JP2015202755A - Vehicle air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle air conditioner which enables grease to be supplied onto a wide range of an inner surface of a groove and thereby achieves smooth action when a pin part of a link is inserted into the groove to transmit a driving force.SOLUTION: In a pin part 33 of a link 30, a grease injection hole 33a into which grease is injected and a grease discharge hole 33c, which opens on an outer peripheral surface of the pin part 33, communicates with the grease injection hole 33a, and allows the grease injected into the grease injection hole 33a to be discharged, are formed.

Description

  The present invention relates to a vehicle air conditioner mounted on, for example, an automobile.

  Conventionally, a vehicle air conditioner is configured by housing a heat exchanger and various dampers in a casing into which air for air conditioning is introduced, and adjusts the air for air conditioning to a desired temperature to obtain conditioned air. Later, it is supplied to each part of the passenger compartment.

  As a damper of this type of vehicle air conditioner, one configured to adjust the flow rate of air by rotating around a rotation shaft supported by a casing is known (for example, Patent Document 1). 2).

  In Patent Document 1, grease is filled between the rotating shaft of the damper and the casing. In Patent Document 2, an arm-shaped link is attached to a rotating shaft of a damper, and a pin portion formed on the arm-shaped link is inserted into a groove formed on another disk-shaped link to be in an engaged state. By rotating the link, the damper is rotated through the arm-shaped link. The arm-shaped link and the disk-shaped link are rotatably supported by the casing, and the sliding portion is filled with grease.

JP 2008-195377 A JP 2012-201229 A

  As described in Patent Documents 1 and 2, the sliding portions of the damper and the link are filled with grease. In particular, as in Patent Document 2, the pin portion of the arm-shaped link is a groove of the disk-shaped link. In the case of a structure that moves relatively inside, the sliding area becomes wider in the longitudinal direction of the groove, so that it is difficult to apply grease over a wide range.

  Moreover, it is common for the operator who apply | coats grease to use a dispenser etc. However, the gap between the pin part of the arm-like link and the groove of the disk-like link is narrow, and the angle may vary even if it is aimed at the application range aimed at the nozzle of the dispenser. As a result, the outer peripheral surface of the pin part It is conceivable that the grease is not sufficiently applied to the inner surface of the groove, or the position of the grease intended to be applied is poor and falls from the groove.

  The present invention has been made in view of such a point, and the object of the present invention is to apply grease to a wide area of the inner surface of the groove when the pin portion of the link is inserted into the groove to transmit the driving force. The purpose of this is to enable smooth operation over a long period of time.

  In order to achieve the above object, according to the present invention, a grease injection hole and a grease discharge hole are formed in the pin portion, and the grease injected into the grease injection hole is discharged from the grease discharge hole so that the outer peripheral surface or groove of the pin portion is discharged. It was made to apply on the inner surface.

The first invention is
A damper housed in a casing into which air for air conditioning is introduced;
A first link attached to a rotating shaft of the damper;
A second link attached to the casing,
The pin portion formed on one of the first link and the second link is inserted into the groove formed on the other link to be engaged, and the driving force input to the second link is changed to the first link. In the vehicle air conditioner configured to transmit to the rotating shaft via one link,
The pin portion has a grease injection hole into which grease is injected, and a grease discharge hole that opens on the outer peripheral surface of the pin portion and communicates with the grease injection hole, and from which the grease injected into the grease injection hole discharges. Is formed.

  According to this configuration, for example, when applying the grease using a dispenser, the operator only needs to discharge the grease from the dispenser with the nozzle of the dispenser facing the grease injection hole of the pin portion. Can be easily injected into the grease injection hole. And the grease inject | poured into the grease injection hole is discharged to the outer peripheral surface of a pin part from a grease discharge hole. The grease discharged to the outer peripheral surface of the pin portion adheres to the inner surface of the groove, and the pin portion moves relative to the inside of the groove to spread in the longitudinal direction of the groove and be supplied over a wide range.

According to a second invention, in the first invention,
A pin portion is formed on the first link,
A groove is formed in the second link,
An opening for exposing the grease injection hole of the pin portion is formed in a bottom portion of the groove of the second link.

  According to this structure, when injecting grease into the grease injection hole of the pin portion, the grease injection hole of the pin portion is exposed from the opening of the second link in a state where the first link and the second link are assembled to the casing. It becomes possible. In this state, for example, it becomes possible to inject grease into the grease injection hole with the nozzle of the dispenser directed from the opening to the grease injection hole.

