JP2011057016A - Heat exchanger fixing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance assembling workability by suppressing increase of the number of parts and not requiring the work using a tool when a heat exchanger is fixed to a casing in a state where it is stored from a storage hole. <P>SOLUTION: The casing 12 includes the storage hole 52 for storing the heat exchanger 11; and a fixing plate part 41 for fixing the heat exchanger 11 stored in the storage hole 52. The fixing plate part 41 is integrally molded to the casing 12 so as to be switched to a fixing position where the heat exchanger 11 is pressed/fixed from an outer side of the storage hole 52 of the casing 12 and a retreating position where it is retreated from the storage hole 52. On the fixing plate part 41, an engagement part 41a engaged with the casing 12 when it is positioned at the fixing position is formed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a heat exchanger fixing structure for fixing a heat exchanger accommodated in a casing.

  Conventionally, for example, a vehicle air conditioner has been provided with a heat exchanger and a casing that houses the heat exchanger, and the temperature of the air-conditioning air introduced into the casing is adjusted by the heat exchanger to each part of the passenger compartment. It is comprised so that it may supply (for example, refer patent document 1).

  The casing of Patent Document 1 has a housing hole for housing the heat exchanger, and further includes a member for pressing and fixing the heat exchanger housed in the casing from the housing hole from the outside of the housing hole. It is attached with a screw.

JP 2000-6646 A

  However, as in Patent Document 1, when the member for fixing the heat exchanger is constituted by a member different from the casing and is screwed, the number of parts increases and a work using a tool is required. Therefore, there is a problem that the assembly work becomes complicated.

  The present invention has been made in view of such points, and the object of the present invention is to suppress an increase in the number of components when fixing the heat exchanger in a state of being accommodated in the casing from the accommodation hole, and An object of the present invention is to make it possible to improve the assembly workability by eliminating the use of a tool.

  1st invention is equipped with the heat exchanger and the casing which accommodates this heat exchanger, The temperature for the air-conditioning air introduce | transduced into this casing is temperature-controlled with the said heat exchanger, and is supplied to each part of a vehicle interior In the heat exchanger fixing structure provided in the air conditioner, the casing includes an accommodation hole for accommodating the heat exchanger, and a fixing portion for fixing the heat exchanger accommodated in the accommodation hole, The fixing portion is integrally formed with the casing so as to be switchable between a fixing position for pressing and fixing the heat exchanger from the outside of the housing hole of the casing and a retracted position retracted from the housing hole. Is provided with an engaging portion that engages with the casing when in the fixed position.

  According to this configuration, the heat exchanger can be accommodated in the casing through the accommodation hole by setting the fixing portion at the retracted position. And a heat exchanger is fixed to a casing by a fixed part by switching a fixed part to a fixed position. Since the engaging portion engages with the casing and is held at the fixing position, the fixing portion in the fixing position can be fixed to the heat exchanger without screwing. Moreover, since the fixing portion is integrally formed with the casing, an increase in the number of parts due to provision of the fixing structure is suppressed.

  According to a second invention, in the first invention, the fixing portion is integrally formed with the casing through a thin hinge for switching between a fixing position and a retracted position.

  According to this configuration, it is possible to easily switch between the fixed position and the retracted position by rotating the fixing portion around the axis of the thin hinge.

  In a third aspect based on the second aspect, the first and second engaged portions are provided at the peripheral portion of the accommodation hole in the casing, and the first engaged portion and the second engaged portion engage with the engaging portion of the fixing portion. The joint portion is positioned so as to engage with the engaging portion in a state where the fixing portion is rotated around the thin hinge to be in the fixing position, and the second engaged portion is the first engaged portion. It is positioned away from the portion in the circumferential direction of the accommodation hole.

  According to this configuration, the engaging portion engages with the first engaged portion when the fixing portion rotates around the thin hinge and reaches the fixing position. During maintenance of the heat exchanger or the like, the engaging portion of the fixed portion is removed from the first engaged portion, and at this time, the first engaged portion may be damaged. When the first engaged portion is damaged, the fixing portion is separated from the casing, and the engaging portion is engaged with the second engaged portion located away from the first engaged portion, thereby fixing. It becomes possible to fix the heat exchanger by reusing the part.

  A fourth invention is characterized in that, in any one of the first to third inventions, the fixed part is provided with a guide part for guiding the heat exchanger to the accommodation hole when in the retracted position. To do.

