JP2019162887A - Heater pipe clamp - Google Patents

Abstract

To reduce man hour of attachment and at the same time reduce the number of components.SOLUTION: An air conditioner for a vehicle includes a guide rib 30 and a clip 40 which fits in a fitted part 201 formed on the outer peripheral surface of an air-conditioning case 2, and comprises a heater pipe clamp 1 integrally formed with the guide rib 30 and the clip 40. The heater pipe clamp 1 is attached to the air-conditioning case by the clip 40 fitting in the fitted part 201 in such a condition that the guide rib 30 presses at least one of an inlet pipe 3 and an outlet pipe 4.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a heater pipe clamp that fixes a heater pipe to an air conditioning case.

  2. Description of the Related Art Conventionally, a vehicle air conditioner has a case that forms an air passage, a hot water heater core that is housed in the case and heats conditioned air, and an inlet pipe and an outlet pipe that allow hot water to enter and exit the hot water heater core. The inlet pipe and the outlet pipe protrude outside the case and are connected to the internal combustion engine outside the case.

  In such a vehicle air conditioner, a clamp for holding the inlet pipe and a clamp for holding the outlet pipe are prepared, and each clamp is fastened to the case with a tapping screw to hold the inlet pipe and the outlet pipe in the case. (For example, refer to Patent Document 1).

Japanese Patent No. 3876536

  However, in the device described in Patent Document 1, the clamp that holds the inlet pipe and the clamp that holds the outlet pipe are separate. Furthermore, since each clamp is fastened and fixed to the case by a tapping screw, there is a problem that the number of parts is large and the number of mounting steps is also large.

  The present invention has been made in view of the above problems, and an object thereof is to reduce the number of parts and the number of mounting steps.

  In order to achieve the above object, the invention described in claim 1 includes an air conditioning case (2) that forms an air passage, a heater core (6) that is housed in the air conditioning case and heats the air flowing through the air passage, and a heater core. An inlet pipe (3) for allowing cooling water to flow into the outlet pipe and an outlet pipe (4) for allowing cooling water to flow out from the heater core, wherein the inlet pipe and the outlet pipe extend outside the air conditioning case, A guide rib (30) that holds at least one of the inlet pipe and the outlet pipe, and a fitting portion (40) that fits into a fitting portion formed on the outer peripheral surface of the air conditioning case. And a heater pipe clamp (1) formed integrally with each other, and the heater pipe clamp has a fitting portion in a state where the guide rib presses at least one of the inlet pipe and the outlet pipe. It is attached to the air-conditioning case by fitting the fitted portion.

  According to such a configuration, the heater pipe clamp (1) in which the guide rib and the fitting portion are integrally formed is provided, and the heater pipe clamp is fitted in a state where the guide rib presses at least one of the inlet pipe and the outlet pipe. Since the joint part is attached to the air-conditioning case by being fitted to the fitted part, the number of parts can be reduced and the number of attachment steps can be reduced.

  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.

It is a front view of the heater pipe clamp of a vehicle air conditioner. It is a top view of a heater pipe clamp. It is a right view of a heater pipe clamp. It is a perspective view of a heater pipe clamp. It is the figure which showed the structure of the heater core. It is the figure showing a mode that the inlet pipe and the outlet pipe were fixed to the air-conditioning case using the heater pipe clamp. It is the figure showing a mode that the inlet pipe and the outlet pipe were fixed to the air-conditioning case using the heater pipe clamp.

  A vehicle air conditioner according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of a heater pipe clamp of a vehicle air conditioner. FIG. 2 is a top view of the heater pipe clamp. FIG. 3 is a right side view of the heater pipe clamp. FIG. 4 is a perspective view of the heater pipe clamp. FIG. 5 is a diagram showing the configuration of the heater core. FIG. 6 is a view showing a state in which the inlet pipe and the outlet pipe are fixed to the air conditioning case using the heater pipe clamp, and is a view of the heater pipe clamp as viewed from the front. FIG. 7 is a diagram illustrating a state in which the inlet pipe and the outlet pipe are fixed to the air conditioning case using the heater pipe clamp. In addition, the arrow showing the up-down in FIG. 1, FIG. 3 has shown the up-down direction at the time of vehicle mounting.