According to a third invention, in the first or second invention,
A protrusion is formed on the bottom surface of the groove,
A notch portion into which the protruding portion is inserted is formed in a portion of the pin portion that forms the peripheral wall portion of the grease injection hole.

  According to this configuration, when the pin portion relatively moves in the groove, the protruding portion is inserted into the notch portion of the pin portion. Since this notch is formed by notching the peripheral wall part of the grease injection hole, the grease injected into the grease injection hole is pushed out of the pin part from the notch part by the projecting part to the inner surface of the groove. Supplied.

According to a fourth invention, in the third invention,
The protrusion extends in the longitudinal direction of the groove.

  According to this configuration, the grease injected into the grease injection hole can be supplied to a wide range in the longitudinal direction of the groove while being pushed out by the protruding portion.

  According to the first invention, since the grease injection hole and the grease discharge hole through which the grease injected into the grease injection hole is formed in the pin portion, the grease can be supplied to a wide range of the inner surface of the groove, and smoothly Can be realized over a long period of time.

  According to the second invention, the pin portion is formed in the first link, the groove is formed in the second link, and the opening for exposing the grease injection hole of the pin portion is formed in the bottom surface of the groove of the second link. In a state where the first link and the second link are assembled to the casing, grease can be easily injected into the grease injection hole, and workability can be improved.

  According to the third aspect of the present invention, the protruding portion is formed on the bottom surface of the groove, and the notch portion into which the protruding portion is inserted is formed in the portion that forms the peripheral wall portion of the grease injection hole in the pin portion. The grease that has been injected into the groove can be pushed out from the notch portion by the protruding portion, so that the grease can be supplied to a wide range of the inner surface of the groove.

  According to the fourth aspect, since the protruding portion extends in the longitudinal direction of the groove, the grease injected into the grease injection hole can be supplied to a wide range in the longitudinal direction of the groove.

It is a right view of the vehicle air conditioner which concerns on embodiment. It is a right view in case a vent damper link and a disk-shaped link are in an engagement state. It is the III-III sectional view taken on the line in FIG. It is the IV-IV sectional view taken on the line in FIG. It is a right view of a vent damper link. It is a bottom view of a vent damper link. It is a front view of a vent damper link. FIG. 4 is a view corresponding to FIG. 3 showing a state in which the pin portion of the vent damper link and the groove of the disk-shaped link are relatively moved.

  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 is a right side view of a vehicle air conditioner 1 according to an embodiment of the present invention. The vehicle air conditioner 1 is housed inside an instrument panel (not shown) disposed at a front end portion of a vehicle interior of an automobile, for example. The vehicle air conditioner 1 includes a blower unit (not shown) in addition to the unit shown in FIG. The blower unit incorporates a fan, and is configured to be able to blow air as air-conditioning air by switching between vehicle interior air and vehicle exterior air. In the description of this embodiment, 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 simply referred to as “right”. To do.

  The vehicle air conditioner 1 includes a casing 10, a cooling heat exchanger 11, a heating heat exchanger 12, an air mix damper (not shown), a defroster damper 15, a vent damper 16, and a heat damper (not shown). )). The casing 10 is made of resin and accommodates a cooling heat exchanger 11, a heating heat exchanger 12, an air mix damper, a defroster damper 15, a vent damper 16, and a heat damper.

  An air inlet 10 a is formed on the front side of the right side wall portion of the casing 10. A ventilation unit is connected to the air introduction port 10a so that air-conditioning air blown from the ventilation unit is introduced.

  A defroster outlet 10 b is formed in the upper wall portion of the casing 10. The defroster outlet 10b is connected to a defroster port (not shown) of the instrument panel and supplies conditioned air to the inner surface of the windshield.

  A vent outlet 10c is formed on the rear side of the upper wall portion of the casing 10 from the defroster outlet 10b. The vent outlet 10c is connected to a vent opening (not shown) of the instrument panel and mainly supplies conditioned air to the upper body of the occupant.

  A heat outlet 10 d is formed on the rear side of the left and right wall portions of the casing 10. The heat outlet 10d is for supplying conditioned air to the vicinity of the passenger's feet.

