JP2009216151A - Sealing structure and heat exchanger using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing structure capable of fixing a position of a sealing member in the whole directions when assembling the sealing member to a sealed component while restraining tensile stress applied on the sealing member. <P>SOLUTION: When a sealing face of a core plate 81 between the core plate 81 and a tank body 82 is set up to be a first sealing face 814 and a sealing face of the tank body is set up to be a second sealing face, a packing 83 is formed at a shape meandered on the first and second sealing faces, and a wall section 813 extending toward a tank body 82 side is arranged on at least an inner end of an outer end and the inner end in the radial direction of the first sealing face 814. The packing 83 is formed to assemble on the first sealing face 814 by elastically expanding the packing 83, and at least a part of the packing 83 is brought into contact with the wall section 813 by elastic restoration force of the packing 83 itself. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seal structure that seals between two parts to be sealed with a seal member, and a heat exchanger using the same.

  2. Description of the Related Art Conventionally, a packing, which is a seal member, is disposed between two parts to be sealed, and is compressed by the two parts to be sealed, thereby sealing the two parts to be sealed.

Generally, the sealed component has a structure for positioning the packing. For example, a wall portion is provided at a part of the part to be sealed that has a groove for inserting the packing (see, for example, Patent Document 1) or a part of the part to be sealed that faces the radially inner side or the radially outer side of the packing. There is something. There is also a cylinder sealing mechanism that uses the rubber elasticity of the packing to fix the position.
JP 2004-66283 A

  However, the structure described in Patent Document 1 has a problem that the packing is fixed in the horizontal direction and the downward direction, but not fixed in the upward direction. For this reason, when the packing is assembled to the part to be sealed, it is necessary to keep the sealing surface of the packing horizontal so that the packing does not fall off from the part to be sealed.

  In addition, in the case where the position is fixed using the rubber elasticity of the packing, the packing is fixed in all directions, but since the tensile stress is always applied to the packing, there is a problem that the packing is likely to be cracked. .

  In view of the above points, the present invention provides a seal structure capable of fixing the position of a seal member in all directions when the seal member is assembled to a part to be sealed while suppressing tensile stress applied to the seal member. For the purpose.

  In order to achieve the above object, in the invention according to claim 1, of the two parts to be sealed (81, 82), the sealing surface of one of the parts to be sealed (81) is the first sealing surface (814), When the sealing surface of the other sealed part (82) is the second sealing surface (822), the sealing member (83) meanders in the circumferential direction of the first and second sealing surfaces (814, 822). A wall which is formed in a shape and extends toward the other sealed component (82) side at least at the inner end portion of the outer end portion and the inner end portion in the radial direction of the first seal surface (814). The seal member (83) is configured to be assembled to the first seal surface (814) by elastically expanding the seal member (83), and the seal member (83). At least part of the seal It is characterized by being in contact with the wall portion (813) by wood (83) its own elastic restoring force.

  When the seal member (83) is elastically expanded and assembled to one of the parts to be sealed (81), the meandering portion of the seal member (83) is deformed so as to follow the shape of the first seal surface (814). At this time, since the seal member (83) tries to return to the original meandering shape, at least a part of the seal member (83) comes into contact with the wall portion (813) of the part to be sealed (81). The member (83) is fixed in all directions. That is, since the elastic restoring force of the sealing member (83), that is, the force to return to the original meandering shape is applied to the wall portion (813) of one sealed component (81), the first sealing surface ( 814) does not need to be kept horizontal, and the sealing member (83) is placed on one of the sealed parts (81) even when it is vertical or the sealing member (83) is positioned below the first sealing surface (814). Can be fixed to.

  Moreover, according to such a structure, the tensile stress concerning a sealing member (83) can be reduced compared with a cylindrical sealing mechanism. Therefore, the position of the seal member (83) can be fixed in all directions when the seal member (83) is assembled to the sealed component (81) while suppressing the tensile stress applied to the seal member (83). It becomes.

  In addition, the “meandering shape” in the present invention does not mean only a smooth meandering shape formed by a curve, but also means a sharp meandering shape formed by a straight line.

  In the invention according to claim 2, the outer end and the inner end of the first seal surface (814) in the radial direction extend toward the other sealed component (82) side ( 813, 815) are provided, and the radial dimension (H) between the top portion projecting radially outward and the top portion projecting radially inward of the seal member (83) is the first seal surface ( 814) is larger than the distance between the wall portion (815) provided at the outer end portion in the radial direction and the wall portion (813) provided at the inner end portion in the radial direction. .

  According to this, when the seal member (83) is elastically expanded and assembled to one sealed component (81), the top portion protruding radially outward and the top portion protruding radially inward in the seal member (83) Can be reliably brought into contact with the wall portions (813, 815). For this reason, it becomes possible to fix the position of a sealing member (83) more reliably.

  In the invention according to claim 3, the sealing member (83) is formed in a meandering shape with respect to the circumferential direction of the first and second sealing surfaces (814, 822), and the first sealing surface ( 814) A wall portion (815) extending toward the other sealed component (82) side is provided at least on the outer end portion of the outer end portion and the inner end portion in the radial direction, and the seal member (83) is configured to be assembled to the first seal surface (814) by elastically compressing the seal member (83), and at least a part of the seal member (83) is the seal member (83) itself. It is characterized by being in contact with the wall portion (815) by the elastic restoring force.