  According to this configuration, when the heat exchanger is accommodated in the accommodation hole, the heat exchanger can be guided to the accommodation hole by the guide portion of the fixed portion.

  According to a fifth invention, in any one of the first to fourth inventions, the fixed portion is provided with a plurality of contact portions that contact the heat exchanger when spaced apart from each other at the fixed position. It is characterized by this.

  According to this structure, since the some contact part provided mutually spaced apart contact | abuts a heat exchanger, the heat exchanger in a fixed state is stabilized.

  According to a sixth invention, in any one of the first to fifth inventions, a cover that covers a pipe connected to the heat exchanger is integrally formed on the fixed portion, and the cover has the fixed portion at a fixed position. In some cases, the fixing portion is positioned so as to be separated from the piping when the fixing portion is in the retracted position.

  According to this structure, piping is covered with a cover by making a fixing | fixed part into a fixing position. On the other hand, the cover is separated from the pipe by switching the fixing portion to the retracted position.

  According to the first invention, the fixing portion for fixing the heat exchanger is integrally formed with the casing so that the fixing portion can be switched between the fixing position and the retracted position, and the increase in the number of parts is suppressed. Since the engaging portion to be engaged is formed on the fixed portion and the work using the tool can be made unnecessary, the assembling workability can be improved.

  According to the second invention, since the fixed portion is integrally formed with the casing via the thin hinge, the position of the fixed portion can be easily switched, and the assembly workability can be further improved. .

  According to the third invention, when the engaging portion of the fixed portion engaged with the first engaged portion of the casing is removed from the first engaged portion for maintenance or the like, the first engaged portion is Even if damaged, the heat exchanger can be fixed by reusing the fixing part by separating the fixing part from the casing and engaging the engaging part with the second engaged part, which is required for maintenance and the like. Cost can be reduced.

  According to the fourth invention, since the heat exchanger can be guided to the accommodation hole by the guide portion of the fixed portion, the workability at the time of housing the heat exchanger can be further improved.

  According to the fifth aspect of the invention, the plurality of abutting portions provided at intervals can be brought into contact with the heat exchanger, so that the heat exchanger can be stabilized.

  According to the sixth invention, the pipe can be covered with the cover when the fixing portion is in the fixing position, and when the fixing portion is in the retracted position, the cover is separated from the pipe and obstructs the attachment / detachment of the heat exchanger. It can be avoided.

It is a left view of the vehicle air conditioner concerning an embodiment. It is a longitudinal cross-sectional view of an air conditioner. It is a perspective view which expands and shows the heater core accommodating part vicinity of the casing in the state which has a fixed board part in a fixing position. FIG. 4 is a view corresponding to FIG. 3 in a state where the fixed plate portion is in a molding position. It is sectional drawing in the VV line of FIG. FIG. 6 is a view corresponding to FIG. 5 in a state where the fixed plate portion is in a molding position. FIG. 4 is a view corresponding to FIG. 3 when the fixed plate portion is reused. FIG. 6 is a diagram corresponding to FIG. 5 according to Modification 1; FIG. 9 is a view corresponding to FIG. 3 according to Modification 2. FIG. 9 is a view corresponding to FIG. 4 according to Modification 2. It is sectional drawing in the XI-XI line of FIG. FIG. 12 is a diagram corresponding to FIG. 11 according to Modification 3. It is a perspective view which expands and shows the heater core accommodating part vicinity of a casing concerning the modification 4. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature and is not intended to limit the present invention, its application, or its use.

  FIG. 1 shows a vehicle air conditioner 1 to which a heat exchanger fixing structure according to an embodiment of the present invention is applied. The air conditioner 1 is disposed in a passenger compartment (not shown) of an automobile. In the description of this embodiment, for convenience of explanation, the front side of the vehicle is simply referred to as “front”, the rear side of the vehicle is simply referred to as “rear”, the left side of the vehicle is simply referred to as “left”, and the right side of the vehicle is referred to. Is simply called “right”.

  The air conditioner 1 includes an air conditioning unit 3 configured to adjust the temperature of air blown from a blower (not shown) and blow the air to each part of the passenger compartment. The air conditioning unit 3 and the blower are disposed inside an instrument panel (not shown) at the front end of the passenger compartment. The air conditioning unit 3 is positioned at a substantially central portion in the left-right direction inside the instrument panel, and the blower is positioned on the left side (in front of the passenger seat). The blower and the air conditioning unit 3 are connected by an intermediate duct 4.