  The vehicle air conditioner includes an air conditioning case 2 shown in FIGS. 6 and 7, a heater core 6 shown in FIG. 5, an inlet pipe 3 that allows cooling water to flow into the heater core 6, and an outlet pipe 4 that causes cooling water to flow out from the heater core 6. And. The vehicle air conditioner further includes a heater pipe clamp 1 that fixes to the air conditioning case 2 an inlet pipe 3 that allows cooling water to flow into the heater core 6 and an outlet pipe 4 that causes cooling water to flow out of the heater core 6.

  The air conditioning case 2 forms an air passage. The air conditioning case 2 has a certain degree of elasticity and is formed of, for example, a resin such as polypropylene.

  The heater core 6 is housed in the air conditioning case 2 and heats the air flowing through the air passage. The heater core 6 heats air using cooling water that cools the engine of the vehicle as a heat source. An inlet pipe 3 and an outlet pipe 4 are connected to the heater core 6. The inlet pipe 3 and the outlet pipe 4 are made of a highly rigid cylindrical member made of metal.

  The heater pipe clamp 1 has a packing seat surface 10, a clamp body 20, guide ribs 30, and a clip 40. The clip 40 corresponds to a fitting portion. The packing seat surface 10, the clamp body 20, the guide rib 30 and the clip 40 are integrally molded. The heater pipe clamp is made of a resin such as polypropylene, for example.

  The packing seat surface 10 is for fixing the packing 5 shown in FIG. 7, and has a plate shape. The packing seat surface 10 is formed with a first opening hole 10a for inserting the inlet pipe 3 for flowing cooling water into the heater core and a second opening hole 10b for inserting the inlet pipe 3 for flowing cooling water into the heater core. Has been. The inner diameter of the first opening hole 10 a is slightly larger than the outer diameter of the inlet pipe 3, and the inner diameter of the second opening hole 10 b is slightly larger than the outer diameter of the outlet pipe 4. The inlet pipe 3 and the outlet pipe 4 are arranged so as to extend in the horizontal direction in the respective opening holes 10 a and 10 b formed in the packing seat surface 10.

  The packing 5 is a member for preventing noise caused by vibration transmitted from the engine of the vehicle from flowing into the room. The packing 5 is composed of a high-performance sealing material having excellent heat resistance and chemical resistance, developed using an ethylene propylene rubber foam having the most durability and light resistance among general-purpose rubbers. The packing 5 is fixed to one surface side of the packing seat surface 10. The packing 5 has opening holes at portions corresponding to the first opening hole 10a and the second opening hole 10b of the packing seat surface 10, respectively.

  The clamp body 20 has a first support portion 21, a second support portion 22, and a third support portion 23. The first support portion 21, the second support portion 22, and the third support portion 23 are formed so as to protrude from one surface side of the packing seat surface 10. At one end of the first support portion 21 and one end of the third support portion 23, a guide rib 30 that presses the inlet pipe 3 and the outlet pipe 4 is formed.

  The guide rib 30 has a first guide rib 31 formed at one end of the first support portion 21 and a second guide rib 32 formed at one end of the third support portion 23. The second guide rib 32 is formed at a position farther from the packing seat surface 10 than the first guide rib 31.

  The first guide rib 31 presses the inlet pipe 3 toward the air conditioning case 2 side. The inlet pipe 3 is disposed so as to extend in the up-down direction at a portion that contacts the first guide rib 31. The first guide rib 31 is curved so that the contact surface with the inlet pipe 3 is along the outer peripheral surface of the inlet pipe 3.

  The second guide rib 32 presses the outlet pipe 4 toward the air conditioning case 2 side. The outlet pipe 4 is disposed so as to extend in the up-down direction at a portion in contact with the second guide rib 32. The second guide rib 32 is curved so that the contact surface with the outlet pipe 4 is along the outer peripheral surface of the outlet pipe 4.