  Although not shown, an air passage extending from the air inlet 10a to the defroster outlet 10b, the vent outlet 10c, and the heat outlet 10d is formed in the casing 10. The air passage has a cold air passage in which the cooling heat exchanger 11 is disposed and a hot air passage in which the heating heat exchanger 12 is disposed. The cooling heat exchanger 11 can be constituted by, for example, a refrigerant evaporator of a heat pump device, and cools the air-conditioning air flowing through the cold air passage. The heating heat exchanger 12 can be constituted by, for example, a heater core through which engine cooling water circulates, and cools the air-conditioning air flowing through the hot air passage. The air mix damper is for generating conditioned air at a desired temperature by changing the amount of cold air flowing through the cold air passage and the amount of hot air flowing through the hot air passage.

  The defroster damper 15 is for opening and closing the defroster outlet 10b, and includes a rotation shaft 15a extending in the left-right direction and a closing plate portion 15b extending in the radial direction of the rotation shaft 15a and closing the defroster outlet 10b. And. Both end portions of the rotation shaft 15a are rotatably supported by the left and right side walls of the casing 10. The right end portion of the rotation shaft 15 a protrudes outward from the right side wall portion of the casing 10.

  The defroster damper 15 is driven by the disk-shaped link 40 via the first defroster damper link 20 and the second defroster damper link 21. Both the first defroster damper link 20 and the second defroster damper link 21 are arm-shaped links. A right end portion of the rotation shaft 15a of the defroster damper 15 is fitted to one end portion of the first defroster damper link 20 and integrated with the rotation shaft 15a. The second defroster damper link 21 is pivotally attached to the casing 10 at an intermediate portion thereof, and has one end engaged with the first defroster damper link 20 and the other end engaged with the disc-like link 40. doing. Although not shown, the heat damper is similarly engaged with the disk-shaped link 40.

  As shown in FIG. 2, the vent damper 16 is driven by a disk-like link (second link) 40 via a vent damper link (first link) 30. The vent damper link 30 is an arm-shaped link made of a resin material. As shown in FIG. 5, a fitting hole 31 into which the rotation shaft 16 a of the vent damper 16 is fitted is formed on one end side (the left side in FIG. 5) of the vent damper link 30. The fitting hole 31 has a shape in which a part of a circle is cut out. The pivot shaft 16 a of the vent damper 16 has a shape that matches the fitting hole 31, and is integrated with the vent damper link 30 so as not to relatively rotate when inserted into the fitting hole 31. Therefore, the vent damper link 30 is supported by the casing 10 so as to be rotatable around the rotation shaft 16 a of the vent damper 16.

  The vent damper link 30 is formed so that the width becomes narrower toward the other end side (the right side in FIG. 5). As shown in FIGS. 6 and 7, a cylindrical portion 32 extending in the center line direction of the fitting hole 31 is provided on the other end side of the vent damper link 30. The length of the cylindrical portion 32 in the center line direction is set to be longer than the length of the fitting portion 31 in the center line direction, and the end surface 32 a of the cylindrical portion 32 protrudes from the outer surface of the vent damper link 30. The end surface 32 a of the cylindrical portion 32 extends in a direction substantially orthogonal to the center line of the cylindrical portion 32. The hole 32 b formed inside the cylindrical portion 32 is open on the side opposite to the end surface 32 a in the center line direction of the cylindrical portion 32.

  A pin portion 33 is formed on the end surface 32a of the cylindrical portion 32 so as to protrude. The center line of the pin portion 33 substantially coincides with the center line of the cylindrical portion 32. The pin portion 33 has a cylindrical peripheral wall portion, and a grease injection hole 33a is formed in the peripheral wall portion as shown in FIGS. The grease injection hole 33a is opened at the front end surface of the pin portion 33 in the protruding direction, and grease G (shown in FIG. 3) can be injected from the opening of the front end surface. The grease injection hole 33 a is open at the proximal end portion of the pin portion 33 and communicates with the hole portion 32 b of the cylindrical portion 32.

  A portion of the pin portion 33 that forms the peripheral wall portion of the grease injection hole 33a is provided with two cutout portions 33b and 33b formed by cutting out the peripheral wall portion. The notches 33b and 33b are arranged at a distance from each other in the circumferential direction of the pin portion 33 on the front end side of the pin portion 33 in the protruding direction. The front end surface of the pin portion 33 is also cut out by the cutout portion 33b, and a rib 41b described later can be inserted into the cutout portions 33b and 33b from the front end side of the pin portion 33 and the side of the pin portion 33. It is like that.