  As shown in FIG. 2, the air conditioning unit 3 includes an evaporator 10, a heater core (heat exchanger) 11, and a casing 12 that accommodates these. An air mix damper 13, a defroster damper 14, a vent damper 15 and a heat damper 16 are disposed in the casing 12.

  The casing 12 is formed by molding a resin material, and is configured by combining members divided in the left-right direction. An air passage R through which air blown from the blower flows is formed inside the casing 12. The upstream end of the air passage R is located at the front end of the casing 12 and communicates with the air inlet 20 formed in the left side wall of the casing 12. The air inlet 20 has a rectangular shape that is long in the vertical direction.

  The air passage R extends toward the rear side as a whole. The air passage R includes a cold air passage R1, a hot air passage R2, an air mix space R3, a defroster outlet passage R4, a vent outlet passage R5, and a heat outlet passage R6.

  The evaporator 10 is disposed in the cold air passage R1 so as to cross the air flow. The evaporator 10 is a cooling heat exchanger for cooling air, and is a well-known component that constitutes one element of a refrigeration cycle. Although not shown, the evaporator 10 is a tube-and-fin type heat exchanger having a pair of header tanks, a plurality of tubes extending so as to connect the header tanks, and fins disposed between the tubes. . The entire amount of air introduced into the casing 12 passes through the evaporator 10.

  The air passage surface of the evaporator 10 extends substantially vertically along the longitudinal direction of the air inlet 20. That is, the evaporator 10 is arrange | positioned so that a header tank may be located in an upper end part and a lower end part, respectively.

  As shown in FIG. 1, the base ends of the refrigerant pipes 10 a and 10 a are connected to the header tank located at the upper end of the evaporator 10. Refrigerant (heat exchange medium) is supplied to and discharged from the evaporator 10 via the refrigerant pipes 10a and 10a. Note that the base ends of the refrigerant pipes 10a and 10a may be connected to, for example, the center of the evaporator 10 in the vertical direction, and are not limited to the upper end of the evaporator 10.

  An evaporator accommodating hole 48 (shown only in FIG. 1) is formed in the left side wall of the casing 12 so as to be adjacent to the rear side of the air inlet 20. The evaporator 10 is accommodated in the casing 12 through the evaporator accommodation hole 48. The evaporator accommodating hole 48 is closed by a part of the intermediate duct 4. The refrigerant pipes 10 a and 10 a are accommodated in the intermediate duct 4.

  As shown in FIG. 3, a protruding plate 22 is formed on the bottom wall portion of the casing 12 so as to protrude upward from the rear side portion of the evaporator 10 into the casing 12. A drain portion 21 (shown in FIG. 1) for draining condensed water generated on the surface of the evaporator 10 is formed on the front side of the protruding plate 22.

  A portion on the rear side of the protruding plate 22 of the casing 12 is the hot air passage R2. An upstream opening 23 is formed on the upper side of the protruding plate 22 to allow the hot air passage R2 and the cold air passage R1 to communicate with each other. The rear side of the projecting plate 22 of the bottom wall portion of the casing 12 bulges so as to be positioned below the front side. The warm air passage R2 extends downward from the upstream opening 23, and then curves and extends upward.

  The heater core 11 is disposed in the warm air passage R2 so as to cross the air flow. The heater core 11 is a heating heat exchanger for heating air. Like the evaporator 10, the heater core 11 is disposed between a pair of header tanks 11b (shown in FIG. 3), a plurality of tubes (not shown) extending to connect the header tanks 11b, and the tubes. It is a tube and fin type heat exchanger provided with fins (not shown). The air passage surface of the heater core 11 extends so as to be located on the rear side as it goes upward. Moreover, the heater core 11 is arrange | positioned so that the header tank 11b may be located in the left end part and the right end part, respectively.

  A support portion 24 for holding the upper end portion of the heater core 11 is formed at the upper end portion of the protruding plate 22. The support portion 24 is formed in a plate shape extending rearward from the upstream opening 23.

  As shown in FIG. 3, the header tank 11b located at the left end of the heater core 11 is connected to the base ends of the heater pipes 11a and 11a, and the engine cooling water is supplied and discharged through the heater pipes 11a and 11a. It has come to be. The base ends of the heater pipes 11a and 11a are arranged at intervals in the vertical direction.