  Note that the inlet pipe 3 and the outlet pipe 4 extend from the inside of the air conditioning case 2 to the outside of the air conditioning case 2 below the air conditioning case 2, respectively, and then change the direction and extend obliquely upward from below. Furthermore, the direction is changed upward from below the guide rib 30, and extends from the bottom to the top at a portion in contact with the guide rib 30. Further, the direction is changed in the horizontal direction above the guide rib 30, and the opening holes 10 a and 10 b formed in the packing seat surface 10 extend in the horizontal direction. End portions of the inlet pipe 3 and the outlet pipe 4 arranged so as to protrude from the respective opening holes 10a and 10b are connected to a radiator for cooling the engine.

  The clip 40 is a fitting part that fits into a fitted part formed on the outer peripheral surface of the air conditioning case 2. The clip 40 includes a first clip 41, a second clip 42, and a third clip. As shown in FIG. 4, the first to third clips 41 to 43 have opening holes 41 a to 43 a, respectively.

  The mating portion formed on the outer peripheral surface of the air conditioning case 2 is provided with a locking claw. The locking claws provided in the fitted portion formed on the outer peripheral surface of the air conditioning case 2 are fitted into the opening holes 41a to 43a so that the first to third clips 41 to 43 are fitted to the fitted portion. It has become.

  As shown in FIG. 7, a locking claw 201 a is provided in the fitted portion 201 that is fitted to the first clip 41. The locking claws 201a formed on the outer peripheral surface of the air conditioning case 2 are fitted into the opening holes 41a to 43a of the first clip 41 so that the first clip 41 is fitted into the fitted portion 201 of the air conditioning case 2. Yes.

  Specifically, when the first clip 41 is slid so as to be fitted into the fitted portion 201 formed on the outer peripheral surface of the air conditioning case 2, the first clip 41 and the locking claw 201a come into contact with each other. The first clip 41 is elastically deformed. Further, when the first clip 41 is slid, the locking claw 201a enters the opening hole 41a of the first clip 41, and the first clip 41 is fitted into the fitted portion 201 of the air conditioning case 2.

  Next, a procedure for assembling the vehicle air conditioner will be described. First, the heater core 6 is fixed in the air conditioning case 2. At this time, since the inlet pipe 3 and the outlet pipe 4 extend to the outside of the air conditioning case 2 and the inlet pipe 3 and the outlet pipe 4 are not fixed, the operator supports the inlet pipe 3 and the outlet pipe 4 by hand. .

  Next, the inlet pipe 3 is inserted through the first opening hole 10a of the packing seat surface 10 and the outlet pipe 4 is inserted through the second opening hole 10b.

  Next, the inlet pipe 3 is pushed to the air conditioning case 2 side by the first guide rib 31 and the inlet pipe 3 is pushed to the air conditioning case 2 side by the second guide rib 32 while being covered on the outer peripheral surface of the air conditioning case 2. The first to third clips 41 to 43 are fitted into the fitting portion.

  Finally, the packing 5 is fixed to the packing seat surface 10, and the amount of protrusion of the inlet pipe 3 and the outlet pipe 4 from the packing seat surface 10 is adjusted to finish the assembling operation.

  According to the above-described configuration, the heater pipe clamp 1 in which the guide rib 30 and the clip 40 are integrally formed is provided. The heater pipe clamp 1 has the clip 40 in a state where the guide rib 30 presses the inlet pipe 3 and the outlet pipe 4. Since it is attached to the air-conditioning case 2 by being fitted to the fitted portion, the number of parts can be reduced and the number of attachment steps can be reduced.

  In addition, the direction in which the clip 40 is fitted into the fitted portion is a direction in which the guide rib 30 presses the inlet pipe 3 and the outlet pipe 4. According to this, the heater pipe clamp 1 can be easily attached to the air conditioning case 2.

  The heater pipe clamp 1 has a packing seat surface 10 on which a packing 5 for suppressing noise caused by vibrations transmitted from the engine of the vehicle is arranged. The packing seat surface 10 is formed integrally with the clip 40 and the guide rib 30. ing. According to this, the packing seat surface 10 on which the packing 5 that suppresses noise caused by vibration transmitted from the engine of the vehicle can be easily fixed to the packing seat surface 10.