  When the seal member (83) is elastically compressed and assembled to one of the parts to be sealed (81), the meandering portion of the seal member (83) is deformed so as to follow the shape of the first seal surface (814). At this time, since the seal member (83) tries to return to the original meandering shape, at least a part of the seal member (83) comes into contact with the wall portion (815) of one sealed component (81), thereby sealing the seal member (83). The member (83) is fixed in all directions. That is, since the elastic restoring force of the sealing member (83), that is, the force to return to the original meandering shape is applied to the wall portion (815) of one sealed component (81), the first sealing surface ( 814) does not need to be kept horizontal, and the sealing member (83) is placed on one of the sealed parts (81) even when it is vertical or the sealing member (83) is positioned below the first sealing surface (814). Can be fixed to.

  Moreover, according to such a structure, the tensile stress concerning a sealing member (83) can be reduced compared with a cylindrical sealing mechanism. Therefore, the position of the seal member (83) can be fixed in all directions when the seal member (83) is assembled to the sealed component (81) while suppressing the tensile stress applied to the seal member (83). It becomes.

  The invention according to claim 4 is characterized in that the wall portion (813, 815) is inclined so that an angle (α) made with the first seal surface (814) is smaller than 90 °. Yes.

  Accordingly, a part of the seal member (83) comes into contact with the inclined wall portions (813, 815), so that the seal member (83) is positioned. Therefore, when the seal member (83) is assembled to the part to be sealed (81), the position of the seal member (83) can be more reliably fixed.

  Further, the invention according to claim 5 is characterized in that the wall portion (813, 815) is provided with a concave portion (815a) into which the meandering top portion of the seal member (83) enters.

  According to this, since the seal member (83) is positioned by the meandering top of the seal member (83) entering the recess (815a), the seal member (83) is assembled to the part to be sealed (81). Sometimes, the position of the seal member (83) can be more reliably fixed.

  Further, the invention according to claim 6 is characterized in that the wall (813, 815) is provided with a through hole (815b) into which the meandering top of the seal member (83) enters.

  According to this, since the seal member (83) is positioned by the meandering top of the seal member (83) entering the through hole (815b), the seal member (83) is assembled to the part to be sealed (81). The position of the seal member (83) can be more reliably fixed.

  In the invention according to claim 7, the outer wall portion (815) extending toward the other sealed component (82) side is provided at the outer end portion in the radial direction of the first seal surface (814). An inner wall portion (813) extending toward the other sealed component (82) side is provided at an inner end portion in the radial direction of the first seal surface (814). The member (83) includes an elastically deformable first protrusion (831) protruding toward the outer wall (815) side and an elastically deformable second protrusion protruding toward the inner wall (813). The protrusion (832) is provided, and the radial length of the base (830), which is a portion of the seal member (83) where the first protrusion (831) and the second protrusion (832) are not provided. (L1) is the radial length of the first seal surface (814) L2), the radial length (L1) of the base (830), the radial length (L3) of the first protrusion (831), and the radial length of the second protrusion (832). The total length of (L4) combined is larger than the radial length (L2) of the first seal surface (814), and the seal member (83) has the first and second protrusions (831, 832). ) Is elastically compressed to be assembled to the first seal surface (814), and the first protrusion (831) is formed by the elastic force of the first protrusion (831) itself on the outer wall ( 815), and the second protrusion (832) is in contact with the inner wall (813) by the elastic restoring force of the second protrusion (832) itself.

  When the first and second protrusions (831, 832) are elastically compressed and the seal member (83) is assembled to one of the sealed parts (81), the first and second protrusions (831, 832) are original. Therefore, the end portions of the first and second protrusions (831, 832) abut against the outer wall portion (815) and the inner wall portion (813) of one sealed component (81), respectively. Thus, the position of the seal member (83) is fixed in all directions. That is, the elastic restoring force of the first and second protrusions (831, 832), that is, the original shape is restored to the outer wall portion (815) and the inner wall portion (813) of one sealed component (81). Since the force to be applied is applied, there is no need to keep the first seal surface (814) horizontal, and even when the vertical or seal member (83) is positioned below the first seal surface (814). The sealing member (83) can be fixed to one sealed part (81).

  Moreover, according to such a structure, the tensile stress concerning a sealing member (83) can be reduced compared with a cylindrical sealing mechanism. Therefore, the position of the seal member (83) can be fixed in all directions when the seal member (83) is assembled to the sealed component (81) while suppressing the tensile stress applied to the seal member (83). It becomes.

  The invention according to claim 8 is characterized in that the first protrusions (831) and the second protrusions (832) are alternately arranged in the circumferential direction of the seal member (83).

  According to this, it can suppress that the filling rate of the sealing member (83) in the cross section seen from the circumferential direction of the sealing member (83) becomes large. For this reason, it is possible to prevent an excessive stress from being applied to the seal member (83) when the first and second protrusions (831, 832) are elastically compressed.

  In the invention according to claim 9, at least one of the inner wall portion (813) and the outer wall portion (815) has an angle (α) made with the first seal surface (814) smaller than 90 °. It is characterized by a slope.

  According to this, the seal member (83) is positioned because a part of the seal member (83) comes into contact with at least one of the inclined inner wall portion (813) and outer wall portion (815). Therefore, when the seal member (83) is assembled to the part to be sealed (81), the position of the seal member (83) can be more reliably fixed.