  As shown also in FIG. 1, a heater core accommodation hole 52 is formed in the left side wall of the casing 12 at a position away from the evaporator accommodation hole 48 to the rear side. The heater core housing hole 52 is formed to be long in the vertical direction, and extends so as to be positioned so as to move upward as it goes upward corresponding to the inclination angle of the heater core 11. The upper end portion of the heater core accommodation hole 52 is located at a substantially central portion in the vertical direction of the casing 12 and is lower than the upper end portion of the evaporator accommodation hole 48. The lower end portion of the heater core accommodation hole 52 is located near the bottom wall portion of the casing 12. The heater pipes 11a and 11a protrude out of the casing 12 through the heater core housing hole 52.

  As shown in FIG. 3, a peripheral wall portion 40 that protrudes outward of the casing 12 is formed at the peripheral edge portion of the heater core accommodation hole 52 of the casing 12. The peripheral wall portion 40 is continuous over the entire circumference of the heater core accommodation hole 52.

  A fixed plate portion 41 for fixing the heater core 11 accommodated in the casing 12 from the heater core accommodating hole 52 to the casing 12 is integrally formed on the peripheral wall portion 40 through a thin hinge 42. The thin hinge 42 is for switching the position of the fixed plate portion 41, and is formed at one edge portion extending in the longitudinal direction of the heater core housing hole 52 at the front end in the protruding direction of the peripheral wall portion 40, and includes two heaters It is located so that it may correspond between piping 11a and 11a. The direction in which the thin hinge 42 extends (the hinge axis direction) substantially coincides with the longitudinal direction of the heater core accommodation hole 52.

  The fixed plate portion 41 has a substantially rectangular shape extending across the heater core housing hole 52 in the short diameter direction, and the base end portion is integrated with the thin hinge 42. As shown in FIG. 4, two ribs (contact portions) 43 and 43 are formed on the inner surface of the casing 12 that is the back surface of the fixed plate portion 41. The ribs 43 and 43 extend linearly from the vicinity of the base end portion of the fixed plate portion 41 to the vicinity of the tip end portion, and have the same shape. The ribs 43 and 43 extend substantially in parallel with a space therebetween. The number of ribs 43 may be three or more, or may be one.

  An upper claw portion (first engaged portion) 40 a is formed at an edge portion of the peripheral wall portion 40 that faces the thin hinge 42 at the front end in the protruding direction. The upper claw portion 40 a is formed so as to protrude inward of the peripheral wall portion 40. As shown in FIG. 5, the engaging part 41a comprised by the front-end | tip edge part of the stationary plate part 41 engages with the upper nail | claw part 40a.

A first lower claw portion (second engaged portion) 40b is formed below the upper claw portion 40a at the front end in the protruding direction of the peripheral wall portion 40, and below the thin hinge 42, A second lower claw portion 40c is formed. The first and second lower claw portions 40b and 40c are located below the heater pipe 11a . The second lower claw portion 40c is opposed to the first lower claw portion 40b.

  As shown in FIG. 7, the first lower claw portion 40 b is engaged with an engaging portion 41 a of a fixed plate portion 41 that is once detached from the casing 12 (details will be described later). . In addition, the base end edge portion of the fixed plate portion 41 that has been similarly detached is engaged with the second lower claw portion 40c. By engaging the fixed plate portion 41 with the first and second lower claw portions 40b, 40c, the tips of the ribs 43, 43 of the fixed plate portion 41 come into pressure contact with the outer surface of the header tank 11b of the heater core 11. Yes.

  The fixed plate portion 41 rotates around the axis of the thin hinge 42 and is switched to three positions: a fixed position, a retracted position, and a molding position. As shown in FIG. 3, the fixing position is a position where the heater core 11 is pressed and fixed from the outside of the heater core accommodation hole 52 of the casing 12. When the fixed plate portion 41 is in the fixed position, the heater core housing hole 52 is crossed in the minor diameter direction so as to cover a part of the header tank 11b of the heater core 11. At this time, the engaging portion 41a engages with the upper claw portion 40a, and as shown in FIG. 5, the protruding ends of the ribs 43, 43 are in pressure contact with the outer surface of the header tank 11b. It is pressed from the outside and fixed.

  The retracted position is a position where the fixed plate portion 41 is retracted from the heater core accommodation hole 52 as indicated by a virtual line in FIGS. 4 and 6. When in this position, the fixed plate portion 41 does not overlap the opening of the heater core accommodation hole 52 in plan view of the heater core accommodation hole 52.