  The pin portion 33 is formed with four grease discharge holes 33c that open to the outer peripheral surface of the pin portion 33 and communicate with the grease injection holes 33a and discharge the grease G injected into the grease injection holes 33a. . The four grease discharge holes 33 c, 33 c,... Are arranged at substantially equal intervals in the circumferential direction of the pin portion 33. The grease discharge hole 33c has a slit shape extending along the center line direction of the pin portion 33 (the depth direction of a groove 41a described later). The base end portion of the pin portion 33 reaches the hole portion 32b of the cylindrical portion 32 and is continuous with the hole portion 32b. The distal end portion of the pin portion 33 is located closer to the base end side than the portion where the notch portion 33b is formed, and is not continuous with the notch portion 33b at a predetermined distance. Note that the number of the grease discharge holes 33c may be three or less, or five or more. Further, the shape of the grease discharge hole 33c may be circular, for example.

  On the other hand, as shown in FIG. 1, the disk-shaped link 40 is made of a resin material and is disposed along the right side wall portion of the casing 10. In FIG. 2, a circular through hole 40 a is formed at a substantially central portion of the disk-like link 40. A boss (not shown) formed in the casing 10 is inserted into the through hole 40a. The disc-like link 40 is rotatable around a rotation center line extending in the left-right direction while being supported by the boss.

  The disk-shaped link 40 is driven by an actuator (not shown). In addition, the disk-shaped link 40 can also be rotated by, for example, a well-known operation wire or the like that is operated by an occupant from the passenger compartment.

  On the outer peripheral side of the disk-shaped link 40, a bulging portion 41 is formed that bulges to the right side of the disk-shaped link 40 and extends in the circumferential direction along the outer edge of the disk-shaped link 40. Inside the bulging portion 41, a groove 41 a that opens to the left side is formed continuously across both longitudinal ends of the bulging portion 41. The groove 41 a has a substantially U-shaped cross section, and its width is set slightly wider than the outer diameter of the pin portion 33 of the vent damper link 30. Further, both side surfaces of the groove 41a extend in parallel to each other. Both side surfaces of the groove 41a and the bottom surface of the groove 41a are substantially orthogonal.

  The pin portion 33 of the vent damper link 30 is inserted into the groove 41a to be in an engaged state. The groove 41a is bent in the middle, and the rotation angle and the rotation timing of the vent damper link 30 are set by the shape of the groove 41a. The driving force input to the disk-shaped link 40 is transmitted to the rotating shaft 16 a of the vent damper 16 through the vent damper link 30.

  As shown in FIGS. 3 and 7, the depth of the groove 41a is such that the tip surface of the pin portion 33 is in light contact with the bottom surface of the groove 41a in the state where the pin portion 33 of the vent damper link 30 is inserted, It is set to be slightly away from.

  As shown in FIG. 2, the bulging portion 41 has three openings 41b, 41b, and 41b formed at portions corresponding to the bottom surface of the groove 41a. These openings 41b, 41b, 41b are arranged at intervals in the longitudinal direction of the groove 41a. Each opening 41b is formed through the bulging portion 41 so as to partially open the groove 41a to the right side of the disc-like link 40. Accordingly, in a state where the pin portion 33 of the vent damper link 30 is inserted into the groove 41a, the disk-like link 40 is rotated so that the pin portion 33 is positioned in the opening portion 41b as shown in FIGS. Then, the grease injection hole 33a of the pin portion 33 is exposed to the right side of the disc-like link 40 from the opening portion 41b.

  On the bottom surface of the groove 41a, a protruding portion 41c is formed at a portion other than the portion where the opening 41b is formed. The protrusion 41c is located at the center in the width direction of the groove 41a and has a rib shape extending in the longitudinal direction of the groove 41a. Moreover, the site | part by the side of the opening part 41b of the protrusion part 41c is formed so that protrusion height may become low, so that the opening part 41b is approached.

  The width of the protrusion 41c is set to be approximately the same as or slightly narrower than the width of the notches 33b and 33b of the pin 33. The protrusion 41c is inserted into the notch 33b of the pin 33 with the pin 33 inserted into the groove 41a.