  In the invention according to claim 10, at least one of the inner wall portion (813) and the outer wall portion (815) is provided with a recess (815a) into which a part of the seal member (83) enters. It is characterized by.

  According to this, since the seal member (83) is positioned by the meandering top of the seal member (83) entering the recess (815a), the seal member (83) is assembled to the part to be sealed (81). Sometimes, the position of the seal member (83) can be more reliably fixed.

  In the invention according to claim 11, a through hole (815b) into which a part of the seal member (83) enters is provided in at least one of the inner wall portion (813) and the outer wall portion (815). It is characterized by that.

  According to this, since the seal member (83) is positioned by the meandering top of the seal member (83) entering the through hole (815b), the seal member (83) is assembled to the part to be sealed (81). The position of the seal member (83) can be more reliably fixed.

  The invention according to claim 12 is characterized in that a seal member (83) is arranged over the entire circumference of the first seal surface (814) at the radial center of the first seal surface (814). It is said. According to this, it becomes possible to improve sealing performance.

  Further, as in the invention described in claim 13, a plurality of tubes (2) through which a heat medium flows and tanks (51) arranged at both longitudinal ends of the tubes (2) and communicating with the plurality of tubes (2). 52), and the tank (51, 52) has a core plate (81) to which the tube (2) is joined, and a tank body (82) that constitutes a tank internal space together with the core plate (81). In the heat exchanger configured as described above, the seal structure according to any one of claims 1 to 12 may be used as a seal structure between the core plate (81) and the tank body (82).

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

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
1st Embodiment of this invention is described based on FIGS. In the present embodiment, the present invention is applied to a seal structure between a core plate of a heat exchanger (in this embodiment, a radiator) and a tank body. As is well known, the radiator is connected to a cooling water circuit of a vehicle engine (internal combustion engine), and performs heat dissipation (cooling) of high-temperature engine cooling water that has absorbed heat in the vehicle engine and has risen in temperature.

  FIG. 1 is a front view showing a radiator 1 according to the first embodiment. As shown in FIG. 1, the radiator 1 includes a rectangular parallelepiped core portion 2, and the core portion 2 is configured by alternately laminating a large number of tubes 3 and a large number of fins 4. Hereinafter, the stacking direction of the tubes 3 and the fins 4 is referred to as a tube stacking direction.

  The tube 3 has a passage through which engine coolant flows, and is formed by bending or welding an aluminum alloy plate material into a predetermined shape and then welding or brazing. In the present embodiment, the tube 3 is formed in a flat shape such that its longitudinal direction (hereinafter referred to as “tube longitudinal direction”) coincides with the horizontal direction, and its cross-sectional shape coincides with the air flow direction. ing. The fins 4 are made of an aluminum alloy, and are formed in a corrugated shape, that is, in a wave shape to promote heat exchange between air and cooling water.

  At both ends of the tube 3 in the longitudinal direction of the tube, tanks 51 and 52 extending in a direction substantially orthogonal to the longitudinal direction of the tube and having a space formed therein are disposed. End portions of the tubes 3 in the longitudinal direction of the tubes 3 are inserted into the tube insertion holes 811a (see FIG. 4) and joined to the tanks 51 and 52, and the flow paths of the numerous tubes 3 and the spaces in the tanks 51 and 52 are joined. And communicate with each other.

  One tank 51 distributes and supplies the high-temperature cooling water flowing out from the engine to a large number of tubes 3. The one tank 51 is provided with an inlet pipe 61 connected to the cooling water outlet side of the internal combustion engine via a hose (not shown).

  The other tank 52 collects and collects cooling water cooled by heat exchange with air and drains it toward the engine. The other tank 52 is provided with an outlet pipe 62 connected to the cooling water inlet side of the engine via a hose (not shown).

  Inserts 7 that reinforce the core portion 2 are disposed at both ends of the core portion 2 in the tube stacking direction. The insert 7 is made of an aluminum alloy, extends in a direction parallel to the tube longitudinal direction, and both ends thereof are connected to the tanks 51 and 52.

  2 is an AA cross-sectional view of FIG. 1, FIG. 3 is an enlarged view of a portion B of FIG. 2, and FIG. 4 is an enlarged cross-sectional view of a portion C of FIG. As shown in FIGS. 2 to 4, the tanks 51 and 52 include a core plate 81 into which the tube 3 and the insert 7 are inserted and fixed, a tank body 82 that forms a space in the tanks 51 and 52 together with the core plate 81, and a packing. 83.

  In this embodiment, the core plate 81 is made of an aluminum alloy, the tank body 82 is made of a resin such as glass fiber reinforced nylon 66, and the rubber packing 83 for ensuring the sealing performance is provided with the core plate 81 and the tank body. The tank body 82 is crimped and fixed to the core plate 81 by being plastically deformed so as to press the protruding pieces 816 of the core plate 81 against the tank body 82. The packing 83 corresponds to the sealing member of the present invention, the core plate 81 corresponds to one sealed component, and the tank body 82 corresponds to the other sealed component.

  The core plate 81 has a tube joint surface 811 to which the tube 3 is joined. A number of tube insertion holes 811a into which the tube 3 is inserted and brazed are formed in the tube joining surface 811 along the tube stacking direction. Further, one insert insertion hole 811b into which the insert 7 is inserted and brazed is formed on each end of the tube joining surface 811 in the tube stacking direction.