  The molding position is a position immediately after the fixed plate portion 41 is molded with a molding die and opened as shown by solid lines in FIGS. 4 and 6. When in this position, the extending direction of the ribs 43, 43 and the fixed plate portion 41 is substantially the same as the center line direction of the heater core housing hole 52. That is, the mold moving direction of the mold for forming the heater core housing hole 52 is the center line direction of the heater core housing hole 52, and the mold moving direction and the extending direction of the ribs 43, 43 and the fixing plate portion 41 are substantially coincident. By doing so, the ribs 43 and 43 and the fixed plate portion 41 can be formed without providing a slide mold.

  As shown in FIG. 2, a partition wall 25 is provided above the protruding plate 22 in the casing 12. A portion above the partition wall 25 in the casing 12 is an air mix space R3. On the front side of the partition wall 25, a cold air outlet 26 communicating with the cold air passage R1 is formed. The cold air outlet 26 has substantially the same shape as the upstream opening 23. A hot air outlet 27 is formed on the rear side of the partition wall 25 from the cold air outlet 26.

  The air mix damper 13 is disposed between the protruding plate 22 and the partition wall 25 in the casing 12.

  A defroster duct portion 45 is formed on the upper portion of the casing 12. The defroster duct portion 45 communicates with the upper portion of the air mix space R3 and extends upward to form the defroster outlet passage R4. The defroster damper 14 is disposed at the upstream end of the defroster outlet passage R4. The defroster damper 14 opens and closes the upstream end of the defroster outlet passage R4.

  A vent duct portion 50 is formed at the upper rear side of the casing 12. The vent duct portion 50 communicates with the front portion of the air mix space R3 and extends forward to form the vent outlet passage R5.

  A heat duct portion 55 is formed on the front side of the casing 12. The heat duct portion 55 is for forming the heat blowing passage R6. The inside of the heat duct portion 55 communicates with the air mix space R3.

  A driver seat side front heat opening 55 a is formed in the right side wall on the upstream side of the heat duct portion 55. Further, as shown in FIG. 1, a passenger seat side front heat opening 55 b is formed in the left side wall on the upstream side of the heat duct portion 55. Although not shown, front heat ducts are connected to the driver seat side and passenger seat side front heat openings 55a and 55b, respectively. The heat damper 16 is disposed at the upstream end of the heat blowing passage R6.

  Next, an assembling procedure of the air conditioner 1 configured as described above will be described. First, an air mix damper 13, a defroster damper 14, a vent damper 15 and a heat damper 16 are assembled to the casing 12. Thereafter, the evaporator 10 is housed in the casing 12 through the evaporator housing hole 48.

  Further, the heater core 11 is accommodated in the heater core accommodation hole 52. At this time, as shown by the solid line in FIGS. 4 and 6, the fixed plate portion 41 of the casing 12 is in the molding position, so that the fixed plate portion 41 is rotated around the thin hinge 42 and is shown by the phantom line in the figure. Switch to the retracted position. Accordingly, the fixed plate portion 41 does not overlap the heater core accommodation hole 52 in a plan view of the heater core accommodation hole 52, and the fixed plate portion 41 does not interfere with the accommodation of the heater core 11.

  Thereafter, the heater core 11 is accommodated in the casing 12 through the heater core accommodation hole 52. At this time, since the fixed plate portion 41 does not interfere, it can be accommodated smoothly.

  Thereafter, as shown in FIGS. 3 and 5, the fixed plate portion 41 is rotated around the thin hinge 42 to be switched to the fixed position, and the engaging portion 41a is hooked on the upper claw portion 40a to be engaged. Thereby, the fixed plate portion 41 is held at the fixed position, the ribs 43 and 43 are pressed against the heater core 11, and the heater core 11 is fixed to the casing 12. When engaging the engaging portion 41a with the upper claw portion 40a, both or one of them may be deformed by the elasticity of the resin, so that no screws or tools are required for fixing the heater core 11.

  At this time, since the two ribs 43 and 43 of the fixed plate portion 41 that are separated from each other are in pressure contact with the heater core 11, the heater core 11 is pressed in two places and is stabilized.

  Next, the case where the heater core 11 is once removed from the casing 12 for maintenance or the like and then assembled again will be described.