  In the vehicle air conditioner 1 configured as described above, an operation of applying the grease G at the time of assembly is performed. That is, after assembling the vent damper link 30 and the disc-like link 40 to the casing 10, the pin portion 33 of the vent damper link 30 is placed in the opening 41 b of the groove 41 a of the disc-like link 40 as shown in FIG. 3. The disk-like link 40 is rotated so as to be positioned. Since the grease injection hole 33a is opened at the front end surface of the pin portion 33 in the protruding direction, the grease injection hole 33a is exposed from the opening 41b. In this state, the operator injects the grease G into the grease injection hole 33a with the nozzle D1 of the dispenser D for injecting the grease G directed toward the grease injection hole 33a of the pin portion 33. Since the grease injection hole 33a is exposed from the opening 41b, the operator can check whether the nozzle D1 is oriented in the direction of the grease injection hole 33a, and accurately apply the grease G to the grease injection hole 33a. Can be easily injected.

  The grease G injected into the grease injection hole 33a is discharged to the outer peripheral surface of the pin portion 33 from the grease discharge hole 33c communicating with the grease injection hole 33a. The grease G discharged to the outer peripheral surface of the pin portion 33 adheres to the inner surface of the groove 41a. And the pin part 33 moves relatively inside the groove | channel 41a, and the grease G spreads in the longitudinal direction of the groove | channel 41a, and is supplied to a wide range.

  Further, when the pin portion 33 shown in FIG. 3 is located in the opening 41b and the pin portion 33 is moved relative to the inside of the groove 41a to the state shown in FIG. 8, the protruding portion 41c becomes the pin portion. 33 is inserted into the notch 33b. Since the cutout portion 33b is formed by cutting out the peripheral wall portion of the grease injection hole 33a, the grease G injected into the grease injection hole 33a is pushed out of the pin portion 33 from the cutout portion 33b by the protruding portion 41c. This also causes the grease G to be supplied to the inner surface of the groove 41a.

  As described above, according to the vehicle air conditioner 1 according to this embodiment, since the grease injection hole 33a and the grease discharge hole 33c are formed in the pin portion 33 of the vent damper link 30, the disk-shaped link 40 The grease G can be supplied to a wide range of the inner surface of the groove 41a, and a smooth operation can be realized over a long period of time.

  In addition, since the opening 41b that exposes the grease injection hole 33a of the pin portion 33 is formed on the bottom surface of the groove 41a of the disc-like link 40, the vent damper link 30 and the disc-like link 40 are attached to the casing 10. Thus, the grease G can be easily injected into the grease injection hole 33a, and workability can be improved.

  In addition, the protrusion 41c is formed on the bottom surface of the groove 41a, and the notch 33b into which the protrusion 41c is inserted is formed in the portion of the pin portion 33 that forms the peripheral wall portion of the grease injection hole 33a. The grease G injected into the 33a can be pushed out from the cutout portion 33b by the protruding portion 41c and supplied to a wide area on the inner surface of the groove 41a.

  In addition, although the case where this invention was applied to the vent damper link 30 was demonstrated in the said embodiment, it is not restricted to this, The link of a defroster damper, the link of a heat damper, the link of an air mix damper, the inside / outside air switching damper of a ventilation unit It can also be applied to other links.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the vehicle air conditioner according to the present invention can be used as, for example, an automobile air conditioner.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 10 Casing 16 Vent damper 16a Rotating shaft 30 Vent damper link (1st link)
33 Pin portion 33a Grease injection hole 33b Notch portion 33c Grease discharge hole 40 Disc-shaped link (second link)
41a Groove 41b Opening 41c Projection

Claims (4)

A damper housed in a casing into which air for air conditioning is introduced;
A first link attached to a rotating shaft of the damper;
A second link attached to the casing,
The pin portion formed on one of the first link and the second link is inserted into the groove formed on the other link to be engaged, and the driving force input to the second link is changed to the first link. In the vehicle air conditioner configured to transmit to the rotating shaft via one link,
The pin portion has a grease injection hole into which grease is injected, and a grease discharge hole that opens on the outer peripheral surface of the pin portion and communicates with the grease injection hole, and from which the grease injected into the grease injection hole discharges. A vehicle air conditioner is formed. In the vehicle air conditioner according to claim 1,
A pin portion is formed on the first link,
A groove is formed in the second link,
An air conditioner for vehicles, wherein an opening for exposing the grease injection hole of the pin portion is formed in a bottom surface portion of the groove of the second link. The vehicle air conditioner according to claim 1 or 2,
A protrusion is formed on the bottom surface of the groove,
A vehicle air conditioner, wherein a portion of the pin portion forming the peripheral wall portion of the grease injection hole is formed with a notch portion into which the protruding portion is inserted. The vehicle air conditioner according to claim 3,
The vehicle air conditioner characterized in that the protrusion extends in the longitudinal direction of the groove.

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