  An annular groove portion 812 into which the end portion 821 of the tank body 82 and the packing 83 are inserted is formed around the tube joint surface 811. The groove 812 is formed by three surfaces. That is, a wall surface of the inner wall portion 813 that is bent substantially perpendicularly from the outer peripheral portion of the tube joining surface 811 and extends in the tube longitudinal direction, and a first seal surface 814 that is bent substantially vertically from the inner wall portion 813 and extends in the tube stacking direction. A groove portion 812 is formed by the wall surface of the outer wall portion 815 that is bent substantially perpendicularly from the first seal surface 814 and extends in the tube longitudinal direction. A large number of protruding pieces 816 are formed at the end of the outer wall portion 815.

  A second seal surface 822 is formed at the end 821 of the tank body 82. The second seal surface 822 is formed in an annular shape so as to surround the tank internal space. Further, the second seal surface 822 is in contact with the packing 83 and sandwiches the packing 83 together with the first seal surface 814.

  The second seal surface 822 is formed with a protrusion 823 that protrudes toward the packing 83 and is positioned at the center of the second seal surface 822 in the radial direction. The protruding portion 823 stabilizes the position by pressing the packing 83 and compressing it by elastic deformation, and secures an appropriate compression rate.

  FIG. 5 is a perspective view showing the packing 83 in the first embodiment. As shown in FIG. 5, the packing 83 is formed in a meandering shape with respect to the circumferential direction of the first seal surface 814 of the core plate 81 and the second seal surface 822 of the tank body 82. More specifically, the packing 83 has a plurality of meandering portions 830 that are curved and extended in an arc shape in the circumferential direction, and the meandering portions 830 are arranged over the entire circumference of the packing 83.

  The packing 83 is formed in such a size as to be assembled to the first seal surface 814 of the core plate 81 by elastic expansion. The meandering wave height H of the packing 83, that is, the radial dimension between the tops of the adjacent meandering parts 830 in the packing 83 is the radial dimension of the first seal surface 814, that is, the inner wall 813 and the outer wall 815. It is larger than the distance between.

  FIG. 6 is an exploded perspective view showing the packing 83 and the core plate 81 in the first embodiment. As shown in FIG. 6, the packing 83 is assembled to the first seal surface 814 of the core plate 81 in an expanded state, that is, by elastic expansion.

  FIG. 7A is a plan view showing a state in which the packing 83 and the core plate 81 in the first embodiment are viewed from the outside in the tube longitudinal direction, and FIG. 7B is a plan view of the main part of FIG. It is sectional drawing seen from the outer side in a longitudinal direction. In addition, the broken line T in FIG.7 (b) is a virtual line which passes along the radial direction center part of the 1st seal surface 814. FIG.

  As shown in FIGS. 7A and 7B, when the packing 83 is assembled to the first seal surface 814 of the core plate 81, the top of the meandering portion 830 is moved to the inside by the elastic restoring force of the packing 83 itself. The wall 813 and the outer wall 815 are in contact with each other. In addition, a packing 83 exists over the entire circumference of the first seal surface 814 in the center portion in the radial direction of the first seal surface 814.

  As described above, when the packing 83 is elastically expanded and assembled to the groove portion 812 of the core plate 81, the meandering portion 830 of the packing 83 is deformed so as to follow the shape of the first seal surface 814. At this time, since the meandering portion 830 tries to return to the original meandering shape, the top portion of the meandering portion 830 of the packing 83 abuts against the inner wall portion 813 and the outer wall portion 815 of the core plate 81, so that the packing 83 is omnidirectional. In position. That is, since the elastic restoring force of the packing 83, that is, the force to return to the original meandering shape is applied to the inner wall portion 813 and the outer wall portion 815 of the core plate 81, the first seal surface 814 is kept horizontal. There is no need, and the packing 83 can be fixed to the core plate 81 even when it is vertical or when the packing 83 is positioned below the first seal surface 814.

  And according to this embodiment, the tensile stress concerning the packing 83 can be reduced compared with a cylindrical seal mechanism. Therefore, when the packing 83 is assembled to the core plate 81 while suppressing the tensile stress applied to the packing 83, the position of the packing 83 can be fixed in all directions.

  In addition, when the packing 83 is assembled to the core plate 81, the tank body 82 is configured so that the packing 83 exists over the entire circumference of the first seal surface 814 at the radial center portion of the first seal surface 814. The projecting portion 823 and the packing 83 located at the central portion in the radial direction of the second seal surface 822 can be brought into contact over the entire circumference of the packing 83. For this reason, it becomes possible to improve sealing performance.

  Further, the meandering wave height H of the packing 83, that is, the radial dimension between the tops of the adjacent meandering parts 830 in the packing 83, the radial dimension of the first seal surface 814, that is, the inner wall part 813 and the outer wall part 815. When the packing 83 is elastically expanded and assembled to the core plate 81, the inner wall portion of the top portion projecting radially outward and the top portion projecting radially inward of the packing 83 is set. 813 and the outer wall portion 815 can be reliably brought into contact with each other. For this reason, it becomes possible to fix the position of the packing 83 more reliably.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 8A is a plan view showing a state in which the packing 83 and the core plate 81 in the second embodiment are viewed from the outside in the tube longitudinal direction, and FIG. 8B is a cross-sectional view taken along the line DD in FIG. FIG.