  When removing the heater core 11, the engaging portion 41a of the fixed plate portion 41 is removed from the upper claw portion 40a, and the fixed plate portion 41 is rotated around the thin hinge 42 to the retracted position. As a result, the fixing plate portion 41 is unlikely to obstruct the removal operation of the heater core 11, and the heater core 11 can be easily taken out from the heater core accommodation hole 52.

  When the engaging portion 41a is removed from the upper claw portion 40a, the upper claw portion 40a may be damaged. In this case, first, the thin hinge 42 is cut and the fixed plate portion 41 is detached from the casing 12. When the fixing plate portion 41 is detached, the thin hinge 52 that is thinner than other portions of the casing 12 is cut, so that it can be easily detached.

  Then, after the heater core 11 is accommodated in the heater core accommodation hole 52, the engaging portion 41a of the fixing plate portion 41 is engaged with the first lower claw portion 40b as shown in FIG. The portion is engaged with the second lower claw portion 40c. Again, no screws or tools are required. Thereby, the ribs 43 and 43 of the fixed plate portion 41 are pressed against the heater core 11, and the heater core 11 is fixed to the casing 12.

  When the upper claw portion 40a is not damaged, the engaging portion 41a may be engaged with the upper claw portion 40a again without cutting the thin hinge 42.

  As described above, according to this embodiment, the fixing plate portion 41 that holds and fixes the heater core 11 from the outside of the casing 12 is integrally formed in the casing 12 so as to be switchable between the fixed position and the retracted position, and is set to the fixed position. Since the engaging portion 41a that engages with the casing 12 at some time is provided in the fixed plate portion 41, an increase in the number of parts can be suppressed and work using a tool can be made unnecessary. Can be improved.

  Further, since the fixed plate portion 41 is formed integrally with the casing 12 via the thin hinge 42, the position of the fixed plate portion 41 can be easily switched.

  Further, since the upper claw portion 40a and the first and second lower claw portions 40b and 40c are provided at the peripheral edge portion of the housing hole 52 in the casing 12, the fixed plate portion 41 engaged with the upper claw portion 40a. Can be engaged with the first and second lower claw portions 40b and 40c when the upper claw portion 40a is damaged due to the maintenance being removed from the upper claw portion 40a. Can be reused to fix the heater core 11. Therefore, the cost required for maintenance and the like can be reduced.

  Moreover, since the ribs 43 and 43 provided at intervals are brought into contact with the heater core 11, the heater core 11 can be stabilized.

  In addition, you may make it curve both the edge parts 43a and 43b of the rib 43 of the fixing plate part 41 like the modification 1 shown in FIG. The edge 43 a on the distal end side of the fixed plate portion 41 in the rib 43 functions as a guide portion for guiding the heater core 11 to the heater core accommodation hole 52. That is, when the heater core 11 is accommodated in the heater core accommodation hole 52, in the first modification, the fixed plate portion 41 is set as the molding position. Thereby, when the heater core 11 is accommodated, the header tank 11b and the fin of the heater core 11 are in sliding contact with the edge 43a of the rib 43, and at this time, the header 43b and the fin are caught because the edge 43a is curved. And smoothly guided to the heater core housing hole 52. Further, by curving the edge 43b on the proximal end side of the fixed plate portion 41 in the rib 43, the heater core 11 is difficult to be caught by the header tank 11b and the fins when taking out the heater core 11 from the heater core housing hole 52, and the taking out operation is also smooth. Yes. The edge portions 43a and 43b may be formed in a linear shape that is inclined so that the height of the rib 43 decreases as it approaches the edge portion of the rib 43 without being bent.

  Further, as in Modification 2 shown in FIGS. 9 to 11, the engaging portion 41 a of the fixed plate portion 41 may be formed in a claw shape protruding from the tip of the fixed plate portion 41. In this case, a pair of side plate portions 60 a and 60 a formed at intervals in the longitudinal direction of the peripheral wall portion 40 as the engaged portion 60 with which the engaging portion 41 a engages in the peripheral wall portion 40 of the heater core housing hole 52. And a rod-like portion 60b extending in the longitudinal direction of the peripheral wall portion 40 so as to connect the side plate portions 60a and 60a may be provided. As shown in FIG. 11, the engaging portion 41a is engaged with the rod-like portion 60b while being engaged.