(Other embodiments)
(1) In the said embodiment, the heater pipe clamp 1 is attached to the air-conditioning case 2 by the clip 40 fitting to a to-be-fitted part in the state which the guide rib 30 pressed the inlet pipe 3 and the outlet pipe 4. FIG. On the other hand, the heater pipe clamp 1 is configured to be attached to the air conditioning case 2 by fitting the clip 40 to the fitted portion with the guide rib 30 pressing at least one of the inlet pipe 3 and the outlet pipe 4. Also good.

  (2) In the above embodiment, the direction in which the clip 40 is fitted into the fitted portion and the direction in which the guide rib 30 presses the inlet pipe 3 and the outlet pipe 4 are the same direction, but are not necessarily the same direction. It does not have to be.

  (3) In the said embodiment, the latching claw provided in the to-be-fitted part formed in the outer peripheral surface of the air-conditioning case 2 fits into the opening holes 41a-43a, and the 1st-3rd clips 41-43 are fitted. It fits into the joint.

  On the other hand, a latching claw is formed on the heater pipe clamp, and a fitting portion having an opening hole is formed on the outer peripheral surface of the air conditioning case 2, so that the opening hole of the fitting portion formed in the air conditioning case 2 is formed. You may comprise so that the latching claw of a heater pipe clamp may fit.

  In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. In each of the above embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, etc., unless otherwise specified, or in principle limited to a specific material, shape, positional relationship, etc. The material, shape, positional relationship, etc. are not limited.

(Summary)
According to the first aspect shown in a part or all of each of the above embodiments, the heater pipe clamp 1 is integrally formed with the guide rib 30 and the clip 40. The heater pipe clamp 1 has the guide rib 30 at the entrance. The clip 40 is attached to the air-conditioning case 2 by fitting the clip 40 into the fitted portion while pressing the pipe 3 and the outlet pipe 4.

  According to the second aspect, the direction in which the clip 40 is fitted into the fitted portion is the direction in which the guide rib 30 presses the inlet pipe 3 and the outlet pipe 4. According to this, the heater pipe clamp 1 can be easily attached to the air conditioning case 2.

  According to the third aspect, the heater pipe clamp 1 has the packing seat surface 10 on which the packing 5 that suppresses noise caused by vibrations transmitted from the engine of the vehicle is disposed. In addition, the guide rib 30 is integrally formed. According to this, the packing seat surface 10 on which the packing 5 that suppresses noise caused by vibration transmitted from the engine of the vehicle can be easily fixed to the packing seat surface 10.

DESCRIPTION OF SYMBOLS 1 Heater pipe clamp 2 Air-conditioning case 3 Inlet pipe 4 Outlet pipe 6 Heater core 10 Packing seat surface 20 Clamp main body 21 1st support part 22 2nd support part 23 3rd support part 30 Guide rib 31 1st guide rib 32 2nd guide rib 40 Clip 41 First clip 42 Second clip 43 Third clip

Claims (3)

An air conditioning case (2) forming an air passage;
A heater core (6) which is housed in the air conditioning case and heats the air flowing through the air passage;
An inlet pipe (3) for flowing cooling water into the heater core;
An outlet pipe (4) for allowing cooling water to flow out of the heater core,
The vehicle air conditioner in which the inlet pipe and the outlet pipe extend outside the air conditioning case,
A guide rib (30) that holds down at least one of the inlet pipe and the outlet pipe; and a fitting portion (40) that fits into a fitted portion formed on an outer peripheral surface of the air conditioning case, and the guide rib And a heater pipe clamp (1) formed integrally with the fitting portion,
The heater pipe clamp is for a vehicle that is attached to the air conditioning case by fitting the fitting portion to the fitted portion with the guide rib pressing at least one of the inlet pipe and the outlet pipe. Air conditioner.   The vehicle air conditioner according to claim 1, wherein a direction in which the fitting portion is fitted into the fitted portion is a direction in which the guide rib presses at least one of the inlet pipe and the outlet pipe. The heater pipe clamp has a packing seat surface (10) on which a packing (5) for suppressing noise caused by vibration transmitted from an engine of a vehicle is disposed,
The vehicle air conditioner according to claim 1 or 2, wherein the packing seat surface is formed integrally with the fitting portion and the guide rib.

Images