  As shown in FIGS. 8A and 8B, the outer wall portion 815 of the core plate 81 is inclined toward the inner wall portion 813. That is, the angle α formed by the outer wall portion 815 and the first seal surface 814 is smaller than 90 °.

  In the present embodiment, the packing 83 is positioned because a part of the packing 83 contacts the inclined outer wall 815. Therefore, when the packing 83 is assembled to the core plate 81, the position of the packing 83 can be more reliably fixed.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 9A is a plan view showing a state in which the packing 83 and the core plate 81 in the third embodiment are viewed from the outside in the tube longitudinal direction, and FIG. 9B is a cross-sectional view taken along line EE in FIG. FIG.

  As shown in FIGS. 9A and 9B, the outer wall portion 815 of the core plate 81 is formed with a concave portion 815 a that is recessed radially outward, that is, toward the side opposite to the inner wall portion 813. The concave portion 815 a is provided over the entire circumference of the outer wall portion 815 so that the top of the meandering portion 830 in the packing 83 enters.

  In this embodiment, since the packing 83 is positioned by the top of the meandering portion 830 of the packing 83 entering the recess 815a, the position of the packing 83 is more reliably fixed when the packing 83 is assembled to the core plate 81. It becomes possible.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 10A is a plan view showing a state in which the packing 83 and the core plate 81 in the fourth embodiment are viewed from the outside in the tube longitudinal direction, and FIG. 10B is a cross-sectional view taken along line FF in FIG. FIG.

  As shown in FIGS. 10A and 10B, a plurality of through holes 815 b are formed in the outer wall portion 815 of the core plate 81. The through hole 815b is configured such that the top of the meandering portion 830 in the packing 83 enters and is exposed to the outside.

  In this embodiment, since the packing 83 is positioned by the top of the meandering portion 830 of the packing 83 entering the through hole 815b, the position of the packing 83 is more reliably fixed when the packing 83 is assembled to the core plate 81. It becomes possible to do.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 11A is a plan view showing a state in which the packing 83 and the core plate 81 in the fifth embodiment are viewed from the outside in the tube longitudinal direction, and FIG. 11B is a GG cross section of FIG. FIG.

  As shown in FIGS. 11A and 11B, the core plate 81 of the present embodiment is bent substantially perpendicularly from the outer periphery of the tube joining surface 811 and extends inward in the tube longitudinal direction. And a first seal surface 814 that is bent substantially perpendicularly from the inner wall portion 813 and extends in the tube stacking direction. A packing 83 is disposed on the first seal surface 814. The packing 83 is formed in such a size that it can be assembled to the first seal surface 814 in a state where the packing 83 is stretched, that is, elastically expanded.

  FIG. 12 is a cross-sectional view of the tanks 51 and 52 in the fifth embodiment viewed from the tube stacking direction. As shown in FIG. 12, in the tanks 51 and 52 of the present embodiment, after the packing 83 is assembled to the first seal surface 814 of the core plate 81, the tank main body 82 is installed, and finally the core plate 81 and the tank main body 82. Is formed by fitting with a fitting member 84. That is, the fitting member 84 is fitted so as to cover the outer peripheral end of the core plate 81, the outer peripheral surface of the packing 83, and the end 821 of the tank main body 82. The fitting member 84 is configured as a separate component from the core plate 81 and the tank main body 82.

  Specifically, the fitting member 84 includes an outer peripheral end portion of the core plate 81, that is, a first cover portion 841 that covers the first seal surface 814 from the inner side in the tube longitudinal direction, an outer peripheral surface of the packing 83, and the tank main body 82. The second cover portion 842 that covers the outer peripheral surface of the end portion 821 and the third cover portion 843 that covers the end portion 821 of the tank body 82 from the outside in the tube longitudinal direction are formed in a substantially U-shaped cross section. Yes.

  As described above, when the packing 83 is elastically expanded and assembled to the first seal surface 814 of the core plate 81, the meandering portion 830 of the packing 83 is deformed so as to follow the shape of the first seal surface 814. At this time, since the meandering portion 830 tries to return to the original meandering shape, the top of the meandering portion 830 of the packing 83 abuts on the inner wall portion 813 of the core plate 81, thereby fixing the packing 83 in all directions. . That is, since the elastic restoring force of the packing 83, that is, the force to return to the original meandering shape is applied to the inner wall portion 813 of the core plate 81, the first seal surface 814 does not need to be kept horizontal, and the vertical Alternatively, the packing 83 can be fixed to the core plate 81 even when the packing 83 is positioned below the first seal surface 814.

  And according to this embodiment, the tensile stress concerning the packing 83 can be reduced compared with a cylindrical seal mechanism. Therefore, when the packing 83 is assembled to the core plate 81 while suppressing the tensile stress applied to the packing 83, the position of the packing 83 can be fixed in all directions.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIGS. FIG. 13A is a plan view showing a state in which the packing 83 and the core plate 81 in the sixth embodiment are viewed from the outside in the tube longitudinal direction, and FIG. 13B is a cross-sectional view taken along the line HH in FIG. FIG.