  12, when the engaging portion 41a of the fixed plate portion 41 is formed in a claw shape protruding from the tip of the fixed plate portion 41, the peripheral wall portion 40 of the heater core housing hole 52 has The engaged portion 61 formed so as to protrude toward the inside of the peripheral wall portion 40 may be provided. The engaged portion 61 is formed with a notch portion 61 a that opens toward the inside of the peripheral wall portion 40. The engaging portion 41a engages with the engaged portion 61 in a state where it enters the notch portion 61a.

  Further, as in Modification 4 shown in FIG. 13, a cover 63 for covering the heater pipe 11 a may be integrally formed on the fixed plate portion 41. The cover 63 is formed so as to protrude from the surface of the fixed plate portion 41 to the outside of the casing 12, and extends so as to cover a connection portion of the heater pipe 11a and a predetermined range in the vicinity thereof. By covering the heater pipe 11a with the cover 53, it is possible to prevent the passenger from touching the heater pipe 11a.

  As shown in the figure, the cover 63 is positioned to cover the heater pipe 11a when the fixed plate portion 41 is in the fixed position. On the other hand, although not shown, since the cover 63 is positioned away from the heater pipe 11a when the fixed plate portion 41 is in the retracted position, the cover 63 becomes an obstacle when the heater core 11 is accommodated in the heater core accommodation hole 52. There is no.

  Moreover, although the 1st and 2nd lower nail | claw parts 40b and 40c are abbreviate | omitted in the said modifications 2-4, you may provide the 1st and 2nd lower claw parts 40b and 40c also in these modifications. .

  Two or more fixed plate portions 41 may be provided.

  Further, the fixed plate portion 41 may be formed so as to cover the entire heater core accommodation hole 52.

  In addition to the heater core 11, the present invention can be used when the evaporator 10 is fixed.

  As described above, the present invention can be used, for example, when fixing a heater core of a vehicle air conditioner.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 3 Air conditioning unit 10 Evaporator 11 Heater core 11a Heater piping 12 Casing 40 Perimeter wall part 40a Upper nail | claw part (1st to-be-engaged part)
40b 1st lower side nail | claw part (2nd to-be-engaged part)
41 Fixed plate part (fixed part)
41a Engagement part 42 Thin hinge part 43 Rib (contact part)
43a Edge (guide section)
63 Cover

Claims (6)

Heat provided in a vehicle air conditioner that includes a heat exchanger and a casing that houses the heat exchanger, and that adjusts the temperature of the air-conditioning air introduced into the casing to each part of the passenger compartment by adjusting the temperature by the heat exchanger. In the exchanger fixing structure,
The casing includes an accommodation hole for accommodating the heat exchanger, and a fixing portion for fixing the heat exchanger accommodated in the accommodation hole,
The fixing portion is integrally formed with the casing so as to be switchable between a fixing position for pressing and fixing the heat exchanger from the outside of the housing hole of the casing and a retracted position retracted from the housing hole. Is provided with an engaging portion that engages with the casing when in the fixed position. The heat exchanger fixing structure according to claim 1,
The heat exchanger fixing structure, wherein the fixing portion is integrally formed with the casing via a thin hinge for switching between a fixing position and a retracted position. The heat exchanger fixing structure according to claim 2,
First and second engaged portions with which the engaging portions of the fixing portion are engaged are provided on the peripheral portion of the housing hole in the casing.
The first engaged portion is positioned so as to engage with the engaging portion in a state where the fixing portion is rotated around the thin hinge to be in a fixing position.
The heat exchanger fixing structure, wherein the second engaged portion is positioned away from the first engaged portion in the circumferential direction of the accommodation hole. In the heat exchanger fixing structure according to any one of claims 1 to 3,
A heat exchanger fixing structure, wherein the fixing portion is provided with a guide portion for guiding the heat exchanger to the accommodation hole when in the retracted position. In the heat exchanger fixing structure according to any one of claims 1 to 4,
A heat exchanger fixing structure, wherein a plurality of abutting portions that abut on the heat exchanger when being in a fixing position are provided on the fixing portion at intervals. In the heat exchanger fixing structure according to any one of claims 1 to 5,
A cover that covers the pipe connected to the heat exchanger is formed integrally with the fixed portion,
The heat exchanger fixing structure according to claim 1, wherein the cover is positioned so as to cover the piping when the fixing portion is in the fixing position, and is positioned so as to be separated from the piping when the fixing portion is in the retracted position.

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