example, are good also as a rectangular cross section.

  Moreover, in each said embodiment, although the deformation | transformation part 121a, 122a, the thin part 121c, 122c, and the 1st, 2nd notch 125, 126 were formed only in the lower shroud part 120, they are made into the upper shroud part 110. And may be formed on both the lower shroud portion 120.

  Moreover, in each said embodiment, although the shroud 100 was divided | segmented and shape | molded into the upper side shroud part 110 and the lower side shroud part 120, the shroud 100 may be integrally molded.

  Moreover, although the radiator showed the example where the tube was arrange | positioned in the horizontal direction, in the radiator with which the tube was arrange | positioned at the up-down direction, deformation | transformation part 121a, 122a, thin part 121c, 122c, and 1st, 2nd notch Even if 125 and 126 are provided on the side surfaces of the shroud 100 (that is, both ends in the horizontal direction), the distortion reduction effect is the same.

It is a disassembled perspective view of the cooling module which concerns on 1st Embodiment of this invention. It is a perspective view of the shroud of FIG. It is sectional drawing which follows the XX line of FIG. It is an expansion perspective view of the A section of FIG. It is the figure which looked at the principal part of the cooling module of FIG. 1 from the air flow upstream side. It is sectional drawing which follows the YY line of FIG. It is a perspective view of the principal part of the shroud in the cooling module which concerns on 2nd Embodiment of this invention. It is a perspective view of the shroud in the cooling module which concerns on 3rd Embodiment of this invention. It is sectional drawing which follows the ZZ line | wire of FIG. It is an enlarged view of the B section of FIG. It is an enlarged view of the C section of FIG. It is a perspective view of the principal part of the shroud in the cooling module which concerns on 4th Embodiment of this invention. It is a disassembled perspective view of the principal part of the shroud in the cooling module which concerns on 5th Embodiment of this invention. It is sectional drawing which shows the fitting part of the lower shroud part of FIG. 13, and a plate. It is sectional drawing which shows the fitting part of the lower shroud part and plate in the cooling module which concerns on 6th Embodiment of this invention. It is a disassembled perspective view of the principal part of the shroud in the cooling module which concerns on 7th Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Shroud, 121a, 122a ... Deformation part, 200 ... Radiator (heat exchanger), 300 ... Condenser (heat exchanger).

Claims (12)

A heat exchanger (200, 300) for exchanging heat between the heat medium and outside air to cool the heat medium, and a shroud (100) for guiding an air flow passing through the heat exchanger (200, 300), In the cooling module in which the heat exchanger (200, 300) and the shroud (100) are fastened by a plurality of fastening portions,
The shroud (100) extends in the air flow direction from a back plate (121) that covers a surface of the heat exchanger (200, 300) on the downstream side of the air flow, and a lower end of the back plate (121). A bottom plate (122) on which the heat exchanger (200, 300) is placed,
Deformed portions (121a, 122a) between the plurality of fastening portions in the shroud (100) that are more easily deformed than other portions and allow a dimensional change between the plurality of fastening portions in the shroud (100). Prepared,
The cooling module according to claim 1, wherein the deformable portions (121a, 122a) have a convex shape and are continuously formed on the back plate portion (121) and the bottom plate portion (122). The cooling module according to claim 1 , wherein the deformable portions (121 a, 122 a) have an arc shape. A heat exchanger (200, 300) for exchanging heat between the heat medium and outside air to cool the heat medium, and a shroud (100) for guiding an air flow passing through the heat exchanger (200, 300), In the cooling module in which the heat exchanger (200, 300) and the shroud (100) are fastened by a plurality of fastening portions,
A cooling module comprising thin portions (121c, 122c) having a smaller thickness than other portions between the plurality of fastening portions in the shroud (100). The shroud (100) includes a back plate (121) that covers a surface on the downstream side of the air flow in the heat exchanger (200, 300), and a thin portion (121c, 122c), and the back plate A bottom plate portion (122) on which the heat exchanger (200, 300) is mounted extending in the air flow direction from the lower end of the portion (121), the back plate portion (121), and the bottom plate portion (122). Cooling module according to claim 3 , characterized in that it comprises a formed rib (124). A heat exchanger (200, 300) for exchanging heat between the heat medium and outside air to cool the heat medium, and a shroud (100) for guiding an air flow passing through the heat exchanger (200, 300), In the cooling module in which the heat exchanger (200, 300) and the shroud (100) are fastened by a plurality of fastening portions,
The shroud (100) extends in the air flow direction from a back plate (121) that covers a surface of the heat exchanger (200, 300) on the downstream side of the air flow, and an outer peripheral edge of the back plate (121). And an outer peripheral plate portion (122) covering the outer periphery of the heat exchanger (200, 300),
The plurality of fastening portions are provided on the outer peripheral plate portion (122),
A cooling module, wherein a first cutout (125) is formed between the plurality of fastening portions in the outer peripheral plate portion (122). The cooling module according to claim 5 , wherein a second cutout (126) connected to the first cutout (125) is formed in the back plate portion (121). When the direction connecting the two fastening parts is the fastening part direction,
The same number of the first notches (125) and the second notches (126) are formed between the two fastening portions,
The width (L2) between the fastening portions in the second notch (126) is wider than the width (L1) between the fastening portions in the first notch (125). 6. The cooling module according to 6 . The said 2nd notch (126) has a straight part (126c) extended in the direction between the said fastening parts, when the direction which connects between the two said fastening parts is made into the direction between fastening parts, The Claim 6 characterized by the above-mentioned. 8. The cooling module according to 7 . When the direction connecting the two fastening parts is the fastening part direction,
The second notch (126) has curved portions (126a, 126b) at both ends in the direction between the fastening portions,
Of the two curved portions of the second notch (126), the curved portion (126a) closer to the fastening portion has a larger radius of curvature than the other curved portion (126b). The cooling module according to any one of 6 to 8 . When the direction connecting the two fastening parts is the fastening part direction,
One of the first notches (125) is formed between the two fastening portions,
A plate (130) covering the first notch (125);
The outer peripheral plate portion (122) separated by the first cutout (125) is connected by the plate (130),
The cooling module according to claim 5 , wherein the outer peripheral plate portion (122) and the plate (130) are connected in a state in which relative movement in the direction between the fastening portions is possible. A second notch (126) connected to the first notch (125) is formed in the back plate (121),
The cooling module according to claim 10 , wherein the second notch (126) is covered with the plate (130). The plate (130) is formed with a long hole (131a) extending in the direction between the fastening portions,
The cooling module according to claim 10 or 11 , wherein the outer peripheral plate portion (122) includes fitting members (127, 141) fitted into the elongated holes (131a).

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