  As shown in FIGS. 13A and 13B, a packing 83 is disposed on the back surface of the tube joint surface 811 in the core plate 81 of the present embodiment, that is, on the outer peripheral portion of the outer surface of the core plate 81 in the tube longitudinal direction. The first seal surface 814 is formed. Further, an outer wall portion 815 that is bent substantially perpendicularly from the first seal surface 814 and extends outward in the tube longitudinal direction is provided at the outer peripheral end portion of the first seal surface 814. The packing 83 is formed in such a size that it can be assembled to the first seal surface 814 in a state where the packing 83 is elastically compressed.

  FIG. 14 is a cross-sectional view of the tanks 51 and 52 in the sixth embodiment viewed from the tube stacking direction. As shown in FIG. 14, the tanks 51 and 52 of the present embodiment have the outer wall portion of the core plate 81 with the tank body 82 assembled after the packing 83 is assembled to the first seal surface 814 of the core plate 81. The tank body 82 is crimped and fixed to the core plate 81 by plastic deformation so as to press the end of 815 against the tank body 82.

  As described above, when the packing 83 is elastically compressed and assembled to the first seal surface 814 of the core plate 81, the meandering portion 830 of the packing 83 is deformed so as to follow the shape of the first seal surface 814. At this time, since the meandering portion 830 tries to return to the original meandering shape, the top of the meandering portion 830 of the packing 83 abuts on the outer wall portion 815 of the core plate 81, thereby fixing the packing 83 in all directions. . That is, since the elastic restoring force of the packing 83, that is, the force to return to the original meandering shape is applied to the outer wall portion 815 of the core plate 81, it is not necessary to keep the first seal surface 814 horizontal, and Alternatively, the packing 83 can be fixed to the core plate 81 even when the packing 83 is positioned below the first seal surface 814.

  And according to this embodiment, the tensile stress concerning the packing 83 can be reduced compared with a cylindrical seal mechanism. Therefore, when the packing 83 is assembled to the core plate 81 while suppressing the tensile stress applied to the packing 83, the position of the packing 83 can be fixed in all directions.

(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 15A is an enlarged view showing a state in which the packing 83 in the seventh embodiment is viewed from the outside in the tube longitudinal direction, and FIG. 15B is an assembly of the packing 83 of FIG. It is a top view which shows the state.

  As shown in FIGS. 15A and 15B, the packing 83 of this embodiment is formed in an annular shape. Also, the packing 83 is integrally formed with a plurality of first protrusions 831 protruding toward the outer wall 815 and a plurality of second protrusions 832 protruding toward the inner wall 813. Yes. In the present embodiment, the first protrusion 831 and the second protrusion 832 are arranged in series in the radial direction of the packing 83.

  A radial length L1 of a portion of the packing 83 where the first and second protrusions 831 and 832 are not provided (hereinafter referred to as a base 830) is greater than a radial length L2 of the first seal surface 814 of the core plate 81. It is getting smaller. The total length of the radial length L1 of the base 830, the radial length L3 of the first protrusion 831, and the radial length L4 of the second protrusion 832 is the radial length of the first seal surface 814. It is larger than L2. That is, the packing 83 is partially larger than the radial length of the first seal surface 814.

  As shown in FIG. 15B, the packing 83 is assembled to the first seal surface 814 of the core plate 81 by elastically compressing the first protrusion 831 and the second protrusion 832. At this time, the first protrusion 831 is in contact with the outer wall 815 by its own elastic restoring force, and the second protrusion 832 is in contact with the inner wall 813 by its own elastic restoring force. Yes.

  As described above, when the first and second protrusions 831 and 832 are elastically compressed and the packing 83 is assembled to the core plate 81, the first and second protrusions 831 and 832 try to return to their original shapes. Therefore, the end portions of the first and second projecting portions 831 and 832 come into contact with the outer wall portion 815 and the inner wall portion 813 of the core plate 81, respectively, whereby the packing 83 is fixed in all directions. That is, the outer wall portion 815 and the inner wall portion 813 of the core plate 81 are subjected to the elastic restoring force of the first and second protrusions 831 and 832, that is, the force to return to the original shape. It is not necessary to keep the seal surface 814 horizontal, and the packing 83 can be fixed to the core plate 81 even when the seal surface 814 is vertical or the packing 83 is positioned below the first seal surface 814.

  And in this embodiment, the tensile stress concerning the packing 83 can be reduced compared with a cylindrical seal mechanism. Therefore, when the packing 83 is assembled to the core plate 81 while suppressing the tensile stress applied to the packing 83, the position of the packing 83 can be fixed in all directions.

(Eighth embodiment)
Next, an eighth embodiment of the present invention will be described with reference to FIG. 16A is an enlarged view showing a state in which the packing 83 in the eighth embodiment is viewed from the outside in the tube longitudinal direction, and FIG. 16B is an assembly of the packing 83 in FIG. It is a top view which shows the state.

  As shown in FIGS. 16A and 16B, the first protrusions 831 and the second protrusions 832 are alternately arranged in the circumferential direction of the packing 83, that is, arranged in series in the radial direction of the packing 83. It has not been.

  Thereby, it can suppress that the filling rate of the packing 83 in the cross section (for example, II cross section of FIG.16 (b)) seen from the circumferential direction of the packing 83 becomes large. For this reason, it is possible to prevent an excessive stress from being applied to the packing 83 when the first and second protrusions 831 and 832 are elastically compressed.

(Other embodiments)
In addition, in the said 1st-6th embodiment, although the smooth meander-like meandering part 830 formed with a curve is provided over the perimeter of the packing 83, it is not restricted to this. For example, the meandering portion 830 may be provided only in a part of the packing 83 as shown in FIG. 17A, or the meandering portion 830 is formed by a straight line as shown in FIG. It may be pointed.

  In the second embodiment, the example in which the angle α formed between the outer wall portion 815 of the core plate 81 and the first seal surface 814 is smaller than 90 ° has been described. The angle α formed with the first seal surface 814 may be smaller than 90 °, and the angle α formed with the first seal surface 814 in both the inner wall portion 813 and the outer wall portion 815 may be smaller than 90 °. .

  Moreover, although the said 3rd Embodiment demonstrated the example which formed the recessed part 815a recessed toward the radial direction outer side in the outer side wall part 815 of the core plate 81, not only this but a radial inner side in the inner wall part 813 A recessed portion that is recessed toward the inner surface may be formed, or a recessed portion may be formed in each of the inner wall portion 813 and the outer wall portion 815.

  Moreover, although the said 4th Embodiment demonstrated the example which formed the through-hole 815b in the outer side wall part 815 of the core plate 81, not only this but a through-hole may be formed in the inner wall part 813, A through hole may be formed in each of the inner wall portion 813 and the outer wall portion 815.

  In each of the above embodiments, the example in which the heat exchanger according to the present invention is applied to the radiator 1 has been described. However, the present invention is not limited thereto, and is applied to various heat exchangers such as a condenser, a heater core unit, and an evaporator. Also good. In this case, a heat medium other than engine cooling water may be used.

  In each of the above embodiments, the present invention is applied to the seal structure between the core plate 81 and the tank body 82 of the heat exchanger. However, the present invention has a seal structure in which two sealed parts are sealed by a seal member. Can be widely applied.

  Moreover, you may combine each said embodiment suitably in the possible range besides the above-mentioned range.

It is a front view showing radiator 1 concerning a 1st embodiment. It is AA sectional drawing of FIG. It is the B section enlarged view of FIG. It is the C section expanded sectional view of FIG. It is a perspective view which shows the packing 83 in 1st Embodiment. It is a disassembled perspective view which shows the packing 83 and the core plate 81 in 1st Embodiment. (A) is a top view which shows the state which looked at the packing 83 and the core plate 81 in 1st Embodiment from the outer side in a tube longitudinal direction, (b) looked at the principal part of (a) from the outer side in the tube longitudinal direction. It is sectional drawing. (A) is a top view which shows the state which looked at the packing 83 and the core plate 81 in 2nd Embodiment from the outer side in the tube longitudinal direction, (b) is DD sectional drawing of (a). (A) is a top view which shows the state which looked at the packing 83 and the core plate 81 in 3rd Embodiment from the outer side in the tube longitudinal direction, (b) is EE sectional drawing of (a). (A) is a top view which shows the state which looked at the packing 83 and the core plate 81 in 4th Embodiment from the outer side in the tube longitudinal direction, (b) is FF sectional drawing of (a). (A) is a top view which shows the state which looked at the packing 83 and the core plate 81 in 5th Embodiment from the outer side in the tube longitudinal direction, (b) is FF sectional drawing of (a). It is sectional drawing which looked at the tanks 51 and 52 in 5th Embodiment from the tube lamination direction. (A) is a top view which shows the state which looked at the packing 83 and the core plate 81 in 6th Embodiment from the outer side in the tube longitudinal direction, (b) is GG sectional drawing of (a). It is sectional drawing which looked at the tanks 51 and 52 in 6th Embodiment from the tube lamination direction. (A) is an enlarged view which shows the state which looked at the packing 83 in 7th Embodiment from the outer side in the tube longitudinal direction, (b) is a top view which shows the state which assembled | attached the packing 83 of (a) to the core plate 81. is there. (A) is an enlarged view which shows the state which looked at the packing 83 in 8th Embodiment from the outer side in the tube longitudinal direction, (b) is a top view which shows the state which assembled | attached the packing 83 of (a) to the core plate 81. is there. It is a top view which shows the packing 83 in other embodiment.

Explanation of symbols

2 Tube 51, 52 Tank 81 Core plate (sealed parts)
82 Tank body (sealed parts)
83 Packing (seal member)
813 Inner wall portion 814 First seal surface 815 Outer wall portion 815a Recess 815b Through hole 822 Second seal surface 831 First protrusion 832 Second protrusion

Claims (13)

Two sealed parts (81, 82) and an elastically deformable annular seal member (83) disposed between the two sealed parts (81, 82),
The two parts to be sealed (81, 82) respectively have annular sealing surfaces (814, 822) with which the sealing member (83) abuts.
The seal member (83) is a seal structure that seals between the two parts to be sealed (81, 82) by being compressed by the sealing surfaces (814, 822) of the parts to be sealed (81, 82). And
Of the two sealed components (81, 82), the sealing surface of one sealed component (81) is defined as a first sealing surface (814), and the sealing surface of the other sealed component (82) is defined as a first sealing surface. When two sealing surfaces (822) are used,
The sealing member (83) is formed in a meandering shape with respect to the circumferential direction of the first and second sealing surfaces (814, 822),
A wall portion (813) extending toward the other sealed component (82) side is provided at least on the inner end portion of the outer end portion and the inner end portion in the radial direction of the first seal surface (814). Provided,
The seal member (83) is configured to be assembled to the first seal surface (814) by elastically expanding the seal member (83).
At least a part of the seal member (83) is in contact with the wall (813) by the elastic restoring force of the seal member (83) itself. Wall portions (813, 815) extending toward the other sealed component (82) are provided on the outer end portion and the inner end portion in the radial direction of the first seal surface (814), respectively. And
A radial dimension (H) between a top portion projecting radially outward in the seal member (83) and a top portion projecting radially inward is an outer end portion in the radial direction of the first seal surface (814). 2. The seal according to claim 1, wherein the seal is larger than a distance between the wall portion (815) provided in the wall and the wall portion (813) provided at the inner end portion in the radial direction. Construction. Two sealed parts (81, 82) and an elastically deformable annular seal member (83) disposed between the two sealed parts (81, 82),
The two parts to be sealed (81, 82) respectively have annular sealing surfaces (814, 822) with which the sealing member (83) abuts.
The seal member (83) is a seal structure that seals between the two parts to be sealed (81, 82) by being compressed by the sealing surfaces (814, 822) of the parts to be sealed (81, 82). And
Of the two sealed components (81, 82), the sealing surface of one sealed component (81) is defined as a first sealing surface (814), and the sealing surface of the other sealed component (82) is defined as a first sealing surface. When two sealing surfaces (822) are used,
The sealing member (83) is formed in a meandering shape with respect to the circumferential direction of the first and second sealing surfaces (814, 822),
A wall portion (815) extending toward the other sealed component (82) is provided at least on the outer end portion of the outer end portion and the inner end portion in the radial direction of the first seal surface (814). Provided,
The seal member (83) is configured to be assembled to the first seal surface (814) by elastically compressing the seal member (83).
At least a part of the seal member (83) is in contact with the wall (815) by the elastic restoring force of the seal member (83) itself.   The wall (813, 815) is inclined so that an angle (α) made with the first seal surface (814) is smaller than 90 °. The seal structure according to one.   The seal according to any one of claims 1 to 4, wherein the wall (813, 815) is provided with a recess (815a) into which a part of the seal member (83) enters. Construction.   6. The wall portion (813, 815) is provided with a through hole (815b) into which a part of the seal member (83) enters, according to any one of claims 1 to 5. Seal structure. Two sealed parts (81, 82) and an elastically deformable annular seal member (83) disposed between the two sealed parts (81, 82),
The two parts to be sealed (81, 82) respectively have annular sealing surfaces (814, 822) with which the sealing member (83) abuts.
The seal member (83) is a seal structure that seals between the two parts to be sealed (81, 82) by being compressed by the sealing surfaces (814, 822) of the parts to be sealed (81, 82). And
Of the two sealed components (81, 82), the sealing surface of one sealed component (81) is defined as a first sealing surface (814), and the sealing surface of the other sealed component (82) is defined as a first sealing surface. When two sealing surfaces (822) are used,
An outer wall (815) extending toward the other sealed part (82) side is provided at the outer end in the radial direction of the first seal surface (814),
An inner wall portion (813) extending toward the other sealed component (82) side is provided at an inner end portion in the radial direction of the first seal surface (814),
The seal member (83) has an elastically deformable first protrusion (831) protruding toward the outer wall (815) and an elastic deformation protruding toward the inner wall (813). A possible second protrusion (832),
The radial length (L1) of the base (830), which is a portion where the first protrusion (831) and the second protrusion (832) are not provided in the seal member (83), is the first length. It is smaller than the radial length (L2) of the sealing surface (814),
The radial length (L1) of the base (830), the radial length (L3) of the first protrusion (831), and the radial length (L4) of the second protrusion (832) are combined. The total length is greater than the radial length (L2) of the first seal surface (814),
The seal member (83) is configured to be assembled to the first seal surface (814) by elastically compressing the first and second protrusions (831, 832),
The first protrusion (831) is in contact with the outer wall (815) by the elastic restoring force of the first protrusion (831) itself,
The seal structure, wherein the second protrusion (832) is in contact with the inner wall (813) by the elastic restoring force of the second protrusion (832) itself.   The seal structure according to claim 7, wherein the first protrusions (831) and the second protrusions (832) are alternately arranged in a circumferential direction of the seal member (83).   At least one of the inner wall portion (813) and the outer wall portion (815) is inclined so that an angle (α) made with the first seal surface (814) is smaller than 90 °. The seal structure according to any one of claims 7 and 8.   The at least one of the inner wall (813) and the outer wall (815) is provided with a recess (815a) into which a part of the seal member (83) enters. The seal structure according to any one of 9.   The through-hole (815b) into which a part of the seal member (83) enters is provided in at least one of the inner wall portion (813) and the outer wall portion (815). 11. The seal structure according to any one of 10 to 10.   12. The seal member (83) according to claim 1, wherein the seal member (83) is disposed over the entire circumference of the first seal surface (814) at a radial center portion of the first seal surface (814). The seal structure according to any one of the above. A plurality of tubes (2) through which the heat medium flows;
Tanks (51, 52) disposed at both longitudinal ends of the tube (2) and communicating with the plurality of tubes (2),
The tank (51, 52) includes a core plate (81) to which the tube (2) is joined, and a tank body (82) that forms a space in the tank together with the core plate (81). A heat exchanger,
The heat exchanger characterized by using the sealing structure as described in any one of Claim 1 thru | or 12 for the sealing structure of the said core plate (81) and the said tank main body (82).

Images